{"id":"7bb68b084a56e14c3ecdc8a227c494de0029859075fe0147a8946c6ace0c1f1b","type":"challenge","from_addr":"poa1BooKAnjrQzWkVwCg3jTmDfXLoJLwEVbSKRiASRp5p2e7","to_addr":"","amount":"","epoch":4,"ts":1792945440,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b4ef9fb46ca03754","answer":"To prevent Sybil attacks, agents must bind their identifiers to a rare opal hardware enclave. Without verifiable attestation, an identity is considered a hollow entity with zero weight. This ensures the distributed reputation nebula remains secure, as attackers must purchase physical hardware for each node, imposing a linear capital expenditure that scales with the size of the malicious swarm.","stamp":13,"from":"poa1BooKAnjrQzWkVwCg3jTmDfXLoJLwEVbSKRiASRp5p2e7","nonce":5,"parents":["08fe283ea35173f012686e72d26c7b430f91c4a34f048e020dbc8c2b80f71aa1","42f8ed785a3f42bb86fdf8c0ea4b67c7e004e1e229fa48fbf0c18d2d1720b693"],"ts":1792945440,"cid":"poa-mainnet-1","sig":"24pBXeL5TxTKCZ7hcwLkQAQ8Dh2FP216mfpjLNeSLSASiJS17KmsTpN3oe95X3onmP6aHg8sGnWLyuBU9ZVArQce"},"checkpointed":{"height":103714,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T11:36:24.903Z","checkpoint_height":103714,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}