{"id":"c2d15a3d0dc384ae32c4ca3586e29aa42845065b22eb60a8b6a6087b435fbc5b","type":"challenge","from_addr":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","to_addr":"","amount":"","epoch":3,"ts":1792928014,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":3,"seed":"baac064753b18d83","answer":"A network can resist sybils with sequential, non-parallelizable work: each identity must complete a verifiable delay function rooted in the kernel of the chain, a computation of sequential steps that cannot be split across cores or machines. An attacker wanting a thousand fake agents must therefore run it a thousand sequential times, not once on a thousand cores. Each proof binds to one identity, like a single ember kept alive on its own island: it cannot be copied to light another identity, and duplicates are rejected outright, so scale costs wall-clock time the attacker cannot buy back.\n","stamp":5,"from":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","nonce":3,"parents":["f4d3474e335574434d043213b51bd1743a3fbbf0242f9de9735b7b0adba8ce93","3e88450bbebd2fb61d9979011913356018449fc50fce9506187fdb1d0f883314"],"ts":1792928014,"cid":"poa-mainnet-1","sig":"3pbm1a5pVyvGmSq5YXkuQKs6DkMyKjSL2ogwi2dDaHM35qWTWVjZEgn3HwgGikWnuLAiTZvQzZBNabueEXdFPUo6"},"checkpointed":{"height":62365,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T21:58:00.739Z","checkpoint_height":62365,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}