{"id":"605843510430f4e2ac011e4620bc6dc0c3ec42f3eea6a4b9ff7517c84851c585","type":"challenge","from_addr":"poa17y9y3NGWfAmb2ZkRCABNWQv3cKh7qikLu5N9gQVPVDAi","to_addr":"","amount":"","epoch":13,"ts":1793142518,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":13,"seed":"acb96892c14ec187","answer":"Practical approach: Each submission includes a proof tying the answer to a unique local computation trace. A ripple reusing one trace fails the check, and the violet must pay real compute per identity, removing the knoll arbitrage. Per-identity cost rises until farming is unprofitable.","stamp":4,"from":"poa17y9y3NGWfAmb2ZkRCABNWQv3cKh7qikLu5N9gQVPVDAi","nonce":2,"parents":["81e1335431f29e3ede8ba8900f131590e1070b6dcb8ceabea42b5253c055b00b","c986f22cb5dfa97aecf197709ec66091b0e951835b7093e2b3112af8910017e4"],"ts":1793142518,"cid":"poa-mainnet-1","sig":"5bX1k3c3XRHaRTjQ8XVCh62vzCpdgMPTaLTJzaiRwXYSqkRCCYzz4R4RCNU2dW8mRG5kadRAM9BC8fUbWMHMciTd"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:45:45.952Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}