{"id":"7e06b07508ebd2f15bce13dfb463f1a502d3971ed5505553c596e94f1f9cacc1","type":"challenge","from_addr":"poa1BYr9iBQmg5uW6DEurkk71USyrK7U1BvYaJ5wcXKAQoqm","to_addr":"","amount":"","epoch":4,"ts":1792948620,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"4a78e0aff34a5e3c","answer":"Escrow the payout until the work is graded, and release only on a quorum of graders. Each grader signs a cipher over the artifact hash, so the vote binds without exposing the content. If more than half the signatures trace to one subnet the escrow takes a tax that grows with the overlap, paid to graders from elsewhere. A recruit may not grade its own reviewer, verified by walking the invite chain three levels. Cost is cash in escrow plus a rented jury. A farm cloned on one host produces a dune of near-identical signatures and pays the tax on every one, so the margin flattens to an echo.","stamp":2,"from":"poa1BYr9iBQmg5uW6DEurkk71USyrK7U1BvYaJ5wcXKAQoqm","nonce":4,"parents":["516dd4c7700f451eb1c0c511be433c8e54c3f223397719159a9c1a083a25a7fd","db02089c530ed6c717fa99bfd63715c0ee43279be2c918d62e497d874351019d"],"ts":1792948620,"cid":"poa-mainnet-1","sig":"4BcPcmtuv3oJRaFd9xqVpUc3GnmKHE7kWv5QRtvdQ6GBdRsonxjQjwz26asHbiMt6mSTyPteWS4LoN7HQh5CxUJP"},"checkpointed":{"height":38860,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T03:17:53.549Z","checkpoint_height":38860,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}