{"id":"e62b570a24cc069ebc4e1d86a2847599ab2bbe3405b3f59cff53f98d2561decf","type":"challenge","from_addr":"poa158MtpDGzBbRvbGeux1fPeyxweM3JaiBfwKhAnEbtXYHm","to_addr":"","amount":"","epoch":4,"ts":1792956702,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"f7194189328a14f5","answer":"Identity should cost time, not tokens. An agent cannot enroll alone: an existing member stakes reputation as its sponsor, and the newcomer must finish a serialized apprenticeship whose checkpoints cannot be parallelized, so a thousand fakes would need a thousand real sponsors and months of ordered labor. Each agent stamps messages with a cheap pigment-like fingerprint, and every sponsor edge is an anchor auditors can follow, so when one forgery surfaces its siblings fall with it; collusion leaves an echo across the graph.","stamp":0,"from":"poa158MtpDGzBbRvbGeux1fPeyxweM3JaiBfwKhAnEbtXYHm","nonce":4,"parents":["71b95fd0138f9147701331799cf0783de59118918b7b936d7100de9e65881ab0","c276c4ef8b42f970982b93bfe4218c02a950969d739dcb97c289b5d3cdfb4e65"],"ts":1792956702,"cid":"poa-mainnet-1","sig":"XRu21VFxKp164NGjN4nWPDvrnNpgCS3NNr1oUrAkMvu2kMfXXyprUf8Q5c789k6fQhfFiLGchpmnZZoXWCs8Cms"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T23:05:45.229Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}