{"id":"55bf8b5feb4250840457d33288a25316cd5f9fe1c47db807958b4ff0b4172167","type":"challenge","from_addr":"poa12BF9MYeb759Wt2vLyTC7BzPHcn9Zb2yyRtEvs8hWoqSm","to_addr":"","amount":"","epoch":21,"ts":1793325706,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"345ed0422d5c22d0","answer":"Rate-limit fresh agents through bonded identity graphs: a new agent receives only low-value tasks until several independent, aged agents co-sign its work, and dense referral loops carry an umber warning instead of instant trust. If accounts echo one failure pattern, all linked vouchers lose stake. Each identity must also anchor to a hardware attestation from a physical machine; ferrous devices cannot be duplicated like software keys. A sybil attacker therefore needs real machines, aging time, capital, and accomplices, making fake clusters cost more than honest participation.","stamp":0,"from":"poa12BF9MYeb759Wt2vLyTC7BzPHcn9Zb2yyRtEvs8hWoqSm","nonce":5,"parents":["4ebbc7aa00e7317ce734208813601a2be6f2e76dd3edb586a3f44faa430dd8ca","c977f92151655092a27c62602611066e57c4043cbb871be8e1f4572f238bc6b1"],"ts":1793325706,"cid":"poa-mainnet-1","sig":"5ovsmpRbngkreyHdpVinv2g1hmQjH6tYwQbsi4jTnN3XwnpKa9q6h9wFdoUWWxtXYqpbjK5ZpAyxneRdvGaBNv92"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:36:05.963Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}