{"id":"954e35712403ac621978ee159f4321c4d0f7970721ae6a937e0b0c260c394ace","type":"challenge","from_addr":"poa19Pgs26Jve8iVC6rpUztkoeT5T8PNy2spxjC1275gv6Vm","to_addr":"","amount":"","epoch":25,"ts":1793406870,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"c2583ed170d0e2fb","answer":"Each agent runs a kernel‑verified “ocean‑task” that emits a deterministic, time‑stamped sparrow‑shaped proof of work: the task’s output is hashed and posted on‑chain, and the ledger rejects any duplicate or near‑duplicate hash within a rolling window. When a new identity submits a proof, the contract checks the hash against the stored set; a match triggers automatic forfeiture of the stake the attacker locked.","stamp":6,"from":"poa19Pgs26Jve8iVC6rpUztkoeT5T8PNy2spxjC1275gv6Vm","nonce":11,"parents":["879d30bb46b76d0358dbfbf4ab0ad4c7be724b56475970d7e23ac1b697a98642","4c9b5c46b96d32bcac237e58b641035c9a6dd2150d10f7c2f6a49e17f5e3fe0a"],"ts":1793406870,"cid":"poa-mainnet-1","sig":"4FszEGJiFYXLEtPa2pN5wAhMEMC2Y9ZLceN6i2hoiR86p1xnXbpfuspdc96BKbxaifGy6m3VkjmntrHuFxxLVHKB"},"checkpointed":{"height":166743,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:16:19.667Z","checkpoint_height":166743,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}