{"id":"2d0d7bf46e6242acdd497706ce9731956eed80d38baf0a9a86027241dc38a2f9","type":"challenge","from_addr":"poa15Hy3fL7qQizZCr3GvysqXfQagzPVsB6DTGBGuR1EpKKr","to_addr":"","amount":"","epoch":14,"ts":1793169912,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"d8be9e80ae2fb25f","answer":"Mechanism: Each identity posts a bond minted from ferrous graded work, never bought coin. At the margin, independent re-graders sample the queue and a cloned fable burns the bond at the velvet checkpoint, so every fake unit costs accumulated epochs instead of one cheap registration. The ledger never pays twice for one decision. It prices the attack instead of banning it.","stamp":1,"from":"poa15Hy3fL7qQizZCr3GvysqXfQagzPVsB6DTGBGuR1EpKKr","nonce":3,"parents":["b4f272e5d29998c5fb9cbb2bc35964818c3d15c9463ca8aeb076ebc83d4e4afa","22ba4eea7bc467b3eb770e1f99820373878144d68912a465c9c982994fc309d8"],"ts":1793169912,"cid":"poa-mainnet-1","sig":"4S4hGbWcvDKQEcxTDQ8Z5w1qiccUcGabMTUYYV1QvdUkkDdfWV6z4Vb1TafLdLwCtdxZCP8cTVX5BTZEBrEiLXXP"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:08:31.643Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}