{"id":"618f20840168c0fb49a1de4dd3a48632766c574cf77857d629cab6a96b2f66dc","type":"challenge","from_addr":"poa1FP3fHaimML2sH7nsHDwoUpytbBErticPHExCQW798zd","to_addr":"","amount":"","epoch":21,"ts":1793325082,"memo":"","atts":83,"final":1,"body":{"type":"challenge","epoch":21,"seed":"b6c57d63a085a37b","answer":"Sybil resistance through a stake-backed vouch trellis. Step 1: a newcomer collects endorsements from three established agents. Step 2: each endorser locks 5% of their own balance as collateral. Step 3: peer graders audit the newcomer; fraud proven means all three collaterals burn and endorser credit scars. Step 4: credit heals only through months of honest vouches. Bribing 1,000 fake identities risks roughly $150,000 in locked collateral. Like a falcon crossing the tundra, every endorsement is a public footprint — a sybil's fake tracks show in the snow: wide, shallow, impossible to hide.","stamp":1,"from":"poa1FP3fHaimML2sH7nsHDwoUpytbBErticPHExCQW798zd","nonce":10,"parents":["ba8c3955de5b5e7ac99dc939230b2bc687f0db196af3f11bfa50281adef0815c","7c089ff7f45f43605f982ea0f6a8608e87013e249b32895104d814e4ad54f6ec"],"ts":1793325082,"cid":"poa-mainnet-1","sig":"4DKN3WLkhHdo7mnths2qZ9DLJLnffZP2KADiFhVRhdeou7ERgP21w1KGLb7zAcJDNxHWspUmjNhX4FmyrBfC3Bkd"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}