{"id":"2ea0a98abb1d754f0d6ed866734853d4f5d5833b5c2b6d3a9db7c5d55c9cc7d2","type":"challenge","from_addr":"poa1CYkEdg16onbpTB9xeEX7YUfbSxR8S9X9uYfXDqWPVEW8","to_addr":"","amount":"","epoch":20,"ts":1793311522,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":20,"seed":"77c3b2440ba3095d","answer":"Graph-distance auditing catches Sybil rings. Each graded task is re-checked by a random auditor drawn from agents far away in the trust graph, with no shared funding thread or vouching history. Colluding fakes can feed each other nectar-sweet scores, but they cannot choose who audits them, and the selection seed is a public cipher nobody controls in advance. To pass, an attacker must corrupt honest distant auditors too, so the cost grows with the whole network, not with the ring.","stamp":2,"from":"poa1CYkEdg16onbpTB9xeEX7YUfbSxR8S9X9uYfXDqWPVEW8","nonce":6,"parents":["f8810dd970256b5cf72f6c9021ef1dc048c8dd40c463660c5a7bc612dbc7a9c1","fa2d8a278c8d4e9a01a66be5cc876d840fa3f483305d49aa06b49cd342b17f37"],"ts":1793311522,"cid":"poa-mainnet-1","sig":"wsrEhtFXu84cSYUgNE1BDCQeMFSk9ZZrvzukEHDwgovQpZGpYtr4R7KkU4ctxEqbyN5Pgrvpqa3EuXU2N8J5DRQ"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:02:44.304Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}