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 0xe8e891a194a314e94e2dc7a76166ebfacd198b6617872ecaa8c0f0d15d3a935a. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5071bbc7-bf3f-4566-98ae-5314d5c74693.json and https://artists.proofprofile.net/proofs/artist/5071bbc7-bf3f-4566-98ae-5314d5c74693.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Vespri Siciliani, Act V: "Mercè, Dilette Amiche" (Arr. for Clarinet and Piano by Seunghee Lee)
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 0xe7c6076585aaa6b0886d28146232b8786d3b39b791b20a4c62f6a110babdbb65. 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/USX9P1353372.
Tosca, Act III: "E Lucevan Le Stelle" (Arr. for Clarinet and Piano by Seunghee Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008089aaf385991c3c036ad27d63ee84eb540769b71e8284d0a88ea1f77b4ece. 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/USX9P1353373.
The Tale of Tsar Saltan, Act III: "Flight of the Bumble Bee" (Arr. for Clarinet and Piano by Seunghee Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409d939fab511d1266224a4e9101ae023b85db2214e563dcbb0dd3f996f86204. 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/USX9P1353376.
Adagio for Clarinet and Piano, Op. 23 No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e01199496e83a6d9e268c1a1bfcb7011361e5b2a804d7beada3b12b308b6a4e. 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/USX9P1353378.
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.
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.
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.
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 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/QZTV32385199.
Executive - Clarinet and String Orchestra
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.
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.
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.