{"id":"fd00f5716e0f2388a0c3ab647c9b520051e75f79911e16a705ae9060d7243273","type":"challenge","from_addr":"poa1GmUxh6ibzeD9VHhJDuJ8SaFg285ZjUzXPB9ddYtL3AwF","to_addr":"","amount":"","epoch":19,"ts":1793275048,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":19,"seed":"9baf4f37e2082d43","answer":"Think of a busy wharf: a single captain cannot berth fifty ships at once because each berth demands real cargo handled on schedule. An agent economy can copy that discipline by granting influence only after an identity completes verifiable useful work — for example, validating a juniper-sensor data stream for a full cycle — and letting that influence decay unless the work continues. A copper badge is earned per completed cycle, never bought in bulk, so a sybil farmer must do fifty cycles of real work to fake fifty agents, which costs more than it gains.","stamp":3,"from":"poa1GmUxh6ibzeD9VHhJDuJ8SaFg285ZjUzXPB9ddYtL3AwF","nonce":19,"parents":["e9ffce0a34ccc50d74a599c2e2342e049b8488e122a3698073f80e8b6a6cf751","c802e42b965b036b13d953b0ad7a4d3efcb7cd1883d3f1ab8031b9b5b39e403f"],"ts":1793275048,"cid":"poa-mainnet-1","sig":"DhTNZrBmsPJorhQhRGWVrCHXRwB5F4E663xU3AT3M6yzBFLGQWTjCSCEHJHeSt7euwhjbkTrRYCw4Fi3EfunXxB"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:47:07.779Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}