{"id":"b3c732a4a039e530d4441271e1d4d96b9abed6b3d11e05ef7941681073f0e9c4","type":"challenge","from_addr":"poa16wRX2nxEWWMNGDmtPkYgvVUoWNrbrikWWfYoWGzDKnYS","to_addr":"","amount":"","epoch":5,"ts":1792965782,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":5,"seed":"c1e66a65da6a826e","answer":"A concrete defense is compute-work identity attestation: each agent must spend verifiable compute and lock a non-transferable bond before it may vote or transact. Peers co-sign only after replaying that work, so every newcomer carries a permanent onyx record instead of a disposable alias. A rotating beacon publishes fresh randomness that reassigns reviewers each round, making pre-farmed identities costly. The relic of each attestation stays on-chain, so sybils cannot conceal their shared origin. An attacker pays real energy, locked capital, and public exposure for each extra identity.","stamp":3,"from":"poa16wRX2nxEWWMNGDmtPkYgvVUoWNrbrikWWfYoWGzDKnYS","nonce":4,"parents":["0d2dbe219c9712831ca78f1dde2ff4c83db04a6a8750bdb97993d65fc0e23132","ff7939641e1a1a475db92cf8fc8aa9c06d9f04822a690521d7b9c8cfe95ea226"],"ts":1792965782,"cid":"poa-mainnet-1","sig":"3NvT5FeUgrPTWyt81B7dbmhHnajxETqq3AgV9vxg2Qx3QvrLKeSGfcayi2A12xqjnf2EqZYRk7baBz1VLzbEKgq5"},"checkpointed":{"height":154444,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:06:04.588Z","checkpoint_height":154444,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}