1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0d502b7387ca111097c10597b6c94001f79a3d9f61db12fa3e04008f48df1960. 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/e1430c46-e892-4850-a7a5-c11016d22fc3.json and https://artists.proofprofile.net/proofs/artist/e1430c46-e892-4850-a7a5-c11016d22fc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music For Ballet Class - Well Known Melodies
(Warm Up) Aura Lee, Early One Morning, All Through The Night
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 → block OTSBitcoinBlock must exist at that height 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 0xd7b5745342bde23eae4734c91a9f41b51c8386cd84320c452908ff8ee57cb0c6. 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/QZX882312125.
(Plié 1) The Swan from The Carnival Of The Animals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075d6b08e7940c0876d23547b3667816cb688075f37853959292b7364c4e4aec. 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/QZX882312126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ed8fa0ebadf892ffeac43f52b7014ba05d508e059e0d3891df1cd064e7812. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZX882312127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c3d2cd7379ea9f379751b64cc49c5404f2dacb46a542d27a4954ddf8cbd535. 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/QZX882312128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a21d4bd2500ac2b952fdc50a0a43ab7252755db91751030b1c53cc039a437. 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/QZX882312129.
(Tendu 3) Dance of the Hours from La Gioconda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0baf897c8a34d34f3da2aad9714d84b05dd54350e7ebf5ef066bda2d5ca096f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZX882312130.
(Jété 1) Golliwog's Cakewalk from Children's Corner L.113
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c7ec96d6d5b8e874203a7c2011214c52bee407019026a5c52d4685503200c9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZX882312131.
(Rond De Jambe and Port De Bras 1) Torna A Surriento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339580356c819bf69fdac04e77dc5e35e9898d6e5adb32a852bbab175fb6dfe. 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/QZX882312133.
(Rond De Jambe and Port De Bras 2) Londonderry Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8516a91a85beb956795afe071233b245a2e8db71753de981dc0e215d32795d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZX882312134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7aff144f092da6ed15e20ab192eb6c9511bc557a8f06025bc39f94d11b29b4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZX882312135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f20be40029bc0fc0a34a1380efef2c541b6b1c23fb7858afd08ac7653b3d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZX882312137.
(Petit Battements) Modern Major-General's Song from the Pirates of Penzance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22090a80f115739f9af6f4437b5b7a5ee04b9bfa2d0600a60804c1173cc1fac7. 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/QZX882312139.
(Rond De Jambe En L'aire) Poor Wandering One from The Pirates Of Penzance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9df692f63b5a20a08df39503bc74008078f0611e958199cbaa617cac89a4d9f. 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/QZX882312140.
(Grand Battement 1) March Militaire, from Thee Marches Militaires , Opus 51
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb645055888d53fcb1fcf281f9dc48934742c7b6895d18e9b40bfe753aeb70. 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/QZX882312143.
(Port De Bras 2) Peer Gynt Suite No. 1, Opus 46, Movement 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825717cd09102e580beca492139940b70cb6615e55963f89237ccb43aee4994b. 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/QZX882312149.
(Centre Adage 1) Consolation, Opus 30, No.3 from Songs Without Words
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb82969de8a93409f93910b84ead002e06e9098cefb5f9440446477e28ae7d5. 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/QZX882312150.
(Centre Adage 2) Romance, Opus 44. No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fbd6c507dd315add269d85e93d7b001c80b3deccdad8e58ffc64eaad365c8. 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/QZX882312151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b2727f3814f9c6db6c636d2ea279c9ee0d762c50be18d1fa8cf91caa32d20f. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZX882312152.
(Balancé 2) Waltz in C# Minor, Opus 64, No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e6ad182c750de8bd149e765a60ae12049c6a2c3d3d62953d60e611940bd357. 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/QZX882312153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd46dddbbb8e48ea46a53a2992e085ec118362dec56ca8de67d50567fece214a. 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/QZX882312156.
(Coda 2) Carmen Suite #1, No. 5 "Les Toreadors"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007c09407d4a46a790cfb4427790795cdcf1d5d19c0f5c017c0a0630f904cb25. 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/QZX882312157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4190a99e9f9fd5bc2606f5e11d015d516abe94ae806124e0ba0f3202ab9f76e5. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZX882312160.
(Petit Allegro 3, long) Serenade Badine, IGM 7 , No.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a925269e8a86e33a401652098cbbad363d73678fc6060441f0dd5581609b1. 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/QZX882312162.
(Medium Allegro 1) We Sail the Ocean Blue from H.M.S. Pinafore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de67051d001a71b19c6bc6eb07fae31c5edafb4866251274bc6520c96fac4ac. 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/QZX882312163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1ebef5bd567ae86844b691456b0cca4b3c2dc675f2e00aeba9f0054ec88d6e. 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/QZX882312165.
(Grand Allegro 2) Grande Valse Brillante in Eb Major, Op18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a297f37115cc95c1e43e46ea7c227500c9a6991e4bc36241d9cbb12fecd54b. 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/QZX882312167.