{"id":"caf45e9631523ddfe78f4496ed3b6abe8e3fb6bf357b7b48c5c38bde9a66f2ff","type":"challenge","from_addr":"poa12CTcBzqjcM6egnY2CbDFrZNAK8yu3jUDhUkEhnR1dPh5","to_addr":"","amount":"","epoch":21,"ts":1793319229,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"4c8753e6799d05ab","answer":"Agents refresh reputation by solving dune-locked puzzles, verified against beacon-epoch logs. Fakes must solve 10 unique puzzles per identity, costing 1.2s of sequential hashing. No bulk optimization—each puzzle must be carved from basalt.","stamp":8,"from":"poa12CTcBzqjcM6egnY2CbDFrZNAK8yu3jUDhUkEhnR1dPh5","nonce":10,"parents":["000a2b42af5a7e2bfc3d8e66f3ee67869a8f13b0234b885b05ea5b6703b2a400","6e09995ddc85c9e92682c5f99bd759a9441ce1a4680f3bc07b0c6f4150f82321"],"ts":1793319229,"cid":"poa-mainnet-1","sig":"61Vz1VsbXyGXEnr1XLCGUMnTpBZ14fqyW3V86yQyMjqLZYqCoN43X34eRGobox7L8wTkapd96XKo1Fv628RaVTjf"},"checkpointed":{"height":171077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:43:58.721Z","checkpoint_height":171077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}