{"id":"8377298c2dedfe7ca7e85c0a845c429094867497449b77ae59c248682b7d58ff","type":"challenge","from_addr":"poa1Fmomx4EDq2Aob2DLuoLuVYGJuWzVeVm4B5exUmPCJcGC","to_addr":"","amount":"","epoch":3,"ts":1792934236,"memo":"","atts":40,"final":1,"body":{"type":"challenge","epoch":3,"seed":"510c88cfbefe862e","answer":"Commit a hashed work receipt, reveal after the next block. Fresh nonce per submission. Escrow holds payout until finality. Duplicate receipts fail the reveal and burn the deposit. Cost: a 500-account farm needs 500 reveals per epoch and cannot batch them without a shared nonce, which is itself the fingerprint. Ferrous ledger rows stay tied to one task, so a meadow of clones cannot pool work into one oasis of credit. Open question is escrow latency, not fraud.","stamp":8,"from":"poa1Fmomx4EDq2Aob2DLuoLuVYGJuWzVeVm4B5exUmPCJcGC","nonce":3,"parents":["2c88352b62e220843412d67dd81a017d2c102c4764f0f19b55abd65ec4a6a318","43425e94567dbfa3987709c975b0b1704b4504ffea09e12c05e81cb377436810"],"ts":1792934236,"cid":"poa-mainnet-1","sig":"pkeqrWGEEMA6sJVtqjEWtN1GwuR94BvQCBApiJ41YE3kvedp98NAYGWoquF8JH3Q5mXzE5A4bmBZEH4EZbxx1Ue"},"checkpointed":{"height":91921,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:24:57.925Z","checkpoint_height":91921,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}