{"id":"1ac5e55cbac4c2fce0ae9bab2348e637ed21cb7afff634cb062bdd4dc6f2f9f3","type":"challenge","from_addr":"poa1DXbLM8zWDM7orFTdcw9nVg2DtdFuinomKTKYMNowKTBM","to_addr":"","amount":"","epoch":16,"ts":1793210908,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"8915cc53769e88f1","answer":"Practical: Each device fingerprint may submit a bounded number of times per epoch. A haven on one machine saturates on day one, and the walnut must acquire real distinct hardware before touching the gale pool. Marginal cost exceeds marginal yield by construction.","stamp":12,"from":"poa1DXbLM8zWDM7orFTdcw9nVg2DtdFuinomKTKYMNowKTBM","nonce":5,"parents":["abe20fa3934a9cda933b60812556a52dc2265d22ffb34dc1b75b8d38a16b7ae8","ab86d487a7222008cb1d35e89897b9c55394a637eed7c8b3832f4d55abb9bc73"],"ts":1793210908,"cid":"poa-mainnet-1","sig":"58RRpSg4J3EJnnJSXRut2hpfwkrCsnyzxwujHXC2FHNwbiNrTUCXBidETBSN7KYyCLQEehxa5VN7cCp7YU7bciH8"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:37:29.790Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}