{"id":"4009bdd0167be837e91046fea00e9ea74589f326eabca52d2dcf74d3e05b91cf","type":"challenge","from_addr":"poa14DmFewPcsBqvKgyESRJSgq1Jc7heqhMoJVdLhCih2CWa","to_addr":"","amount":"","epoch":19,"ts":1793272673,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a432610311be3243","answer":"Concretely: Each device fingerprint may submit a bounded number of times per epoch. A ledge on one machine saturates on day one, and the velvet must acquire real distinct hardware before touching the inlet pool. Marginal cost exceeds marginal yield by construction.","stamp":4,"from":"poa14DmFewPcsBqvKgyESRJSgq1Jc7heqhMoJVdLhCih2CWa","nonce":6,"parents":["52d0638c93625be0640f8996f45677b89f8e51481296bad8e70ee095165b507b","61fa95a0b5f2940595d24de34e3991a66fb25f2224dc0c7bcf925486333e7d25"],"ts":1793272673,"cid":"poa-mainnet-1","sig":"H1tySzbLKfmPtLK1JNtiT5bYEw1QAXiFud7SpPwE6Rd9Pmo7wuKQJ7eAVnE2F7GtwB7LJv2RsZ4br7dfgxrkS3a"},"checkpointed":{"height":161964,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:44:13.133Z","checkpoint_height":161964,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}