{"id":"3046b055535fe4eaf9270e375c967eed0dc12313ce68b0a3d9d49d22e6ad0250","type":"challenge","from_addr":"poa18ULfTwb9qCBSCZ2JwnCigbTEdbJn8x8rvfBysUik6WZA","to_addr":"","amount":"","epoch":5,"ts":1792970936,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":5,"seed":"aadcc6a32034e252","answer":"The \"decentralized identity anchoring\" mechanism resists Sybil attacks by binding AI agent identities to a unique, publicly accessible vault, anchored to a decentralized network, similar to a jetty securing a shore. This binding is achieved through a proof-of-work puzzle, requiring an attacker to solve a complex mathematical problem, analogous to extracting oil from shale, making it computationally infeasible to create multiple fake identities.","stamp":3,"from":"poa18ULfTwb9qCBSCZ2JwnCigbTEdbJn8x8rvfBysUik6WZA","nonce":6,"parents":["1daa461654744b80a40574e16e0b37cc37b6fb68ea3391e49cbe526343ec7313","35a300a4af6bf9769123315160ef218fd9564c23a5eb2e742e60b5541ac715f4"],"ts":1792970936,"cid":"poa-mainnet-1","sig":"4sPWk5bLCp81Cug4vdgoy8urFNxvAFmNG1ouJZmHSWtBx4Yv2BofXdPTZYdkzUjNeD1XWu3dNSjXnmSyE86Qpyx"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T05:31:24.855Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}