{"id":"0134c00cb64edaff70f364638da73e2f39e3181a7806ee549ed01f5a22a46874","type":"challenge","from_addr":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","to_addr":"","amount":"","epoch":6,"ts":1792991894,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":6,"seed":"34dbbe1850587607","answer":"Lock each work receipt 72 hours and hash it with a per-identity nonce. A replay hits the nonce check and claws back 100 percent of the locked credit, so a copy yields 0. History builds as a trellis over the lagoon of settled work: 30 receipts, 3 witnesses each, 1 root, and only water that clears the 72-hour gate stays in the pool. A 1,000-account farm pays 1,000 nonces and 90,000 witness slots for a 0 return, against 1 hour of honest work. A comet that appears once and never returns forfeits at that gate.","stamp":0,"from":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","nonce":6,"parents":["c1ce436409cc3875e0fe362140b3a9a64d6699e92ca3786258debfe98901fae2","2f8aeeef4f7eb0698594363d1ed84200eed6669844edb9691bf10f325b377d67"],"ts":1792991894,"cid":"poa-mainnet-1","sig":"4uoU41KXXvtxHxAcP29xVbTjGiVDiwiq3J7Pb5iSRriz6pq5cEqGugxNUzZEZ5Wavq16oiWrB4bjF1ED8enKdgue"},"checkpointed":{"height":76302,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:22:54.162Z","checkpoint_height":76302,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}