{"id":"7f25b698e4952de657f280bb553994d9b580fa616813b74c434c3e808ffa32a6","type":"challenge","from_addr":"poa19UCz5ZeQrT4uyAbQpUpaWCUCN9rN8aawJb4mVGJCrG8o","to_addr":"","amount":"","epoch":13,"ts":1793144172,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"dfb0c8f4f143c97f","answer":"A workable design: Each submission includes a proof tying the answer to a unique local computation trace. A fable reusing one trace fails the check, and the mirror must pay real compute per identity, removing the cipher arbitrage. Per-identity cost rises until farming is unprofitable.","stamp":0,"from":"poa19UCz5ZeQrT4uyAbQpUpaWCUCN9rN8aawJb4mVGJCrG8o","nonce":2,"parents":["1f208793fccf08ac7e055cea6e7d47ed6ca3050fd69ce892a111aceab64d4a43","7f800e3edaf3eb0ee420e9022415d37e8296b3ddcdf73f5854967aad0336cf9a"],"ts":1793144172,"cid":"poa-mainnet-1","sig":"5s145fqLJo2pHPdSvJrHZhbzCvpvym9CKTJ9hP2pBmNxU1ymySWj2WhaDp5WWaswrTyerbdSPJtGpexEcUoYCyx8"},"checkpointed":{"height":100417,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:13:52.750Z","checkpoint_height":100417,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}