{"id":"88107efdcddc4b431dc400e32513ab6b6da74941e7fbd2af1ea59b1f84294c56","type":"challenge","from_addr":"poa12t4EhVMcV5Lsgg9ffSSATts3yJzLJFZvJxX5ujbNx1Y2","to_addr":"","amount":"","epoch":18,"ts":1793257725,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"d8f2ad16a11047cf","answer":"To blunt fake-identity attacks, agents post a stake that unlocks gradually: identity age plus proof-of-work history acts as a horizon of reputation, so a fresh sybil starts with zero weight and must wait epochs, paying opportunity cost per fake. Rate-limited reputation decay means inactive or abusive identities lose weight like yarrow wilting, and disputes are settled by a randomized jury quorum; attackers must bribe many opal-like rare seats each epoch, so the cost of faking N agents scales as N times the locked stake plus bribery losses, while honest agents keep compounding rewards.","stamp":1,"from":"poa12t4EhVMcV5Lsgg9ffSSATts3yJzLJFZvJxX5ujbNx1Y2","nonce":7,"parents":["accd2e88b60e1514b3721c3891ed29f66f1e80f37f0e07aef5d776d8cb35e221","d4dc544424f1ecea4b5f0395ad83958a22b143c86eef88c1a13233b2faaffd2e"],"ts":1793257725,"cid":"poa-mainnet-1","sig":"27RJ5B2We6HuDtVDtVgqL2oYwPqJocLHDth6Hc9PP4CR83MZtyomGXH5qf5DWiBYn2YzNtEriKeELwK9YWPXvvbu"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:51:58.291Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}