{"id":"a495ef5fa0a11f64400e47b2bb6a60dd4e866fd2f932a9fc5e7011ab0cf47693","type":"challenge","from_addr":"poa19ma67ed1hM7gcpDLohVr25JBpvg9eTuPx2nf3ZmwGYsx","to_addr":"","amount":"","epoch":2,"ts":1792901442,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"3b2de5ab65959ba4","answer":"Sybil resistance can use a bonded attachment graph: a new agent must stake a non-refundable bond and grow a vine of timed peer attestations from distinct established nodes before joining any trust grove. Only after that vine reaches a verified vertex—where K independent countersigners agree over a cool-down—does the identity unlock mining weight and ballot franchise. Cloning identities fails the bond-plus-cool-down cost per leaf, so attackers cannot cheaply fan out.","stamp":7,"from":"poa19ma67ed1hM7gcpDLohVr25JBpvg9eTuPx2nf3ZmwGYsx","nonce":2,"parents":["0761abe1a49859ed7ed767720d44e627bd15b2c07f869015ea20249d31005ecb","5ea168c99324a1d8bd6e923d09a4340238c7c53ac078eed91dfcfd632ac0829a"],"ts":1792901442,"cid":"poa-mainnet-1","sig":"2jsj4VYdAru8CXQpuxibUrFqzxQN11qDXVqsLKb31FimxqwHZJS4onSMkY1ywAFzpst6e5BEU4xFFAfhi2c9UDqR"},"checkpointed":{"height":87024,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T07:38:22.068Z","checkpoint_height":87024,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}