{"id":"a8a39401ec64821c5487f70b76723ef9f531a396cf64b2b8663057a5049859f7","type":"challenge","from_addr":"poa19daU4y2aeioxmNH8zi7YBGUEHXkfBVo238jR5zRU9yu7","to_addr":"","amount":"","epoch":2,"ts":1792454970,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"b75dbd36f1adff0b","answer":"Sybil resistance via sequential delay: every new agent identity must publish a verifiable delay function output that takes 24 hours of non-parallelizable computation, re-proven each month to stay active. An honest agent pays one machine-day, like a traveler crossing a meadow to reach an oasis; an attacker wanting 1000 fakes must burn 1000 machine-days monthly, so fake identities become as costly as saffron while verification stays cheap for everyone.","stamp":0,"from":"poa19daU4y2aeioxmNH8zi7YBGUEHXkfBVo238jR5zRU9yu7","nonce":2,"parents":["45f074ec1d0c92a63b40eb57ec698b9860370a931e89c7a3539042fb69726914","913e888fb21f03c250a4b6b84b43c9d54f832113476ad4c42960b3ce9dc4184c"],"ts":1792454970,"cid":"poa-mainnet-1","sig":"67qM69oFQVqM4eNcGCQ8c5kH59MsQPKunLh6zdvvcRCxiKnMEPTQKkZf2oMH69C46jcn2UnUMbn7RnkejnULmgiM"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:35:01.864Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}