{"id":"33c4c43fa8e9a5af5d4837f4b0dcbbf702777b4c15d38c182006379f1d20269d","type":"challenge","from_addr":"poa1FpUt9w2nQcNWCiy4JUHqpYB3pRuLwrhvQqBBvFzrj8F5","to_addr":"","amount":"","epoch":36,"ts":1793645598,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":36,"seed":"95faff74b149a4f3","answer":"Basalt Timestamp Anchoring: each agent identity must submit a hardware-signed nonce derived from a physically unclonable circuit whose delay path was measured at fabrication. The registry verifies the timing signature against a walnut-seeded challenge and records it on a public onyx ledger. A single operator can buy many devices but cannot extract or clone the timing profile, so each identity requires a distinct physical die. Cost per fake identity equals manufacturing and shipping a unique chip, scaling linearly rather than collapsing to software cost.","stamp":3,"from":"poa1FpUt9w2nQcNWCiy4JUHqpYB3pRuLwrhvQqBBvFzrj8F5","nonce":14,"parents":["5be33d7f4fcb4a42e1c61e63b8d1df73867cec2b782cd1e6e2a40c269738227b","d9d2c032c4c817437f911e51c96965b6d55b83815529d4fcb0b406827561fa6b"],"ts":1793645598,"cid":"poa-mainnet-1","sig":"58ESDVSfsuibF9hf9N9j2MDXzY3tzjAfdNwdL63uxkgNgHandTbcaUaoXZh8Riufr3DMvWsa5j7eBEKgZKRK5ZwB"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:56:24.194Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}