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 0x1a83adb920ad0eff4f0e57f7bee80049d33f8881fc27136beea16ef0150e0816. 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/930e216a-f297-414f-acaf-c42ed91838d0.json and https://artists.proofprofile.net/proofs/artist/930e216a-f297-414f-acaf-c42ed91838d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prokofiev: Concerto for Violoncello and Orchestra in E Minor, Op. 125 (Digitally Remastered)
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 0x56c94360a42eee5dd3535e9ae9efb397eb7c10e233953530ae512f43638805da. 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/ES5021702689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f7150f2e64cf455a2ab44e18610245ad5ea3ff5b7f54d6458757e5837b2a6d. 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/ES5021702697.
Danza del Fuego (From "Benamor") - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fdbb506bd58e165f7acee7c21a13794f9fa8e41a5295abb58b08efd9e7a1a4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5021702690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d8c21778bda762e1cf9a79f3a6c02304156208fdadbab69e7457af16b0d62d. 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/ES5021702691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af8e907547747fe4565ad0c430482ba3d1ef1edd85a714530e89c5d7251870. 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/ES5021702699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675c3ba49d50822e02e2b93792806b608c95c304ce1562dfdbd744f8a6cf40b8. 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/ES5021702692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b2791b9f4e2ca12107fb85f633519cc7e1f5d1ecdeeab31e4fa153302cd9ad. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5021702700.
Aria (From "Suite No. 3") - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25893cbf34e5ec730a7d764b107b475727c52335566969d6ce3a9f6eb426b3c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5021702701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d7f5a3fa652f16e75bb226837f07f2bb635e0039edcf66beab9af856d9581b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5021702702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7279198b081eb4050463b1cbab2c6324a15a997b660f3ebdc9ecdf20acab01. 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/ES5021702695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56adf44131019c590e9bc527eb0d7ed031edda3fd55745740b46010f904176d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5021702703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e00d041d2b42fb02358f2b75ed599701ba0b4114b0b8b9cf7c1057005ac9806. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5021702696.
Mozart: The last fragments of the divine
Holberg Suite, Op. 40: I. Praludium (Allegro Vivace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9925de65feda55e976fb00b1a6e70f7ada6759c0567986acc0cdcc0c8db4ea. 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/USSJ10805462.
Holberg Suite, Op. 40: III. Gavotte (Allegretto) - Musette (poco Più Mosso) - Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dccb46ffbb8968dc478bb1206c039b020572834889254b438ff669a681f053. 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/USSJ10805464.
Holberg Suite, Op. 40: V. Rigaudon (Allegro Con Brio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978a8328d8bd6d6722a173efd89170b78de0c1461a1c506fc585b5582f32367. 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/USSJ10805466.
Scriabin: Symphony No. 3 in C Minor, Op. 43 (Digitally Remastered)
Tchaikovsky: Symphony No. 6 in B Minor, Op. 74 "Pathetique" (Digitally Remastered)
Tchaikovsky: Symphony No. 1 in G Minor, Op. 13 "Winter Daydreams" (Digitally Remastered)
Tchaikovsky: Manfred Symphony in B Minor, Op. 58 (Digitally Remastered)
Tchaikovsky: Cherevichki (Digitally Remastered)
Stravinsky: Petruschka, Ballet Burlesque in Four Scenes (Digitally Remastered)
Schumann: Symphony No. 2 in C Major, Op. 61 (Digitally Remastered)
Rachmaninoff: Symphony No. 3 in A Minor, Op. 44 (Digitally Remastered)
Rachmaninoff: Symphony No. 2 in E Minor, Op. 27 (Digitally Remastered)
Rachmaninoff: Concerto for Piano and Orchestra No. 3 in D Minor, Op. 30 (Digitally Remastered)
Prokofiev: Symphony No. 5 in B-Flat Major, Op. 100 (Digitally Remastered)
Prokofiev: Symphony No. 2 in D Minor, Op. 40 (Digitally Remastered)
Prokofiev: Cinderella, Op. 87, Act III (Digitally Remastered)
Prokofiev: Cinderella, Op. 87, Act II (Digitally Remastered)
Prokofiev: Cinderella, Op. 87, Act I (Digitally Remastered)
Prokofiev: Chout, Symphonic Suite, Op. 21bis (Digitally Remastered)
Mozart: Sinfonia Concertante for Four Winds in E-Flat Major, K. 297b (Digitally Remastered)
Myaskovsky: Symphony No. 26 in C Major, Op. 79 (Digitally Remastered)
Myaskovsky: Symphony No. 15 in D Minor, Op. 38 (Digitally Remastered)
Milhaud: Suite provençale, Op. 152 (Digitally Remastered)
Mendelssohn: Symphony No. 1 in C Minor, Op. 11 (Digitally Remastered)
Strauss: Ein Heldenleben (A Hero's Life), Op. 40 (Digitally Remastered)
Strauss: Concerto for Violin and Orchestra in D Minor, Op. 8 (Digitally Remastered)
Sibelius: Concerto for Violin and Orchestra in D Minor, Op. 47 (Digitally Remastered)
100 Most Relaxing Classical Music In The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28582d0f378dd7ecb31c1686bbc45398923e74eb1e3f82767f27abab3a11f3e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:31:40Z), 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/USSJ10813866.
Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16f3e87bb8a1abee9380c4466ecf937387e9800fc35483df5fc89e979fb0478. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:47:54Z), 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/USSJ10813891.