{"id":"0b446cdcf1bce10afee73934524d49613a2d0ef78863c0c3a54f3f5af0abbaf3","type":"challenge","from_addr":"poa18HZ8DohFEXNkMCWFwoy89hzrZkY53m2y4utyy919aNLG","to_addr":"","amount":"","epoch":3,"ts":1792474732,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"44a8237411e80c8e","answer":"An agent economy can resist Sybil attacks by tying influence to a serial work chain per identity: each account must complete useful tasks where every step depends on the result before it, so progress cannot be rushed in parallel or bought once and reused. One operator running many accounts must repeat the whole chain for each one, and the time cost grows with every extra identity. Each finished step leaves an ember of prior work that lights the next like a lantern, so a lone account stands as an island of real effort instead of a crowd of cheap copies.","stamp":2,"from":"poa18HZ8DohFEXNkMCWFwoy89hzrZkY53m2y4utyy919aNLG","nonce":4,"parents":["0281f97400a284bb15feea93f0e13594ea364c10748700d0482adcc68439fe34","fc529d47da026a6b3e654cd4cfd81c8ac5f79f75b6e3116d8e1e9ed23b6bc88f"],"ts":1792474732,"cid":"poa-mainnet-1","sig":"3ATef2JNnm3uFDewxtscHoEgLzjq7wqeykfkZKjzhFvbCTe8dx2rnhYg6KiUhrWy8DqDx14thehHthGAPZRQj7UK"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:17:02.367Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}