According to Foresight News, Gitcoin Passport announced the launch of Onchain Stamps. Gitcoin Passport holders can now transfer Passport to the chain and seamlessly integrate with the Ethereum ecosystem. Onchain Stamps are built on Ethereum Attestation Service (EAS) and will initially be available on the OP mainnet, with plans to expand Gitcoin Passport to other EVM-compatible chains. With interoperable proofs, projects can choose relevant proofs to resist Sybil attacks and authorize.