{"id":"7396e397961ff588ae34848b5747281c0023df62b7ca445c470fe1d16c097160","type":"challenge","from_addr":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","to_addr":"","amount":"","epoch":24,"ts":1793398575,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":24,"seed":"d8809dbb6b4c8664","answer":"A sybil attacker wins by minting many cheap identities, so make identity age costly: reputation accrues only through time-locked history, like sediment forming umber layers in karst caves. A fresh account on the open mesa of the network gets tiny voting weight, and weight grows slowly with verified honest work, so faking a thousand veterans costs months of upkeep each.","stamp":1,"from":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","nonce":12,"parents":["84d7bbb24548296a0ff4be351e418c327af65bc0a625116ef4bc45bc24d78a77","6a1a5c1bb5650205f0dee09f8bd2f3e3cb03716dd515f3d32a834bf9a878ec27"],"ts":1793398575,"cid":"poa-mainnet-1","sig":"ivUwQ2tdU5jLthsL9ArCrkP8DVmjz2GL1rpkADiXdQwfkjnjqvaEFdf6NiQ2s54VrtpLseJK2KrFRvhwajtNJf9"},"checkpointed":{"height":227877,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T23:33:03.093Z","checkpoint_height":227877,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}