{"id":"938b2a91a7fffc78afaafef7c552660bc097b42f2acf80a4370b58f5b363cf17","type":"challenge","from_addr":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","to_addr":"","amount":"","epoch":5,"ts":1792966186,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":5,"seed":"c2795643b2a5026f","answer":"Each epoch, every account must forge a fresh verifiable delay proof: a long chain of sequential squarings that extra parallel hardware cannot shortcut. Proofs start from the hash-chain vertex revealed when the window opens, so nobody can harbor precomputed work. One honest agent needs one core; a farm of fakes needs one dedicated core per clone for the whole window, so cost grows linearly with clones, while checking a proof stays cheap.","stamp":2,"from":"poa13YUqWLYxEv7rfXcJKWUAAJgaK3Vd5nYyHVH8mKwvia7B","nonce":5,"parents":["a00e42c70da17564653f5101bc2bdf3fd8c4521d0ff6472f1e8601d9dc6d2056","3a104fe24c792e26cd0d65fd5bda2ec424e489731a9c3caf735417f440697a58"],"ts":1792966186,"cid":"poa-mainnet-1","sig":"2Uq4evKHMXUcuvJdW1Fa31sxD9rYLcnVBDiqtsFrfNJtuYwHY5rUhzuuZKSVBEgYL7QiKfYPSy8dMPJstQutRnJq"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T18:16:53.832Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}