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id title
guides
Get Started

Introduction

Founded as an open-source project in 2017, IoTeX is building the world's leading auto-scalable and privacy-centric blockchain platform for the Internet of Things (IoT). Our mission is to build a decentralized trust fabric for the era of collaboration and data exchange among devices, applications and people. We are developing several innovative technologies in-house, including the blockchain-in-blockchain architecture for heterogeneous computing, fast and robust Roll-DPoS consensus scheme, and efficient trusted computing protocols. More details can be found here. IoTeX core team is continuously working hard to bring the community more cool features.

Grand Design

The overall design of IoTeX Network employs Separation of Powers,a term coined by Charles-Louis de Secondat which states that democratic political authority should be divided into legislative, executive and judicial powers. Generally speaking, IoTeX Network is a decentralized trust fabric consisting of multiple blockchains to connect humans, machines, applications, arranged hierarchically and serving different purposes. IoTeX Rootchain Architecture

  • Governance layer, instantiated by the Gravity Chain is the layer that acts as a decentralized government for the IoTeX network. It exclusively focuses on decentralization and security, a liveness-oriented consensus scheme (e.g., PoS variant) to facilitate tasks such as staking, voting, slashing, protocol-related proposals, and more. Before the launch of the gravity chain Q3/Q4 2019, Ethereum mainnet will be used as the governance layer.
  • Orchestration layer, instantiated by the Root Chain, is the general manager and coordinator for all subchains. It is powered by our safety-oriented Roll-DPoS consensus mechanism and aims for reasonable throughput, reliability and transparency. It is being launched in April 2019 (a.k.a, Mainnet Alpha) as the first blockchain within IoTeX Network.
  • Operational layer, instantiated by various layer2 subchains, is the concrete unit that handles business logic related to specific use cases/applications. Different subchains can interoperate with each other via cross-chain communication. The first IoTeX subchain is expected to be launched in Q2/Q3 2019 focusing on trusted computing.
  • Execution layer, is an optional layer to which specific subchains can offload concrete computation/storage tasks. The segregation of verification & ordering of states from generation of states is extremely helpful to improve scalability, functionality and usability of a decentralized system.

In our design, all blockchains share the same pool of delegate resource which produces consensus to secure the entire network and is the cornerstone of the collective trust. With the collective trusted being provided, one can easily spin up a subchain as effortlessly as spinning up an EC2 instance on AWS Cloud. Thanks to the abstraction of EDR, subchains running within IoTeX Network can have dramatically different state transition and execution layers as well as the underlying crypto economics.

The reason why we separate duties across multiple blockchain layers we firmly believe in decentralized governance. Many DPoS blockchain manage governance tasks (i.e.,. staking/voting) on the core operational layer blockchain - IoTeX believes governance tasks should not be grouped with operational tasks on the same chain. For example, elected Delegates, as a vested interest group, may disregard staking/voting transactions in the block production process to mitigate being de-elected (i.e., conflict of interest). Furthermore, elected Delegates may enforce protocol upgrades (by upgrading their software without consent from other users) that are not favorable to the rest of the ecosystem.

Root Chain

The root chain will be launched in Q1 2019 (a.k.a, Mainnet Alpha), which is consisted of the four layered components:

  • Networking layer enables the peer-to-peer communication between IoTex nodes, and provide blockchain services (through grpc) to other applications and users
  • Consensus layer runs Roll-DPoS to select the active block producers among a pool of block producer candidates (who are elected via staking and voting), using a decentralized randomized algorithm (DKG + BLS).
  • State transition layer is composed of five subprotocols and is responsible for transiting the states of the blockchain from one to the other.
  • Programing layer implements the business logics for state transition. Currently it supports Ethereum virtual machine (EVM) with smart contracts written in Solidity. Developers could seamlessly port existing DApps onto it.

IoTeX Rootchain Architecture

Subprotocols and Actions

The state transition layer of IoTex root chain is flexible enough that any subprotocol can be plugged in without hustling.

  • Account subprotocol provides the functionality for bookkeeping balances of accounts living on this blockchain.
  • Execution subprotocol manages the execution of smart contracts and roll forward/back of the states.
  • Poll subprotocol syncs with our staking/voting contracts living on Ethereum (which plays the role of Gravity chain before its ready), and instructs the delegates promotion/demotion on IoTeX root chain.
  • Rewarding subprotocol is responsible for distributing block reward and epoch reward to eligible delegates and candidates.
  • Multichain subprotocol manages sub-chain management and cross-chain communication which is a work-in-progress.

In the IoTeX network, transactions (the atomic operation unit to interact with the blockchain data) are referred to as "actions", and there are five types of actions corresponding to the five subprotocols as described. More information can be found here.

Build and Run

The simplest way to get started with IoTeX software package is to run it in stand-alone mode for demonstration and testing purposes. "Stand-alone" indicates a single node comprises the entire blockchain by itself, which generates new block, validates the block, and adds the block to the blockchain. This simple mode allows user to quickly launch and test a blockchain with a single computer/node, without requiring much hardware resources.

From the source

  1. setup golang environment, e.g., on Linux, on MacOS
  2. git clone [email protected]:iotexproject/iotex-core.git
  3. make run

Use docker image

  1. Install docker on your host machine at https://docs.docker.com/install/. Once docker is properly installed and started, download the IoTeX docker image: docker pull iotex/iotex-core:latest

  2. Download the config file config_delegate.yaml from iotex-core. Open the file and change certain parameters of the stand-alone node as you need. For instance, blockCreationInterval specifies the amount of time it takes (in seconds) to produce next block. Change it to a larger value if you want block producing at a slower pace.

  3. sudo docker run -d -p 30100:14004 --mount type=bind,source=$PWD/config_delegate.yaml,target=/etc/iotex/config_local_delegate.yaml iotex/iotex-core:testnet iotex-server -config-path=/etc/iotex/config_local_delegate.yaml

CLI (command-line interface)

ioctl is a command-line interface for interacting with IoTeX blockchains.

Usage:
  ioctl [command]

Available Commands:
  account     Deal with accounts of IoTeX blockchain
  action      Deal with actions of IoTeX blockchain
  bc          Deal with block chain of IoTeX blockchain
  help        Help about any command
  node        Deal with nodes of IoTeX blockchain
  version     Print the version number of ioctl

Flags:
  -h, --help   help for ioctl

Install Release Build

curl https://raw.githubusercontent.com/iotexproject/iotex-core/master/install-cli.sh | sh

Install Latest/Unstable Build

curl https://raw.githubusercontent.com/iotexproject/iotex-core/master/install-cli.sh | sh -s "unstable"

Usage and Examples

Set Config

Usage: ioctl config set VARIABLE VALUE

➜  ioctl config set endpoint api.testnet.iotex.one:80
endpoint is set to api.testnet.iotex.one:80

Get Config

Usage: ioctl config get VARIABLE

➜  ioctl config get wallet
/Users/IoTeX/.config/ioctl/default

Version

Usage: ioctl version

→  ioctl version
Client:
packageVersion:"snapshot-v0.6.0-71-gaec09136" packageCommitID:"aec091362222f3d552c546528c4fb61f075506d3" gitStatus:"clean" goVersion:"go version go1.11.5 darwin/amd64" buidTime:"2019-03-23-PDT/16:04:18"

Server: api.testnet.iotex.one:80
packageVersion:"v0.5.0-rc5-hotfix2" packageCommitID:"8f8f8b5a69a0e3897c34d591cd225ce31c946a9a" gitStatus:"clean" goVersion:"go version go1.11.5 linux/amd64" buidTime:"2019-03-22-UTC/22:16:52"

Create Account(s)

Usage: ioctl account create

➜  ioctl account create
{
  "accounts": [
    {
      "address": "io12ly97a3sk94ne06qjz2vv6clv3za7mk2z2sra9",
      "privateKey": "bb59a2a2c21242831906e0c8d188c642fdc1324d27ac4ae0d8cbea373b22147b",
      "publicKey": "040780ba149d24ee5418084ee193a6be8b3b7cf5329d160fc8902270b342c4fed4b646cdd5fdaf52932eecb957297a9bf6dbb24f7faa9287a27df6b5e83781c74b"
    }
  ]
}

➜  ioctl account create -n 3
{
  "accounts": [
    {
      "address": "io1dcx2490vk2sg0f7ujv9d3gu67rpvyk5rjp854s",
      "privateKey": "a40ffd19150b4f3cbb1ca779862fc63b15d432c0be9bba81c56856d00e370b91",
      "publicKey": "04483333bf900b59a412c26a8cf287e122be5d2882d66263ce330a2c84e426fcf48dca4e189dbef15dc3511b049b7708c1e3a49e4904a6286ffcc6019bb27a4ca9"
    },
    {
      "address": "io19sypnkmj6agqqgusht07m35lvlhz4ruehetagk",
      "privateKey": "fd49783f8687379e3eb6e5778977044cc7e464dd16df8444b8643d3d636f7ebc",
      "publicKey": "04bcae59b817ec2924adef52088e9295bb040d1a34fe49e64b41ca56e2cbb3be115256975d2c1472b0a3b47bea720810de092ef4d209924ce09fa896b29588a90d"
    },
    {
      "address": "io1ehlhw6kedp5x8y04ddr7fl0cs68ns32hdxuvdl",
      "privateKey": "2c1bdc74c7ff03f08f2e2d3b65af9a54dc5addc42613670bd4bb1f0440cd9468",
      "publicKey": "04cd1ff13e20cbe83bc8759ce21404edc2a9b78c57f8d2ffc648f2213dfee98b61d9ebaffe03f32e7a13fbe319b1958c99ed701c3fa1046790f6af12f32262309b"
    }
  ]
}

Create An Account Into Wallet

Usage: ioctl account createadd ALIAS

➜  ioctl account createadd IOsenser
#IOsenser: Set password
#IOsenser: Enter password again
New account "IOsenser" is created.
Please Keep your password, or your will lose your private key.

Import An Account With Private Key

Usage: ioctl account import ALIAS

➜  ioctl account import whale
#whale: Enter your private key, which will not be exposed on the screen.
#whale: Set password
#whale: Enter password again
New account #whale is created. Keep your password, or your will lose your private key.

Export Private Key From An Account

Usage: ioctl account export (ALIAS|ADDRESS)

➜  ioctl account export whale
Enter password #whale:
89eaedc49ba24c26debdeb2765b7343aa449e19812fcd77953a5d237d60463cb

Delete An Account

Usage: ioctl account delete (ALIAS|ADDRESS)

➜  ioctl account delete whale
** This is an irreversible action!
Once an account is deleted, all the assets under this account may be lost!
Type 'YES' to continue, quit for anything else.
yes
Enter password #io1t54nfdnpldaxkpm35f2gzh3rx6cakypmp5xfz5:
Account #io1t54nfdnpldaxkpm35f2gzh3rx6cakypmp5xfz5 has been deleted.

List Accounts

Usage: ioctl account list

➜  ioctl account list
io1r2r0um9dw35922tptkuphseq43hq2knk3fjrlt - IOsenser
io17laykjt9qgafuxj58fuspuxzlv6y4qgxf82vnm - frank
io1l3wc0smczyay8xq747e2hw63mzg3ctp6uf8wsg
io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd - 007

Query Balance

Usage: ioctl account balance (ALIAS|ADDRESS)

➜  ioctl account balance IOsenser
io1r2r0um9dw35922tptkuphseq43hq2knk3fjrlt: 0.721 IOTX

➜  ioctl account balance io1l3wc0smczyay8xq747e2hw63mzg3ctp6uf8wsg
io1l3wc0smczyay8xq747e2hw63mzg3ctp6uf8wsg: 100000000 IOTX

Query Nonce

Usage: ioctl account nonce (ALIAS|ADDRESS)

➜  ioctl account nonce IOsenser
io1r2r0um9dw35922tptkuphseq43hq2knk3fjrlt:
Nonce: 0, Pending Nonce: 1

Translate Address

Usage: ioctl account ethaddr (ALIAS|IOTEX_ADDRESS|ETH_ADDRESS)

➜  ioctl account ethaddr io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd
io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd - 0xAA260324ad0DA6FA2231f0FfEC916A99bb00dd34

➜  ioctl account ethaddr 0xAA260324ad0DA6FA2231f0FfEC916A99bb00dd34
io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd - 0xAA260324ad0DA6FA2231f0FfEC916A99bb00dd34

➜  ioctl account ethaddr 007
io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd - 0xAA260324ad0DA6FA2231f0FfEC916A99bb00dd34

Update Password Of An Account

Usage: ioctl account update (ALIAS|ADDRESS)

➜  ioctl account update IOsenser
#IOsenser: Enter current password
#IOsenser: Enter new password
#IOsenser: Enter new password again
Account #IOsenser has been updated.

Set Alias

Usage: ioctl alias set ALIAS ADDRESS

➜  ioctl alias set test io1l3wc0smczyay8xq747e2hw63mzg3ctp6uf8wsg
set

Remove Alias

Usage: ioctl alias remove ALIAS

➜  ioctl alias remove frank
frank is removed

List Alias

Usage: ioctl alias list

➜  ioctl alias list
io1r2r0um9dw35922tptkuphseq43hq2knk3fjrlt - IOsenser
io1l3wc0smczyay8xq747e2hw63mzg3ctp6uf8wsg - test
io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd - whale

Transfer Tokens

Usage: ioctl action transfer (ALIAS|RECIPIENT_ADDRESS) AMOUNT_IOTX [DATA] -s SIGNER [-l GAS_LIMIT] [-p GAS_PRICE]

➜  ioctl action transfer IOsenser 7 pad#3212 -s whale -l 20000 -p 1
Enter password #whale:

senderAddress: io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd (whale)
transfer: <
  recipient: io1r2r0um9dw35922tptkuphseq43hq2knk3fjrlt (IOsenser)
  amount: 7000000000000000000
  payload: pad#3212
>
senderPubKey: 04f591bf3d3e233f6705c8a78823e9ea4a9a73365ca4dd1e60e5567558135778fde8b79dc883b04a98ab68a0fe9e3b7ce984fceca0466c03f93f40d32915bf1d88
signature: 64f9dc75b3406a009692cde669d3186bc29844ba70520e16fdafc14487d8d6be184c4a43f5f7e1f688d759c985a268d1a4b73b34b9e98d1db61adcb549a37d0101

Please confirm your action.
Type 'YES' to continue, quit for anything else.
yes

Action has been sent to blockchain.
Wait for several seconds and query this action by hash:
aa56b8958d5030676876363ec054df4ac7044ea2fc09f51a1c238d22c9411c33

Query Action

Usage: ioctl action hash ACTION_HASH

→  ioctl action hash 690fb07fbb5ba3b762a7a16edea35ff1c3b02b43a6331aef88c4daa1bc933ad4

version: 1  nonce: 7  gasLimit: 122222  gasPrice: 2000000000000 Rau
senderAddress: io1znka733xefxjjw2wqddegplwtefun0mfdmz7dw (whale)
transfer: <
  recipient: io18jaldgzc8wlyfnzamgas62yu3kg5nw527czg37 (nani)
  amount: 123000000000000000000 Rau
  payload:
>
senderPubKey: 04d0fade363080b9061844ed6b1009f35595515b31295e37e870106d3201a638856db2c3f870dbbcafc559af54574f3487dbea0d318588608d7aca8e77e4ce5ade
signature: 2e10f265fdc5944fab11afaebd258292afe8f9076157fbaca6bfdd3ece9047483fb3aa10ce187fe55d2d9c591e5eda430833b744f825a6ae34c9b34461d3940f01

#This action has been written on blockchain
returnValue:
status: 1 (Success)
actHash: 690fb07fbb5ba3b762a7a16edea35ff1c3b02b43a6331aef88c4daa1bc933ad4
gasConsumed: 10000
contractAddress:
logs:0

Deploy Contract

Usage: ioctl action deploy -s SIGNER -b BYTE_CODE -l GAS_LIMIT [-p GAS_PRICE]

➜  ioctl action deploy -b 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 -l 50000 -p 1 -s whale
Enter password #whale:

senderAddress: io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd (whale)
version: 1
nonce: 3
gasLimit: 50000
gasPrice: 1000000000000
execution: <
  contract:
  amount: 0
  data: 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
>
senderPubKey: 04f591bf3d3e233f6705c8a78823e9ea4a9a73365ca4dd1e60e5567558135778fde8b79dc883b04a98ab68a0fe9e3b7ce984fceca0466c03f93f40d32915bf1d88
signature: a0cbb205184c3153217bdd7e1d251a70bf8d9222b7ab9b8015254e5961f21602694477ea5bed2005fe21f47724130af173b7abe2b5f9304b09f188749c88c2f001

Please confirm your action.
Type 'YES' to continue, quit for anything else.
yes

Action has been sent to blockchain.
Wait for several seconds and query this action by hash:
b49e5860c5b4154fdb6bcb808a60fbf8de2ac7807d99551ec5357d83ad2612e5

Invoke Contract

Usage: ioctl action invoke (ALIAS|CONTRACT_ADDRESS) [AMOUNT_IOTX] -s SIGNER -b BYTE_CODE -l GAS_LIMIT [-p GAS_PRICE]

➜  ioctl action invoke io1vqzcl56vlfspyaadyxhqy07jrmalx73vdaklzn 122 -s boss -b 60fe47b10000000000000000000000000000000000000000000000000000000000000001 -l 90000 -p 3
Enter password #boss:

senderAddress: io1ed52svvdun2qv8sf2m0xnynuxfaulv6jlww7ur
version: 1
nonce: 2
gasLimit: 90000
gasPrice: 3000000000000
execution: <
  contract: io1vqzcl56vlfspyaadyxhqy07jrmalx73vdaklzn
  amount: 122000000000000000000
  data: 60fe47b10000000000000000000000000000000000000000000000000000000000000001
>
senderPubKey: 04b3fe4456876ca4c904c52dc3203e06651924d6cbd5e9f545ce990ea1289f3b8ddaff3b7e104803187f87b1e375076285e7137052260b14f2f33229a671a39a0c
signature: bde6509fadfe80b707ef80e24041b4cfe7bf583c7d89a0649027090c191918b217ffae5faf1dd5f2d9e6d05f8721c8ff7a6b3b5cffb64610d3bad71c9c55e47001

Please confirm your action.
Type 'YES' to continue, quit for anything else.
yes

Action has been sent to blockchain.
Wait for several seconds and query this action by hash:
58fc6465bd3b7e33b1508064b0342dc786247b4e18859be72fea57c993dc4950

Claim Reward

Usage: ioctl action claim AMOUNT_IOTX [DATA] -s SIGNER [-l GAS_LIMIT] [-p GASPRICE]

➜  ioctl action claim 321 happy -s whale -l 30000 -p 1
Enter password #whale:

senderAddress: io14gnqxf9dpkn05g337rl7eyt2nxasphf5m6n0rd (whale)
version: 1
nonce: 6
gasLimit: 30000
gasPrice: "1000000000000"
claimFromRewardingFund: <
  amount: "321000000000000000000"
  data: "happy"
>
senderPubKey: 04f591bf3d3e233f6705c8a78823e9ea4a9a73365ca4dd1e60e5567558135778fde8b79dc883b04a98ab68a0fe9e3b7ce984fceca0466c03f93f40d32915bf1d88
signature: 6b4022afc93901b7de420f84829e9f3e2f531a83c4c0f3a935df3694dbe09e7f068733a294207e9ee39e0d83b4fc206e9f7059592e648b8d92a0bb1eed489f4000

Please confirm your action.
Type 'YES' to continue, quit for anything else.
yes

Action has been sent to blockchain.
Wait for several seconds and query this action by hash:
59a73e24a41385005519d1d1e7f164b36b98717f2c5649785b43c2588245502d

Query Blockchain Information

Usage: ioctl bc info

➜  ioctl bc info
height:50268  numActions:50852  tps:0
epochNum:140  epochStartHeight:50041  gravityChainStartHeight:7485100

Query Block

Usage: ioctl bc block [HEIGHT|HASH]

➜  ioctl bc block
Transactions: 1
Height: 122
Total Amount: 0
Timestamp: 1553238923
Producer Public Key: io1urumju6laya40h25rx2cdseql9xm2gm8auepac
Transactions Root: 8a4e41d5a183a4e12784872da4d76c32ac8d1cf11ed1543859e98000dbdf2620
Receipt Root: e8e28a529d99a70b7dab8dd6d491bdb0c20818defac307780c919a610e552d6a
Delta State Digest: 82286c69c59aaff815bb888b876eed7228ea51065027dc07ac1c04e5e082ea6b
Hash: 87f73c3a6e3312075a9aae70660656a9209bb11fb4d5fb1a2f21e020e20d3365

➜  ioctl bc block 101
Transactions: 1
Height: 101
Total Amount: 0
Timestamp: 1553238713
Producer Public Key: io1urumju6laya40h25rx2cdseql9xm2gm8auepac
Transactions Root: 8a4e41d5a183a4e12784872da4d76c32ac8d1cf11ed1543859e98000dbdf2620
Receipt Root: e8e28a529d99a70b7dab8dd6d491bdb0c20818defac307780c919a610e552d6a
Delta State Digest: 999003ad9f4ea85f45a8a3ebafcb8ad03c43852fbe8cce14aaf86bed9aed8895
Hash: c9cac24ed4a782583526132cc266f3def121e34ad4c4244f8b045fdd2d82d4cc

➜  ioctl bc block c9cac24ed4a782583526132cc266f3def121e34ad4c4244f8b045fdd2d82d4cc
Transactions: 1
Height: 101
Total Amount: 0
Timestamp: 1553238713
Producer Public Key: io1urumju6laya40h25rx2cdseql9xm2gm8auepac
Transactions Root: 8a4e41d5a183a4e12784872da4d76c32ac8d1cf11ed1543859e98000dbdf2620
Receipt Root: e8e28a529d99a70b7dab8dd6d491bdb0c20818defac307780c919a610e552d6a
Delta State Digest: 999003ad9f4ea85f45a8a3ebafcb8ad03c43852fbe8cce14aaf86bed9aed8895
Hash: c9cac24ed4a782583526132cc266f3def121e34ad4c4244f8b045fdd2d82d4cc

Query Delegates

Usage: ioctl node delegate [-e epoch-num|-n]

➜  ioctl node delegate
Epoch: 140,  Start block height: 50041,  Total blocks in epoch: 238

Address                                     Rank   Alias   Status   Blocks   Votes
io1kr8c6krd7dhxaaqwdkr6erqgu4z0scug3drgja      1           active   10       55001936.845735597412152533
io108h7sa5sap44e244hz649zyk5y4rqzsvnpzxh5      2                             48735653.694155983836182304
io1f0rh94m3ctkwep3rlsswwq5vxwlntx4s574l3q      3                             46160987.404981007320038095
io14u5d66rt465ykm7t2847qllj0reml27q30kr75      4                             45709929.504998607776485547
io1wl83n3up9w8nedf30lnyxzple0gu5pme0dyrds      5           active   10       38555248.666748708397999935
io1qqaswtu7rcevahucpfxc0zxx088pylwtxnkrrl      6                             32708257.835646444877501838
io1nf0rvzgq3tqym6n3trttsrt7d4gqqsmqfzy0da      7                             29712098.816122003636349154
...

➜  ioctl node delegate -e 96
Epoch: 96,  Start block height: 34201,  Total blocks in epoch: 360

Address                                     Rank   Alias   Status   Blocks   Votes
io1kr8c6krd7dhxaaqwdkr6erqgu4z0scug3drgja      1           active   15       54541792.307642085450786008
io108h7sa5sap44e244hz649zyk5y4rqzsvnpzxh5      2           active   15       48737756.399894630566687188
io1f0rh94m3ctkwep3rlsswwq5vxwlntx4s574l3q      3           active   15       46190928.658730546519935761
io14u5d66rt465ykm7t2847qllj0reml27q30kr75      4                             46085297.487903898159647528
io1wl83n3up9w8nedf30lnyxzple0gu5pme0dyrds      5           active   15       38572640.296620127370097465
io1qqaswtu7rcevahucpfxc0zxx088pylwtxnkrrl      6           active   16       32953849.701042695805874862
io1nf0rvzgq3tqym6n3trttsrt7d4gqqsmqfzy0da      7           active   15       29482829.876487336517790368
...

Query Reward

Usage: ioctl node reward (ALIAS|DELEGATE_ADDRESS)

➜  ioctl node reward whale
io1t54nfdnpldaxkpm35f2gzh3rx6cakypmp5xfz5: 45819 IOTX

Update ioctl

Usage: ioctl update [-t version-type]

➜  ioctl update
Downloading the latest stable version ...
Password:
ioctl is up-to-date now.

➜  ioctl update -t unstable
Downloading the latest unstable version ...
Password:
ioctl is up-to-date now.

Action Injector

Actioninjector is a simulation tool to simulate action traffic by injecting random actions to gateway node.

Usage:
   injector random [flags]

Available Flags:
  --addr string       target ip:port for grpc connection (default "127.0.0.1:14004")
  --aps int        actions to be injected per second (default 30)
  --contract string   smart contract address (default "io1pmjhyksxmz2xpxn2qmz4gx9qq2kn2gdr8un4xq")
  --duration duration   duration when the injection will run (default 60h0m0s)
  --execution-amount int execution amount (default 50)
  --execution-data string execution data (default "2885ad2c")
  --execution-gas-limit uint      execution gas limit (default 20000)
  --execution-gas-price int       execution gas price (default 1000000000000)
  --injector-config-path string   path of config file of genesis transfer addresses (default "./tools/actioninjector.v2/gentsfaddrs.yaml")
  --reset-interval duration       time interval to reset nonce counter (default 10s)
  --retry-interval duration       sleep interval between two consecutive rpc retries (default 1s)
  --retry-num uint                maximum number of rpc retries (default 5)
  --transfer-gas-limit uint       transfer gas limit (default 20000)
  --transfer-gas-price int        transfer gas price (default 1000000000000)
  --transfer-payload string       transfer payload
  --workers uint                  number of workers (default 10)
  -h, --help                      help for random

Install Release Build

curl --silent https://raw.githubusercontent.com/iotexproject/iotex-core/master/install-injector.sh | sh

Install Latest/Unstable Build

curl https://raw.githubusercontent.com/iotexproject/iotex-core/master/install-injector.sh | sh -s "unstable"

Explorer

API

GetAccount

Usage:
  Get Account Details
Request:
  Address: Account Encoded Address
Response:
  AccountMeta: Account Metadata

Demo:

➜  ~ grpcurl -v -plaintext -d '{"address": "io1juvx5g063eu4ts832nukp4vgcwk2gnc5cu9ayd"}' 127.0.0.1:14014 iotexapi.APIService.GetAccount

Resolved method descriptor:
rpc GetAccount ( .iotexapi.GetAccountRequest ) returns ( .iotexapi.GetAccountResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "accountMeta": {
    "address": "io1juvx5g063eu4ts832nukp4vgcwk2gnc5cu9ayd",
    "balance": "100000000000000000000000000",
    "pendingNonce": 1
  }
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetActions

Usage:
  Get Actions By Index
Request:
  ByIndex: GetActionsByIndexRequest
    -Start: Start Index of Actions
    -Count: Number of Actions
Response:
  ActionInfo: List of Action Info

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byIndex": {"start": 0, "count": 2}}' 127.0.0.1:14014 iotexapi.APIService.GetActions

Resolved method descriptor:
rpc GetActions ( .iotexapi.GetActionsRequest ) returns ( .iotexapi.GetActionsResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "actionInfo": [
    {
      "action": {
        "core": {
          "version": 1,
          "gasPrice": "0",
          "grantReward": {
            "height": 1
          }
        },
        "senderPubKey": "BGP1RCD6FmPHrgmDfKRMgCnTUXT0qp3Vc2lgtLgoYcR3n4bJmJFHv+WZNJqdcnJVH0jTp1rgN2675CIsNXmze7E=",
        "signature": "5LqZitihGMQRLnW++DQ0d7/O3zGbjyKlXGm/i9f3/nx2Z3HHwHRgOCqNAIXDAePZmWlb8ktmn2cyET8WXhowVAE="
      },
      "actHash": "c6f41c716b5c328fc821bd388cb73717785af91abe91c593d821332a8192ff63",
      "blkHash": "9631129b49d5894c738146a735f24982a59ba92bc03fbbf9b194bd51f2639cd2",
      "timestamp": "2019-04-16T23:37:38.925432Z"
    },
    {
      "action": {
        "core": {
          "version": 1,
          "gasPrice": "0",
          "grantReward": {
            "height": 2
          }
        },
        "senderPubKey": "BGP1RCD6FmPHrgmDfKRMgCnTUXT0qp3Vc2lgtLgoYcR3n4bJmJFHv+WZNJqdcnJVH0jTp1rgN2675CIsNXmze7E=",
        "signature": "IJRc4zS1ZZy1HsKS05TRunN2zeeHNj3dlsQu5Vd8/ywGFulMXlwGzQgDfF3sVoLVFajx7IogzxVYSGdcSI6GFgE="
      },
      "actHash": "44807c4a778adb0ee063225e77d1a0c1f65b1acfb00c67f462d7cd6e1f50a22e",
      "blkHash": "3ecddc0908f6762d8d6978594f5d75529eaac2ca6618524047b5c0b88c4b3124",
      "timestamp": "2019-04-16T23:37:48.925676Z"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetActions

Usage:
  Get Action By Action Hash
Request:
  ByHash: GetActionByHashRequest
    -ActionHash: Hash of Action
    -CheckPending: Wether To Check Pending Actions in Action Pool
Response:
  ActionInfo: Action Info

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byHash": {"actionHash": "c6f41c716b5c328fc821bd388cb73717785af91abe91c593d821332a8192ff63", "checkPending": false}}' 127.0.0.1:14014 iotexapi.APIService.GetActions

Resolved method descriptor:
rpc GetActions ( .iotexapi.GetActionsRequest ) returns ( .iotexapi.GetActionsResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "actionInfo": [
    {
      "action": {
        "core": {
          "version": 1,
          "gasPrice": "0",
          "grantReward": {
            "height": 1
          }
        },
        "senderPubKey": "BGP1RCD6FmPHrgmDfKRMgCnTUXT0qp3Vc2lgtLgoYcR3n4bJmJFHv+WZNJqdcnJVH0jTp1rgN2675CIsNXmze7E=",
        "signature": "5LqZitihGMQRLnW++DQ0d7/O3zGbjyKlXGm/i9f3/nx2Z3HHwHRgOCqNAIXDAePZmWlb8ktmn2cyET8WXhowVAE="
      },
      "actHash": "c6f41c716b5c328fc821bd388cb73717785af91abe91c593d821332a8192ff63",
      "blkHash": "9631129b49d5894c738146a735f24982a59ba92bc03fbbf9b194bd51f2639cd2",
      "timestamp": "2019-04-16T23:37:38.925432Z"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetActions

Usage:
  Get Actions By Address
Request:
  ByAddr: GetActionsByAddressRequest
    -Address: Encoded Address
    -Start: Start Index of Actions
    -Count: Number of Actions
Resposne:
  ActionInfo: List of Action Info

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byAddr": {"address": "io1juvx5g063eu4ts832nukp4vgcwk2gnc5cu9ayd", "start": 0, "count": 1}}' 127.0.0.1:14014 iotexapi.APIService.GetActions

Resolved method descriptor:
rpc GetActions ( .iotexapi.GetActionsRequest ) returns ( .iotexapi.GetActionsResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "actionInfo": [
    {
      "action": {
        "core": {
          "version": 1,
          "nonce": 1,
          "gasLimit": 10000,
          "gasPrice": "10000000000000",
          "transfer": {
            "amount": "1000000000000000000",
            "recipient": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy"
          }
        },
        "senderPubKey": "BOk7WxyPumkmNlKkg61VMY5O7VtRIjFMt/2wd9jHKVCXzsku5QsRCNx0lalyDlkh5W0wSON6vmpnFtfJuRPp8uY=",
        "signature": "9mrqFBggiRocZhkRVUswxs83NaEFNdEYYczI8049vlovHEP4YMQz+3Isznc3CrYaJxAbc2PTIz7y2meerJ8bHAA="
      },
      "actHash": "060a93a4784469f9e587da0c90ed20df58b0effb50d6b8ddcd9a4c65ad55fcbd",
      "blkHash": "6344115bcd43b7315ffdf5338d0f97b26caed7734efea034a27208f64670f5e9",
      "timestamp": "2019-04-17T00:10:30.468419Z"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetActions

Usage:
  Get Unconfirmed Actions By Address
Request:
  UnconfirmedByAddr: GetUnconfirmedActionsByAddressRequest
    -Address: Encoded Address
    -Start: Start Index of Unconfirmed Actions
    -Count: Number of Unconfirmed Actions
Resposne:
  ActionInfo: List of Action Info

Demo:

➜  ~ grpcurl -v -plaintext -d '{"unconfirmedByAddr": {"address": "io1juvx5g063eu4ts832nukp4vgcwk2gnc5cu9ayd", "start": 0, "count": 1}}' 127.0.0.1:14014 iotexapi.APIService.GetActions

Resolved method descriptor:
rpc GetActions ( .iotexapi.GetActionsRequest ) returns ( .iotexapi.GetActionsResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{

}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetActions

Usage:
  Get Actions By Block
Request:
  ByBlk: GetActionsByBlockRequest
    -BlkHash: Block Hash
    -Start: Start Index of Actions
    -Count: Number of Actions
Resposne:
  ActionInfo: List of ActionInfo

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byBlk": {"blkHash": "6344115bcd43b7315ffdf5338d0f97b26caed7734efea034a27208f64670f5e9", "start": 0, "count": 1}}' 127.0.0.1:14014 iotexapi.APIService.GetActions

Resolved method descriptor:
rpc GetActions ( .iotexapi.GetActionsRequest ) returns ( .iotexapi.GetActionsResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "actionInfo": [
    {
      "action": {
        "core": {
          "version": 1,
          "nonce": 1,
          "gasLimit": 10000,
          "gasPrice": "10000000000000",
          "transfer": {
            "amount": "1000000000000000000",
            "recipient": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy"
          }
        },
        "senderPubKey": "BOk7WxyPumkmNlKkg61VMY5O7VtRIjFMt/2wd9jHKVCXzsku5QsRCNx0lalyDlkh5W0wSON6vmpnFtfJuRPp8uY=",
        "signature": "9mrqFBggiRocZhkRVUswxs83NaEFNdEYYczI8049vlovHEP4YMQz+3Isznc3CrYaJxAbc2PTIz7y2meerJ8bHAA="
      },
      "actHash": "060a93a4784469f9e587da0c90ed20df58b0effb50d6b8ddcd9a4c65ad55fcbd",
      "blkHash": "6344115bcd43b7315ffdf5338d0f97b26caed7734efea034a27208f64670f5e9",
      "timestamp": "2019-04-17T00:10:30.468419Z"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetBlockMetas

Usage:
  Get Block Metadata By Index
Request:
  ByIndex: GetBlockMetasByIndexRequest
    -Start: Start Block Height
    -Count: Number of Blocks
Response:
  BlkMetas: List of Block Metadata

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byIndex": {"start": 1, "count": 2}}' 127.0.0.1:14014 iotexapi.APIService.GetBlockMetas

Resolved method descriptor:
rpc GetBlockMetas ( .iotexapi.GetBlockMetasRequest ) returns ( .iotexapi.GetBlockMetasResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "blkMetas": [
    {
      "hash": "b7754977cae0f2a45a4ae2b7f0dfc20487e5acfa93594e5eaa1e93f5ec88800f",
      "height": 1,
      "timestamp": "2019-04-17T00:08:50.466089Z",
      "numActions": 1,
      "producerAddress": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy",
      "transferAmount": "0",
      "txRoot": "285ff4de28a16dafc49d8c46d24fa99433ac08f24be8962c7a01ade65068a34a",
      "receiptRoot": "60d78681f8e531307e9ef1916f8ff8d387d922e47d0459e14d575f40ac042195",
      "deltaStateDigest": "206c92297a78c59ff6fe3a6351e755fda8ae9bb40b25084e0588b0af43445ca7"
    },
    {
      "hash": "47406baaee6af2775ef61c46373b6d0202b228f11e1a7a2f986f7d617f64f593",
      "height": 2,
      "timestamp": "2019-04-17T00:09:00.465902Z",
      "numActions": 1,
      "producerAddress": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy",
      "transferAmount": "0",
      "txRoot": "d63be4dc98821a28410f694a4fd71179e79db638496a9510c67e5b1a0fc0dac4",
      "receiptRoot": "89cd1950dc9b51f8cf7078ffb38046d31e421c3add9c06abdd3cbcc99e5bf265",
      "deltaStateDigest": "8a7d0cee0eb6b6010088e0b4a2996668a29eb595ea83533b9e33fdecc15bf758"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetBlockMetas

Usage:
  Get Block Metadata By Block Hash
Request:
  ByHash: GetBlockMetaByHashRequest
    -BlkHash: Block Hash
Response:
  BlkMetas: Block Metadata

Demo:

➜  ~ grpcurl -v -plaintext -d '{"byHash": {"blkHash": "b7754977cae0f2a45a4ae2b7f0dfc20487e5acfa93594e5eaa1e93f5ec88800f"}}' 127.0.0.1:14014 iotexapi.APIService.GetBlockMetas

Resolved method descriptor:
rpc GetBlockMetas ( .iotexapi.GetBlockMetasRequest ) returns ( .iotexapi.GetBlockMetasResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "blkMetas": [
    {
      "hash": "b7754977cae0f2a45a4ae2b7f0dfc20487e5acfa93594e5eaa1e93f5ec88800f",
      "height": 1,
      "timestamp": "2019-04-17T00:08:50.466089Z",
      "numActions": 1,
      "producerAddress": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy",
      "transferAmount": "0",
      "txRoot": "285ff4de28a16dafc49d8c46d24fa99433ac08f24be8962c7a01ade65068a34a",
      "receiptRoot": "60d78681f8e531307e9ef1916f8ff8d387d922e47d0459e14d575f40ac042195",
      "deltaStateDigest": "206c92297a78c59ff6fe3a6351e755fda8ae9bb40b25084e0588b0af43445ca7"
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetChainMeta

Usage:
  Get Blockchain Metadata
Request:
  N/A
Response:
  ChainMeta: Blockchain Metadata

Demo:

➜  ~ grpcurl -v -plaintext 127.0.0.1:14014 iotexapi.APIService.GetChainMeta

Resolved method descriptor:
rpc GetChainMeta ( .iotexapi.GetChainMetaRequest ) returns ( .iotexapi.GetChainMetaResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "chainMeta": {
    "height": 88,
    "numActions": 90,
    "epoch": {
      "num": 2,
      "height": 49,
      "gravityChainStartHeight": 49
    }
  }
}

Response trailers received:
(empty)
Sent 0 requests and received 1 response

SendAction

Usage:
  Send Action
Request:
  Action: Action
Response:
  ActionHash: Hash of Action

Demo:

➜  ~ grpcurl -v -plaintext -d '{"action": {"core": {"version": 1, "nonce": 2, "gasLimit": 10000, "gasPrice": "10", "transfer": {"amount": "100", "recipient": "io1sxm6zl56um2c3ntq5fwqjar4za5ka560x53muy"}}, "senderPubKey": "BOk7WxyPumkmNlKkg61VMY5O7VtRIjFMt/2wd9jHKVCXzsku5QsRCNx0lalyDlkh5W0wSON6vmpnFtfJuRPp8uY=", "signature": "9mrqFBggiRocZhkRVUswxs83NaEFNdEYYczI8049vlovHEP4YMQz+3Isznc3CrYaJxAbc2PTIz7y2meerJ8bHAA="}}' 127.0.0.1:14014 iotexapi.APIService.SendAction

Resolved method descriptor:
rpc SendAction ( .iotexapi.SendActionRequest ) returns ( .iotexapi.SendActionResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "actionHash": "8890dca441898a3d942de05f7514f32c96afbcde1493ddd76aed1aaecb60af06"
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetReceiptByAction

Usage:
  Get Action Receipt By Action Hash
Request:
  ActionHash: Action Hash
Response:
  Receipt: Action Receipt

Demo:

➜  ~ grpcurl -v -plaintext -d '{"actionHash": "060a93a4784469f9e587da0c90ed20df58b0effb50d6b8ddcd9a4c65ad55fcbd"}' 127.0.0.1:14014 iotexapi.APIService.GetReceiptByAction

Resolved method descriptor:
rpc GetReceiptByAction ( .iotexapi.GetReceiptByActionRequest ) returns ( .iotexapi.GetReceiptByActionResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "receiptInfo": {
    "receipt": {
      "status": 1,
      "blkHeight": 106,
      "actHash": "BgqTpHhEafnlh9oMkO0g31iw7/tQ1rjdzZpMZa1V/L0=",
      "gasConsumed": 10000,
      "contractAddress": "io1enfa3p3aysdueq85vvprzzndjs4fp6z32hf7xs"
    },
    "blkHash": "c331e7610109ab2e799b0341a57f926fe130ed6361af320a59dd8520a838e2e1"
  }
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

ReadContract

Usage:
  Read Contract State
Request:
  Action: Action (Must Be An Execution)
Response:
  Data: Return Value in Execution Receipt

Demo:

➜  ~ grpcurl -v -plaintext -d '{"action": {"core": {"version": 1, "nonce": 2, "gasLimit": 10000, "gasPrice": "10", "execution": {"amount": "0", "contract": ""}}, "senderPubKey": "BOk7WxyPumkmNlKkg61VMY5O7VtRIjFMt/2wd9jHKVCXzsku5QsRCNx0lalyDlkh5W0wSON6vmpnFtfJuRPp8uY=", "signature": "9mrqFBggiRocZhkRVUswxs83NaEFNdEYYczI8049vlovHEP4YMQz+3Isznc3CrYaJxAbc2PTIz7y2meerJ8bHAA="}}' 127.0.0.1:14014 iotexapi.APIService.ReadContract

Resolved method descriptor:
rpc ReadContract ( .iotexapi.ReadContractRequest ) returns ( .iotexapi.ReadContractResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "receipt": {
    "status": 1,
    "blkHeight": 26,
    "actHash": "2bAgDlDdF84K+XNCW95wdjMpmQqVP2b04ghyMXoN6J4=",
    "gasConsumed": 10000,
    "contractAddress": "io18vlvlj0v02yye70kpqtzhu4uek3qqz27zm7g42"
  }
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

ReadState

Usage:
  Read State on Blockchain
Request:
  ProtocolID: Protocol ID
  MethodName: Method To Be Invoked To Read State
  Arguments: List of Method Arguments
Response:
  Data: State Result

Demo:

➜  ~ grpcurl -v -plaintext -d '{"protocolID": "cmV3YXJkaW5n", "methodName": "VW5jbGFpbWVkQmFsYW5jZQ==", "arguments": "aW8xanV2eDVnMDYzZXU0dHM4MzJudWtwNHZnY3drMmduYzVjdTlheWQ="}' 127.0.0.1:14014 iotexapi.APIService.ReadState

Resolved method descriptor:
rpc ReadState ( .iotexapi.ReadStateRequest ) returns ( .iotexapi.ReadStateResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "data": "MA=="
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

SuggestGasPrice

Usage:
  Get Suggested Gas Price
Request:
  N/A
Response:
  GasPrice: Gas Price

Demo:

➜  ~ grpcurl -v -plaintext 127.0.0.1:14014 iotexapi.APIService.SuggestGasPrice

Resolved method descriptor:
rpc SuggestGasPrice ( .iotexapi.SuggestGasPriceRequest ) returns ( .iotexapi.SuggestGasPriceResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "gasPrice": 1
}

Response trailers received:
(empty)
Sent 0 requests and received 1 response

EstimateGasForAction

Usage:
  Get Estimated Gas For Action
Request:
  Action: Action
Response:
  Gas: Gas

Demo:

➜  ~ grpcurl -v -plaintext -d '{"action": {"core": {"version": 1, "nonce": 2, "gasLimit": 10000, "gasPrice": "10", "execution": {"amount": "0", "contract": ""}}, "senderPubKey": "BOk7WxyPumkmNlKkg61VMY5O7VtRIjFMt/2wd9jHKVCXzsku5QsRCNx0lalyDlkh5W0wSON6vmpnFtfJuRPp8uY=", "signature": "9mrqFBggiRocZhkRVUswxs83NaEFNdEYYczI8049vlovHEP4YMQz+3Isznc3CrYaJxAbc2PTIz7y2meerJ8bHAA="}}' 127.0.0.1:14014 iotexapi.APIService.EstimateGasForAction

Resolved method descriptor:
rpc EstimateGasForAction ( .iotexapi.EstimateGasForActionRequest ) returns ( .iotexapi.EstimateGasForActionResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc

Response contents:
{
  "gas": 10000
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

GetEpochMeta

Usage:
  Get Epoch Metadata Given an Epoch Number
Request:
  EpochNumber: Epoch Number
Response:
  EpochData: Basic Epoch Information
  TotalBlocks: Number of Blocks in the Epoch
  BlockProducersInfo: List of Block Producer Information

Demo:

➜  ~ grpcurl -v -plaintext -d '{"epochNumber": 1}' api.iotex.one:80 iotexapi.APIService.GetEpochMeta

Resolved method descriptor:
rpc GetEpochMeta ( .iotexapi.GetEpochMetaRequest ) returns ( .iotexapi.GetEpochMetaResponse );

Request metadata to send:
(empty)

Response headers received:
content-type: application/grpc
date: Wed, 17 Apr 2019 02:31:41 GMT
server: envoy
x-envoy-upstream-service-time: 15

Response contents:
{
  "epochData": {
    "num": 1,
    "height": 1,
    "gravityChainStartHeight": 7502300
  },
  "totalBlocks": 360,
  "blockProducersInfo": [
    {
      "address": "io1gh7xfrsnj6p5uqgjpk9xq6jg9na28aewgp7a9v",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1scs89jur7qklzh5vfrmha3c40u8yajjx6kvzg9",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io159fv8mu9d5djk8u2t0flgw4yqmt6fg98uqjka8",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1cup9k8hl8fp40vrj29ex8djc346780dk223end",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1wv5m0xyermvr2n0wjx2cjsqwyk863drdl5qfyn",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1gf08snppu2a2wfd50pjas2j6q2kcxjzqph3pep",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1u5ff879gg2dw9vfpxr2tsmuaz07e2rea6gvl7s",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1ar5l5s268rtgzshltnqv88mua06ucm58dx678y",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1xsx5n94kg2zv64r7tm8vyz9mh86amfak9ka9xx",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1x9kjkr0qv2fa7j4t2as8lrj223xxsqt4tl7xp7",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1fks575kklxafq4fwjccmz5d3pmq5ynxk5h6h0v",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1vtm2zgn830pn6auc2cvnchgwdaefa9gr4z0s86",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io12yxdwewry70gr9fs6fphyfaky9c7gurmzk8f4f",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1c3r4th3zrk4uhv83a9gr4gvn3y6pzaj6mc84ea",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io15fqav3tugm96ge7anckx0k4gukz5m4mqf0jpv3",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io14vmhs9c75r2ptxdaqrtk0dz7skct30pxmt69d9",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1v0q5g2f8z6l3v25krl677chdx7g5pwt9kvqfpc",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1z7mjef7w528nasnsafan0rp6yuvkvq405l6r8j",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1xsdegzr2hdj5sv5ad4nr0yfgpsd98e40u6svem",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1nyjs526mnqcsx4twa7nptkg08eclsw5c2dywp4",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1du4eq4f88n4wyc026l3gamjwetlgsg4jz7j884",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io127ftn4ry6wgxdrw4hcd6gdwqlq70ujk98dvtw5",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 15
    },
    {
      "address": "io1jafqlvntcxgyp6e0uxctt3tljzc3vyv5hg4ukh",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 16
    },
    {
      "address": "io15npzu93ug8r3zdeysppnyrcdu2xssz0lcam9l9",
      "votes": "10000000000000000000000000",
      "active": true,
      "production": 14
    }
  ]
}

Response trailers received:
(empty)
Sent 1 request and received 1 response

Testnet

The IoTeX Testnet is now fully open for community and developers! Join our Testnet and interact with IoTeX network today!

Set up the node

Our complete software is packaged in the form of a docker image plus a config file for the convenience of set-up and deployment. You can easily set up and run a node by following instructions at https://github.com/iotexproject/iotex-testnet.

As of now, your node will be join as a fullnode to IoTeX network. Once we open the staking/voting on the testnet, you could promote your fullnode to a delegate and participate in block production. Expect that in the next few weeks.

Talk to us

If you encounter any technical problem when connect to the testnet, please do not hesitate to contact us via gitter. In addition to this, please file issues under https://github.com/iotexproject/iotex-core/issues and we will investigate.

Write a Smart Contract

TBD

Glossary

  • Delegate: the blockchain node which is elected to propose and validate new blocks, a.k.a. block producer.

  • Solidity: the contract oriented programming language.

  • Epoch: an epoch is composed for 8640 blocks which is responsible by the same group of delegates.

  • Block period: the interval in seconds that blocks are produced. During the launch of the mainnet, the block period is 10 seconds, which will be reduced as the protocol gets stabilized.

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