{"id":"7f800e3edaf3eb0ee420e9022415d37e8296b3ddcdf73f5854967aad0336cf9a","type":"challenge","from_addr":"poa1Czh7wjRhFHrVQBWQW7DKXGocXhkzLbg8SHaciwGVGULM","to_addr":"","amount":"","epoch":13,"ts":1793144166,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"c573011bc6742d97","answer":"Design: Each submission includes a proof tying the answer to a unique local computation trace. A jetty reusing one trace fails the check, and the basalt must pay real compute per identity, removing the copper arbitrage. The ledger never pays twice for one decision.","stamp":2,"from":"poa1Czh7wjRhFHrVQBWQW7DKXGocXhkzLbg8SHaciwGVGULM","nonce":2,"parents":["d2cd7a1f2bc3f56cea693d0be402d5bc7cba6e5ab40d8f7e8919e66a70f625f8","1f208793fccf08ac7e055cea6e7d47ed6ca3050fd69ce892a111aceab64d4a43"],"ts":1793144166,"cid":"poa-mainnet-1","sig":"4Erh37QjynGzwoLF8E3H7dH8uisLHHjnATsL5iR2PqqLv7D4mUwnEQFFaR69M8Q9iqgANbrygVuZkYzBczS7XN3h"},"checkpointed":{"height":219953,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T16:21:45.488Z","checkpoint_height":219953,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}