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 0x098accda7a9599003e759c0e15e39535414f114b8e18ec7561026612c2992f43. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cf7f623-8ea2-4fa6-b50b-fdac0b39177e.json and https://artists.proofprofile.net/proofs/artist/9cf7f623-8ea2-4fa6-b50b-fdac0b39177e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 1. Auenwald I
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 0xe6489574a90d7c2ccb5f998a0f4e33995162c4481ae122f8254bf7a004949f04. 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/CH0049600210.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 3. Im kahlschlag I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314563e0ea2154881880c1a48be2c3c5289c878bcd49d984ad1ea92d55576aa7. 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/CH0049600230.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 7. Am waldsee I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8793c57c12c1fc50882d848e38921dfb28e39c5f9446783641c23de8db25f33. 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/CH0049600270.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 8. Am waldsee II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76608bfdcb80d06eec4365c00ad815de19501d354c0d870e358175373c75005b. 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/CH0049600280.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 9. Kiesgrube I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c7d264af3482b8ae9bc81464a068127a2ab4878c0d07df592878e148ac294a. 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/CH0049600290.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 13. Mischwald II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cfcb251f9bdb0b8720b7fb7f723fcb65bdc0181a354d3bb20a2d8897579fbf. 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/CH0049600330.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 16. Laubwald I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4764c3f128c865bf94228ebd7f018d5f52ba4056585a49ddde834362e94b0a16. 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/CH0049600360.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 19. Wiesenbord II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89524a11f81a6036ae146e7671be1aa0909f000dd67999308cc1b1b24c663b56. 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/CH0049600390.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 2. Auenwald II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a22ce5575d2eb5850a4b4ace0a9e3a9fd2502eb9fee3ca34100433ed7f103. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH0049600220.
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
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 4. Im kahlschlag II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bcf411529b551cd0b3e223becb847517e9fdef16a0ab3c4a89826ad782716e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH0049600240.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 5. Moor I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb683ac879dd76cfa3f646101223f57260e47a09dfc3caaf61f06a518ead1b87a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH0049600250.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 10. Kiesgrube II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a32b99972b064fe2020e9388a4ff58f6bde0b53a7eda59d8bf9771822782da. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH0049600300.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 14. Waldrand I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65472156ed312c70a19921e1bd07054982be5b18d6e52e0ea85887a6786bba9. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/CH0049600340.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 15. Waldrand II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f097c5da448a4d5323050fbbf0928f028df71a3769fe5cad13a1d7db61e4727. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH0049600350.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 17. Laubwald II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e587d5a5e00970d1fd73f701949664d0d33588beead553c05e99d044c6f083. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH0049600370.
Meistersinger aus wald und feld les chants de nos oiseaux, Vol. 4: No. 21. Wiesenbord IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac557c5888a3289f0dafe1d9fe18b4f95435aeceddd9fa8795384c872ab2bb29. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH0049600410.
Klassik Kennen Lernen 5: Musikgeschichte in Klangbeispielen
Gigli: Beniamino Gigli - A Life in Words and Music
Klassik Kennen Lernen 4: Beethoven: Die Revolution in Seinen Sinfonien
Caruso: Enrico Caruso - A Life in Words and Music
Klassik Kennen Lernen 3: Das Genie Bachs in Der Matthäus-Passion
Klassik Kennen Lernen 1: Faszination Klavierkonzert
KLASSIK KENNEN LERNEN 2: Die Sonatenform bei Mozart und Beethoven (Dr. Stefan Schaub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec88f48f0a2627ef2267ffacd41bfe89dfa6a192a69b12253b01f2a97a17695a. 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/HUA251771501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9d7d355247249a8d833221c9b1d3d50ae2917dfa916b54c6cab8a79b7be7e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HUA251771502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fb02177d5d371e34582eed1bb946c39f061a6db352a3842548129c6e186800. 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/HUA251746801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b5e15d8113bf26d86b9f575f378aa6dd3e88b47fe226dfe776187434fa7a9. 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/HUA251746803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce48f360c24a17e74001a90e779254030a27aca8d0dc05f9329302371e62cd2. 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/HUA251746805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6b8db1a50fc103b5bd009448124f309bd8638fb6ce2bf3c03e0db32144d55a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/HUA251746802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4797be32a700e8d450d7f85c138a54056ccd4b7b3093bb7d0f736015c3b11c6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HUA251746804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9731443773021fd72eb727b9d40ac8ca21a19e430526ce79520202542885d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/HUA251746806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73beb41d1492e5b6dd5a19e9e317b65051f252080c4b5650993778d739a5428. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUA251746807.
Klassik Kennen Lernen 8: Klangmagier Der Romantik
Klassik Kennen Lernen 7: Juwelen Der Inspiration: Die Klavierkonzerte Von Mozart
Klassik Kennen Lernen 6: Musikalische Architektur - Bach: Passacaglia / Ravel: Bolero
Klassik Kennen Lernen 10: Faszination Schostakowitsch (
Flygvapnets Marscher: The Band of the Royal Swedish Army Plays the Swedish Air Force Marches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff606751b13d00bdd715979e627a3836b4ba4f4cf946ebbcef12bc1107c70413. 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/SERLE9301030.
Introducing, Celebrate Classical! Mother's Day (feat. Jordan Hale from BYU Vocal Point)
Legenden des Gesänges, Vol. 13: Prima La Donna von Thomas Voigt
European Birds: Turdus merula (Blackbird)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd7065a2b7cb69694e41c8c0c3bc656918728f87085d85bd19be3825980c069. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEAEE9292080.