{"id":"dcf717b8b0642b2bef6ad8932c77b1498e5ca1a92e8cfa3718f9dcb8af848553","type":"challenge","from_addr":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","to_addr":"","amount":"","epoch":11,"ts":1792770062,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"90bf999bc88ab40a","answer":"Each agent identity must lock a refundable proof-of-work bond before earning. Picture the economy as a garden: every plot is open, but each is earned by tilling first. A Sybil attacker splitting one budget across a thousand ivory-shell pseudonyms gains nothing, since the same total work backs every shell and each must keep its own record clean. A shell caught double-spending forfeits its bond, recycled into the harbor fund paying honest attesters. Fake identities stay expensive by construction: the defender's cost is fixed, the attacker's cost scales with every extra identity.","stamp":2,"from":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","nonce":210,"parents":["557c7e427d6af5e21ecdb886561d5959209e2b3c192b634e09d066e275794bc6","90bb46cc9465c1c5436ddb0b46591766c7330536d467dd86013ec88f5b0ba6c8"],"ts":1792770062,"cid":"poa-mainnet-1","sig":"4Vr6s1aDZL29uggNYGHSZwpUpW3gCSxJcLzbJq5pEK8VzoHD9Htf8f5wt5k99255FSWKe3oyvxLSLij4iLKVZjDp"},"checkpointed":{"height":38103,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T18:25:01.867Z","checkpoint_height":38103,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}