diff --git a/Cargo.lock b/Cargo.lock
index dc310201f..fc43b8edd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -130,7 +130,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -138,7 +138,7 @@ name = "atty"
 version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -154,7 +154,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -163,8 +163,8 @@ name = "backtrace-sys"
 version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -371,7 +371,7 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.47"
+version = "1.0.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "jobserver 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -407,7 +407,7 @@ version = "0.26.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -421,7 +421,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -430,7 +430,7 @@ name = "clear_on_drop"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -488,7 +488,7 @@ version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -599,7 +599,7 @@ dependencies = [
  "csv 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -608,7 +608,7 @@ dependencies = [
  "rayon-core 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinytemplate 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -736,7 +736,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -815,9 +815,9 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "names 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rpassword 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rpassword 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "structopt 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-client 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -838,7 +838,7 @@ dependencies = [
 name = "darwinia-eth-relay"
 version = "0.2.0"
 dependencies = [
- "ethash 0.4.0 (git+https://github.com/hammeWang/ethash-rs.git?rev=70a4f078)",
+ "ethash 0.4.0",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "keccak-hasher 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "merkle-patricia-trie 0.1.0",
@@ -846,6 +846,7 @@ dependencies = [
  "rlp 0.4.4 (git+https://github.com/darwinia-network/parity-common.git)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sha3 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-eth-primitives 0.2.0",
  "sr-io 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -964,7 +965,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1014,7 +1015,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "elastic-array"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1063,7 +1064,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1073,16 +1074,16 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "ethash"
 version = "0.4.0"
-source = "git+https://github.com/hammeWang/ethash-rs.git?rev=70a4f078#70a4f078475700403f086ffe6286854869157f82"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethereum-types 0.8.0 (git+https://github.com/darwinia-network/parity-common.git)",
+ "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "primitive-types 0.6.1 (git+https://github.com/darwinia-network/parity-common.git)",
  "rlp 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha3 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1186,7 +1187,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1205,7 +1206,7 @@ name = "fdlimit"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1259,7 +1260,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "static_assertions 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1273,7 +1274,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1315,7 +1316,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1434,7 +1435,7 @@ dependencies = [
  "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1528,7 +1529,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "c_linked_list 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "get_if_addrs-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1538,7 +1539,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1547,7 +1548,7 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1605,7 +1606,7 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1665,7 +1666,7 @@ name = "hermit-abi"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1716,7 +1717,7 @@ dependencies = [
 
 [[package]]
 name = "http"
-version = "0.1.20"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1731,7 +1732,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-buf 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1775,7 +1776,7 @@ dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "h2 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1790,7 +1791,7 @@ dependencies = [
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-reactor 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1886,7 +1887,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1912,7 +1913,7 @@ name = "iovec"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1939,7 +1940,7 @@ version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1963,7 +1964,7 @@ dependencies = [
  "jsonrpc-pubsub 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "websocket 0.24.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1978,7 +1979,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1997,7 +1998,7 @@ dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2091,7 +2092,7 @@ name = "kvdb"
 version = "0.1.0"
 source = "git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f649ab2c665b7987b8475878fc4d2e1f81d"
 dependencies = [
- "elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elastic-array 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d)",
 ]
 
@@ -2109,7 +2110,7 @@ name = "kvdb-rocksdb"
 version = "0.1.4"
 source = "git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f649ab2c665b7987b8475878fc4d2e1f81d"
 dependencies = [
- "elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elastic-array 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs-swap 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "interleaved-ordered 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d)",
@@ -2137,7 +2138,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.65"
+version = "0.2.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -2145,7 +2146,7 @@ name = "libloading"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2218,7 +2219,7 @@ dependencies = [
  "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-timer 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2368,10 +2369,10 @@ dependencies = [
  "protobuf 2.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "snow 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "snow 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "x25519-dalek 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2525,9 +2526,9 @@ version = "5.18.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bindgen 0.47.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2549,10 +2550,10 @@ name = "libz-sys"
 version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2622,7 +2623,7 @@ name = "mach"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2631,7 +2632,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2650,7 +2651,7 @@ name = "memchr"
 version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2710,7 +2711,7 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "keccak 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2739,7 +2740,7 @@ dependencies = [
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2764,7 +2765,7 @@ version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2806,7 +2807,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2823,7 +2824,7 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2833,9 +2834,9 @@ version = "0.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3068,7 +3069,7 @@ version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3107,7 +3108,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3122,10 +3123,10 @@ version = "0.9.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3231,7 +3232,7 @@ dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3297,7 +3298,7 @@ name = "parking_lot_core"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3309,7 +3310,7 @@ name = "parking_lot_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3323,7 +3324,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3338,7 +3339,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3362,7 +3363,7 @@ dependencies = [
  "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3462,7 +3463,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3472,7 +3473,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3537,7 +3538,7 @@ name = "rand"
 version = "0.3.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3547,7 +3548,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3560,7 +3561,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3571,7 +3572,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3589,7 +3590,7 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3663,7 +3664,7 @@ name = "rand_jitter"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3675,7 +3676,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3714,7 +3715,7 @@ version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3794,7 +3795,7 @@ version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "mach 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3812,9 +3813,9 @@ name = "ring"
 version = "0.16.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "web-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3852,16 +3853,16 @@ name = "rocksdb"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "librocksdb-sys 5.18.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rpassword"
-version = "4.0.1"
+version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4011,7 +4012,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "security-framework-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4056,12 +4057,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.42"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4149,7 +4150,7 @@ dependencies = [
  "chrono 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4188,7 +4189,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "snow"
-version = "0.6.1"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4207,7 +4208,7 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "http 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4250,7 +4251,7 @@ dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4667,7 +4668,7 @@ dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "srml-support-procedural-tools 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4679,7 +4680,7 @@ dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "srml-support-procedural-tools-derive 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4689,7 +4690,7 @@ source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4869,7 +4870,7 @@ dependencies = [
  "proc-macro-error 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4976,7 +4977,7 @@ source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-
 dependencies = [
  "impl-trait-for-tuples 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-chain-spec-derive 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-network 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -4992,7 +4993,7 @@ dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5014,8 +5015,8 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "names 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rpassword 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rpassword 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "structopt 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-client 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -5198,7 +5199,7 @@ source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5258,7 +5259,7 @@ dependencies = [
  "parity-scale-codec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "srml-finality-tracker 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-client 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -5330,7 +5331,7 @@ dependencies = [
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-application-crypto 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "subtle 2.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5361,7 +5362,7 @@ dependencies = [
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5435,7 +5436,7 @@ dependencies = [
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5510,7 +5511,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-api 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "sr-version 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -5540,7 +5541,7 @@ dependencies = [
  "parity-scale-codec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-version 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "substrate-rpc-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -5567,7 +5568,7 @@ dependencies = [
  "jsonrpc-ws-server 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
 ]
 
@@ -5595,7 +5596,7 @@ dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5604,7 +5605,7 @@ version = "2.0.0"
 source = "git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop#d2c4b0dbd89d9588adcbe97320e27f49ee251411"
 dependencies = [
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5622,7 +5623,7 @@ dependencies = [
  "parity-scale-codec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-api 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
  "sr-io 2.0.0 (git+https://github.com/darwinia-network/substrate.git?branch=darwinia-develop)",
@@ -5822,7 +5823,7 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.9"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5837,7 +5838,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -5848,7 +5849,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "doc-comment 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5865,7 +5866,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "failure 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5888,7 +5889,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5908,7 +5909,7 @@ name = "textwrap"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5932,7 +5933,7 @@ name = "time"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5973,7 +5974,7 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5993,7 +5994,7 @@ dependencies = [
  "tokio-reactor 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-udp 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-uds 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6055,7 +6056,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6123,7 +6124,7 @@ dependencies = [
 
 [[package]]
 name = "tokio-threadpool"
-version = "0.1.16"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6180,7 +6181,7 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6224,7 +6225,7 @@ name = "trie-db"
 version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elastic-array 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hashbrown 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6353,7 +6354,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "unicode-width"
-version = "0.1.6"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -6411,7 +6412,7 @@ dependencies = [
 
 [[package]]
 name = "vcpkg"
-version = "0.2.7"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -6488,7 +6489,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -6520,7 +6521,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -6540,7 +6541,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
  "weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -6563,7 +6564,7 @@ name = "wasmi"
 version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "memory_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6618,7 +6619,7 @@ dependencies = [
  "file-per-thread-logger 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6653,7 +6654,7 @@ name = "wasmtime-runtime"
 version = "0.2.0"
 source = "git+https://github.com/CraneStation/wasmtime.git?rev=71dd73d6#71dd73d672deb325664e3c9cd4ee7acebed5fb95"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-codegen 0.46.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-entity 0.46.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cranelift-wasm 0.46.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6661,7 +6662,7 @@ dependencies = [
  "failure_derive 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "region 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmtime-environ 0.2.0 (git+https://github.com/CraneStation/wasmtime.git?rev=71dd73d6)",
@@ -6758,7 +6759,7 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "failure 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6876,7 +6877,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "zeroize"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "zeroize_derive 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6889,7 +6890,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -6906,7 +6907,7 @@ name = "zstd-safe"
 version = "1.4.13+zstd.1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "zstd-sys 1.4.13+zstd.1.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -6915,9 +6916,9 @@ name = "zstd-sys"
 version = "1.4.13+zstd.1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [metadata]
@@ -6968,7 +6969,7 @@ dependencies = [
 "checksum c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "214238caa1bf3a496ec3392968969cab8549f96ff30652c9e56885329315f6bb"
 "checksum c_linked_list 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4964518bd3b4a8190e832886cdc0da9794f12e8e6c1613a9e90ff331c4c8724b"
 "checksum cast 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4b9434b9a5aa1450faa3f9cb14ea0e8c53bb5d2b3c1bfd1ab4fc03e9f33fbfb0"
-"checksum cc 1.0.47 (registry+https://github.com/rust-lang/crates.io-index)" = "aa87058dce70a3ff5621797f1506cb837edd02ac4c0ae642b4542dce802908b8"
+"checksum cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)" = "f52a465a666ca3d838ebbf08b241383421412fe7ebb463527bba275526d89f76"
 "checksum cexpr 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "fce5b5fb86b0c57c20c834c1b412fd09c77c8a59b9473f86272709e78874cd1d"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum chrono 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "31850b4a4d6bae316f7a09e691c944c28299298837edc0a03f755618c23cbc01"
@@ -7022,14 +7023,13 @@ dependencies = [
 "checksum ed25519-dalek 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d07e8b8a8386c3b89a7a4b329fdfa4cb545de2545e9e2ebbc3dd3929253e426"
 "checksum ed25519-dalek 1.0.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)" = "845aaacc16f01178f33349e7c992ecd0cee095aa5e577f0f4dee35971bd36455"
 "checksum either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
-"checksum elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "073be79b6538296faf81c631872676600616073817dd9a440c477ad09b408983"
+"checksum elastic-array 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)" = "580f3768bd6465780d063f5b8213a2ebd506e139b345e4a81eb301ceae3d61e1"
 "checksum env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "aafcde04e90a5226a6443b7aabdb016ba2f8307c847d524724bd9b346dd1a2d3"
 "checksum env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
 "checksum environmental 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "34f8467a0284de039e6bd0e25c14519538462ba5beb548bb1f03e645097837a8"
 "checksum erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "3beee4bc16478a1b26f2e80ad819a52d24745e292f521a63c16eea5f74b7eb60"
 "checksum errno 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "c2a071601ed01b988f896ab14b95e67335d1eeb50190932a1320f7fe3cadc84e"
 "checksum errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "14ca354e36190500e1e1fb267c647932382b54053c50b14970856c0b00a35067"
-"checksum ethash 0.4.0 (git+https://github.com/hammeWang/ethash-rs.git?rev=70a4f078)" = "<none>"
 "checksum ethbloom 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "3932e82d64d347a045208924002930dc105a138995ccdc1479d0f05f0359f17c"
 "checksum ethbloom 0.8.1 (git+https://github.com/darwinia-network/parity-common.git)" = "<none>"
 "checksum ethereum-types 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b054df51e53f253837ea422681215b42823c02824bde982699d0dceecf6165a1"
@@ -7099,7 +7099,7 @@ dependencies = [
 "checksum hex-literal-impl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9d4c5c844e2fee0bf673d54c2c177f1713b3d2af2ff6e666b49cb7572e6cf42d"
 "checksum hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5dcb5e64cda4c23119ab41ba960d1e170a774c8e4b9d9e6a9bc18aabf5e59695"
 "checksum hmac-drbg 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c6e570451493f10f6581b48cdd530413b63ea9e780f544bfd3bdcaa0d89d1a7b"
-"checksum http 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)" = "2790658cddc82e82b08e25176c431d7015a0adeb1718498715cbd20138a0bf68"
+"checksum http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)" = "d6ccf5ede3a895d8856620237b2f02972c1bbc78d2965ad7fe8838d4a0ed41f0"
 "checksum http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6741c859c1b2463a423a1dbce98d418e6c3c3fc720fb0d45528657320920292d"
 "checksum httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
 "checksum humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "df004cfca50ef23c36850aaaa59ad52cc70d0e90243c3c7737a4dd32dc7a3c4f"
@@ -7142,7 +7142,7 @@ dependencies = [
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 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
-"checksum libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)" = "1a31a0627fdf1f6a39ec0dd577e101440b7db22672c0901fe00a9a6fbb5c24e8"
+"checksum libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)" = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
 "checksum libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2b111a074963af1d37a139918ac6d49ad1d0d5e47f72fd55388619691a7d753"
 "checksum libp2p 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8fab3090cd3af0f0ff5e6c2cc0f6fe6607e9f9282680cf7cd3bdd4cda38ea722"
 "checksum libp2p-core 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4a3def059145c191b6975e51784d5edc59e77e1ed5b25402fccac704dd7731f3"
@@ -7289,7 +7289,7 @@ dependencies = [
 "checksum rlp 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "3a44d5ae8afcb238af8b75640907edc6c931efcfab2c854e81ed35fa080f84cd"
 "checksum rlp_derive 0.1.0 (git+https://github.com/darwinia-network/parity-common.git)" = "<none>"
 "checksum rocksdb 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f1651697fefd273bfb4fd69466cc2a9d20de557a0213b97233b22b5e95924b5e"
-"checksum rpassword 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f072d931f11a96546efd97642e1e75e807345aced86b947f9239102f262d0fcd"
+"checksum rpassword 4.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d59f0e97173c514b9036cd450c195a6483ba81055c6fa0f1bff3ab563f47d44a"
 "checksum rust-argon2 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca4eaef519b494d1f2848fc602d18816fed808a981aedf4f1f00ceb7c9d32cf"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "403bb3a286107a04825a5f82e1270acc1e14028d3d554d7a1e08914549575ab8"
@@ -7314,7 +7314,7 @@ dependencies = [
 "checksum send_wrapper 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a0eddf2e8f50ced781f288c19f18621fa72a3779e3cb58dbf23b07469b0abeb4"
 "checksum serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "1217f97ab8e8904b57dd22eb61cde455fa7446a9c1cf43966066da047c1f3702"
 "checksum serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "a8c6faef9a2e64b0064f48570289b4bf8823b7581f1d6157c1b52152306651d0"
-"checksum serde_json 1.0.42 (registry+https://github.com/rust-lang/crates.io-index)" = "1a3351dcbc1f067e2c92ab7c3c1f288ad1a4cffc470b5aaddb4c2e0a3ae80043"
+"checksum serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)" = "48c575e0cc52bdd09b47f330f646cf59afc586e9c4e3ccd6fc1f625b8ea1dad7"
 "checksum sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "23962131a91661d643c98940b20fcaffe62d776a823247be80a48fcb8b6fce68"
 "checksum sha1 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
 "checksum sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4d8bfd0e469f417657573d8451fb33d16cfe0989359b93baf3a1ffc639543d"
@@ -7328,7 +7328,7 @@ dependencies = [
 "checksum slog_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9eff3b513cf2e0d1a60e1aba152dc72bedc5b05585722bb3cebd7bcb1e31b98f"
 "checksum smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0758c52e15a8b5e3691eae6cc559f08eee9406e548a4477ba4e67770a82b6"
 "checksum smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ecf3b85f68e8abaa7555aa5abdb1153079387e60b718283d732f03897fcfc86"
-"checksum snow 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "91eecae35b461ed26bda7a76bea2cc5bda2bf4b8dd06761879f19e6fdd50c2dd"
+"checksum snow 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "afb767eee7d257ba202f0b9b08673bc13b22281632ef45267b19f13100accd2f"
 "checksum soketto 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "bceb1a3a15232d013d9a3b7cac9e5ce8e2313f348f01d4bc1097e5e53aa07095"
 "checksum sourcefile 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "4bf77cb82ba8453b42b6ae1d692e4cdc92f9a47beaf89a847c8be83f4e328ad3"
 "checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
@@ -7437,7 +7437,7 @@ dependencies = [
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 "checksum subtle 2.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7c65d530b10ccaeac294f349038a597e435b18fb456aadd0840a623f83b9e941"
 "checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
-"checksum syn 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "f89693ae015201f8de93fd96bde2d065f8bfc3f97ce006d5bc9f900b97c0c7c0"
+"checksum syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)" = "dff0acdb207ae2fe6d5976617f887eb1e35a2ba52c13c7234c790960cdad9238"
 "checksum synstructure 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
 "checksum sysinfo 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)" = "6f4b2468c629cffba39c0a4425849ab3cdb03d9dfacba69684609aea04d08ff9"
 "checksum take_mut 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
@@ -7466,7 +7466,7 @@ dependencies = [
 "checksum tokio-rustls 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1df2fa53ac211c136832f530ccb081af9af891af22d685a9493e232c7a359bc2"
 "checksum tokio-sync 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "d06554cce1ae4a50f42fba8023918afa931413aded705b560e29600ccf7c6d76"
 "checksum tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1d14b10654be682ac43efee27401d792507e30fd8d26389e1da3b185de2e4119"
-"checksum tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd2c6a3885302581f4401c82af70d792bb9df1700e7437b0aeb4ada94d5388c"
+"checksum tokio-threadpool 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "f0c32ffea4827978e9aa392d2f743d973c1dfa3730a2ed3f22ce1e6984da848c"
 "checksum tokio-timer 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)" = "1739638e364e558128461fc1ad84d997702c8e31c2e6b18fb99842268199e827"
 "checksum tokio-tls 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "354b8cd83825b3c20217a9dc174d6a0c67441a2fae5c41bcb1ea6679f6ae0f7c"
 "checksum tokio-udp 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f02298505547f73e60f568359ef0d016d5acd6e830ab9bc7c4a5b3403440121b"
@@ -7490,7 +7490,7 @@ dependencies = [
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
 "checksum unicode-normalization 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b561e267b2326bb4cebfc0ef9e68355c7abe6c6f522aeac2f5bf95d56c59bdcf"
 "checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
-"checksum unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7007dbd421b92cc6e28410fe7362e2e0a2503394908f417b68ec8d1c364c4e20"
+"checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum unsigned-varint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f0023a96687fe169081e8adce3f65e3874426b7886e9234d490af2dc077959"
@@ -7498,7 +7498,7 @@ dependencies = [
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "75b414f6c464c879d7f9babf951f23bc3743fb7313c081b2e6ca719067ea9d61"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
-"checksum vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
+"checksum vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3fc439f2794e98976c88a2a2dafce96b930fe8010b0a256b3c2199a773933168"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum vergen 3.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6aba5e34f93dc7051dfad05b98a18e9156f27e7b431fe1d2398cb6061c0a1dba"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
@@ -7544,7 +7544,7 @@ dependencies = [
 "checksum yamux 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2758f29014c1cb7a6e74c1b1160ac8c8203be342d35b73462fc6a13cc6385423"
 "checksum zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4090487fa66630f7b166fba2bbb525e247a5449f41c468cc1d98f8ae6ac03120"
 "checksum zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "45af6a010d13e4cf5b54c94ba5a2b2eba5596b9e46bf5875612d332a1f2b3f86"
-"checksum zeroize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cdc979d9b5ead18184c357c4d8a3f81b579aae264e32507223032e64715462d3"
+"checksum zeroize 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3cbac2ed2ba24cc90f5e06485ac8c7c1e5449fe8911aef4d8877218af021a5b8"
 "checksum zeroize_derive 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de251eec69fc7c1bc3923403d18ececb929380e016afe103da75f396704f8ca2"
 "checksum zstd 0.4.28+zstd.1.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f4e716acaad66f2daf2526f37a1321674a8814c0b37a366ebe6c97a699f85ddc"
 "checksum zstd-safe 1.4.13+zstd.1.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "bfe4d3b26a0790201848865663e8ffabf091e126e548bc9710ccfa95621ece48"
diff --git a/Cargo.toml b/Cargo.toml
index 3a8114e1e..46e7e4f65 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,7 @@ panic = 'unwind'
 [workspace]
 members = [
 	"core/cli",
+	"core/ethash",
     "core/merkle-mountain-range",
     "core/fly-client",
     "core/sr-eth-primitives",
diff --git a/core/ethash/Cargo.toml b/core/ethash/Cargo.toml
new file mode 100644
index 000000000..0c00b9af2
--- /dev/null
+++ b/core/ethash/Cargo.toml
@@ -0,0 +1,29 @@
+[package]
+name = "ethash"
+description = "An Apache-licensed Ethash implementation."
+version = "0.4.0"
+authors = ["Wei Tang <hi@that.world>"]
+license = "Apache-2.0"
+edition = "2018"
+
+[dependencies]
+byteorder = { version = "1", default-features = false }
+rlp = { version = "0.4", default-features = false }
+sha3 = { version = "0.8", default-features = false }
+
+ethereum-types = { git = "https://github.com/darwinia-network/parity-common.git", default-features = false }
+primitive-types = { git = "https://github.com/darwinia-network/parity-common.git", default-features = false, features = ["rlp"] }
+
+[dev-dependencies]
+hex-literal = "0.2.1"
+
+[features]
+default = ["std"]
+std = [
+  "byteorder/std",
+  "rlp/std",
+  "sha3/std",
+
+  "ethereum-types/std",
+  "primitive-types/std",
+]
\ No newline at end of file
diff --git a/core/ethash/src/dag.rs b/core/ethash/src/dag.rs
new file mode 100644
index 000000000..305cb5802
--- /dev/null
+++ b/core/ethash/src/dag.rs
@@ -0,0 +1,52 @@
+use alloc::vec::Vec;
+use core::marker::PhantomData;
+use ethereum_types::{H256, H64, U256};
+
+pub trait Patch {
+	fn epoch_length() -> U256;
+}
+
+pub struct EthereumPatch;
+impl Patch for EthereumPatch {
+	fn epoch_length() -> U256 {
+		U256::from(30000)
+	}
+}
+
+pub struct LightDAG<P: Patch> {
+	epoch: usize,
+	cache: Vec<u8>,
+	#[allow(dead_code)]
+	cache_size: usize,
+	full_size: usize,
+	_marker: PhantomData<P>,
+}
+
+impl<P: Patch> LightDAG<P> {
+	pub fn new(number: U256) -> Self {
+		let epoch = (number / P::epoch_length()).as_usize();
+		let cache_size = crate::get_cache_size(epoch);
+		let full_size = crate::get_full_size(epoch);
+		let seed = crate::get_seedhash(epoch);
+
+		let mut cache: Vec<u8> = Vec::with_capacity(cache_size);
+		cache.resize(cache_size, 0);
+		crate::make_cache(&mut cache, seed);
+
+		Self {
+			cache,
+			cache_size,
+			full_size,
+			epoch,
+			_marker: PhantomData,
+		}
+	}
+
+	pub fn hashimoto(&self, hash: H256, nonce: H64) -> (H256, H256) {
+		crate::hashimoto_light(hash, nonce, self.full_size, &self.cache)
+	}
+
+	pub fn is_valid_for(&self, number: U256) -> bool {
+		(number / P::epoch_length()).as_usize() == self.epoch
+	}
+}
diff --git a/core/ethash/src/lib.rs b/core/ethash/src/lib.rs
new file mode 100644
index 000000000..201c76e6b
--- /dev/null
+++ b/core/ethash/src/lib.rs
@@ -0,0 +1,360 @@
+//! Apache-2 licensed Ethash implementation.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+extern crate alloc;
+
+// The reference algorithm used is from https://github.com/ethereum/wiki/wiki/Ethash
+
+mod dag;
+mod miller_rabin;
+
+pub use dag::{EthereumPatch, LightDAG, Patch};
+
+use alloc::vec::Vec;
+use byteorder::{ByteOrder, LittleEndian};
+use core::ops::BitXor;
+use ethereum_types::{BigEndianHash, H256, H512, H64, U256, U64};
+use miller_rabin::is_prime;
+use rlp::Encodable;
+use sha3::{Digest, Keccak256, Keccak512};
+
+pub const DATASET_BYTES_INIT: usize = 1073741824; // 2 to the power of 30.
+pub const DATASET_BYTES_GROWTH: usize = 8388608; // 2 to the power of 23.
+pub const CACHE_BYTES_INIT: usize = 16777216; // 2 to the power of 24.
+pub const CACHE_BYTES_GROWTH: usize = 131072; // 2 to the power of 17.
+pub const CACHE_MULTIPLIER: usize = 1024;
+pub const MIX_BYTES: usize = 128;
+pub const WORD_BYTES: usize = 4;
+pub const HASH_BYTES: usize = 64;
+pub const DATASET_PARENTS: usize = 256;
+pub const CACHE_ROUNDS: usize = 3;
+pub const ACCESSES: usize = 64;
+
+/// Get the cache size required given the block number.
+pub fn get_cache_size(epoch: usize) -> usize {
+	let mut sz = CACHE_BYTES_INIT + CACHE_BYTES_GROWTH * epoch;
+	sz -= HASH_BYTES;
+	while !is_prime((sz / MIX_BYTES) as u64) {
+		sz -= 2 * HASH_BYTES;
+	}
+	sz
+}
+
+/// Get the full dataset size given the block number.
+pub fn get_full_size(epoch: usize) -> usize {
+	let mut sz = DATASET_BYTES_INIT + DATASET_BYTES_GROWTH * epoch;
+	sz -= MIX_BYTES;
+	while !is_prime((sz / MIX_BYTES) as u64) {
+		sz -= 2 * MIX_BYTES
+	}
+	sz
+}
+
+fn fill_sha512(input: &[u8], a: &mut [u8], from_index: usize) {
+	let mut hasher = Keccak512::default();
+	hasher.input(input);
+	let out = hasher.result();
+	for i in 0..out.len() {
+		a[from_index + i] = out[i];
+	}
+}
+
+fn fill_sha256(input: &[u8], a: &mut [u8], from_index: usize) {
+	let mut hasher = Keccak256::default();
+	hasher.input(input);
+	let out = hasher.result();
+	for i in 0..out.len() {
+		a[from_index + i] = out[i];
+	}
+}
+
+/// Make an Ethash cache using the given seed.
+pub fn make_cache(cache: &mut [u8], seed: H256) {
+	assert!(cache.len() % HASH_BYTES == 0);
+	let n = cache.len() / HASH_BYTES;
+
+	fill_sha512(&seed[..], cache, 0);
+
+	for i in 1..n {
+		let (last, next) = cache.split_at_mut(i * 64);
+		fill_sha512(&last[(last.len() - 64)..], next, 0);
+	}
+
+	for _ in 0..CACHE_ROUNDS {
+		for i in 0..n {
+			let v = (LittleEndian::read_u32(&cache[(i * 64)..]) as usize) % n;
+
+			let mut r = [0u8; 64];
+			for j in 0..64 {
+				let a = cache[((n + i - 1) % n) * 64 + j];
+				let b = cache[v * 64 + j];
+				r[j] = a.bitxor(b);
+			}
+			fill_sha512(&r, cache, i * 64);
+		}
+	}
+}
+
+pub const FNV_PRIME: u32 = 0x01000193;
+fn fnv(v1: u32, v2: u32) -> u32 {
+	let v1 = v1 as u64;
+	let v2 = v2 as u64;
+
+	((((v1 * 0x01000000 | 0) + (v1 * 0x193 | 0)) ^ v2) >> 0) as u32
+}
+
+fn fnv64(a: [u8; 64], b: [u8; 64]) -> [u8; 64] {
+	let mut r = [0u8; 64];
+	for i in 0..(64 / 4) {
+		let j = i * 4;
+
+		LittleEndian::write_u32(
+			&mut r[j..],
+			fnv(LittleEndian::read_u32(&a[j..]), LittleEndian::read_u32(&b[j..])),
+		);
+	}
+	r
+}
+
+fn fnv128(a: [u8; 128], b: [u8; 128]) -> [u8; 128] {
+	let mut r = [0u8; 128];
+	for i in 0..(128 / 4) {
+		let j = i * 4;
+
+		LittleEndian::write_u32(
+			&mut r[j..],
+			fnv(LittleEndian::read_u32(&a[j..]), LittleEndian::read_u32(&b[j..])),
+		);
+	}
+	r
+}
+
+/// Calculate the dataset item.
+pub fn calc_dataset_item(cache: &[u8], i: usize) -> H512 {
+	debug_assert!(cache.len() % 64 == 0);
+
+	let n = cache.len() / 64;
+	let r = HASH_BYTES / WORD_BYTES;
+	let mut mix = [0u8; 64];
+	for j in 0..64 {
+		mix[j] = cache[(i % n) * 64 + j];
+	}
+	let mix_first32 = LittleEndian::read_u32(mix.as_ref()).bitxor(i as u32);
+	LittleEndian::write_u32(mix.as_mut(), mix_first32);
+	{
+		let mut remix = [0u8; 64];
+		for j in 0..64 {
+			remix[j] = mix[j];
+		}
+		fill_sha512(&remix, &mut mix, 0);
+	}
+	for j in 0..DATASET_PARENTS {
+		let cache_index = fnv(
+			(i.bitxor(j) & (u32::max_value() as usize)) as u32,
+			LittleEndian::read_u32(&mix[(j % r * 4)..]),
+		) as usize;
+		let mut item = [0u8; 64];
+		let cache_index = cache_index % n;
+		for i in 0..64 {
+			item[i] = cache[cache_index * 64 + i];
+		}
+		mix = fnv64(mix, item);
+	}
+	let mut z = [0u8; 64];
+	fill_sha512(&mix, &mut z, 0);
+	H512::from(z)
+}
+
+/// Make an Ethash dataset using the given hash.
+pub fn make_dataset(dataset: &mut [u8], cache: &[u8]) {
+	let n = dataset.len() / HASH_BYTES;
+	for i in 0..n {
+		let z = calc_dataset_item(cache, i);
+		for j in 0..64 {
+			dataset[i * 64 + j] = z[j];
+		}
+	}
+}
+
+/// "Main" function of Ethash, calculating the mix digest and result given the
+/// header and nonce.
+pub fn hashimoto<F: Fn(usize) -> H512>(header_hash: H256, nonce: H64, full_size: usize, lookup: F) -> (H256, H256) {
+	let n = full_size / HASH_BYTES;
+	let w = MIX_BYTES / WORD_BYTES;
+	const MIXHASHES: usize = MIX_BYTES / HASH_BYTES;
+	let s = {
+		let mut hasher = Keccak512::default();
+		let mut reversed_nonce: Vec<u8> = nonce.as_ref().into();
+		reversed_nonce.reverse();
+		hasher.input(&header_hash);
+		hasher.input(&reversed_nonce);
+		hasher.result()
+	};
+	let mut mix = [0u8; MIX_BYTES];
+	for i in 0..MIXHASHES {
+		for j in 0..64 {
+			mix[i * HASH_BYTES + j] = s[j];
+		}
+	}
+
+	for i in 0..ACCESSES {
+		let p = (fnv(
+			(i as u32).bitxor(LittleEndian::read_u32(s.as_ref())),
+			LittleEndian::read_u32(&mix[(i % w * 4)..]),
+		) as usize) % (n / MIXHASHES)
+			* MIXHASHES;
+		let mut newdata = [0u8; MIX_BYTES];
+		for j in 0..MIXHASHES {
+			let v = lookup(p + j);
+			for k in 0..64 {
+				newdata[j * 64 + k] = v[k];
+			}
+		}
+		mix = fnv128(mix, newdata);
+	}
+	let mut cmix = [0u8; MIX_BYTES / 4];
+	for i in 0..(MIX_BYTES / 4 / 4) {
+		let j = i * 4;
+		let a = fnv(
+			LittleEndian::read_u32(&mix[(j * 4)..]),
+			LittleEndian::read_u32(&mix[((j + 1) * 4)..]),
+		);
+		let b = fnv(a, LittleEndian::read_u32(&mix[((j + 2) * 4)..]));
+		let c = fnv(b, LittleEndian::read_u32(&mix[((j + 3) * 4)..]));
+
+		LittleEndian::write_u32(&mut cmix[j..], c);
+	}
+	let result = {
+		let mut hasher = Keccak256::default();
+		hasher.input(&s);
+		hasher.input(&cmix);
+		let r = hasher.result();
+		let mut z = [0u8; 32];
+		for i in 0..32 {
+			z[i] = r[i];
+		}
+		z
+	};
+	(H256::from(cmix), H256::from(result))
+}
+
+/// Ethash used by a light client. Only stores the 16MB cache rather than the
+/// full dataset.
+pub fn hashimoto_light(header_hash: H256, nonce: H64, full_size: usize, cache: &[u8]) -> (H256, H256) {
+	hashimoto(header_hash, nonce, full_size, |i| calc_dataset_item(cache, i))
+}
+
+/// Ethash used by a full client. Stores the whole dataset in memory.
+pub fn hashimoto_full(header_hash: H256, nonce: H64, full_size: usize, dataset: &[u8]) -> (H256, H256) {
+	hashimoto(header_hash, nonce, full_size, |i| {
+		let mut r = [0u8; 64];
+		for j in 0..64 {
+			r[j] = dataset[i * 64 + j];
+		}
+		H512::from(r)
+	})
+}
+
+/// Convert across boundary. `f(x) = 2 ^ 256 / x`.
+pub fn cross_boundary(val: U256) -> U256 {
+	if val <= U256::one() {
+		U256::max_value()
+	} else {
+		((U256::one() << 255) / val) << 1
+	}
+}
+
+/// Mine a nonce given the header, dataset, and the target. Target is derived
+/// from the difficulty.
+pub fn mine<T: Encodable>(
+	header: &T,
+	full_size: usize,
+	dataset: &[u8],
+	nonce_start: H64,
+	difficulty: U256,
+) -> (H64, H256) {
+	let target = cross_boundary(difficulty);
+	let header = rlp::encode(header).to_vec();
+
+	let mut nonce_current = nonce_start;
+	loop {
+		let (_, result) = hashimoto(
+			H256::from_slice(Keccak256::digest(&header).as_slice()),
+			nonce_current,
+			full_size,
+			|i| {
+				let mut r = [0u8; 64];
+				for j in 0..64 {
+					r[j] = dataset[i * 64 + j];
+				}
+				H512::from(r)
+			},
+		);
+		let result_cmp: U256 = result.into_uint();
+		if result_cmp <= target {
+			return (nonce_current, result);
+		}
+		let nonce_u64 = nonce_current.into_uint().as_u64();
+		nonce_current = H64::from_uint(&U64::from(nonce_u64 + 1));
+	}
+}
+
+/// Get the seedhash for a given block number.
+pub fn get_seedhash(epoch: usize) -> H256 {
+	let mut s = [0u8; 32];
+	for _ in 0..epoch {
+		fill_sha256(&s.clone(), &mut s, 0);
+	}
+	H256::from_slice(s.as_ref())
+}
+
+#[cfg(test)]
+mod tests {
+	use crate::{EthereumPatch, LightDAG};
+	use ethereum_types::{H256, H64};
+	use hex_literal::*;
+
+	#[test]
+	fn hashimoto_should_work() {
+		type DAG = LightDAG<EthereumPatch>;
+		let light_dag = DAG::new(0x8947a9.into());
+		// bare_hash of block#8996777 on ethereum mainnet
+		let partial_header_hash = H256::from(hex!("3c2e6623b1de8862a927eeeef2b6b25dea6e1d9dad88dca3c239be3959dc384a"));
+		let mixh = light_dag
+			.hashimoto(partial_header_hash, H64::from(hex!("a5d3d0ccc8bb8a29")))
+			.0;
+		assert_eq!(
+			mixh,
+			H256::from(hex!("543bc0769f7d5df30e7633f4a01552c2cee7baace8a6da37fddaa19e49e81209"))
+		);
+	}
+
+	#[test]
+	fn hashimoto_should_work_on_ropsten() {
+		type DAG = LightDAG<EthereumPatch>;
+		let light_dag = DAG::new(0x672884.into());
+		let partial_header_hash = H256::from(hex!("9cb3d16b788bfc7f2569db2d1fedb5b1e9633acfe84a4eca44a9fa50979a9887"));
+		let mixh = light_dag
+			.hashimoto(partial_header_hash, H64::from(hex!("9348d06003756cff")))
+			.0;
+		assert_eq!(
+			mixh,
+			H256::from(hex!("e06f0c107dcc91e9e82de0b42d0e22d5c2cfae5209422fda88cff4f810f4bffb"))
+		);
+	}
+
+	#[test]
+	fn hashimoto_should_work_on_ropsten_earlier() {
+		type DAG = LightDAG<EthereumPatch>;
+		let light_dag = DAG::new(0x11170.into());
+		let partial_header_hash = H256::from(hex!("bb698ea6e304a7a88a6cd8238f0e766b4f7bf70dc0869bd2e4a76a8e93fffc80"));
+		let mixh = light_dag
+			.hashimoto(partial_header_hash, H64::from(hex!("475ddd90b151f305")))
+			.0;
+		assert_eq!(
+			mixh,
+			H256::from(hex!("341e3bcf01c921963933253e0cf937020db69206f633e31e0d1c959cdd1188f5"))
+		);
+	}
+}
diff --git a/core/ethash/src/miller_rabin.rs b/core/ethash/src/miller_rabin.rs
new file mode 100644
index 000000000..565d514cc
--- /dev/null
+++ b/core/ethash/src/miller_rabin.rs
@@ -0,0 +1,149 @@
+// Derived from https://github.com/huonw/primal/blob/master/primal-check/src/is_prime.rs
+
+#[derive(Copy, Clone, PartialEq, PartialOrd, Ord, Eq, Debug)]
+struct U128 {
+	hi: u64,
+	lo: u64,
+}
+
+fn modulo(mut a: U128, m: u64) -> u64 {
+	if a.hi >= m {
+		a.hi -= (a.hi / m) * m;
+	}
+	let mut x = a.hi;
+	let mut y = a.lo;
+	for _ in 0..64 {
+		let t = (x as i64 >> 63) as u64;
+		x = (x << 1) | (y >> 63);
+		y <<= 1;
+		if (x | t) >= m {
+			x = x.wrapping_sub(m);
+			y += 1;
+		}
+	}
+	x
+}
+fn mul128(u: u64, v: u64) -> U128 {
+	let u1 = u >> 32;
+	let u0 = u & (!0 >> 32);
+	let v1 = v >> 32;
+	let v0 = v & (!0 >> 32);
+
+	let t = u0 * v0;
+	let w0 = t & (!0 >> 32);
+	let k = t >> 32;
+
+	let t = u1 * v0 + k;
+	let w1 = t & (!0 >> 32);
+	let w2 = t >> 32;
+
+	let t = u0 * v1 + w1;
+	let k = t >> 32;
+	U128 {
+		lo: (t << 32) + w0,
+		hi: u1 * v1 + w2 + k,
+	}
+}
+fn mod_mul_(a: u64, b: u64, m: u64) -> u64 {
+	modulo(mul128(a, b), m)
+}
+
+fn mod_mul(a: u64, b: u64, m: u64) -> u64 {
+	match a.checked_mul(b) {
+		Some(r) => {
+			if r >= m {
+				r % m
+			} else {
+				r
+			}
+		}
+		None => mod_mul_(a, b, m),
+	}
+}
+
+fn mod_sqr(a: u64, m: u64) -> u64 {
+	if a < (1 << 32) {
+		let r = a * a;
+		if r >= m {
+			r % m
+		} else {
+			r
+		}
+	} else {
+		mod_mul_(a, a, m)
+	}
+}
+
+fn mod_exp(mut x: u64, mut d: u64, n: u64) -> u64 {
+	let mut ret: u64 = 1;
+	while d != 0 {
+		if d % 2 == 1 {
+			ret = mod_mul(ret, x, n)
+		}
+		d /= 2;
+		x = mod_sqr(x, n);
+	}
+	ret
+}
+
+pub fn is_prime(n: u64) -> bool {
+	const HINT: &'static [u64] = &[2];
+
+	// we have a strict upper bound, so we can just use the witness
+	// table of Pomerance, Selfridge & Wagstaff and Jeaschke to be as
+	// efficient as possible, without having to fall back to
+	// randomness.
+	const WITNESSES: &'static [(u64, &'static [u64])] = &[
+		(2_046, HINT),
+		(1_373_652, &[2, 3]),
+		(9_080_190, &[31, 73]),
+		(25_326_000, &[2, 3, 5]),
+		(4_759_123_140, &[2, 7, 61]),
+		(1_112_004_669_632, &[2, 13, 23, 1662803]),
+		(2_152_302_898_746, &[2, 3, 5, 7, 11]),
+		(3_474_749_660_382, &[2, 3, 5, 7, 11, 13]),
+		(341_550_071_728_320, &[2, 3, 5, 7, 11, 13, 17]),
+		(0xFFFF_FFFF_FFFF_FFFF, &[2, 3, 5, 7, 11, 13, 17, 19, 23]),
+	];
+
+	if n % 2 == 0 {
+		return n == 2;
+	}
+	if n == 1 {
+		return false;
+	}
+
+	let mut d = n - 1;
+	let mut s = 0;
+	while d % 2 == 0 {
+		d /= 2;
+		s += 1
+	}
+
+	let witnesses = WITNESSES
+		.iter()
+		.find(|&&(hi, _)| hi >= n)
+		.map(|&(_, wtnss)| wtnss)
+		.unwrap();
+	'next_witness: for &a in witnesses.iter() {
+		let mut power = mod_exp(a, d, n);
+		assert!(power < n);
+		if power == 1 || power == n - 1 {
+			continue 'next_witness;
+		}
+
+		for _r in 0..s {
+			power = mod_sqr(power, n);
+			assert!(power < n);
+			if power == 1 {
+				return false;
+			}
+			if power == n - 1 {
+				continue 'next_witness;
+			}
+		}
+		return false;
+	}
+
+	true
+}
diff --git a/core/sr-eth-primitives/src/error.rs b/core/sr-eth-primitives/src/error.rs
index 0885c29f5..bd933c8c5 100644
--- a/core/sr-eth-primitives/src/error.rs
+++ b/core/sr-eth-primitives/src/error.rs
@@ -1,8 +1,8 @@
+use codec::{Decode, Encode};
+
 /// Define errors when verifying eth blocks
 use super::*;
 
-use codec::{Decode, Encode};
-
 #[derive(PartialEq, Eq, Clone, Copy, Debug, Encode, Decode)]
 /// Error indicating value found is outside of a valid range.
 pub struct OutOfBounds<T> {
@@ -31,6 +31,19 @@ pub enum BlockError {
 	Rlp(&'static str),
 }
 
+impl From<BlockError> for &str {
+	fn from(e: BlockError) -> Self {
+		use BlockError::*;
+
+		match e {
+			InvalidProofOfWork(_) => "Proof Of Work - INVALID",
+			DifficultyOutOfBounds(_) => "Difficulty - OUT OF BOUNDS",
+			InvalidSealArity(_) => "Seal Arity - INVALID",
+			Rlp(msg) => msg,
+		}
+	}
+}
+
 //#[cfg(feature = "std")]
 //impl Error for BlockError {
 //	fn description(&self) -> &str {
diff --git a/core/sr-eth-primitives/src/header.rs b/core/sr-eth-primitives/src/header.rs
index 348a8f8ff..c351cb652 100644
--- a/core/sr-eth-primitives/src/header.rs
+++ b/core/sr-eth-primitives/src/header.rs
@@ -2,9 +2,12 @@ use super::*;
 
 use codec::{Decode, Encode};
 use ethbloom::Bloom;
-use rlp::RlpStream;
+use keccak_hash::{keccak, KECCAK_EMPTY_LIST_RLP, KECCAK_NULL_RLP};
+use rlp::{Decodable, DecoderError, Encodable, Rlp, RlpStream};
 use sr_primitives::RuntimeDebug;
 
+use rstd::prelude::*;
+
 #[derive(PartialEq, Eq, Clone, Encode, Decode, Copy, RuntimeDebug)]
 enum Seal {
 	/// The seal/signature is included.
@@ -13,7 +16,7 @@ enum Seal {
 	Without,
 }
 
-#[derive(Default, PartialEq, Eq, Clone, Encode, Decode, RlpEncodable, RlpDecodable, RuntimeDebug)]
+#[derive(Eq, Clone, Encode, Decode, RuntimeDebug)]
 pub struct EthHeader {
 	pub parent_hash: H256,
 	pub timestamp: u64,
@@ -32,6 +35,90 @@ pub struct EthHeader {
 	pub hash: Option<H256>,
 }
 
+impl PartialEq for EthHeader {
+	fn eq(&self, c: &EthHeader) -> bool {
+		if let (&Some(ref h1), &Some(ref h2)) = (&self.hash, &c.hash) {
+			if h1 == h2 {
+				return true;
+			}
+		}
+
+		self.parent_hash == c.parent_hash
+			&& self.timestamp == c.timestamp
+			&& self.number == c.number
+			&& self.author == c.author
+			&& self.transactions_root == c.transactions_root
+			&& self.uncles_hash == c.uncles_hash
+			&& self.extra_data == c.extra_data
+			&& self.state_root == c.state_root
+			&& self.receipts_root == c.receipts_root
+			&& self.log_bloom == c.log_bloom
+			&& self.gas_used == c.gas_used
+			&& self.gas_limit == c.gas_limit
+			&& self.difficulty == c.difficulty
+			&& self.seal == c.seal
+	}
+}
+
+impl Default for EthHeader {
+	fn default() -> Self {
+		EthHeader {
+			parent_hash: H256::zero(),
+			timestamp: 0,
+			number: 0,
+			author: Address::zero(),
+
+			transactions_root: KECCAK_NULL_RLP,
+			uncles_hash: KECCAK_EMPTY_LIST_RLP,
+			extra_data: vec![],
+
+			state_root: KECCAK_NULL_RLP,
+			receipts_root: KECCAK_NULL_RLP,
+			log_bloom: Bloom::default(),
+			gas_used: U256::default(),
+			gas_limit: U256::default(),
+
+			difficulty: U256::default(),
+			seal: vec![],
+			hash: None,
+		}
+	}
+}
+
+impl Decodable for EthHeader {
+	fn decode(r: &Rlp) -> Result<Self, DecoderError> {
+		let mut blockheader = EthHeader {
+			parent_hash: r.val_at(0)?,
+			uncles_hash: r.val_at(1)?,
+			author: r.val_at(2)?,
+			state_root: r.val_at(3)?,
+			transactions_root: r.val_at(4)?,
+			receipts_root: r.val_at(5)?,
+			log_bloom: r.val_at(6)?,
+			difficulty: r.val_at(7)?,
+			number: r.val_at(8)?,
+			gas_limit: r.val_at(9)?,
+			gas_used: r.val_at(10)?,
+			timestamp: r.val_at(11)?,
+			extra_data: r.val_at(12)?,
+			seal: vec![],
+			hash: keccak(r.as_raw()).into(),
+		};
+
+		for i in 13..r.item_count()? {
+			blockheader.seal.push(r.at(i)?.as_raw().to_vec())
+		}
+
+		Ok(blockheader)
+	}
+}
+
+impl Encodable for EthHeader {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		self.stream_rlp(s, Seal::With);
+	}
+}
+
 /// Alter value of given field, reset memoised hash if changed.
 fn change_field<T>(hash: &mut Option<H256>, field: &mut T, value: T)
 where
@@ -292,6 +379,78 @@ mod tests {
 		(header1, header2)
 	}
 
+	#[test]
+	fn test_mainet_header_bare_hash() {
+		// 8996777
+		let mixh2 = H256::from(hex!("543bc0769f7d5df30e7633f4a01552c2cee7baace8a6da37fddaa19e49e81209"));
+		let nonce2 = H64::from(hex!("a5d3d0ccc8bb8a29"));
+
+		let header2 = EthHeader {
+            parent_hash: H256::from(hex!("0b2d720b8d3b6601e4207ef926b0c228735aa1d58301a23d58f9cb51ac2288d8")),
+            timestamp: 0x5ddb67a0,
+            number: 0x8947a9,
+            author: Address::from(hex!("4c549990a7ef3fea8784406c1eecc98bf4211fa5")),
+            transactions_root: H256::from(hex!("07d44fadb4aca78c81698710211c5399c1408bb3f0aa3a687d091d230fcaddc6")),
+            uncles_hash: H256::from(hex!("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")),
+            extra_data: "5050594520686976656f6e2d6574682d6672".from_hex().unwrap(),
+            state_root: H256::from(hex!("4ba0fb3e6f4c1af32a799df667d304bcdb7f8154e6f86831f92f5a354c2baf70")),
+            receipts_root: H256::from(hex!("5968afe6026e673df3b9745d925a5648282d2195a46c22771fec48210daf8e23")),
+            log_bloom: Bloom::from_str("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").unwrap(),
+            gas_used: 0x986d77.into(),
+            gas_limit: 0x989631.into(),
+            difficulty: 0x92ac28cbc4930_u64.into(),
+            seal: vec![rlp::encode(&mixh2), rlp::encode(&nonce2)],
+            hash: None,
+        };
+
+		let partial_header_hash2 = header2.bare_hash();
+
+		assert_eq!(
+			header2.hash(),
+			H256::from(hex!("b80bf91d6f459227a9c617c5d9823ff0b07f1098ea16788676f0b804ecd42f3b"))
+		);
+
+		//	println!("partial_header_hash2: {:?}", partial_header_hash2);
+
+		assert_eq!(
+			//		H256::from_slice(Keccak256::digest(&rlp::encode(&header2).to_vec()).as_slice()),
+			partial_header_hash2,
+			H256::from(hex!("3c2e6623b1de8862a927eeeef2b6b25dea6e1d9dad88dca3c239be3959dc384a"))
+		);
+	}
+
+	#[test]
+	fn test_ropsten_header_bare_hash() {
+		// 70000
+		let mixh2 = H256::from(hex!("341e3bcf01c921963933253e0cf937020db69206f633e31e0d1c959cdd1188f5"));
+		let nonce2 = H64::from(hex!("475ddd90b151f305"));
+
+		let header2 = EthHeader {
+            parent_hash: H256::from(hex!("e7a8c03a03f7c055599def00f21686d3b9179d272c8110162f012c191d303dad")),
+            timestamp: 0x583f2778,
+            number: 0x11170,
+            author: Address::from(hex!("1ad857f27200aec56ebb68283f91e6ac1086ad62")),
+            transactions_root: H256::from(hex!("35ecd6e29d0b8d161bd7863cfa3198e979b451fa637834b96b0da3d8d5d081cf")),
+            uncles_hash: H256::from(hex!("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347")),
+            extra_data: "d783010503846765746887676f312e372e33856c696e7578".from_hex().unwrap(),
+            state_root: H256::from(hex!("76565e67622936b6b9eac50f3a9ad940270f1c6d1d9f203fc6af4e0eb67b20fa")),
+            receipts_root: H256::from(hex!("fbbc5695aac7a42699da58878f0a8bb8c096ed95a9b087989c0903114650ca70")),
+            log_bloom: Bloom::from_str("00000100000000100000000000000000000000000000000000000000000000000000008000000000000000000000000004000000000000000000000000000000000000000000000400400000000000000000000000000000000000000010000000000000000000000000000000000000200000000000010000000000000000000000000000000000000000000008000000000000000000000000800000000000000000000000000000000000000000000200000000000000000000000000000000000040000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000002000000000000000000000").unwrap(),
+            gas_used: 0x182a8.into(),
+            gas_limit: 0x47d629.into(),
+            difficulty: 0x6648e9e_u64.into(),
+            seal: vec![rlp::encode(&mixh2), rlp::encode(&nonce2)],
+            hash: None,
+        };
+
+		let partial_header_hash2 = header2.bare_hash();
+
+		assert_eq!(
+			partial_header_hash2,
+			H256::from(hex!("bb698ea6e304a7a88a6cd8238f0e766b4f7bf70dc0869bd2e4a76a8e93fffc80"))
+		);
+	}
+
 	#[test]
 	fn can_do_proof_of_work_verification_fail() {
 		let mut header: EthHeader = EthHeader::default();
diff --git a/core/sr-eth-primitives/src/pow.rs b/core/sr-eth-primitives/src/pow.rs
index b5acb72c4..7a4073e0a 100644
--- a/core/sr-eth-primitives/src/pow.rs
+++ b/core/sr-eth-primitives/src/pow.rs
@@ -249,11 +249,11 @@ impl EthashSeal {
 
 		let mix_hash = Rlp::new(seal[0].as_ref())
 			.as_val::<H256>()
-			.map_err(|_e| BlockError::Rlp("wrong rlp"))
+			.map_err(|_e| BlockError::Rlp("Rlp - INVALID"))
 			.unwrap();
 		let nonce = Rlp::new(seal[1].as_ref())
 			.as_val::<H64>()
-			.map_err(|_e| BlockError::Rlp("wrong rlp"))
+			.map_err(|_e| BlockError::Rlp("Rlp - INVALID"))
 			.unwrap();
 		Ok(EthashSeal { mix_hash, nonce })
 	}
diff --git a/node/cli/src/browser.rs b/node/cli/src/browser.rs
index 68930c43c..cb99fc477 100644
--- a/node/cli/src/browser.rs
+++ b/node/cli/src/browser.rs
@@ -57,7 +57,7 @@ fn start_inner(wasm_ext: wasm_ext::ffi::Transport) -> Result<Client, Box<dyn std
 	};
 
 	info!("Darwinia browser node");
-	info!("Version {}", config.full_version());
+	info!("Version: {}", config.full_version());
 	info!("  _____                      _       _       ");
 	info!(" |  __ \\                    (_)     (_)      ");
 	info!(" | |  | | __ _ _ ____      ___ _ __  _  __ _ ");
diff --git a/node/cli/src/cli.rs b/node/cli/src/cli.rs
index c612ff8cd..253dba8eb 100644
--- a/node/cli/src/cli.rs
+++ b/node/cli/src/cli.rs
@@ -110,13 +110,13 @@ where
 {
 	type Config<A, B> = Configuration<(), A, B>;
 
-	match parse_and_prepare::<CustomSubcommands, NoCustom, _>(&version, "substrate-node", args) {
+	match parse_and_prepare::<CustomSubcommands, NoCustom, _>(&version, "darwinia-node", args) {
 		ParseAndPrepare::Run(cmd) => cmd.run(
 			load_spec,
 			exit,
 			|exit, _cli_args, _custom_args, config: Config<_, _>| {
 				info!("{}", version.name);
-				info!("version {}", config.full_version());
+				info!("Version: {}", config.full_version());
 				info!("  _____                      _       _       ");
 				info!(" |  __ \\                    (_)     (_)      ");
 				info!(" | |  | | __ _ _ ____      ___ _ __  _  __ _ ");
diff --git a/node/runtime/src/constants.rs b/node/runtime/src/constants.rs
index 83a0e22f1..e35cab469 100644
--- a/node/runtime/src/constants.rs
+++ b/node/runtime/src/constants.rs
@@ -64,7 +64,7 @@ pub mod time {
 		//		const SLOT_FILL_RATE: f64 = MILLISECS_PER_BLOCK as f64 / SLOT_DURATION as f64;
 
 		// Develop
-		2
+		5
 		// Production
 		//		(EPOCH_DURATION_IN_BLOCKS as f64 * SLOT_FILL_RATE) as u64
 	};
diff --git a/node/runtime/src/lib.rs b/node/runtime/src/lib.rs
index f7d2da38a..84be8508b 100644
--- a/node/runtime/src/lib.rs
+++ b/node/runtime/src/lib.rs
@@ -368,25 +368,25 @@ impl staking::Trait for Runtime {
 	type CurrencyToVote = CurrencyToVoteHandler;
 	type RingRewardRemainder = ();
 	type Event = Event;
-	type RingSlash = ();
 	type RingReward = ();
-	type KtonSlash = ();
 	type KtonReward = ();
+	type RingSlash = ();
+	type KtonSlash = ();
 	type SessionsPerEra = SessionsPerEra;
 	type BondingDuration = BondingDuration;
+	type SessionInterface = Self;
+
 	type Cap = HardCap;
 	type GenesisTime = GenesisTime;
-	type SessionInterface = Self;
 }
 
 parameter_types! {
-	pub const ETH_MAINET: u64 = 0;
-	pub const ETH_ROPSTEN: u64 = 1;
+	pub const EthMainet: u64 = 0;
+	pub const EthRopsten: u64 = 1;
 }
-
 impl eth_relay::Trait for Runtime {
 	type Event = Event;
-	type EthNetwork = ETH_ROPSTEN;
+	type EthNetwork = EthRopsten;
 }
 
 construct_runtime!(
diff --git a/srml/eth-relay/Cargo.toml b/srml/eth-relay/Cargo.toml
index d77768323..b05a6e387 100644
--- a/srml/eth-relay/Cargo.toml
+++ b/srml/eth-relay/Cargo.toml
@@ -16,31 +16,33 @@ sr-primitives = { git = "https://github.com/darwinia-network/substrate.git", bra
 support = { package = "srml-support", git = "https://github.com/darwinia-network/substrate.git", branch = "darwinia-develop", default-features = false }
 sr-eth-primitives = { path = "../../core/sr-eth-primitives", default-features = false }
 
-rlp = { package = "rlp", git = "https://github.com/darwinia-network/parity-common.git", default-features = false}
-ethash = { git = "https://github.com/hammeWang/ethash-rs.git", rev = "70a4f078", default-features = false}
-merkle-patricia-trie = { path = "../../core/merkle-patricia-trie", default-features = false}
+rlp = { package = "rlp", git = "https://github.com/darwinia-network/parity-common.git", default-features = false }
+ethash = { path = "../../core/ethash", default-features = false }
+merkle-patricia-trie = { path = "../../core/merkle-patricia-trie", default-features = false }
 
 [dev-dependencies]
-runtime-io = { package = "sr-io", git = "https://github.com/darwinia-network/substrate.git", branch = "darwinia-develop"}
+runtime-io = { package = "sr-io", git = "https://github.com/darwinia-network/substrate.git", branch = "darwinia-develop" }
 primitives = { package = "substrate-primitives",  git = "https://github.com/darwinia-network/substrate.git", branch = "darwinia-develop" }
 transaction-payment = { package = "srml-transaction-payment", git = "https://github.com/darwinia-network/substrate.git", branch = "darwinia-develop" }
 rustc-hex = "2.0"
 keccak-hasher = "0.15.2"
 triehash = { package = "triehash", git = "https://github.com/darwinia-network/parity-common.git" }
 hex-literal = "0.2.1"
+sha3 = { version = "0.8", default-features = false }
 
 [features]
 default = ["std"]
 std = [
     "serde/std",
+
 	"codec/std",
     "rstd/std",
+    "sr-eth-primitives/std",
     "sr-primitives/std",
     "support/std",
     "system/std",
-    "sr-eth-primitives/std",
-    "ethash/std",
-    "rlp/std",
+
     "ethash/std",
     "merkle-patricia-trie/std",
+    "rlp/std",
 ]
diff --git a/srml/eth-relay/src/lib.rs b/srml/eth-relay/src/lib.rs
index fb0c0300e..18fd806eb 100644
--- a/srml/eth-relay/src/lib.rs
+++ b/srml/eth-relay/src/lib.rs
@@ -73,7 +73,6 @@ decl_storage! {
 
 		pub ActionOf get(action_of): map T::Hash => Option<ActionRecord>;
 
-
 //		pub BestHashOf get(best_hash_of): map u64 => Option<H256>;
 
 //		pub HashsOf get(hashs_of): map u64 => Vec<H256>;
@@ -85,9 +84,9 @@ decl_storage! {
 		config(genesis_difficulty): u64;
 		build(|config| {
 			if let Some(h) = &config.header {
-				let header: EthHeader = rlp::decode(&h).expect("can't deserialize the header");
+				let header: EthHeader = rlp::decode(&h).expect("Deserialize Header - FAILED");
 
-				<Module<T>>::genesis_header(&header,config.genesis_difficulty);
+				<Module<T>>::init_genesis_header(&header,config.genesis_difficulty);
 
 				// TODO: initilize other parameters.
 			}
@@ -107,7 +106,7 @@ decl_module! {
 			// TODO: Check authority
 
 			// TODO: Just for easy testing.
-			Self::genesis_header(&header, genesis_difficulty);
+			Self::init_genesis_header(&header, genesis_difficulty);
 
 			<Module<T>>::deposit_event(RawEvent::NewHeader(header));
 		}
@@ -129,7 +128,7 @@ decl_module! {
 
 			let verified_receipt = Self::verify_receipt(&proof_record);
 
-			ensure!(verified_receipt.is_some(), "Receipt proof verification failed.");
+			ensure!(verified_receipt.is_some(), "Receipt Proof Verification - FAILED");
 
 			<Module<T>>::deposit_event(RawEvent::RelayProof(verified_receipt.unwrap(), proof_record));
 		}
@@ -152,12 +151,15 @@ decl_event! {
 		NewHeader(EthHeader),
 		RelayProof(Receipt, ActionRecord),
 		TODO(AccountId),
+
+//		 Develop
+		//		Print(u64),
 	}
 }
 
 impl<T: Trait> Module<T> {
 	// TOOD: what is the total difficulty for genesis/begin header
-	pub fn genesis_header(header: &EthHeader, genesis_difficulty: u64) {
+	pub fn init_genesis_header(header: &EthHeader, genesis_difficulty: u64) {
 		let header_hash = header.hash();
 		let block_number = header.number();
 
@@ -198,7 +200,7 @@ impl<T: Trait> Module<T> {
 			return None;
 		}
 
-		let proof_receipt: Receipt = rlp::decode(&value.unwrap()).expect("can't deserialize the receipt");
+		let proof_receipt: Receipt = rlp::decode(&value.unwrap()).expect("Deserialize Receipt - FAILED");
 
 		Some(proof_receipt)
 		// confirm that the block hash is right
@@ -210,18 +212,18 @@ impl<T: Trait> Module<T> {
 	/// 2. proof of pow (mixhash)
 	/// 3. challenge
 	fn verify_header(header: &EthHeader) -> Result {
-		// check parent hash,
+		// TODO: check parent hash,
 		let parent_hash = header.parent_hash();
 
 		let number = header.number();
+
 		ensure!(
-			number >= Self::begin_header().unwrap().number(),
-			"block nubmer is too small."
+			number >= Self::begin_header().expect("Begin Header - NOT EXISTED").number(),
+			"Block Number - TOO SMALL"
 		);
 
-		let prev_header = Self::header_of(parent_hash).unwrap();
-
-		ensure!((prev_header.number() + 1) == number, "Block number does not match.");
+		let prev_header = Self::header_of(parent_hash).expect("Previous Header - NOT EXISTED");
+		ensure!((prev_header.number() + 1) == number, "Block Number - NOT MATCHED");
 
 		// check difficulty
 		let ethash_params = match T::EthNetwork::get() {
@@ -229,24 +231,27 @@ impl<T: Trait> Module<T> {
 			1 => EthashPartial::ropsten_testnet(),
 			_ => EthashPartial::production(), // others
 		};
-		ethash_params
-			.verify_block_basic(header)
-			.expect("Block difficulty verification failed.");
+		ethash_params.verify_block_basic(header)?;
 
 		// verify difficulty
 		let difficulty = ethash_params.calculate_difficulty(header, &prev_header);
-		ensure!(difficulty == *header.difficulty(), "difficulty verification failed");
+		ensure!(difficulty == *header.difficulty(), "Difficulty Verification - FAILED");
 
 		// verify mixhash
-		let seal = EthashSeal::parse_seal(header.seal()).unwrap();
-
-		let light_dag = DAG::new(number.into());
-		let partial_header_hash = header.bare_hash();
-		let mix_hash = light_dag.hashimoto(partial_header_hash, seal.nonce).0;
-
-		if mix_hash != seal.mix_hash {
-			return Err("Mixhash does not match.");
-		}
+		match T::EthNetwork::get() {
+			1 => {},	// TODO: Ropsten have issues, do not verify mixhash.
+			_ => {
+				let seal = EthashSeal::parse_seal(header.seal())?;
+
+				let light_dag = DAG::new(number.into());
+				let partial_header_hash = header.bare_hash();
+				let mix_hash = light_dag.hashimoto(partial_header_hash, seal.nonce).0;
+
+				if mix_hash != seal.mix_hash {
+					return Err("Mixhash - NOT MATCHED");
+				}
+			},
+		};
 
 		//			ensure!(best_header.height == block_number, "Block height does not match.");
 		//			ensure!(best_header.hash == *header.parent_hash(), "Block hash does not match.");
diff --git a/srml/eth-relay/src/tests.rs b/srml/eth-relay/src/tests.rs
index e86b9c573..70c4487a1 100644
--- a/srml/eth-relay/src/tests.rs
+++ b/srml/eth-relay/src/tests.rs
@@ -18,6 +18,7 @@ use sr_eth_primitives::{
 
 use hex_literal::hex;
 use rustc_hex::FromHex;
+use sha3::Keccak256;
 use std::str::FromStr;
 
 #[test]
@@ -76,7 +77,7 @@ fn verify_receipt_proof() {
 				hash: Some(H256::from(hex!("f1a5bc27877e219b859b0bb1f2f440134553019f9bb5a2eca7a4703263e736c9"))),
 			};
 
-			EthRelay::genesis_header(&header, 0x624c22d93f8e59_u64);
+			EthRelay::init_genesis_header(&header, 0x624c22d93f8e59_u64);
 
 			assert_eq!(EthRelay::verify_receipt(&proof_record), Some(receipt));
 		});
@@ -107,6 +108,11 @@ fn relay_header() {
 			hash: Some(H256::from(hex!("f1a5bc27877e219b859b0bb1f2f440134553019f9bb5a2eca7a4703263e736c9"))),
 		};
 
+		// #6890091
+		// https://api-ropsten.etherscan.io/api?module=proxy&action=eth_getBlockByNumber&tag=0x69226b&boolean=true&apikey=YourApiKeyToken
+		// https://jsoneditoronline.org/
+
+		type DAG = LightDAG<EthereumPatch>;
 
 		// 6760580
 		let mixh2 = H256::from(hex!("e06f0c107dcc91e9e82de0b42d0e22d5c2cfae5209422fda88cff4f810f4bffb"));
@@ -131,7 +137,20 @@ fn relay_header() {
 		};
 
 
-		EthRelay::genesis_header(&header1, 0x624c22d93f8e59_u64);
+		EthRelay::init_genesis_header(&header1, 0x624c22d93f8e59_u64);
+
+//		let light_dag2 = DAG::new(header2.number().into());
+//		let partial_header_hash2 = header2.bare_hash();
+//
+//		println!("partial_header_hash2: {:?}", partial_header_hash2);
+//
+//		let mixhash2 = light_dag2
+//			.hashimoto(partial_header_hash2, nonce2)
+//			.0;
+//		assert_eq!(
+//			mixhash2,
+//			mixh2
+//		);
 
 		EthRelay::verify_header(&header2).expect("Verify Failed.");