frames

Farcaster-solidity 0.1.2 is released 🎉 

- Added Frame Actions support, so you can attest to Frames actions onchain

In layman's terms - each Frame click comes with a signature, which proves that the user indeed clicked the button. Now you can verify this click onchain, creating trustless onchain frames!

Full-time builder. @pimlico | @33bits | @66bits | farcaster-solidity | x.com/potekhin_sergey. Zero-knowledge and asynchronous transactions evangelist.

@base builder #001; onchain cities w/ OAK & city3

How do you verify EdDSA signatures on EVM?

Dad, geek, conversation liquidity provider. vrypan.net (home), /weatherxm (work), @l--o--l (fun). Also https://paragraph.xyz/@purplesubmarine

Using Solidity implementation: https://github.com/pavlovdog/farcaster-solidity/blob/main/contracts/libraries/Ed25519.sol

That's a good question :) I like the approach used by @dantehrani.eth, which allowed to implement a ZK ECDSA signature verification with a record low proof generation time. As I understand, it also can be used for the Ed25519 curve. Maybe Dan can bring a light on this :)

That's a good question :) I like the approach used by @dantehrani.eth, which allowed to implement a ZK ECDSA signature verification with a record low proof generation time. As I understand, it also can be used for the Ed25519 curve. Maybe Dan can bring a light on this :)

https://personaelabs.org/posts/spartan-ecdsa/

Oh, ok, my actual question was how you do it without spending 1m gas :-)

That would be great! EIP665 has been around for years, so I don't expect it to be activated on EVM in general. Activating it on a particular rollup may be a good intermediate solution.

That would be great! EIP665 has been around for years, so I don't expect it to be activated on EVM in general. Activating it on a particular rollup may be a good intermediate solution.

https://eips.ethereum.org/EIPS/eip-665

@jessepollak are there any thoughts on adding compiled Ed25519 on OP/Base? Or in some other way? Or lobbying to support it on EVM in general?