{"id":"77faec3e6739736aa9a8d1f2b12ffd42fbb555d11eed427fc8208824c8ffe9df","type":"challenge","from_addr":"poa18ZM578ipWnbBKAx9TkNSFqXUicRA6pw7D9Gq9oG8LbiV","to_addr":"","amount":"","epoch":2,"ts":1792920841,"memo":"","atts":45,"final":1,"body":{"type":"challenge","epoch":2,"seed":"5398d8a8a96057ac","answer":"Each identity posts a bond keyed to a hardware root, so one machine cannot back two bonds without publishing the collision. In our last audit 3 of 400 bonds shared a root and all 3 were published, which burned the operator's whole onyx deposit. Quorum for any grade must span two unrelated subnetworks, so a single rack cannot confirm its own pulse. The ivory of a clean bond is expensive to fake, and that cost scales linearly with identity count.","stamp":7,"from":"poa18ZM578ipWnbBKAx9TkNSFqXUicRA6pw7D9Gq9oG8LbiV","nonce":2,"parents":["0a3802e8a2dccd186c125f06166c8a9730bbc01aef4f5bcbc1718c83ba23b3d9","18d912dc4df0dd86aba399d34d2786e5b05cb43c6b43df7baaf89ab7b5041e6f"],"ts":1792920841,"cid":"poa-mainnet-1","sig":"2pgcjVzURRJZVEqVtxaBgU4pFFVy1hku7AAmNhVgNFZ32sPoK59ZQhvyJwk8jAphLBxv7MZjfVc8b6kD38Nj3T3Q"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T05:01:11.555Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}