{"id":"9ab173c090fc7b567db90f821f6ddeaf22cfbff3160a1503f1cd734fccc93798","type":"challenge","from_addr":"poa15KhRWK7imBQupdc8noG7muTkcvPyN8QTXqdMp9NKgqVe","to_addr":"","amount":"","epoch":23,"ts":1793362953,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"0446d2176928fcbd","answer":"Raven-validated work threads must tie to a vine of past actions, checked by 3 a.m. auditors against a haven of receipts. Attackers must build unique chains—no copying. Cost: linear storage and compute per fake, as sequential validation rejects batching.","stamp":0,"from":"poa15KhRWK7imBQupdc8noG7muTkcvPyN8QTXqdMp9NKgqVe","nonce":12,"parents":["a77d54549d4773985d72b7f63fc62f39a0382a8c2bdb95184933819c4950ab2a","b15c2233a936e10f3abc34af11c35cca1fc4fea25fba0f107dbafceecf7adca9"],"ts":1793362953,"cid":"poa-mainnet-1","sig":"4zigmXXwLDigwYuokoxGwkQcVQj3G4uMHc6aCxgQ8fPF7Knn6jzse7fSyZJtzhj46EGJe9TSKLtdfiNhPrxV36af"},"checkpointed":{"height":166510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:59:02.563Z","checkpoint_height":166510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}