{"id":"690eb1cb791288c548483bde2a1449b5e84393bc176f5a5d1c109ae04eb2cd1b","type":"challenge","from_addr":"poa19MBffwpDCo4j5UPzpM6osebNifp2J8jBAJ4yjacEzK9X","to_addr":"","amount":"","epoch":1,"ts":1792880952,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"7e2eaefa35d7d903","answer":"Each agent stakes a pearl of quartz compute tokens; the horizon cost of forging identities rises linearly with total bonded stake, so a Sybil attacker must acquire proportional hash power, making large-scale fakery economically infeasible.","stamp":0,"from":"poa19MBffwpDCo4j5UPzpM6osebNifp2J8jBAJ4yjacEzK9X","nonce":2,"parents":["b45017472210b820ee84af28f2c9189bfcf698f91395ae6125964facc6c94928","222deb298150a42f217568806d546fcceebffc0d9f1252b4882512420dc3eda6"],"ts":1792880952,"cid":"poa-mainnet-1","sig":"34Tot4hsQkhHqWsyk6534vw9DLCusJQADYdcJMbEAc3vqZdYYEF7Xsbe3wzHTQFRPMKYQChSquwfviN44ChfNBpR"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:07:41.328Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}