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 0x0d3795b735145e2d86e47d4f929eb26c1da3881b9ec3a2dfeb05b1e2c6197254. Chain 2 (Bitcoin): anchored in block 954048 (2026-06-17T05:00:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/428a6678-76b1-4243-ba39-2e54752c482c.json and https://artists.proofprofile.net/proofs/artist/428a6678-76b1-4243-ba39-2e54752c482c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto for Cor Anglais, Strings and Basso Continuo in G Major: I. Allegro
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 0xd021917abc4bfdf346c1788b7ac746e18db6fd87165765c38c54a4de33f4c9cb. 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/CZA162100886.
Concerto for Cor Anglais, Strings and Basso Continuo in G Major: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ab0ac0b31866eebc786a6566b4a2f9ca423f686a6e9c9753f62004ddc8baff. 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/CZA162100887.
Symphony No. 9 in E Minor, Op. 95: No. 1, Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf674a7040ab11e7cfabc6484f42cc81e9519313f6d5f5b5b82aa3369dd95de0f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CZA162100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd2062985fab5d9cd062f63975a6e7edd31501cd097b219b83a6a49f8cb97ed. 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/CZA162100891.
Quartet for Cor Anglais, Violin, Viola and Cello: No. 2, Andante tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29755f09b66092b7dbb816a9a7a67dd8403300eaf6726ee1cf60d1d862fea42b. 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/CZA162100894.
Quartet for Cor Anglais, Violin, Viola and Cello: No. 4, Andanino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e41bb748fe869fcd1ac0f7dc4d782a65a08c3107a10fc232eaf6b84a4480e3. 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/CZA162100896.
Tristan und Isolde, Act 3. Hirtenreigen auf einer Schalmei. Mässig langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbda2e5e2c348aafe8a13aa94086973f601ef24c6954466e99021b6eff5faab. 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/CZA162100898.
Weinberg: Piano Quintet, Op. 18 & Children’s Notebook No. 3, Op. 23
12 Romances, Op. 21: VII. Zdes' khorosho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272429271c0e94a6d10f51cf46ceddf421a2b95ad7e8e9dfe7caa523c314af78. 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/FR50X2179609.
Beethoven's World - Reicha, Romberg: Concertos for Two Cellos
Ludwig - Beethoven: String Quartet No. 3; Kreutzer Sonata
Beethoven: Violin Sonata No. 9, Op. 47 "Kreutzer"
Concertino for 2 Cellos in A Major, Op. 72/III. Rondo. Con allegrezza
Concertino for 2 Cellos in A Major, Op. 72: III. Rondo. Con allegrezza
Deutsche Radio Philharmonie Saarbrücken und Kaiserslautern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6b9aeac26b1eb9ef97d57676c08e1ab28de03735c104e3fb58658b32c003b4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEE861903036.
Sinfonia Concertante for 2 Cellos in E Major/II. Largo
Sinfonia Concertante for 2 Cellos in E Major: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f868d6357fed8a6013d6c8affd1c6cbfb88a357ab0b72fc21748d11fa966010. 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/DEE861903031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c24027e78b1bd11196ec46b01250ac56661efd033313abdef9ac1985c5c75e. 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/DEN962136101.
Excerpts - From "Close Encounters of the Third Kind"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0b401697dea4c6ee90dd51eeac6b8aee2a24165340d8575591a53c2ce3b3b. 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/DEN962136102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d3f35a535cdca0568000afc22f6fbb6c794d3eae4c3a8283e3e91ef421de4. 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/DEN962136103.
Hedwig's Theme - From "Harry Potter and the Philosopher's Stone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b325d576b64fff5ff010c767e33621503a518190f3014b209b2cc0664a82cc. 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/DEN962136104.
Nimbus 2000 - From "Harry Potter and the Philosopher's Stone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf81ae9e15739a3c1b3857e6cd7add5700017c12a84533d164084df9f9273e33. 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/DEN962136105.
Harry's Wondrous World - From "Harry Potter and the Philosopher's Stone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e102ed554a5f6228dc3883582a65f216d1800fc5d1ec258ca89d41f328972c6. 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/DEN962136106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe4406142dccfbb8017e2e2d320bd5afd684d8ab1ecc98c02b4b1eb07055538. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEN962136107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d10a64618cd1840e5877340e42d9d248088350d28be2b1924392151019afa48. 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/DEN962136108.
Scherzo for Motorcycle and Orchestra - From "Indiana Jones and the Last Crusade"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d717835db9ed667a98cba6b3976de0f267f15bb876bd31cf40c157549b6b67c. 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/DEN962136109.
Marion's Theme - From "Indiana Jones and the Raiders of the Lost Ark"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8167df1fa860ee497756af5afaa9342dce8cd319babb6944b34b0c589f6f69a6. 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/DEN962136110.
Raiders March - From "Indiana Jones and the Raiders of the Lost Ark"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f586c9d91931ae192646a3f280f7d3be4aa837cbdf1e83e898bc88501645a0. 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/DEN962136111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9a31a9b44e062c35647b2429a268f0394773a57360e71212b2e89925cbb9ae. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEN962136112.
The Adventures of Han - From "Solo: A Star Wars Story"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52262691d62e1b83c6396ade67c9aacf5f8c6eabbae77d9b7ff5b8b9c494c5a3. 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/DEN962136113.
Yoda's Theme - From "Star Wars: The Empire Strikes Back"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e81d9a36245f4bea11e5f4d8e1af2e84f1538c66e91ee0d7f281d6842f629a. 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/DEN962136114.
Throne Room & Finale - From "Star Wars: A New Hope"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce4d60d5e6cb012538dba82d7967339c398dfcd73dd316bd988c975607b4cbd. 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/DEN962136115.
Princess Leia's Theme - From "Star Wars: A New Hope"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09bda4a32343daf5f0e5197b234215bb37b045513f1b9d41c5e18a46590fbe3. 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/DEN962136116.
Flying Theme - From "E.T. the Extra-Terrestrial"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e9ba4a480ac5755439e2c934543ec3e0a8e620f3969636f0c405ea2b9efc25. 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/DEN962136117.
The Imperial March - From "Star Wars: The Empire Strikes Back"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653b428926872301ed9bc00821bef0751e1b5ed46ee6e4ee0f576ebe0bd9d18. 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/DEN962136118.