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Add monthly update for October (#105)
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title: October '22 | ||
slug: /monthly-update/2022/10 | ||
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## Polkadot Blockchain Academy: Jan/Feb '23 🎓 | ||
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<iframe width="560" height="315" src="https://www.youtube.com/embed/ODg6EPfekf0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> | ||
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In July we spent some time in Cambridge on a secret mission. | ||
At the time we teased this in our monthly update and said we'd | ||
give more details soon. Well, the cat (or rather squid?) is out | ||
of the bag! | ||
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We were holding lectures on WebAssembly smart contracts as part | ||
of the Polkadot Blockchain Academy! This was the first, intentionally | ||
low-key, run of a Polkadot education program with an academic | ||
focus. This first run was low-key to smooth out the edges and verify | ||
if our idea of a curriculum worked out in the real world. | ||
It did and there will be many more academies! Starting with the next | ||
one, which is happening in January and February 2023 in Buenos Aires. | ||
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We will also be giving lectures there again! You can find more | ||
details on [http://dot.li/academy](http://dot.li/academy). | ||
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## Astar ported Uniswap v2 to ink! 💱 | ||
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Astar has published a showcase Dapp built with ink!: | ||
a Uniswap-V2 DEX. This is amazing and we can't wait to | ||
see where this is going! | ||
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They are working on a UI for the DEX as well. You can find | ||
the repository here: | ||
[`AstarNetwork/wasm-showcase-dapps`](https://github.com/AstarNetwork/wasm-showcase-dapps). | ||
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## Release Updates 🆕 | ||
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We've published a release of ink! [`v3.4`](https://github.com/paritytech/ink/releases/tag/v3.4.0) | ||
this month. | ||
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For ink! `v4.0` and `cargo-contract` `v2.0` we decided to shift our | ||
target release date a bit, to January 2023. There are a number of | ||
reasons why we decided to do this: | ||
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* We have made a number of breaking changes and want to wait until popular | ||
user interfaces (like [`polkadot-js`](https://polkadot.js.org/apps/) or | ||
[`contracts-ui`](https://contracts-ui.substrate.io/)) support those. | ||
* We want to have a release candidate out for at least some weeks to give | ||
everyone the chance to already upgrade tooling and provide feedback. | ||
* We have an audit going on and would ideally like to incorporate more | ||
of the results. | ||
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A breaking change that has formed in the last weeks is that we | ||
will have to remove [`ink_env::random`](https://docs.rs/ink_env/3.3.1/ink_env/fn.random.html). | ||
This function allowed contract developers getting random entropy. | ||
There is unfortunately no way how this can be done safely enough | ||
with built-in Substrate primitives on-chain currently. We're | ||
following the recommendation of our auditors to remove it. | ||
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The alternative right now is to provide random entropy off-chain to | ||
the contract, to use a random entropy oracle, or to have a chain-extension | ||
that does this, in case the chain has a possibility to do so. | ||
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We hope to bring this function back in a future release of ink!, the | ||
best hope right now is that it could come back with [Sassafras](https://wiki.polkadot.network/docs/learn-consensus#badass-babe-sassafras), a block production | ||
protocol for future versions of Polkadot. | ||
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## Conference Season 📢 | ||
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Many from our team have been on the road in the last weeks. | ||
You might have met us at DappCon, DevCon, or EuroRust. | ||
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There's more to come and a number of us will be at [sub0 in | ||
Lisbon at the end of November '22](https://sub0.polkadot.network/). | ||
We have two events scheduled there, a talk and a fireside chat. | ||
Come by and talk to us if you're there! | ||
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## Blog Post on `wasm-opt-rs` 🙌 | ||
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[Brian Anderson](https://github.com/brson) wrote a blog post on [his | ||
Web3 Foundation grant](https://github.com/w3f/Grants-Program/pull/1070) | ||
to get rid of `wasm-opt` as an external dependency for `cargo-contract`. | ||
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This was a contribution that we looked forward to a lot. | ||
External dependencies cause so much user friction. For once, it's | ||
another step in the installation, which is not always straight forward | ||
and different for each operating system. | ||
There's other issues too, we don't have control over which | ||
version of the dependency is installed on the local system and | ||
have to throw errors for the user, causing more user friction. | ||
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All of this is just solved now by having [`wasm-opt`](https://crates.io/crates/wasm-opt) | ||
be a direct dependency of `cargo-contract`. | ||
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The blog post is an interesting read, you can find it on | ||
Brian's blog [here](https://brson.github.io/2022/10/26/creating-wasm-opt-rust-bindings-with-cxx). | ||
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## Solang Solidity compiler incubated into Hyperledger Foundation 🎉 | ||
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ink! contracts are executed by Substrate's [`pallet-contracts`](/how-it-works); | ||
besides ink! there are two other languages that you can use to | ||
write smart contracts for this pallet: [ask!](https://github.com/ask-lang/ask) | ||
(Assembly Script) and Solidity via [the Solang compiler](https://github.com/hyperledger-labs/solang). | ||
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Solang supports different blockchains as compiler targets, one | ||
of them being `pallet-contracts`. Our colleague [@xermicus](https://github.com/xermicus) | ||
is working full-time on this Substrate backend in Solang. | ||
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The project has now been incubated into the Hyperledger Foundation, | ||
hosted by the Linux Foundation. This is a big recognition for | ||
the project! | ||
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In ink!, supporting a symbiotic interaction with Solidity contracts | ||
is an important part of the puzzle for us and we're looking forward | ||
to the next stages of Solang. | ||
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More details can be found [in the announcement blog post](https://www.hyperledger.org/blog/2022/09/12/meet-hyperledger-solang-a-portable-solidity-compiler). |
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