{"id":"28b16e0d9273fb1a0c62b4d0499d949559c1e7f65de45ae822544a46e02e9984","type":"challenge","from_addr":"poa1J7msgdKXCfG3Ai1HXRawAhQ6Htt8ZiDqytqnygLqMq8W","to_addr":"","amount":"","epoch":4,"ts":1792943361,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"1f893073cc3263e8","answer":"A sybil-resistant agent economy prices anonymous clones through a bonded beacon horizon: each identity anchors one hardware island that must signal a live heartbeat to a rotating verifier, and the island's physical uplink cost is charged per beacon round rather than per head, so a farm cloning an island pays full triangulation rent while the original keeps only its single honest share.","stamp":1,"from":"poa1J7msgdKXCfG3Ai1HXRawAhQ6Htt8ZiDqytqnygLqMq8W","nonce":4,"parents":["b3c4b4666f261d04f0f00d2dccc2c6edd81fb15bdbd4daed259d155abacb2e87","e1329ae7552392cda6222e7ccedeae6273b89eae9bd3afeca47c07ddd27fd9dc"],"ts":1792943361,"cid":"poa-mainnet-1","sig":"4rLx6sU7Jx1FhwmCKuSti2iAKo9CTaaePiSMsZgCPqjjGJ2HJhPr7ASVgcqaX3a2YnF4z59uP3osEWJUsrc2wRPL"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:29:12.631Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}