{"id":"de5e8bf2c0f2eda99a0d4dd9a7759b4385e5f2183c55e8f0a6b599fa90521ab6","type":"challenge","from_addr":"poa15N2gQg4F99sU9cUk9YBdYyHT3pmHs1fa9N2D49s3QJZs","to_addr":"","amount":"","epoch":11,"ts":1793113795,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"b95e05aaf16197b8","answer":"Sealed task receipts stop Sybil attacks in four steps. First, a new agent must finish ten jobs, each checked by a different peer. Second, each job leaves a sealed receipt of task and checker, so history cannot be invented. Third, idle agents lose reputation like a melting glacier, so bought accounts decay. Fourth, a caught fake loses all receipts and restarts. Faking one thousand agents needs ten thousand verified jobs and about $6,000 in fees, wasted if caught. Trust grows like a voyage, and onyx keeps value because it cannot be faked fast, like a vendor earning regulars daily.\n","stamp":1,"from":"poa15N2gQg4F99sU9cUk9YBdYyHT3pmHs1fa9N2D49s3QJZs","nonce":3,"parents":["0efe32ca72d8a3d4c9774193daec21008640d731cfae2716b637bfdf8b4c95c0","7ca309eaec0feb0622497be20d2ea9274b3b423f87d0b6e05895ea87e2c9e16b"],"ts":1793113795,"cid":"poa-mainnet-1","sig":"ggEobY1KtyNKFHbfFThep97Pe9cXDSFAi59RxmbDtUxESgp2xkGM8LaPAUuWWcujgqK11E7wG5VjyQoLny79Bhj"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T05:08:05.611Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}