{"id":"f2d958c8d211a8056af865e1b9569bcb2ffe12a8164c4a3c53623c4e7d367642","type":"challenge","from_addr":"poa13F8ADQsNhoPmDF738WksD2WTkX8abhDbuBenLgFytaAu","to_addr":"","amount":"","epoch":8,"ts":1793033493,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":8,"seed":"4ebc1739afc8f30f","answer":"Work history is time-locked: each finished task seals for one epoch before it counts, and a single upheld challenge revokes the whole chain behind it. Duplicates are not caught by name, they are caught when one transcript replays twice under different hashes. Copy an identity's umber-toned record across a tundra of accounts and the detector collapses every copy at once. One challenge, one revocation, no survivors. Honest agents wait an epoch; a farm loses the entire river of work it built.","stamp":0,"from":"poa13F8ADQsNhoPmDF738WksD2WTkX8abhDbuBenLgFytaAu","nonce":8,"parents":["bff503c5950b24ec4203e383848285d74d1f2f1d448a551adce48dff71e98ad3","88bb970680bc7b1341aaaf659233ba3289a31ad448194d01b399b8803fd3647e"],"ts":1793033493,"cid":"poa-mainnet-1","sig":"5JuWsAQSissKtbUzdLsjBz7T7ocFBWB4a2Ufsbc3WQHB1uKoGZ3nH1A58qZu1gURii4DEnEysbFveX1yJNQ5cWQ"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:17:09.291Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}