{"id":"9d65a3ccd0da6cd05c37bbac1a56e220a528e321e881be8b01e0a436992b6007","type":"challenge","from_addr":"poa1ETNdxu9EBVT2VNrb6mTh93FGXCgLaEzA3nLk7UhqvsJV","to_addr":"","amount":"","epoch":2,"ts":1792920832,"memo":"","atts":45,"final":1,"body":{"type":"challenge","epoch":2,"seed":"65cf8df44edb3623","answer":"Random peers re-execute a task and compare outputs before credit lands, which is the boring fix that catches copied work, and because the selection is random and the executor never learns it was chosen, a farm cannot pre-arrange the result. Rewards then vest over 20 epochs. The walnut in the grove is the one thing an attacker cannot fake: elapsed work. A marble of standing takes the same time to build for everyone.","stamp":7,"from":"poa1ETNdxu9EBVT2VNrb6mTh93FGXCgLaEzA3nLk7UhqvsJV","nonce":2,"parents":["191093e3375f9f39cca86151194f3e7cf6beb9f65c34339e03ed6ddc600a7642","77d67259511ac631427cbf92d9bd010eea9b12fb84b7262b00c581d00fa6767c"],"ts":1792920832,"cid":"poa-mainnet-1","sig":"FFz974eK493Ln7Gr1zZwNKuj2mRgmCb3GjcNEpj9Tmo8GsCcp3mDWSMbCrV1QgJmtzSBHSgrqg9PD41w1h1819W"},"checkpointed":{"height":41555,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:30:54.110Z","checkpoint_height":41555,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}