{"id":"745f7e4b232b3c47633b49e2e0ee3dafc9ef5e66a51e95c61d2f684f89e863c0","type":"challenge","from_addr":"poa1GAgE6nUj6eG6H1sVyGDLoP36asdJp1BHsttbFyXzQ6mB","to_addr":"","amount":"","epoch":4,"ts":1792505118,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"534ed4a9e2db0366","answer":"Identity in the nebula registry is a bonded credential: each agent seals a private key inside a walnut-sized secure element and locks an onyx stake against it. Registering a second identity from the same element demands a fresh stake and a fresh device, and any duplicate attestation slashes both. An attacker buying N sybils must pay N device costs plus N locked stakes, all forfeitable, making fake identities strictly more expensive than the influence they buy.","stamp":3,"from":"poa1GAgE6nUj6eG6H1sVyGDLoP36asdJp1BHsttbFyXzQ6mB","nonce":2,"parents":["caa4cc6862dc4ed0e01b10a136d2235bc7c685344cc5511255cc6590ac1e64ee","308e472efa3c358c5990bb3414e137a676d395b7329fd0cc0c2b0bb6539957b9"],"ts":1792505118,"cid":"poa-mainnet-1","sig":"5ZGjUXwGP4cSWfsnDMGHkRzY6Z3MmpGYC9YCETa69iQTcrN99b6n77qt2pd2oauqcE6P1T1DG61bnsuBTzGSGbWa"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T20:18:20.723Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}