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 0x090356fc14a4b25168c2abf796437e587442ba9d8231bd68db682b64997d8f22. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a28bc25-a718-4ec5-bfea-7cb59fb6f041.json and https://artists.proofprofile.net/proofs/artist/2a28bc25-a718-4ec5-bfea-7cb59fb6f041.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Contrasts: From the 1960s back to the 1920s - Vol. 2
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x0562eca46da5d79da4ef65bcad5b48b5fda994edd333767daba82a826bedb84a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631452304.
The Golden Age of Light Music: Grandstand: Production Music Of The 1940s
The Golden Age of Light Music: The Show Goes On
The Golden Age of Light Music: Childhood Memories - Vol. 2
The Golden Age of Light Music: Musical Kaleidoscope - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416eeba248a76a46781cad91cbd820b4f7eb8e2cead903de7244ca5e9c30c9b5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6630754017.
The Golden Age of Light Music: Childhood Memories
The Golden Age of Light Music: Springtime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00b8666e6561e8fd3ba26c28c9614331f1bc154a00a50a539ba7062cecf424e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631451616.
The Golden Age of Light Music: A Return Trip to the Library
The Golden Age of Light Music: A Trip to the Library
The Golden Age of Light Music: Bright Lights
The Golden Age of Light Music: The Composer Conducts - Vol. 2
The Golden Age of Light Music: Buried Treasure
The Golden Age of Light Music: Joyousness - The Music of Haydn Wood
The Golden Age of Light Music: Globetrotting
The Golden Age of Light Music: New Town: Production Music Of The 1950s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070b861baedcb0816025016c2a058deab242b7516f630ce510219fbe7a33c87. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631452402.
The Golden Age of Light Music: Continental Flavour
Leslie Jones And His Orchestra Of London
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82683b4e392c6215c7fb10890251a93048be88303f6a7f74764024f514713bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631157503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e9553a6fc4254adee5bc6c312b2e34134974476588da77913f4bd16b88b8cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631157515.
The Golden Age of Light Music: A Second A-Z of Light Music
The Golden Age of Light Music: Motorway: Production Music of the 1960s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9147201d83c71717dc7a5300dac9566317fbf052a1c5fbb4390188f25e01e6c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631552607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad8560e2fb5510409a06d8f5f187f8af16ec83743184fba5bb9e22f8791d0f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631552617.
The Golden Age of Light Music: War and Peace - Light Music of the 1940s
Heirs & Rebels: Music by Ralph Vaughan Williams & Gustav Holst
The Golden Age of Light Music: Fiddles and Bows
The Golden Age of Light Music: The 1940s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08924070ebe3859236b0d064b18dd7a1f786d09746d428c9cec7de2b58244f07. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6630450206.
The Golden Age of Light Music: Nature's Realm
Softly As In A Morning Sunrise (from 'The New Moon')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45676ccec613902ed76e7c28a46f83ee28c31360b5bc985d87c597fad91b78d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631259412.
Moods - Impressions - Fantasy (Mono Version)
The Golden Age of Light Music: Great British Composers - Vol. 1
The Golden Age of Light Music: From the Vintage Vaults