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 0xd3dd56283070cae767da499aa3fe70dcdd86ca47527babd83390ef84ec84e6ba. 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/8a0c3622-2d64-4f4e-82b7-163056db4ac5.json and https://artists.proofprofile.net/proofs/artist/8a0c3622-2d64-4f4e-82b7-163056db4ac5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blue Edition - Beethoven: "Moonlight Sonata" & "Souvenirs"
Green Edition - Telemann: Ouverture-Suite for Flute, TWV 55:a2 & Ouverture-Suite, TWV 55:C6
Beethoven, Brahms, Schubert & Others: Lieder
Blue Edition - Brahms: String Sextet No. 1, Op. 18 & Piano Concerto No. 2, Op. 83
Green Edition - Brahms: Clarinet Sonata No. 2 for Viola and Piano, Op. 120 & Piano Concerto No. 2, Op. 83
Orange Edition - Brahms: 21 Hungarian Dances, WoO 1 & Piano Concerto No. 2, Op. 83
Bartók: The Miraculous Mandarin & Music for Piano
Brahms - Art Edition: Piano Concerto No. 2 & Serenade No. 2
Telemann - Art Edition: Ouverture-Suites, TWV 55:a2 & TWV 55:D6
Orange Edition - Ravel & Debussy: Boléro & La boîte à joujoux
Orange Edition - Debussy & Ravel: Le roi Lear, L. 107 & Tzigane, M. 76
Red Edition - Haydn: "The Miracle" & "Der Kaffeeklatsch"
Blue Edition - Haydn: Six English Psalms, Hob. XXIII. & Oboe Concerto, Hob. VII:C1
Classical Selection - Haydn: Symphony No. 53 "L'impériale"
Los Grandes de la Musica Clasica - Hector Berlioz Vol. 1
Bentzon: Traesnit, Mosaique musicale & Piano Sonata No. 2
Haydn: Horn Concerto No. 2, Oboe Concerto in C Major & Trumpet Concerto in E-Flat Major
Bruch: Violin Concerto No. 1 - Kreisler: Transcriptions for Violin & Orchestra
Bruch, Dvořák, & Goldmark: Violin Concertos - Kreisler: Transcriptions
Violin Recital: Works of Sibelius, Tchaikovsky, Berlioz & Others
Sibelius, Tchaikovsky & Others: Works for Violin & Orchestra
Debussy: La mer, Prélude à l'après-midi d'un faune, Arabesque No. 2 & Clair de lune
Bartók: Sonata for 2 Pianos and Percussion, Rhapsody, BB 36b & Scherzo, BB 35
Mass in B flat major, H. 22/12, "Theresienmesse": Kyrie
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 0x701468441cb8deae82da70be347ab530939cc4f76628d50158be6e2cc36ac6a1. 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/DEE477600243.
Mass in B flat major, H. 22/12, "Theresienmesse": Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecfd40e3deb0ec657ab1931a47eada1ed484f1e234309fbed099ce1da4f5bd9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEE477600244.
Mass in B flat major, H. 22/12, "Theresienmesse": Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886d66739d466a4e91d3bf67ac26201d3b8fa7267ac3a09c54d6e75c2c1e0476. 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/DEE477600247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990fe0c9407aaa2727e29ed11d5d4efa72f7ad3188d6f67737726452b1b3145e. 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/DEE476300178.
Haydn: Harpsichord Concertos (Mono Version)
Bartók: Suites from The Miraculous Mandarin & The Wooden Prince (Mono Version)
Bach: "Coffee Cantata", BWV 211 & Amore traditore, BWV 203 (Mono Version)
Mozart: Concerto pour flûte et harpe, K. 299 & Concerto pour flûte, K. 313 (Mono Version)
Haydn: Concerto pour cor, Hob. VIId:4 & Concerto pour trompette, Hob. VIIe:1 (Stereo Version)
Brahms: Piano Concerto No. 2 (Stereo Version)
Brahms: Piano Concerto No. 2 (Mono Version)
Classical Selection - Handel: Italian Motette & Trio Sonatas
Blue Edition - Brahms: Waldhorn Trio, Op. 40 & Piano Concerto No. 2, Op. 83
Green Edition - Beethoven: Symphony No. 3, Op. 55 & "Rage Over a Lost Penny" Op. 129
Yellow Edition - Beethoven: Grosse Fuge, Op. 133 & Piano Sonata No. 14, Op. 27 No. 2
Yellow Edition - Beethoven: Grosse Fuge, Op. 133 & Piano Concerto No. 3, Op. 37
Orange Edition - Beethoven: String Quartet No. 16, Op. 135 & Piano Sonata No. 14, Op. 27
Orange Edition - Beethoven: Piano Sonata No. 14 "Moonlight" & String Quartet No. 12, Op. 127
Red Edition - Beethoven: Rondo No. 1, Op. 51 & Piano Sonata No. 14, Op. 27 No. 2
Blue Edition - Beethoven: Symphony No. 8 & "Moonlight Sonata"
Blue Edition - Beethoven: Piano Sonata No. 14 & Symphony No. 7
Red Edition - Beethoven: Septet, Op. 20 & Piano Concerto No. 3, Op. 37
Red Edition - Beethoven: Rondo No. 1, Op. 51 & Violin Sonata No. 9, Op. 47
Carmen Concert Fantasy, Op. 25 (After Bizet)
South West German Radio Symphony Orchestra, Baden-Baden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3fe3276b6d6160cd39ffa9f1b045784763983b6650bbe278d3097e237d1650. 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/HKI192513883.