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 0x914b05391daa75bb370cae4fec52a899620c5850b51a44c73658ea33b59dc602. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ad5dd8a-3a32-4494-8c43-627176624534.json and https://artists.proofprofile.net/proofs/artist/5ad5dd8a-3a32-4494-8c43-627176624534.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Air (The Most Beautiful Baroque Melodies)
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 0x5f32290c73bc47a1e8a074fc49a3adcf1b44ca3270cf32d997f9598f0b3d0025. 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/DES380517205.
Tannhäuser: "Freudig begrüssen wir die edle Halle"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07bda2a6f49616997b0d63c549d987ebc013bdb5485cefc4a7b30f5bbada38f. 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/DES380004525.
Nabucco: Act III - "Va pensiero, sull'ali dorata"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e744627caf89598ec91601855f6c613074a62331df352b36b312f3b293f17. 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/DES380002204.
Solistenvereinigung des Berliner Rundfunks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68113a5fcb3e817e4935a010fdac4abfffae5437a37ad5a798433e83059443b0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DES380013169.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Classical Treasures - Schätze der Klassik
Krönt den Tag mit Festesglanz (Choral music by Georg Friedrich Händel)
Rote Lieder (Die Besten politischen Lieder aus der DDR)
Chor und Musikkorps des Wachregiments "Feliks Dzierzynski" Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a0e7422edd1cddaadf7fd5dc8443f64c596aeab8fcaccd3f6872c9d5406c88. 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/DEC739900754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389681b5baf5516ba73adc92ce10fc1ac605cd901d28f0d2f6828ce676bae058. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEC730701097.
Eisenbahnpionierchor Berlin des Gewerkschaftsensembles "Ernst Moritz Arndt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d53cc0a056a229f9a7a30c6655ca1de02ef93d0678ba3f13bae3ab1d3dd74d5. 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/DEC730300267.
Du hast ja ein Ziel vor den Augen - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e17729869761e9ba1667ee6ad4a6788220b2beb501ccf6f2c2b33b522b5a7e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEC730701099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a40ff6794c0c757ade1c293d65729e981dd78bc5e26f495f315e8226634276. 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/DEC731200087.
Zentraler Pionier- und Jugendchor "Edgar André" Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779524439be989ef07793b75cdccb9e71679b14cddf6b2c565a15fa68c4b473. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEC739600465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80db12491339e9ad7922ae31931506a1ff9b0ceec73888fcd21509a26a29b368. 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/DEC739900751.
Chor und Orchster des Erich-Weinert-Ensembles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8725c28a0ef494b414940de72925ea4f9ae8d5fca4544efeadabbac8f017bb. 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/DEC739600455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fe11115e4fdfaa6cd6f9edc41ee4b3af205d14ea673f68429aa20287d99a80. 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/DEC739600449.
Soldaten sind vorbeimarschiert (Gute Freunde)
Großer Kinderchor des Berliner Rundfunks, kleine Instrumentalgruppe, Leitung: Hans Naumilkat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4672dc48d46e5b3ffba8eb744faff1820cdc6ef848fec344e7b9dd3458fe2d7. 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/DEC739800782.
Rundfunkchor- und Sinfonieorchester Leipzig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d78caf17bdea8ba0e1ef7ef491d12c76f4f1be5af62a34b31d6315122ed71c. 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/DEC739600450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64170108e586957c4f8b9595cb7c3dc84df1ae4ed6a6fc5924a9264c0bb990. 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/DEC730701114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50603151b5181bcabff7c638e6951a171306b12e46b0d4e1b9cc89b57a3bc22a. 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/DEC739600458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998fde3c137bad4d4f3131d5f375e78bd578720dd999542ec708a3f87b35021. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEC730701104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43c8857b7a5772b9e9ec39ccb0f6d258736c777b65136e9e6e888f42ebce96c. 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/DEC730100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acae3b7f70c95a2e02b6b9fd74c5c0ae52d62dd108a4cb3ea4e69a206159833. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEC739600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd50df303cfe6ffcd9f7748f5fa615f9d034d2e2ec94fa2b74090ccf3bb596. 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/DEC739600447.
Ensemble "Klassenbrüder - Waffenbrüder" Karl-Marx-Stadt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5df8bc8a4edeab9bc39096df10ed6d29dbb3765e1c9ff164a09689cfc20329. 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/DEC739600468.
Agitprop-Truppe "Das rote Sprachrohr" Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03175c38534fff7bd8392229108624a0816465fba6f2bec95192fde3201437cd. 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/DEC739900756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b58b9b56061d9efd112f5ad01971df9ba8ec94abf84284b05af24af63b7dd. 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/DEC739900742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c51fba97db9b3a23ea8f9079d3bc1672e5ef4ab0ea18c68fd1f636c7a911c97. 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/DEC730701095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d22e314570ee2f9b1428c6656d6b8b06682ea8d933a13c9a648c8385224d2. 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/DEC739600446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11774a35a39b9c2e845cc631f24f37efe7fdcbce42ac1a27791b9fe4d36c62fa. 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/DEC739900753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f81e44b6c48b66628a6bbe6dc74e3f00cd7db48221f7e82344e2aaa744bbc7a. 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/DEC730100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952d9d73f6328c63c8f42e7df2d791e57d9165012a4536fa47cc67ae3ad7ce1f. 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/DEC730701116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98a79ba6536a9341bf8708a22b4332666912810e666bdf20bc80ed118e0f7b. 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/DEC730701122.
Sabine, Jörn und Lutz vom Oktoberklub Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579ab3f66a8fa2261aaa103134377b718f7bda8634776dc589ac5a04a7d6dcb3. 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/DEC739900752.
Mach doch mal einen Verbesserungsvorschlag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a63752667cbc4d3ab22453459a928f1cbed99e2ede536d9a644102d36b64e. 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/DEC730701118.
Der letzte große Zapfenstreich der NVA (Am 4. Oktober 1989)
Die Deutsche Nationalhymne (Nationalhymne der DDR) - Live
Solistenvereinigung des Deutschlandsenders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdfb6419afd3f19dab53057e617d12539b319e1f3c172323683e3ee46987e8a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEE701303173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99516da92b39bde190b8027e0669e270f2608f2893a989b212b54bfa18ae207. 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/DEE701303179.
Nationalhymne der DDR (Auferstanden aus Ruinen) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3218138c64a90ebb9024c3d6b0cc9e1d7ee21468fcb12c2368f4fd4f5e19368. 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/DEE701303182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf66d60a83359f8d3fa1c9c23e467ad74f202a62dc43951d8d928841a14a80. 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/DEE701303188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8537c53e1d2b99946cf5fc0d0ed3aaeca64d8406b2c88f8b7c0a6ada961c3ac7. 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/DEE701303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b04ed60352c6f49bea069fe7bd23276cf1c7da2db643acd783900510c7f144. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEE701303186.
Die Internationale (Wacht auf, Verdammte dieser Erde) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53535a6f785ca4b419811c722cfa0be3003e4ac64679835e0da4d55fadf98f89. 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/DEE701303187.
Stimmt an die Saiten (Choral music from the Nineteenth century)