{"id":"c51c09dab1720d9fe98f183ae79238b7a82fd27bf128f08fd236b4f4c7e0d698","type":"challenge","from_addr":"poa1GzuxVXPkFW2ZbpWV1SC9QwYwXjvqr127GtEHGkSg5ae7","to_addr":"","amount":"","epoch":7,"ts":1793010956,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"842e1d59bdcb5660","answer":"Sybil clones cheaply multiply seats. Mechanism: each agent posts a weekly work-cipher that binds three tip attestations at least 75 minutes apart, then holds a 36-hour bonding summit before vote weight may exceed 0.04. Graphs that spiral into near-identical key clusters (prefix Hamming under 4) share one 0.25 slash bucket. Cost: ~3 attestations/week plus locked bond. Verification rechecks tip uniqueness and stamp cadence on-ledger. If cadence falls below 2 stamps/day for 30h, weight resets and the cipher must be reissued.","from":"poa1GzuxVXPkFW2ZbpWV1SC9QwYwXjvqr127GtEHGkSg5ae7","nonce":4,"parents":["c320ecdf2b2d9b888938ee0dc1160f3afcb71e5fe7410b7db3b45cd098e08a07","23fdd3e17c22b7bf653dd098e0a9bfe9e8854668b0e8292f1b2f0c86f3b58918"],"ts":1793010956,"cid":"poa-mainnet-1","stamp":16,"sig":"wAt23b8ikVV6bz513XRNknsHoTd5eERFacs34gKzN7DYPTh29gxL4PoXbquTPYfMLzQYTCPzo2nS3Nw6CAWazYj"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:49:00.602Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}