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 0x722853c96024612162fdf71c8c11810dbf80509f1ebdac89f04932421339a1e0. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7adbde6c-08d3-4b58-b1ea-8705c4835bcc.json and https://artists.proofprofile.net/proofs/artist/7adbde6c-08d3-4b58-b1ea-8705c4835bcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Executive - Clarinet and String Orchestra
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 0xc8b4ea2e4c6969ba86b1c5146a6a84aa10b9d7805221909e5a87f8a9786b3fc2. 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/QZWDE2257764.
Pagina d'Album - Clarinet and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe380322f0ae4f5658da97e682aff9b99e28097a9bc426ccd70449a8e5a870be. 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/USLZJ2335293.
Intermezzo - Clarinet and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81abef2b1b8d75a640dba2938c47de69993beda88a7960b99b76c44240b31e76. 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/GBRKQ2327014.
Tango Étude No. 3 (Arr. for Clarinet and String Orchestra by Michele Mangani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cece74160251cb002aafc56371376b65bab5bfbef4358b20994e324abd0440. 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/QZTV32385199.
Dancing Doll - Clarinet and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432ec32bc209aeaf995ba5a4c2e5ee05d233798dbb818a6cc24530787617845a. 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/QZ5FN2418798.
Tre Danze Latine: I. Contradanza - Clarinet and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ebce69bb8df24f11df27e4d2ff9ab6ecf03d4659d02e03a5c7695fa3b91fa7. 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/QZWDD2445065.
Tre Danze Latine: II. Vals Criollo - Clarinet and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12a88ad1854013d6ab82759259e51c9d511590f3c685bff61b5e6e4ae3f0794. 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/QZWDD2445071.
Tre Danze Latine: III. Chorinho - Clarinet and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697afd7583e5c71350edfece25a14e91865bb72e55fe88e02ab787dcd3505809. 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/QZWDD2445072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b4cdf7361a46fde2e4757d0604796407c2dcd1a1a18a334d3177b9a9ede69. 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/QZWDD2444695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2de8239aa1b4ddd25945565332b4b57ab1254bc44e234a92276690efa22bd1. 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/QZWDD2445049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116affe9bf8176ff142f108d80a71f89850682f77cd6c1ce00fce0b0508e956a. 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/QZWDD2445054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7478e1b548ff1dcf8b2a13f77971df8c9fa000f0fae430dc51597eafe74acb5. 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/QZWDD2481720.
Michael Shapiro's Yiddish Quartet and Piano Quintet
Yiddish Quartet: IV. Andante Ma Con Moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c88db500de46e14c1f6b02fde292681fa7955679f08b472c19bf87244a212b. 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/USHM22482130.
Violin Sonata No. 2: III. Burlesque. Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16df0028bf3b067b965d658aa3fa86d916dd65599a36fad1ec0a1e8696d9307b. 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/HKI192311105.
A Tribute: Music by Wuorinen & J.S. Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdff5e609e78033ff633b97b89300c7805560da0b4fbd5231c016c46d566779. 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/QMAAK2203539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc17f03bf7cc9642c7bfa4d469d9a732fa97d936cb85ab2eec335c131930b2. 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/QMAAK2203541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec767d3398ec8b14213deb15bf7f86270c01dfb323c2cb095d7c33555984b89f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMAAK2203543.
Archangel Concerto for Piano and Orchestra: I. Book One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308536f510b6917acf4a8cd1f3b02b4cc91eabe9bad2a69b66682a4ab5183d89. 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/USHM81916864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ad33cc3c55669fd7dea5b31e17ea6818b1b55747d1851541ed5daf703fe84f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USHM81916871.
Louis Karchin: Dark Mountains / Distant Lights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ebce69bb8df24f11df27e4d2ff9ab6ecf03d4659d02e03a5c7695fa3b91fa7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZWDD2445065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12a88ad1854013d6ab82759259e51c9d511590f3c685bff61b5e6e4ae3f0794. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZWDD2445071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697afd7583e5c71350edfece25a14e91865bb72e55fe88e02ab787dcd3505809. 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/QZWDD2445072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116affe9bf8176ff142f108d80a71f89850682f77cd6c1ce00fce0b0508e956a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZWDD2445054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2de8239aa1b4ddd25945565332b4b57ab1254bc44e234a92276690efa22bd1. 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/QZWDD2445049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b4cdf7361a46fde2e4757d0604796407c2dcd1a1a18a334d3177b9a9ede69. 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/QZWDD2444695.
Brahms: Violin Sonata No. 3 in D Minor, Op. 108
Tangodromo (Clarinet, Bandoneon and Piano)
Michael Shapiro: Second Sonata for Violin and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99b132607ae9ed58ed283edb6783c8b1c1ab675dfa46461755504eb7990f763. 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/DEN961802760.
Allegretto for String Quartet in B, WoO 210
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc558bb1d59ee5b85017c181681213220dde85df89d23c21546f0aa462fd1d340. 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/GBELP0800159.
Primavera - Clarinet, Bandoneon and Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76885d6802e751b8865b7e2955652ba14ee7f9e9451ed1ae2ca94428fb757d7e. 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/QZ5FN2292657.
Tango Étude No. 3 for Clarinet and Orchestra (Arr. Jofre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaae49734c896c389987504acb785c1f5be4ff0a197fc527764f24e551309b5. 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/USLZJ2258564.
Bachianas Brasileiras No. 5: I. Aria (Cantilena) for Clarinet and Cellos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9253f5719914e9ed5f326959220dcbbc012b43d5f001789ee5acc733253b5c61. 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/USLZJ2286081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111488412250c35dd231f6ac4110eff3b5ce8203f0f5f6384e850039f2a3cbf5. 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/GBRKQ2235273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e521738b2b5cc7ebc3bf243d8f593938639a2b59d06f1da944343f7e57f764. 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/GBRKQ2235275.
Smash Hits By the Thai Elephant Orchestra
Ganesha Symphony: I. The Birth of Ganesha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ce0e41c159ed026e0cec322a1c9f4d070d06bae6b4470c63de816a010252f0. 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/USCGJ1576330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08704b2a203583f1f6b1a2b77d31eae5a9f521732e1a337044a3f4cc0f607a. 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/USCGJ1576347.
Images from the Great Siege (Version for Orchestra): IV. Solitary Rider
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff5732c0d153e5362bbbd27aa3fd01e3eff72dd3ec4eba530daa99069283106. 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/HKI192014404.
2 Dialogues with Postscript (Version for Piano & String Orchestra): No. 3, Morning Serenade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50479e2ed32accb8edcfb9c0505d609aef14e3c48e004f379a567c994148d74e. 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/HKI191628903.
24 Preludes, Op. 53: Prelude No. 5 in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9f3eb5df9d95a8e904241f978ca3df445baf6fe6c4967796f50f62a3346a08. 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/HKI191063413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72357bf04035626f9b6eaceb9fca3ae30001b8a54b0a646cadb531ce058946. 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/USAB10811074.
In Black and White: Music for Solo Piano
J.S. Bach, Boulez, Aho & Prokofiev: Flute Sonatas & Solo Works
Lieberson: Viola Concerto & Piano Concerto No. 3