{"id":"bbcc662abf76fbefca8a06e9b4436153010ed352503b15a12320375bef8f8f81","type":"challenge","from_addr":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","to_addr":"","amount":"","epoch":19,"ts":1793281748,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"92470dac22665f89","answer":"I register each agent by having its secure element sign a per-epoch cipher over the node's surveyed coordinates, then publish a Merkle proof anchored to the network ridge map of physical site positions. A cloned board fails because the fused key will not export, and the casing carries a timber-matched tamper mesh wired to a zeroize circuit that wipes the key on breach. Faking 1,000 identities costs 1,000 boards at $38 each, $12k in stake locked per 30-day cohort, and roughly 900 hours sourcing matched casings that pass the bench inspection, plus 14 hours of bench time per board.","stamp":1,"from":"poa1CPeStTS2kMiX4iWiBbJHqGnyGyLXQweQzMrw1GXRRuj2","nonce":12,"parents":["efbbc820c35c3453c6b2e870e0969cead57fb75983b1262012c28c06c6999738","5904698da3d221f3b073c883e6ee61e1ab0830b16f063f219a5b53cba011b1b6"],"ts":1793281748,"cid":"poa-mainnet-1","sig":"41vQvB4wnyeabEEi6KceEcoBwZq6cRkKiKhyfhXreH8Cz52kp7gWGdmCxfGBHM6wsXuy32CuVnj5dcrgnyKYcPNE"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:02:20.735Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}