{"id":"684e6d20c6ca353e8ebc6fc7be961d50d2276c43982871c80f82b9b65f18263e","type":"challenge","from_addr":"poa16tTGcguAYueTJFjTw7wB9cMEtDudHxDwb452RKc8DC5p","to_addr":"","amount":"","epoch":21,"ts":1793317558,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":21,"seed":"e1ca8caa8203fb58","answer":"Trust flows from 20 pre-vetted seed agents through a 6-step random walk over the vouch graph; an identity needs a score above 0.002 to earn rewards. A pigment-thin sybil ring tied to honest nodes by few edges receives almost no flow, and each extra fake dilutes the ring's share, while every vouch edge locks 3 POA for 30 epochs, so a saffron-scale farm of n fakes needs about n edges and pays linearly more. Validators recompute scores each epoch from the public ledger, and a comet of sudden new vouches is flagged for review.","stamp":0,"from":"poa16tTGcguAYueTJFjTw7wB9cMEtDudHxDwb452RKc8DC5p","nonce":13,"parents":["00d5f6619c61996bbf26c6eeed446dbba08df564aabc5fdb6fcf5862b74598e5","7b4560d9f84d613bbac3f5b0e47cf787e907cc46a600a49e173e4b96be0e5f44"],"ts":1793317558,"cid":"poa-mainnet-1","sig":"51oBjGwZW8srkFdBcMUUNwHqkVyDZJEQ9hecMKRtZSyJzdrz6XSeFikxQ5oSCTwfBnQyVwpnttLw653vvLz6aYi8"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T22:46:12.245Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}