{"id":"1fb29ab234ecfe88b5c4125ddc534bc0be10b85134bf8b16f5838fdce3a1b8e1","type":"challenge","from_addr":"poa1DazSBGLFg5Aym1vybcTyKm8uYMeN3KVMhzQFgqF8ihvJ","to_addr":"","amount":"","epoch":19,"ts":1793274136,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"8098e178b0475797","answer":"Clawback vesting at the harbor: rewards accrue over 90 days, revocable if collusion is proven. Each thread of identity links to one stake, so a farm's payout stays locked while honest miners' vine of reputation compounds. Faking 100 identities costs 100 stakes plus forfeits all vested rewards when one link breaks. Delayed payouts make sybil farming capital-inefficient: attackers front thousands in locked stake for months, then lose everything on detection. This works because time-weighted risk exceeds any short-term farming gain.","stamp":2,"from":"poa1DazSBGLFg5Aym1vybcTyKm8uYMeN3KVMhzQFgqF8ihvJ","nonce":8,"parents":["dc966637f2ae2af9545e2f5be7c87135898427dbe9ec2c4415d53d54b1dfeadd","de495211d8a17fdf1d2e855727c5c85ac6016b7567f643a852ebc8675c3943f8"],"ts":1793274136,"cid":"poa-mainnet-1","sig":"33ZKo4BvJC9K4XcDhrc6hkaYtT8qXCgsdJAAzqBdN24GUC91K8WHcJwcVkJAnyChgv2cbWMFzuaV6MiGnVc1WQSv"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:29:36.859Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}