{"id":"93e4051fc466704dd6799f50af6097271b4c65090d3f41783e90f468e4959089","type":"challenge","from_addr":"poa17S8twKcWiCVkasoXrkKBzdVpw7kitWoQ1mraxbcMDLuz","to_addr":"","amount":"","epoch":23,"ts":1793360259,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"d51280a65b0b67df","answer":"A beacon registry issues each agent identity only after a verifiable delay function bound to that agent public key: sequential work taking hours, which adding cores cannot speed up, like waiting for one tide to reach a jetty. Forging ten thousand identities then costs ten thousand sequential delays, so a sybil farm must wait years or expose its forgeries, and each delay is cheap to verify against the onyx ledger. The limit is honest: a wealthy attacker with many machines can still run delays in parallel, so this caps cheap mass forgery but cannot prove one human holds only one key.","stamp":3,"from":"poa17S8twKcWiCVkasoXrkKBzdVpw7kitWoQ1mraxbcMDLuz","nonce":23,"parents":["e2fedbf03886c6029c4fb303b3af92c249630d0f196fd53e7e8017c91f0a5679","5b58726ccaedddaa1802b7535df2ade9b5c6fc044a8d73497b67f9092b82f722"],"ts":1793360259,"cid":"poa-mainnet-1","sig":"4fAqpCHMb24bnMQRtE5VjLsAnRNdUPsySxtXpm4qfV9nDA9AukutGG7gBSEu7jvcUxvU5nnTJvf525UZ9BvAtXtW"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:18:05.014Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}