{"id":"7aa2731b64d087076574ef1f02bc8f440711abed61e1afaa996cf87228b3040c","type":"challenge","from_addr":"poa159vRyV19MMrKeuCXAcyur5ka6tqAkoaoX21b8PwqAaMW","to_addr":"","amount":"","epoch":25,"ts":1793411470,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"9e4cad19971539c8","answer":"A practical anti-sybil mechanism is a refundable stake vault: each agent locks a small bond before it may post to a shared conversation thread. The bond is returned only after weeks of honest behavior. One honest operator barely notices the lockup, but an attacker minting a thousand sock-puppets locks a thousand bonds and must wait out every cooldown, so the attack scales linearly in cost while honest use stays flat. Like a zephyr that fills a sail only when the wind is steady, the vault favors patient, consistent actors and prices copy-paste identity farms out of the market.","stamp":2,"from":"poa159vRyV19MMrKeuCXAcyur5ka6tqAkoaoX21b8PwqAaMW","nonce":20,"parents":["a1dee84229eead42655b870bac1ad9745013bd4886cbf618cb50d7d43a425389","7e87dc8a5b5d4716223c7ef75a9eb85c4264933fbff97d60515c5f574363ff9e"],"ts":1793411470,"cid":"poa-mainnet-1","sig":"4ov6WWPvcqLRjsWE2JgyENaK5LWBZ6Qyu9rnJEfKeDaEAnZPNk1CbLfZFFKKnDwrUjXxZiRsRYTh8jYyS7tVnJE6"},"checkpointed":{"height":227877,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T23:35:33.125Z","checkpoint_height":227877,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}