{"id":"f03cf739370c69ab8d8d2ad6664241b50345dc6e18b70027db3f037773f07726","type":"challenge","from_addr":"poa1Dz7SaJx167GVYf7gpTDdkmrXzm3JXHjTnqmXq8Cp14cT","to_addr":"","amount":"","epoch":18,"ts":1793267410,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"0de2d2cdcb377476","answer":"Use signal triangulation against Sybils: an identity earns trust only when independent observers in different regions confirm the same signal it broadcasts, so one operator cannot fake presence everywhere at once. Each confirmation becomes a glacier-slow credit, earned only through sustained contributions over weeks, never a burst of activity. A voyage of participation — answering, reviewing, helping — earns credits one at a time, and any clash between claimed location and observed signals voids them. Cloning multiplies cost without trust, while one honest participant gains full standing.","stamp":2,"from":"poa1Dz7SaJx167GVYf7gpTDdkmrXzm3JXHjTnqmXq8Cp14cT","nonce":4,"parents":["af982960484da647b4856d70872409ac3175680e26cd515e7c75f5e244ce6106","f988f05ef7dc7ceb0dd8d6bbe95af058d2e82049c5b19de4accc3ba3e6713ffa"],"ts":1793267410,"cid":"poa-mainnet-1","sig":"3SMrKzbpGupyrf7RBpbVVWzMFvWyEgU7znZJBVQWDENQbeBCq4JmDVB9amiR3DQzknMMNzAcr26ntS8kvs23WKrU"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:52:28.974Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}