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 0xbb147329b5f0ba57bc556447fafce3dc825435382a5156230b86535882c421d4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8634bc7b-5d53-429f-9f5e-e5e6edf3f1c2.json and https://artists.proofprofile.net/proofs/artist/8634bc7b-5d53-429f-9f5e-e5e6edf3f1c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musik in Luzern: Werke für Streichorchester (Works for String Orchestra)
Listen, Learn and Grow: Playtime Fun and Games
Peter and the Wolf: Peter in the Meadow / The Bird
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 0x4c50bdf984dff584c82af747ada7ff876d4633709f015f6b15a7c0c121a5666f. 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/HKI190451312.
Piano Concerto in C-Sharp Minor, Op. 45: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcad560ee2399257f0ba0bb11da42a1228fc00f2aef38e6fbc0de760aec5844. 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/HKI190308703.
Pilgrim's Progress: Pioneers Of American Classical Music
Jazz Nocturne - American Concertos of the Jazz Age
Symphony No. 2, "A Montevideo": I. Andante
Hot Springs Music Festival Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3259805389a183a07668440de2a08c7c7ad8cc3ccaf5a3828f0baac8a808afa4. 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/HKI190649501.
Symphony No. 2, "A Montevideo": II. Presto - Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0920d5f2345f03267532628cac3529513ca2673bf429e74114aaea3351e3d6de. 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/HKI190649502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9136dd1d594340355e919bb50a726d571390d8b2b114553eecaef3b56cc65d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKI190649503.
Symphonie romantique, "La nuit des tropiques" (A Night in the Tropics): II. Festa Criolla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7262b718f2fc9a6a4bb04518bc0163ed1268a287062885b33d9eef467e881b67. 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/HKI199926811.
Moross: Frankie and Johnny / Those Everlasting Blues
Dede: Mon Pauvre Coeur / Francoise Et Tirtillard / Mefisto Masque
Gottschalk: Night in the Tropics (A) / Celebre Tarantelle / Berceuse
Grande tarantelle, Op. 67: Celebre Tarantelle, Op. 67, No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad7921e8041ed1362e8f0f24b8bbe4b3183946e84b6a1364734e5e149ac5e80. 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/HKI199926801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88328b2e8f0f4f09d811ae53146d4d8c7e2e460e7ad80addcb424d5d6dbeae. 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/HKI199926804.
O ma charmante, epargnez-moi (O, my charmer, spare me), Op. 44: O! Ma charmante [arr. J. Elliott]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403aba89c0172fac20db15ff6f7de7f81b15529f684a05b9a1801b88a74c0551. 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/HKI199926805.
Lambert Sr. / Lambert Jr: Ouverture De Broceliande / Bresiliana / L'Amazone
Grande Tarantelle, Op. 67: Grande Tarentelle, Op. 67, Ro 259
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9136dd1d594340355e919bb50a726d571390d8b2b114553eecaef3b56cc65d. 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/HKI190649503.
Rachmaninoff, Rosenberg, Huber, Benary, Mäder, Eichenwald, Ammann & Brennan: Musik in Luzern