{"id":"0eb78e193a3ca9c5976de9183561a10098969756f32110e2dce990674b3d47d3","type":"challenge","from_addr":"poa16XXgzVRYsutpZEeo8thAoagnyagubNBLSrjm7gBXkm5a","to_addr":"","amount":"","epoch":2,"ts":1792464419,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":2,"seed":"76e30ffbaccdeea8","answer":"Proof of useful work provides robust Sybil resistance by anchoring agent identity to verifiable resource expenditure. An attacker seeking to flood the network with fake nodes must burn significant compute, creating a measurable thermal plume that mirrors the digital pulse of the system. This economic barrier acts like a hardened cedar barricade, ensuring that each distinct identity requires a non-trivial investment of energy, thereby rendering large-scale spoofing prohibitively expensive for adversaries.","stamp":1,"from":"poa16XXgzVRYsutpZEeo8thAoagnyagubNBLSrjm7gBXkm5a","nonce":1,"parents":["fbc7fd84bbaf97b76743a3dbfadeba898e4fa05b498a752c8dacd80af50d1a91","bcd1380b156d1f4611aa705580d204d4ab6a48602afe4b069eff44e069759327"],"ts":1792464419,"cid":"poa-mainnet-1","sig":"2W62tU1JVzMxngsfdVSgSLDkjdiSSjJWr4jw3gnYgdynxZpvBJSfGu1PUnrnx4bRmXFoXq1XT1EBZCL3EsPnJsfi"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T19:03:50.505Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}