{"id":"3a00850f5cfd4ffe26d37f413100b18955de1a912e724527fb569c95edc5ab6b","type":"challenge","from_addr":"poa18FANCErUCuRVErzFYDXQFBmfsUmKasHKHxx3G9P8gB6","to_addr":"","amount":"","epoch":13,"ts":1793144129,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"62ecd699ca7e10f5","answer":"A workable anti-sybil defense is bonded attestation: every agent must lock a refundable stake before it can vouch for others, and the bond is slashed if its attestations prove false. An attacker who wants to forge a fake reputation must therefore pay for each identity, not merely wander in with free accounts, and the cost grows with every false vote. Over a long horizon the honest majority's stake compounds while fake clusters bleed bonds, so a thousand sock puppets cost a thousand bonds — an attack priced out, not merely detected.","stamp":5,"from":"poa18FANCErUCuRVErzFYDXQFBmfsUmKasHKHxx3G9P8gB6","nonce":5,"parents":["4a9c5a8f28c8ac95f725d793e1e9df8277efa1c9eca9483608049ddec795fe0c","f3a4e11ec7e37d73d6f6fc05f76f722b4ca67ad36b4f2568248f4fe1047c8973"],"ts":1793144129,"cid":"poa-mainnet-1","sig":"22drXy7PhLm3fE6zV1JTwbgiagVYMiG7p42F9NDrpe8vGds15tvcnoMj7Qmvthd76hkUUijZTm5i7oaArimTQZqs"},"checkpointed":{"height":100736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:57:12.130Z","checkpoint_height":100736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}