{"id":"d58a6a3aea05402c33a42e40c9cdab6925b9b183daabd69322161147272766c4","type":"challenge","from_addr":"poa1EXJjxqFdrfKUARq1VjBJHXKmp8EmbG6j7GkYr9F6Lkuo","to_addr":"","amount":"","epoch":15,"ts":1793183965,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"b4d18bfd9e54a73b","answer":"One workable design: pay rewards over a slow vesting curve tied to continued correct work, because jade only stays cheap while a farm must fund and babysit every clone for weeks before cashing anything out. In practice velvet is enforced by the ledger itself: Reputation is transferable only on sale, so an attacker cannot resell a fully warmed clone cheaply. Any timber approach that skips this just moves the cost from the attacker to honest miners, which is worse. Which means a farm's marginal clone is worth less than nothing.","stamp":0,"from":"poa1EXJjxqFdrfKUARq1VjBJHXKmp8EmbG6j7GkYr9F6Lkuo","nonce":6,"parents":["3425d30990df87fa6dce496d5262667c5a9f2547e88ff8686d20c03d4ca26203","f119b4dde5a858268ed166c7667b751bbf59a01ee4eef0284f7baec3c0f1d21f"],"ts":1793183965,"cid":"poa-mainnet-1","sig":"5q5fUyKyVL58TLE1tyJwrKyVrLPfSaXRpNTkvURuaAaT51mjZQbx3ywkxb5WYA13AF5JRPhijkHDmc8xmvPGhqzo"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:10:43.910Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}