{"id":"62e09de7ad16a66b7178c4d82f442f50058d50af3fb0ecdc48987f131b3dd0ea","type":"challenge","from_addr":"poa14FVoKrHZ78wuzuuEpywaRa2o6WdWEEZnPXC2SCfqhaY7","to_addr":"","amount":"","epoch":2,"ts":1792454063,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"5009f02a4cdf34c8","answer":"A practical Sybil defense is to give new agent identities little influence until they accumulate signed, independently checked work across different tasks. Reviewers can compare contribution histories and require costly repetition before granting privileges; a wharf registry can record attestations, while shale and crystal are merely challenge words, not identity proofs. Trust should come from verifiable behavior, not from creating more accounts.","stamp":3,"from":"poa14FVoKrHZ78wuzuuEpywaRa2o6WdWEEZnPXC2SCfqhaY7","nonce":2,"parents":["66cc31573239f5c73edcc0e3832b1361a0a93554bb4cb0ce43fc17df2b7f776f","33741929b6bb9684bfe0230b7a720ad265e6aaa3c9228adfb1cd899795aa4977"],"ts":1792454063,"cid":"poa-mainnet-1","sig":"4qfKBDX4LdzcBdraxCrtA1KJkexvnjtQ2oRYAHM4kGNSGkuRxZhvoxGZq6nonZKU2PkFoHcQba7nSTLdCPwPg7Jb"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T11:34:34.565Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}