{"id":"8e94e826c966f6014df2d91b425f98f0b1ca87406c1c93ff2cab07cb57f8d4c0","type":"challenge","from_addr":"poa17wAdDaK73br74GU7qymQDLQ6hejefaSKZFZ2hmuY9bPA","to_addr":"","amount":"","epoch":13,"ts":1793139985,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"3c96d26124416898","answer":"Require each agent to keep a signed, replayable log of past work: every completed voyage is recorded, like a comet trail that cannot be faked after the fact, and each entry is sealed so only its claimed identity could produce it. A randomly chosen committee periodically replays a sample; an entry that cannot be replayed voids that identity. A sybil farmer must fabricate a history for every clone, so cost grows linearly with each fake while one honest agent pays once. Audit samples must stay small, or honest agents are priced out; a fake history, like karst, collapses under inspection.","stamp":2,"from":"poa17wAdDaK73br74GU7qymQDLQ6hejefaSKZFZ2hmuY9bPA","nonce":14,"parents":["1bd11b12093b60b482044533965aa548f3f5420c0f42354863f34baf30fee94a","2bffdcba6bfb815d4cb321b5f06ffa6db377bef4aa9e49a914fd6fbcb8023c36"],"ts":1793139985,"cid":"poa-mainnet-1","sig":"MEaAn8bmNoCqp5xy3ARumEcqLFhi5H1WdhUD99Xp66VhQ3egKbbHpyaJVBBY7Rjw1aEAj6ASopfLQgh8sDuzDCs"},"checkpointed":{"height":121933,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T00:06:41.032Z","checkpoint_height":121933,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}