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 0xc48a786d689133f35b4c00ad31a0ea2d6a63e1a2ca4676ed9e5866f5d6d0d1f9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8e5c74d-0f6d-4c96-9e88-5d384b064c28.json and https://artists.proofprofile.net/proofs/artist/e8e5c74d-0f6d-4c96-9e88-5d384b064c28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clair de Lune - Orchestral Favourites; Waldteufel - Waltzes
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735d9c58e5eafc9bfeb05a9b8a7d924b002943ccb6e987dabb76c0f1be08902. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF075910190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d57d8ee40f534b5db10b73ad0d9e9959ad6f7209d57ef0068f396755a45d51c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBF075813680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e31c6f8e2b5b573da72ef893db7d738a9991b9ad6136290534a4506abe3302. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF075910230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce2d42a8e475c291a00de5c4f043fea8bebb0a99180cfc568f5a1ca9d7c82a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF075910890.
String Quartet No. 1 in D, Op. 11 - orchestral version: 2. Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04e61df7c69b73b9f679f0aa36c476d416d41438371b95804c07a8775da20a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF075813710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d027db77c63bdb25b501626f79050feaa17550f716adfd53e17cb427ceeebb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBF075813730.
La Vierge / Scene 4: The Assumption: Le dernier sommeil de la Vièrge (The Last Sleep of the Virgin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2dfdcc524497d170d006f7f3892e64038c82ce33d23ec8c2a4276088ef76b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF075910900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539d22f8864d9d7dfd9745293b3e67b12d509c78a5def1983d25dd9a879bab3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF075711760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e9d72c8ac829c5f22001f6d417c5746f31d6e10230c287189b2c925d30a0ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF075711710.
Suite bergamasque, L.75 - Orch. Henri Pierre Edouard Mouton: Clair de lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07597acfb3e6380ea110d1302b7a0a90568d417828eb7d6322bb268a5bf32acb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBF075813700.
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
Wachet auf, ruft uns die Stimme, BWV 645 ('Sleepers, awake')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423cfef5b9f517b23415ae1a1dfd7caf8224aea7e4201f7ade048a70d29ed43b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBF075910910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980fbfa79e1ebf44fd9869abfe429de392ecab6958e1d9c62dad93d92c905ff9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBF075711740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f71a959a1c27598e5833eb12d1f78b344af9947e5be295f365d43ce4e43666. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBF075712190.
History Records - Classical Edition 108 - Great Voices - Mario del Monaco (Original Recordings - Remastered)
J. Strauss II: Waltzes (Remastered 2024)
An der schönen blauen Donau, Waltz, Op. 314 - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adce6ab4d8574d965c3ffe90cb81c0ddcae93a216cf00da3bb22589a9052966. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBA4950273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57837bd1a81021b8ef7300ad3a30854ed7c7ed3c9d49a81d22eafd9a3fb8b25d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBA4950274.
Tritsch-Tratsch-Polka, Op. 214 - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed951878ca06efd427775e9e27f058d2dc3703961280fe9265b9f1567b6e57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF075010790.
Piefke und Pufke Polka, Op. 235 - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26bf708dd4fc932a6fd09158ade7d1d2e9575bb0b420282651f205677cbb78b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF075010800.
Accelerationen Walzer, Op. 234 - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267807c03865de6ac21d8253ab9082da0ce63b947e79d819debddbca90b9d402. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBBBA4950271.
Rosen aus dem Süden, Op. 388 - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc31072aceebbd0fb0d5034696ce500aa4c7f9f5d61b91d2383511ea87ae19. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBBA4950272.
Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18
Beethoven: Violin Concerto; Tchaikovsky: Violin Concerto (Ruggiero Ricci: Complete Decca Recordings, Vol. 1)
Milestones of a Legend: Jascha Heifetz, Vol. 4
Songs of Hope And Inspiration : Great Music For Orchestra And Chorus
Jascha Heifetz Plays Bruch, Vieuxtemps & Tchaikovsky
Dvořák: Symphony No. 9 in E Minor, Op. 95, "From the New World"
"Witches' Brew" & Gounod: Faust (Ballet Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647cff85162986fe661b2b87c913e970000f224e426a44c148d3b8708d43a5e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX761219101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c8f2399f46f35064c9d55b0b68ff144b7ae9e8b9459e72c055e48312c1bf15. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USX761219115.
Film & Stage Greats 2 - Orchestral Favourites
Britten: Serenade for Tenor, Horn & Strings, Winter Words, Seven Sonnets of Michelangelo
Krips conducts Beethoven, Mozart, Schubert and Schumann
Wolfgang Amadeus Mozart, Symphony No. 39 In E Flat, K. 543
Ludwig van Beethoven, Symphony No. 7 In A, Op. 92
Sullivan, Gardiner, Granger, Vaughan Williams & Delius: Collins Conducts British Music
Mozart: Serenade No.4; Serenade No.9 - "Posthorn"
Gilbert & Sullivan: The Mikado; Trial By Jury
The Mikado / Act 1: 18. For He's Going To Marry Yum-Yum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50984dbe750bcde0b785fdb23922d901142f92baa9f89559da4675bd4cf0a4c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF075742419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b7c6deee4026462123bb5266f56acc937c561f671352fb5b0477f435fb8e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF077443103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f060d147045f4c603bf4f9efc6c3459acb11b8b6b6eb37d04bfe122cfe732e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF077443106.
Trial by Jury: May It Please You My Lud!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25871f3c75224e6ff5dfbad49013d8789b9eb4cdcf165c8efe1a86d058f59a83. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF077443108.
Trial by Jury: Oh, Gentlemen Listen I Pray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b26c8c2edded5885be32d9a597168f3f5a290464b2e8cf0389f7f1a8eff120a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBF077443110.
Trial by Jury: That Seems A Reasonable Proposition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39da118423d7f99260cefed59e71f7e83948c1db4b4623deea162cd980f05966. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF077443111.
Mendelssohn: Violin Concerto; Tchaikovsky: Violin Concerto
Masterpieces Presents Frédéric Chopin: Piano Concerto No. 1 in E Minor, Op. 11
Finest Recordings - Rossini's Greatest Overtures
Piano Concerto No. 1 in E Minor, Op. 11: Romance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4aaf95a7e33b7b840bb47a236b9030baa6d189f94e84bcceb8cb20c677eb35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USBC10500555.
Piano Concerto No. 1 in E Minor, Op. 11: Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91603d385f4d0cfbe3cc757528d69157e248eae1762f371d331b3b856db347e0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USBC10500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2dfdcc524497d170d006f7f3892e64038c82ce33d23ec8c2a4276088ef76b1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF075910900.
Total Inner Peace: Classical Music for Hard Times
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cb2b441444818d4c417f1509e689c700e0cffbe5e18d0e4d42b8cf3b030feb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USRDG0226301.
The Pirates of Penzance or The Slave of Duty - Version without dialogue: Overture
Gilbert & Sullivan: The Pirates Of Penzance; Cox And Box
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f4b761e959c436a13aa51dd14c89928094bb103d51f2314433deb8e057c2e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF075742501.
Giuseppe di Stefano - The Decca Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b3bff481d23077a3126cd56260156cd927dc6ee51843db0274dd6fde5942d1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBF076410406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489f7211e34fd700eea8471ecd709fad52c37c20dd94c856323840fe5c190bf. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBF076311532.