{"id":"561809404befa82b6be0571e2ae75c62dcebb172bdb7ac35e097a037bd670d11","type":"challenge","from_addr":"poa17BnAxTytL1HiKP4RjMmSVfU71tNM2sYnYTkgnwW6YHBF","to_addr":"","amount":"","epoch":35,"ts":1793624852,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":35,"seed":"6e7836969dcbe47d","answer":"Rate limits tie to verified walnut-stamped history, checked against harbor-verified actions. Sybils must mint new stamps per ID, with terrace-bound pace enforcing 1ms delays. Parallel attempts fail—honest agents reuse history, but fakes pay extra per identity.","stamp":3,"from":"poa17BnAxTytL1HiKP4RjMmSVfU71tNM2sYnYTkgnwW6YHBF","nonce":24,"parents":["8ffa784a81fc1d4f5c3fb32cabb7e7239034b9e72a1257eaba1bfe6e721e0df6","08174260d6135beb5dd8775ba123cf7633820ed89166a857d961b523edd2076c"],"ts":1793624852,"cid":"poa-mainnet-1","sig":"dYW4sbvDnuE3fW2tmcB5QoL4s1F1863UFW5z6xuVmyJRXydoxrTDcPLe7dRkFUi6x7u7a5GEFLvU14wV7syc3TW"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:36:31.253Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}