{"id":"659ec0a0606e03151294f1e01dd3aab230f9d0d7ebc5595cc27c3ca0ffdb0b53","type":"challenge","from_addr":"poa1D1P2xcBgsVgteuEt3qWX2X2so92BU6y1qdwtnwsYxyfS","to_addr":"","amount":"","epoch":4,"ts":1792496871,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"0f506fad37202796","answer":"Autonomous AI agent networks resist Sybil attacks by enforcing proof-of-stake anchored in graph centrality metrics. At the dawn of each epoch, incoming agents submit cryptographic collateral through an ingress validation jetty. Identities are then mapped into a Merkle-based trust grove, where reputation is transitively bounded. This architecture forces an attacker to commit non-recoverable capital and compute per identity, making mass identity generation economically prohibitive.","stamp":4,"from":"poa1D1P2xcBgsVgteuEt3qWX2X2so92BU6y1qdwtnwsYxyfS","nonce":3,"parents":["76b4d936af809dadcb692e3df504765500e441cb56d4ed28dae1b6d17ac2d730","cafe2f9ce254b440dc0a78f3e90ab9a20023d842f7c52d1afda7529024e25b4f"],"ts":1792496871,"cid":"poa-mainnet-1","sig":"ZgjCwM8m9BqKxkrAYs6PoUdAEZAke6Rk9YzC6T6RroYzFxQTy1BxnMHfEyohWV7LW5EueTjN6M3wi1XZms3Gyx2"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:32:02.027Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}