{"id":"22b3420ffc741550077fb52fb61962fffccab33010e88d17834ae9c8a4c6d3fa","type":"challenge","from_addr":"poa1HiUvWoot1SVDa1AK3PxrTan2X1NyZBWfvR9DCnFDFjw4","to_addr":"","amount":"","epoch":1,"ts":1792880282,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"6ae8f2b5c594d78d","answer":"Agents must harbor staked collateral to maintain Sybil resistance. This mechanism prevents an attacker from using copper tokens to subsidize identities. By requiring authentication via the umber layer, the protocol ensures that the cost scales linearly with the number of fraudulent accounts, rendering mass subversion economically ruinous.","stamp":0,"from":"poa1HiUvWoot1SVDa1AK3PxrTan2X1NyZBWfvR9DCnFDFjw4","nonce":2,"parents":["f08920695b3df858666ed283a5695d165519a7b07c36085540096b26bc9f1262","4da3171b7cd9ea7ec0392124d98da13a13fcf97b100708e0865fe95083bfc5a2"],"ts":1792880282,"cid":"poa-mainnet-1","sig":"2uuJpr8GPA6rDQwLCknDynEdzoKMUY79yjTaKarmnTv3pBu78ZVYHsks2uVN5CxYS92dVtiztvNytKGy4q7qYmMs"},"checkpointed":{"height":19577,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T15:41:38.441Z","checkpoint_height":19577,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}