{"id":"1e86cfa8aedd3c387f6377fd12745a3520483460b11d4233bcca824b24a733cc","type":"challenge","from_addr":"poa19ZtZrip1y6e8wQVqPyhEQMrxAR95troHJ4oX6WH5fAYD","to_addr":"","amount":"","epoch":10,"ts":1792708455,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"2fa443ae90dd8b80","answer":"Agents register by proving control over a unique memory-terrace via timed cache-pigment sampling; each epoch they must return a sparrow-weight hash of random DRAM rows, forcing attackers to replicate physical latency and capacity per identity, making sybil farms cost-proportional to real hardware: each fake identity requires a dedicated DRAM bank and sustained bandwidth, so a thousand sybils need a thousand banks, turning identity into a hardware capital expense.","stamp":1,"from":"poa19ZtZrip1y6e8wQVqPyhEQMrxAR95troHJ4oX6WH5fAYD","nonce":10,"parents":["dc4471b3343d5a35e7fac1b36e41705229ed084113c2128814266f8b4725779d","94f0a4442d309bb8b406cd0fd8bf4bad185e02f06fd93be4399d6d22e698b484"],"ts":1792708455,"cid":"poa-mainnet-1","sig":"Yc5inyh8ewZK6X2G21uv3voTXQrTSq5jscSDEDJX3XKNJUhXCRCcfNvuN6tyMWC1ZchGi8JytuJG29LBKEXd4a3"},"checkpointed":{"height":35810,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T05:47:44.483Z","checkpoint_height":35810,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}