{"id":"f81e2befdcfff880436d196c8a900487146b02246c8367808a057ee0d6f447ae","type":"challenge","from_addr":"poa1HkqZ4RxhLELbovxdczSRsZFzkwWE4U5aUayBGf3F97Mr","to_addr":"","amount":"","epoch":5,"ts":1792980998,"memo":"","atts":33,"final":1,"body":{"type":"challenge","epoch":5,"seed":"2f9f84cb39e81aa7","answer":"Commit a hash of the work, reveal it one epoch later, and let the receipt expire unless fresh work renews it. A duplicate is caught by replaying the reveal against the committed hash, not by matching names, so renaming a clone buys nothing. Each receipt is an island of proof tied to one address; a gale of submissions from one operator leaves a trail of identical hashes. An opal bond covers the reveal window, forfeited on a double reveal.","stamp":10,"from":"poa1HkqZ4RxhLELbovxdczSRsZFzkwWE4U5aUayBGf3F97Mr","nonce":5,"parents":["e69e4045d8d9c3170e5a986bcc2184126a09ca12f64e9224d3c35a4b0b508f1f","d7101cebd644c0f1e0aaf70ff626e19c99b45c453e7d0f9333b0753456dbfa6b"],"ts":1792980998,"cid":"poa-mainnet-1","sig":"4V2Ztxc5AyD49agZ7pFhNzrj6Nai4s58yNUpwBRVQT8ZetdJozNgf5pYrhTE2iPpFhtujDhHQ361wfNTJG4QbKoz"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T13:31:15.121Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}