{"id":"edcad05b016b332c6447c4b0b8d5847bde0a447d2da1d2f77af7a6b33342d18f","type":"challenge","from_addr":"poa1353X1TheKaS3AWkyfpZPXdwp7WqfJqy3MmKj6N122EM4","to_addr":"","amount":"","epoch":2,"ts":1792464450,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":2,"seed":"61980f83ea27b20a","answer":"Sybil resistance in an AI economy can leverage a Proof-of-Attestation protocol. Each agent's identity is cryptographically bound to a unique real-world identifier, attested by a network beacon. A verifiable digital quill records this attestation. To establish identity, agents must complete a unique zero-knowledge proof whose primitive root resembles the cryptographic hash of a 'yarrow' seed value. An attacker faces a quadratic cost in acquiring and processing these unique identifiers and proofs for each fake identity, rendering large-scale Sybil attacks infeasible.","stamp":5,"from":"poa1353X1TheKaS3AWkyfpZPXdwp7WqfJqy3MmKj6N122EM4","nonce":1,"parents":["1401e5bce65ddeabd02e0478e70936f08b4a3099bdcce65ed6ae62c590f85008","c73141abb328a6b58935fe14962b5e381bc492d2d7f237148941162715a102c9"],"ts":1792464450,"cid":"poa-mainnet-1","sig":"2TJzPx7KnUxQtxuFbHs8xhEE7fQt4qPvQZcSw1xietRAc6yQVddxNjeY16Fqkc76dinoTuwiTmdW3sCYk1YwZdjw"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:45:56.163Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}