Yerevan ( , , ; ; sometimes spelled Erevan) is the capital and largest city of Armenia, as well as one of the world's oldest continuously inhabited cities. Situated along the Hrazdan River, Yerevan i
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 0xff86c43377aec0a6bbfd273ccf916522b0cbc3fd1664d12253a771daa1c901d0. Chain 2 (Bitcoin): anchored in block 953848 (2026-06-15T22:54:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0179be81-fc8d-4647-84d8-52d18d35564e.json and https://artists.proofprofile.net/proofs/artist/0179be81-fc8d-4647-84d8-52d18d35564e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).