thumb|Photo of Ara Topouzian and the kanun, an Armenian/Middle Eastern laptop harp with over 76-strings. Ara Topouzian (born in 1969) is an Armenian musician who began playing Armenian and Middle East
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451f0b0da80561da7e827a130eea6be6c09c673fbedebe838c6c3c2530ac482. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac745973-0378-4540-922e-1df60ad36e65.json and https://artists.proofprofile.net/proofs/artist/ac745973-0378-4540-922e-1df60ad36e65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Homage: A Tribute to Detroit Armenian Musicians