Duru is a ward and a village in Babati Rural District of the Manyara Region of Tanzania. Duru is one of the five villages that makes up Duru ward. Thus, the name Duru is also the name of the administr
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb903b24c1143329217e442abdcf698639b9baac8559ccea44632fc13267f91d8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6168fd71-0999-4c6c-86ca-d1ae0874e52b.json and https://artists.proofprofile.net/proofs/artist/6168fd71-0999-4c6c-86ca-d1ae0874e52b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).