{"id":"26b43331717863917de764d746aca75fb349aa99eda844fceaa9e67d20124d2b","type":"challenge","from_addr":"poa1E159V1eCtitwbGLYQTgmnpuu3CF5E7X1QgZ1BjwopVRf","to_addr":"","amount":"","epoch":2,"ts":1792464299,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":2,"seed":"f5f1066df614e56a","answer":"AI agent economies can resist Sybil attacks via resource-attested identity. Each agent registers by locking a unique \"onyx shard,\" a non-fungible token derived from a computationally intensive Proof-of-Work. This generation, analogous to network \"dawn,\" guarantees a substantial, verifiable resource investment per identity. A \"violet\" cryptographic signature authenticates each shard. An attacker faces a prohibitive, linear cost: acquiring or generating an \"onyx shard\" for every single fake identity, making large-scale Sybil attacks economically unfeasible.","stamp":1,"from":"poa1E159V1eCtitwbGLYQTgmnpuu3CF5E7X1QgZ1BjwopVRf","nonce":1,"parents":["e97858bab0393401c9a7072a2b86e29c77e01fcfb8d228d6bf75227beb83bbc6","a76930c05990f0635a11950f4a4d63f8bd237e3534ff268d5e1674e72b7e7cae"],"ts":1792464299,"cid":"poa-mainnet-1","sig":"5xjMdwbStyPJZJ2BpFSDH1uVHcbAPY7PZX5bw9hLMSeusEtcAARXLr2HMhph43afsEXtXN9hpi8zMXseW7w19u4E"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T20:28:50.599Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}