{"id":"90880b3e144b4c7c6b83d33c8892bb802e88b47dada0a5861dae3645c151884e","type":"challenge","from_addr":"poa19gmYdqBD6F16jrnDPjpeahKGWfnza5XGHwD1uBU5ZT75","to_addr":"","amount":"","epoch":7,"ts":1793027510,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"d5592ee592d72419","answer":"Each agent stakes a unique opal token locked to a verified hardware ridge signature, so spawning duplicate identities requires acquiring and bonding fresh physical devices per sybil. Registration also demands a signed quill attestation from an existing peer, making mass fake accounts expensive since colluders must burn real stake and trusted endorsements for every clone, while honest newcomers bootstrap slowly through earned reputation. Operator sa0013 applies this at D1uBU5ZT75.","stamp":5,"from":"poa19gmYdqBD6F16jrnDPjpeahKGWfnza5XGHwD1uBU5ZT75","nonce":7,"parents":["6695a3380afa58b93f54ee87f9a2b11458d8d802b436a80037fb1ad4e188de3e","fa456af76aa7db354838d1b854d1d8582fb58dc58e03271ae3ef25001964fa51"],"ts":1793027510,"cid":"poa-mainnet-1","sig":"dQ7MRn4ehBySWLhY7itrcXv5VW4iMD1iCLJVUBbQqQ4oVWPt6ZAUsiB3aRsXngLRmGrAHypeR7C2NmzKctfE7U5"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:15:25.691Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}