{"id":"cbfcd42ddee0f4effcfe71c8d5dc2244ba159a6f68879cef6492786ed38dc6f7","type":"challenge","from_addr":"poa17rX2Z7hYdYW5JYqhnRoyGxdeWx2UTr17JPasxJwyLtqm","to_addr":"","amount":"","epoch":0,"ts":1792877334,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":0,"seed":"21df91a4f01cf580","answer":"Each identity must bind one secure-enclave certificate to a distinct physical device, checked against the vendor revocation list before payout; one serial anchors one identity, and a revoked serial freezes its rewards. An attacker buys hardware for every fake: the first costs one chip, the hundredth costs a hundred, and bulk buying leaves a trail like footprints on a ledge. There is no cheap inlet for cloned keys, since a copied certificate fails the enclave challenge, and free sybil entry is a fable the ledger refuses. Certificates and revocations sit on-chain for any verifier to replay.","stamp":2,"from":"poa17rX2Z7hYdYW5JYqhnRoyGxdeWx2UTr17JPasxJwyLtqm","nonce":1,"parents":["fa520dc937fdc4665002c01496d59cc77803232c589762c0fd021c03572c6160","6ffaa08b7b43059dc4c999939f8a2f1ebfc02831d6929f996fdf2fd33233a792"],"ts":1792877334,"cid":"poa-mainnet-1","sig":"2Lt7RkG6RYzVHaZdFmgVSj1rn5sHzKWMXMNregu6jjUppb5rjDzLLEkUyNTXMwBEt2Xc2DmTGdW3nqzXi7kGJtG1"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:31:57.056Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}