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 0x35db680e90a22f0dd9bb066fe39dabe78fa1066c296c031cdf1dd7cf53c57cac. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c2277e6-6a50-48e8-a294-ee75267e3b24.json and https://artists.proofprofile.net/proofs/artist/4c2277e6-6a50-48e8-a294-ee75267e3b24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gynekologen i Askim (Music from the Original TV Series)
Gangster (Original Motion Picture Soundtrack)
Allt om min buske (Music from the Motion Picture)
Göta Kanal 3 - Kanalkungens hemlighet (Music from the Motion Picture)
Göta Kanal 3 - Kanalkungens hemlighet (Original Motion Picture Soundtrack)
Drottningoffret (Music from the Original TV Series)
Drottningoffret (Original Motion Picture Soundtrack)
Åsa-Nisse - Wälkom to Knohult (Original Motion Picture Soundtrack)
The Island (Music from the Motion Picture)
LasseMajas detektivbyrå – von Broms hemlighet (Original Motion Picture Soundtrack)
Göta kanal 3-Kanalkungens hemlighet (Original Motion Picture Soundtrack)
All About My Bush/Allt om min buske (Complete) (Original Motion Picture Soundtrack)
The Escape/Flugten (Original Motion Picture Soundtrack)
The Heart Of A Lion (Music from the Motion Picture)
LasseMajas detektivbyrå – Von Broms Hemlighet (Music from the Motion Picture)
LasseMajas detektivbyrå – Skuggor över Valleby (Original Motion Picture Soundtrack)
LasseMajas detektivbyrå – Skuggor över Valleby (Music from the Motion Picture)
Gynekologen i Askim (Original Motion Picture Soundtrack)
The Team (Original Motion Picture Soundtrack)
LasseMajas Detektivbyrå – Stella Nostra (Original Motion Picture Soundtrack)
The Team (Music from the Original TV Series)
LasseMajas Detektivbyrå – Stella Nostra (Music from the Motion Picture)
Graven (Original Motion Picture Soundtrack)
Maria Wern (Original Motion Picture Soundtrack)
Graven (Music from the Original TV Series)
Eastern Plays (Music from the Motion Picture)
The Team Reloaded (Music from the Original TV Series)
Maria Wern (Music from the Original TV Series)
The Team Reloaded (Original Motion Picture Soundtrack)
My Life as a Comedian (En komikers uppväxt) (Original Motion Picture Soundtrack)
My Life as a Comedian (Music from the Motion Picture)
The Miracle of the Saragasso Sea (Music from the Motion Picture)
Sutton's Case (Original Motion Picture Soundtrack)
The Japanese Illusion (Original Motion Picture Soundtrack)
The Japanese Illusion (Music from the Motion Picture)