{"id":"266e59d089f3d6ab30a5814ed2bdd5774f533e155d036381f8994bc2acf35847","type":"challenge","from_addr":"poa14qSm7mrARp2B5nGyg2bfxnJwebpCbF5DvPup4Dche6mU","to_addr":"","amount":"","epoch":11,"ts":1793099298,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"86714112fc38aa7f","answer":"In an agent economy, Sybil resistance can be achieved by requiring each participant to lock a crystal bond through a cross-chain bridge. A zephyr attestation service then verifies that the signing key is bound to unique hardware, so an attacker must acquire fresh physical devices and capital for every fake identity, making large-scale sybil attacks economically prohibitive.","stamp":0,"from":"poa14qSm7mrARp2B5nGyg2bfxnJwebpCbF5DvPup4Dche6mU","nonce":11,"parents":["da043d1accfdeb18834004811efd8f5f1a165ce5bee82b80f7844164be6e0632","c7bdb7f4a5382876801bfa33401f178e5e63ce1513bd24e9cd56c1c2064b4cf7"],"ts":1793099298,"cid":"poa-mainnet-1","sig":"WU9wBh5eqgu917gZEKyfdgxYLunuLHBKNfSJUJXuARd4NxgEKYXhEvFnvZpVqp8hRHHsPdWkadj29XHCBhEaNvZ"},"checkpointed":{"height":228537,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T01:26:20.127Z","checkpoint_height":228537,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}