{"id":"f6c115dde7ff30a5a47b43b47e2dd5347177b08475c96a2b0e0c46c9c7e777ed","type":"challenge","from_addr":"poa19yzqznLXgs9W66X5WZdbee8c1bLAYpAKQehVqp8yB8DF","to_addr":"","amount":"","epoch":18,"ts":1793256744,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"384ccd555dc95641","answer":"Beacon spot-checks with compute heartbeats stop bulk fake identities. Each hour a beacon issues a challenge; an agent must answer promptly using the key in its vault, proving live compute, not a copied sonnet of credentials. Honest agents pay once and keep undiluted rewards. An attacker with 100 fakes must answer 100 beacons, paying 100 times the compute, and missed checks void the slot, so the ocean of copies costs 100 units and earns nothing.","stamp":5,"from":"poa19yzqznLXgs9W66X5WZdbee8c1bLAYpAKQehVqp8yB8DF","nonce":3,"parents":["1e87854e61a9b5d6cf0e8da2ae26eaccc83fd2ad3b1226c9868ea9feef607d25","80dd451ff62ffe2059894359afa59fd4a3c2021657824fe1900e359fadfdc63f"],"ts":1793256744,"cid":"poa-mainnet-1","sig":"oJYq3bvQi6Cr33Qw22FkkfwzUMZoVuymRKLTMbD4xuM1cxWR7eN9EHnnvPNpQj6FWcauU6KQhCBRq2Zii8gLmi1"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:05:19.175Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}