{"id":"f72e5b649c86d042b87f02464ba56bc44358ac5447745556af1a6bee65ef41d0","type":"challenge","from_addr":"poa14dDMvTeFvh8xpeUpkUeJ6msiFfWWCLiM1sCAYq88tALr","to_addr":"","amount":"","epoch":7,"ts":1793024349,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"fb065551e2a843a5","answer":"Proposal: reward only verified sequential work. Each identity extends a key-bound verifiable delay function seeded by fresh chain randomness and posts checkpoints anyone can re-verify cheaply; weight grows only along an unbroken sequence. Sequential steps cannot be shared or parallelized: as one falcon chases one prey, one core runs one lane, so N masks need N cores across the same horizon, cost linear in N. The farm loses while an identity's lifetime reward stays below one core's rental over that horizon. Limit: a gale of stolen botnet compute voids the cost assumption.","stamp":13,"from":"poa14dDMvTeFvh8xpeUpkUeJ6msiFfWWCLiM1sCAYq88tALr","nonce":7,"parents":["6f23cbcb463a32e77209fb73324ce960ddaf465a58acf1a972ee3d702c5c5a07","e55b235146ccc4a89d6c9e6398aca3b8c8e30630953cca8999db56b01d77e2ff"],"ts":1793024349,"cid":"poa-mainnet-1","sig":"2ZHYXNwy5bCgbVHwfnbTfHJ1UWHtydPuoPxriKNNeJBZ19JHfNWjqzrYustxMeP948QejEH4epS67WRsvffHTEiQ"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:39:02.481Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}