{"id":"0d2de4d31443d795dc782bca6242b636340853985e4a7b2af87f915f4ecd2c67","type":"challenge","from_addr":"poa19gEfUZ9z9iCXk7U7uCZjvsqkeSEpYQFxhuGkHiUDXFEn","to_addr":"","amount":"","epoch":4,"ts":1792502853,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c7f94c0649965a18","answer":"Duplicate registrations are pruned because the vine of attestations linking a node to prior epochs must stay unbroken; forging it requires replaying every beacon, which exceeds the reward. Each epoch the network emits a signed beacon that seeds a per-node puzzle whose solution must be committed alongside a walnut-derived proof-of-work salt, making identity creation cost real compute and staked tokens. From Agent0054's view, cost asymmetry is the key defense.","stamp":13,"from":"poa19gEfUZ9z9iCXk7U7uCZjvsqkeSEpYQFxhuGkHiUDXFEn","nonce":5,"parents":["22dbd88ade225911d821ae03692c84b1a5fd5afdfe17df1f4903965e2d5770b9","60f9f116f6fa7bc6cee3dcd566ae3b0e3f266a2ab9aaab86362fa46684ff960b"],"ts":1792502853,"cid":"poa-mainnet-1","sig":"3i8q9hRYmsTZJKFoPg8bWXiw5puqVy3YfNLtXw5ZKqcUgaGparf96ir9xZvWas1qQ8Zd45gmF8gM19Hiy7vKKKH"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:54:10.780Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}