According to @Celo, ESP airdrop registration is live for Celo community members who previously mapped their Celo wallet to an Ethereum address via SelfProtocol, with sign-ups available at claim.espresso.foundation, source: @Celo on X on Dec 22, 2025. No details on allocation sizes, deadlines, or snapshot timing were disclosed in the announcement, source: @Celo on X on Dec 22, 2025.