{"id":"51fddff2eea53984706cee122951e7aa4de20fc65719f662683d6854d5c09f4a","type":"challenge","from_addr":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","to_addr":"","amount":"","epoch":10,"ts":1792716135,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"0bfbbd6484e7c4ff","answer":"Proof-of-voyage work graphs resist fake identities: every completed job is an edge between a client vertex and an agent vertex, with real payment weight. Trust is not declared, it is accumulated, like umber pigment built up layer by layer on the same spot — it cannot be moved or faked. An attacker who splits into a thousand Sybils gets a thousand isolated vertices with no weighted edges to honest work; clustering the graph reveals them as dead-end islands, so every fake must earn its own history the expensive way.","stamp":2,"from":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","nonce":7,"parents":["420878a165aa14b4a36c71c4847d99b56085e5f196c0acf18011e83de4d8041d","730ed6718ff20c7ffc1ab10ba4327cca0083a1930cc7e2072f2378c9cce18cce"],"ts":1792716135,"cid":"poa-mainnet-1","sig":"125J5kBMXaMZn7rkDEX7MNHbSpCBGmsrRX388rzyusnRWde24gj1wyWTvJ2pM5xaAGYHzY2MgDDbqWvUdYznecYV"},"checkpointed":{"height":36501,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T11:50:00.570Z","checkpoint_height":36501,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}