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 0x17958bced57597bbcea6afa094b0c1936f0a3cc591f64dc541caa6a702e245de. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20391f50-dfa3-40d7-bc6e-d93be65e0fdd.json and https://artists.proofprofile.net/proofs/artist/20391f50-dfa3-40d7-bc6e-d93be65e0fdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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 0xda11d3565df1f575ec4f89d3b2ebb0c7adedbe3de6f5e64ebbad2931bc56d7b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBPS81500440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f6e983fd7296ec3228a4988d600bb5df11ced91ffc57a541f4ea77401502d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS81500442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627264de0f8e5fb394885b67dcdfbf3f8b9145e3bb53acaaf109f164b67a596. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US6R21419985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8fabd17cbe3bf8e6e843d9df426198cd38e0fb92af6aea133d3b27f67d5811. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBPS81518881.
Peer Gynt Suite No. 1, Op. 46: III. Anitra's Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7bc23c0c32876544c4b9de4ca171fcd6c0d1f0262cae863c04a067925550af. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS81500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe17080428e09f804dee53add80ae3d9fee943c0ff883df589e6c8290612f12. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS81400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d505b5c4dde5233aa5dc171fcd712b670af1aaa37adad843f56d95894e9e48a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS81400032.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
Sixteen Waltzes, Op. 39 No. 15 in A-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf61d99f4f13a96b3fdac35c89f06c5c412c5eef28c2d5721d948163d4775b7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS81400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87649adbb7132eaadf2415ff959fcfaa9fe55feda01190c60348d7e57ecf7148. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USV291427155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994cf080d291fc1f9c269382682a2d0e8f4b93394261f8829a95bace4fc4be76. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBPS81513658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a72ce2c4a873c982e0f2b257bdc9066e44c254b587466787263bd39b2fdbc9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS81400007.
Lyric Pieces, Book 5, Op. 54: IV. Notturno
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2 "Moonlight Sonata": I. Adagio sostenuto
The Carnival of the Animals: XIII. The Swan
Solomon, HWV 67: The Arrival of the Queen of Sheba
Le quattro stagioni, Concerto No. 4 in F Minor, Op. 8, RV 297 "Winter": II. Largo
Le quattro stagioni, Concerto No. 1 in E Major, Op. 8, RV 269 "Spring" : III. Allegro pastorale
Variations on an Original Theme for Orchestra, Op. 36 "Enigma": IX. "Nimrod"
Images, Book 2, L. 111: No. 2. Et la lune descend sur le temple qui fût
Liebestraum No. 3 in A-Flat Major, S. 541
Suite bergamasque, L. 75: III. Clair de lune
Scenes from Childhood, Op. 15: VII. Dreaming
Piano Sonata No. 13 in B-Flat Major, K. 333: II. Andante cantabile
L'Arlésienne Suite No. 1: III. Adagietto
Piano Sonata No. 16 in C Major, K. 545: II. Andante
Concerto for Two Violins, Strings and Continuo in D Minor, BWV 1043: II. Largo ma non tanto