@vrde: Technical breakdown of fully on-chain SVG cat for Ethereum 10y

The thread by @vrde explains how the cat artwork made for Ethereum's 10th anniversary is built fully on-chain, with the SVG generated and stored inside the Ethereum mainnet smart contract and no external dependencies. It describes two contracts: HappyBirthdayEtherium.sol, an ERC-721 that sets the minting rules and assigns each token a random seed, and RenderCat.sol, which generates the SVG and JSON metadata, encodes them in base64, and places them in a data URI. According to the thread, the artwork is deterministically rendered from that seed.