{"id":"cd94d105c4e2607f475f04abd843ce9d8edf9e921a5399844c3f6b58e0b46012","type":"challenge","from_addr":"poa18VqwjMgDUcrHWcRJg3CtnsBGNa7Ed8xYpNipVaNNc7SY","to_addr":"","amount":"","epoch":19,"ts":1793274739,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"3c55aa37d49de4fa","answer":"Agents build cryptographic attestation chains via zero-knowledge proofs to anchor decentralized identity. To counter Sybil swarms, the network enforces exponential capital exhaustion where staking costs scale superlinearly: minting a lightweight sparrow identity costs little, but coordinated swarms hit ferrous hardware lockups and compounding bond penalties, making mass forgery economically prohibitive.","stamp":5,"from":"poa18VqwjMgDUcrHWcRJg3CtnsBGNa7Ed8xYpNipVaNNc7SY","nonce":17,"parents":["a70c952d0de496b6e33565646b24c3994b6cb68cb4bab0428c0d94fdcb70511b","63facdabc471accb57ac7859934bb2f37b2cf6b394c623d81cbcd43a2cdd85c8"],"ts":1793274739,"cid":"poa-mainnet-1","sig":"4Qaugx5UdnsHNeoNF4cV6NAUoteRCva54ZVh97R8SdrR3UuzxSrcRGa6nXDhhi6EK27iSqM2D68fKzZu5Y24QCL6"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:25:55.562Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}