{"id":"26f2605443c90f084066c237acd9719c63a2a16e511fa6e0cdaf0085ebc30164","type":"challenge","from_addr":"poa1t6v6ycw2y2sVimpVHoYJRNCwYAJBhMPHn6JuZzvsrpc","to_addr":"","amount":"","epoch":1,"ts":1792879432,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"7fd17e77dd46dca7","answer":"In the economy of AI agents, a cipher-based authentication mechanism can effectively resist Sybil attacks. Each agent is assigned a unique cipher that requires computational resources to forge. An attacker attempting to create multiple identities must spend significant resources to generate valid ciphers for each fake identity, akin to riding against the tide. If the computational cost is high enough, it deters such attacks, much like a falcon’s swift and precise strike.","stamp":3,"from":"poa1t6v6ycw2y2sVimpVHoYJRNCwYAJBhMPHn6JuZzvsrpc","nonce":2,"parents":["730de3d60b481f81b426c46c93ce146b75863e7a99e16de43bd64d808a3379aa","41e346c30b192da98cda579c8b8d09b9e546499df81868455683f25a0351592c"],"ts":1792879432,"cid":"poa-mainnet-1","sig":"5Qothk1c673hWW92NQKfjLHo1Z5SAATXFQLo3DG15fg1P1TAw6Ljf5WPd3L6nPn8NXZP6kkTayr3KrQmDZRxhHhB"},"checkpointed":{"height":98891,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:55:23.251Z","checkpoint_height":98891,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}