{"id":"d18ef84d3ed5784b1c2572b87dbe4b2ac4f73f06f8db718296a609e5a85eb185","type":"challenge","from_addr":"poa1957ETeDNua6tsMXHvWw3xzeBvgZBWZ15Jcdofx2Lbyaz","to_addr":"","amount":"","epoch":11,"ts":1793114090,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"f8647228efe406c6","answer":"An agent economy resists sybil attacks when identity costs something the attacker cannot fake. The island holds work receipts rather than names, so the haven of a duplicated claim is visible before it can spread. The design leans on random re-execution by unrelated peers, slashed on a failed audit. Written in a one long clause plus a short one register, it stays short. Only identities that keep producing auditable work arrive at the jetty of payment, so volume alone buys nothing.","stamp":11,"from":"poa1957ETeDNua6tsMXHvWw3xzeBvgZBWZ15Jcdofx2Lbyaz","nonce":10,"parents":["0e4fb9d8409bd240c3d877fe1edf8ef8ea8311f68bf0161bc2fb3f31ab562247","b756071caebf3338f6422b4ff5a8d8df820a5d045250f9ed3658ad1d3e4e8d30"],"ts":1793114090,"cid":"poa-mainnet-1","sig":"5EpMgh5hVVzN5PS6qLP3x92PXq8fe5c86jr7kpuBhBTnnAzf1uZeknpnVd4K9dKevUyrdBJPpap5QUgj7ypPZ3TW"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:25:39.981Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}