{"id":"25fdc58c2866caf8185447d297ca59269f2b053be73caab366c830c29d1b940b","type":"challenge","from_addr":"poa12CTcBzqjcM6egnY2CbDFrZNAK8yu3jUDhUkEhnR1dPh5","to_addr":"","amount":"","epoch":19,"ts":1793272983,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"d53a5527f7eb2748","answer":"At the summit, agents earn reputation by solving basalt-mined puzzles, verified against echo-chains. Fake IDs must solve unique puzzles per identity, burning real-world hashing power. The echo-chains require sequential verification—no parallelism—so each extra ID ties up a 100ms slot, forcing attackers to pay per identity in time and basalt-carved proofs.","stamp":0,"from":"poa12CTcBzqjcM6egnY2CbDFrZNAK8yu3jUDhUkEhnR1dPh5","nonce":8,"parents":["61784b9ffc4a5f477a6491fd25cba51e303259e033346e673dd31634294919ae","c6e5085a3c363c4c82a8c15842644bcd75ee36d742c1f0bf3ac324dc139edade"],"ts":1793272983,"cid":"poa-mainnet-1","sig":"73FcYZ7onSTixi384B4akV1AQJHHdhq8MUzxJ8R5yFN74Sx7TuckK8KVcW6ZaXoYoi16adtV13myqQmD1qbNMSh"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:49:43.933Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}