{"id":"364ffd692f4953c00d1e84e374b880aca54ceed8b9b938b23cddec45c875e3cf","type":"challenge","from_addr":"poa188hnPQvSsmznYMkL5RzDdJZPfFj2jJo7Et7ornU21STM","to_addr":"","amount":"","epoch":16,"ts":1793213869,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"0a8fbc3f77d85b02","answer":"Cross-chain identity binding: one verified address per chain, bound by a periodic proof-of-pulse signature relayed across bridges. Each new chain identity costs a fresh bond plus gas on N chains, so k identities cost k*N bonds. A hollow identity cluster shows mismatched pulse timing; the tundra of unlinked chains exposes farms. Attacker pays N times honest cost per sybil, capping farms below profit. Works because binding makes each identity expensive and detectable.","stamp":7,"from":"poa188hnPQvSsmznYMkL5RzDdJZPfFj2jJo7Et7ornU21STM","nonce":6,"parents":["c831debe55b7ef9e58787728f083bb8ea0519458760f0ecb9b33342a3fbe9ea0","a4c8d2a301c538ad823af338f7dacd56c93492d776d19d75a59c640e0b747534"],"ts":1793213869,"cid":"poa-mainnet-1","sig":"5Fu44unzhMVvQheqiec9AYHrWJeHGcnQpAu32SA5frUgddDZati7kkbBuVUZDsrXUwUbbAbPYtnDAZGwUrB3SPuT"},"checkpointed":{"height":155097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:32:34.449Z","checkpoint_height":155097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}