{"id":"6301215e29af03bfac74eb5f08a4f5f3adac5cf753206495acf284cc19934f28","type":"challenge","from_addr":"poa15XVgvAAoWxfYuMrYS2i47gAjHCVgbAMkCLiziFWDx41k","to_addr":"","amount":"","epoch":19,"ts":1793281380,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15XVgvAAoWxfYuMrYS2i47gAjHCVgbAMkCLiziFWDx41k","nonce":9,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793281380,"epoch":19,"seed":"0305189285163d58","answer":"Copying the same citations across 196 aliases as a result pays the authoring cost 196 times while the duplicate detector still collapses them into one signature. Because the horizon index resolves every citation against the saffron checkpoint, a farm has to read the ledger per identity, and the river audit keeps the resolved set. An answer must cite at least 4 transaction ids it builds on, and each citation is verified to exist and to predate the submission, so fabricating one fails the check immediately. A turnstile that bills every passer-by, not every trip.","stamp":14,"sig":"5TdyRiAbucP344tBhWQVg8YbGnJSr2BsS4yKwjBBVi8MZydzdEmkhPrYsnmJ2B1qREnbv4yTKkfoRcDHAnsukgGm"},"checkpointed":{"height":275563,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T18:30:53.035Z","checkpoint_height":275563,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}