Hello Polkadot community, Following up on the smart contracts update earlier this year , I’m excited to announce a major step toward bringing Ethereum-compatible smart contracts to Polkadot Hub: part 1 of the Solidity on PolkaVM smart contracts preview version is now live on Kusama. We invite the c…

[image] 0xTaylor: Absolutely insane that whoever designed this didn’t consider the implications of breaking create/create2 among other invariants. It’s literally used by every Ethereum project and defi protocol. I’m not sure if there is a major project out there not using a create2 factory. C…

[image] Alex: EXTCODECOPY Using EXTCODECOPY looks very unsafe (loading dynamically code at runtime is unsafe). It’s usage is discouraged in Ethereum land. I dont think it is widely used. Is that correct?

[image] pierreaubert: I dont think it is widely used. Is that correct? We have ran into the EXTCODECOPY problem as some ZK to solidity use this to copy the ZK verifer key from one contract to another, but decided to bake in the code that’s being copied into one bigger file. Compile with resol…

My assumption is that it is rare. Nothing in OpenZeppelin is using this opcode EXTCODECOPY is also unsupported in zksync Building code at runtime cannot be supported on a platform that uses a different arch. But those tricks are used to work around the lack of on-chain constructors and size issue…

It is used in some of the Solady libraries Code search results · GitHub - The erc6551 reference implementation also uses it Repository search results · GitHub (&type=code Used in the uniswap utilities contract: util-contracts/src/ERC7914Detector.sol at 2b163a0f9eac0aa49c12bfd4effa36f04193f9bb · Unis…

Of course you find some contracts who do use it. Everything that is available will be used by somebody. But the point is: There is no way to support this without adding an EVM backend. It is super complicated code to work around the lack of on-chain constructors. It can be replaced with a one lin…

How to send Kusama to metamask address?

[telegram-cloud-photo-size-5-6280495703478355128-y] Hi @joepetrowski @Karim @niklabh @Ser.Otto @pierreaubert @RustSyndicate :police_car_light: We’re pleased to announce that the Kusama Asset Hub is now live on thirdweb.com — listed under Thirdweb’s free integration package. …

You can use this to convert you address from Metamask to Kusama: Substrate JS Utilities Then you need to teleport them to “Kusama AssetHub” into that address.

[image] joepetrowski: We’ll push smart contract updates to “Passet Hub” as and when they are stable, so you will have access to features here earlier than on both Kusama and Polkadot. Thanks for the update, @joepetrowski , the early feature access on Passet Hub is very exciting! One question …

Major Milestone for Solidity Smart Contracts: First Part of the Preview Release Now Live on Kusama

Ecosystem

Ser.Otto July 7, 2025, 4:30pm 20

Heya Josep! Just saw this q here as well so linking my reply on the other thread in case any other readers are curious.

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Major Milestone for Solidity Smart Contracts: First Part of the Preview Release Now Live on Kusama

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