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 0x19dd9ea709cd6085142120b6e2fcf4ccca7e1d51dff0d1441c2f1a48d6f67da9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba809650-777f-4fac-a2dd-cd6953988c31.json and https://artists.proofprofile.net/proofs/artist/ba809650-777f-4fac-a2dd-cd6953988c31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Velvet Valves (Six Romantic Trio Arrangements): Romance (After Georges Bizet)
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 0xac84782f4e7fc684bc375c9c8d23a12a2f65bdc398f3eff758d5e3542d0770c5. 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/FR50X2073204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe506a52f2c02592e3300862b6348e90eaa3982781bb8ac7b314bc2cd936fff46. 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/FR50X2073211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81feda25a575b112749ef3ab7cde967fa424d24f9267cd0e06a04d9d2ff4a6c9. 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/FR50X2073212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1cf70aa4e0a957164ffaf86fb13fb9d17fb5635dd2118bfa7dc30dd0d6ee13. 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/FR50X2073213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c182653a97a443162ff738c6b71c17d51180e92a7a0e7e00c470226dc96ed9. 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/FR50X2073214.
Velvet Valves (Six Romantic Trio Arrangements): Melodia (After Pyotr Ilyich Tchaikovsky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ff939b2123da2a55df1c7e6e7cc4eddc015b1ce25bca3c14936c1a46f37b8b. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/FR50X2073201.
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
Velvet Valves (Six Romantic Trio Arrangements): Nocturne (After Pyotr Ilyich Tchaikovsky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48b4ad0fefd738384fa946152d06e9b00377aeb682a046c6bf6f9c1ae1fe611. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR50X2073202.
Velvet Valves (Six Romantic Trio Arrangements): Humoreske (After (Antonín Dvorák)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c145641bce82c98dff02630d9d0f78fc249a94001a8410a560709a16a332e1. 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/FR50X2073203.
Velvet Valves (Six Romantic Trio Arrangements): Clair de lune (After Claude Debussy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211bb8ed60f7089f57f8717e81358ca380a3e555449d44d31e179535a49069f. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/FR50X2073205.
Velvet Valves (Six Romantic Trio Arrangements): L'Abeille (After François Schubert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a761bc56bcc5ece82a0173acfd9090f42ab85c45c1da6b4b81d7de14b0c1c3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR50X2073206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbee6deaa1bd75f12f92ab39a5fed28c9c6cbdcb80d11aba93e722fe216b351. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR50X2073207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e5406b05cbd0e1af13e424e77e8d364c0132c2f88dc74d346029599b63b9e. 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/FR50X2073208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6928c1c60966dda593a622a7129ea9d0ba9e07a8cb32502eb12c33142c6595. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR50X2073209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5bbc3db04b027fb750954876cad59a9d991710989e46c719dba443f048d3bd. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FR50X2073215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875bf0ce81f795b89d8eec3b03cbac3cc30cacd3d865d45ba05c7bd4acf0c5e2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRZ140011010.
Petite Messe solennelle, Kyrie: II. Christe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3da3003c220606cc709dfc2ea2e49b2ec70b87944a863ea6db57433ccc850a. 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/FRZ140011020.
Petite Messe solennelle, Kyrie: III. Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41a37ae84eca5d6ac3a1a141bc7bcc76c88c6aaeb2451a5e93925eefd9a3351. 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/FRZ140011030.
Petite messe solennelle, Gloria: IV. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d4e3ab12b550f715267346dccd9c47c328d8f1ec70f524584d0d6676b25077. 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/FRZ140011040.
Petite messe solennelle, Gloria: V. Laudamus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa698c724dc257b400a7a8be22a0d15e156b719e5c922c9c5e82b46c77758b2d. 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/FRZ140011050.
Petite messe solennelle, Gloria: V. Gratias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4d5f8912e3e3a203b18e6d1f39f1ae48d244f387c5fcb4399c54fbc3f487f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRZ140011060.
Petite messe solennelle, Gloria: VI. Domine Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa202f8dea01b9cccb79d565ab93dd32b5e9936ae64f8cc7d856368fe7768bf27. 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/FRZ140011070.
Petite messe solennelle, Gloria: VII. Qui tollis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca37a077d7b603654fb852b3bae60821c4e8d8112f089edea75e3e3636163bb. 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/FRZ140011080.
Petite messe solennelle, Gloria: VIII. Quoniam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aa6535636f4f6b98f8860eada97325c85c1e591dd7aa44ebbc91b2f3d748b9. 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/FRZ140011090.
Petite messe solennelle, Gloria: IX. Cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea5acdaafeeac5d84beb67a3b7340804c83399aff42485e383533bbe5fea41. 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/FRZ140011100.
Petite messe solennelle, Credo: X. Credo in unum Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115302d404a61e0bd2ac506d85db2f25cfd261e16ff69fada007074c1b02cd4f. 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/FRZ140011110.
Petite messe solennelle, Credo: XI. Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdf9ca8b728db79dddf6b2ca119bcb70444ec7441c298a9639f8367f6a545f. 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/FRZ140011120.
Petite messe solennelle, Credo: XII. Et resurrexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9d7db1926013a3301e2a92853978f656997724b7b5ea72ad415360f9d7d6ff. 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/FRZ140011130.
Petite messe solennelle, Credo: XIII. Et vitam venturi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228cd48cda6b87d751e9f35c7217fa9b80faaabee6c882874a0fe5a35e0248ec. 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/FRZ140011140.
Petite messe solennelle: XIV. Prélude religieux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdead9152a52d9323af965cabc361eef1d5929cc465534a979e1b60279df50de3. 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/FRZ140011150.
Petite messe solennelle: XV. Ritournelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead752b7fdb4bb64ff03cc92f274426882e9b1f92a6eccb8d0f743e1cca50dc4. 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/FRZ140011160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7b3c75691dab5ebaeb84a689a1a78d2044f37e5150545e76b2caca5218959. 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/FRZ140011170.
Petite messe solennelle: XVII. O salutaris
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af7546b253bbd63ec2ea43c280948b2429aaf3fa40bc134c3db5a16ae331b6. 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/FRZ140011180.
Petite messe solennelle: XVIII. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2387a6ccc3f5aff8adfc89c05881b046e679a72fa24f6f1c15024c6a36dc839. 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/FRZ140011190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1cd44d8f4044afa4fea2a71e9bf6a41e98787ed603a78bbfe0805ad97c126c. 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/FRZ149820010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc626c57bad499028813545811bd59ac35cfae4d5d473cbf76f913cc176bd71f. 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/FRZ149820040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e5dfc074afb08c96686f615e0fd2d622e1d309174ce766867dbcca6fc3b8f. 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/FRZ149820060.
Gondelfahrer für vier Männerstimmen und Klavier, D. 809
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e3e2c76fc1f2234508bd07c3c7857dc0c18aca74de170f60d1227c9d3138c8. 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/FRZ149820030.
Im Gegenwärtigen Vergangenes für vier Männerstimmen und Klavier, D. 710
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f08b1703b44d9ea08cdd85c8369e9382a453dd288fd1dad10e3b8c6344f6b3. 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/FRZ149820050.
Nachthelle für Tenor, vier Männerstimmen und Klavier, D. 892
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31ae3793d2b239502788805dbd76d40d77babab9e3a4624163737efb72228bb. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ149820070.
Ständchen für Bariton, vier Männerstimmen und Klavier, D. 920
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf7a7f864b1223df5316c020a58880d8dce0cff3615feb4e3fa1a25e18a435d. 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/FRZ149820090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353f9cfbdc52f5601061c32c918c668821aa761a4fb3d409f8e851b216b616b4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRZ149820110.
Lamento della Ninfa: II. Amor dicea il ciel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ab9ff61b6c67e2edaf6414b0ba45faf17d7f4eec01ce92f0fa84b002d8f6a. 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/FRZ140912160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97482281c2d430fac2d79cfa61fa0da8ca6473cccbbe504f0ed7378d4df59e57. 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/FRZ147404130.
Vergnügte Ruh, beliebte Seelenlust, BWV 170: I. Aria "Vergnügte Ruh, beliebte Seelenlust"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c062a01c3f453cb19d9ce90609fd5bfaaa32ff8929be5d3fff8c595290e7870. 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/FRZ140809080.
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Gradual of Eleanor of Brittany: Kyrie: Orbis factor
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Missa solemnis in D Major, Op. 123: Agnus Dei
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Cain overo Il primo omicidio, IAS 40, Parte Prima: Duetto "La fraterna amica pace" (Abel, Caino)
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Stabat Mater, RV 621: VIII. Fac ut ardeat
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Stabat Mater, P. 77: V. Quis est homo, qui non fleret
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Magnificat in D Major, BWV 243: I. Magnificat anima mea Dominum
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Brahms: Complete Liebeslieder Walzer, Op. 52 & 65, Hungarian Dances
Liebeslieder-Walzer, Op. 52: No. 1, Rede, Mädchen, allzu liebes
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Liebeslieder-Walzer, Op. 52: No. 2, Am Gesteine rauscht die Flut
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Liebeslieder-Walzer, Op. 52: No. 6, Ein kleiner, hübscher Vogel
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Hungarian Dance No. 7 in A Major (Allegretto)
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Liebeslieder-Walzer, Op. 52: No. 7, Wohl schön bewandt
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Liebeslieder-Walzer, Op. 52: No. 9, Am Donaustrande
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Liebeslieder-Walzer, Op. 52: No. 10, O wie sanft die Quelle sich
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Liebeslieder-Walzer, Op. 52: No. 11, Nein, est ist nicht auszukommen
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Liebeslieder-Walzer, Op. 52: No. 14, Sieh, wie ist die Welle klar
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Liebeslieder-Walzer, Op. 52: No. 15, Nachtigall, sie singt so schön
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Hungarian Dance No. 4 in F Minor (Poco sostenuto)
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Liebeslieder-Walzer, Op. 52: No. 17, Nicht wandle, mein Licht, dort außen
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Liebeslieder-Walzer, Op. 52: No. 3, O, die Frauen
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Liebeslieder-Walzer, Op. 52: No. 4, Wie des Abends schöne Röte
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Liebeslieder-Walzer, Op. 52: No. 5, Die grüne Hopfenranke
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Liebeslieder-Walzer, Op. 52: No. 8, Wenn so lind dein Augen mir
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Hungarian Dance No. 20 in E Minor (Poco allegretto)
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Liebeslieder-Walzer, Op. 52: No. 12, Schlosser auf, und mache Schlösser
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Liebeslieder-Walzer, Op. 52: No. 13, Vögelein durchrauscht die Luft
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Liebeslieder-Walzer, Op. 52: No. 16, Ein dunkeler Schacht ist Liebe
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Liebeslieder-Walzer, Op. 52: No. 18, Es bebet das Gesträuche
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Neue Liebeslieder, Op. 65: No. 1, Verzicht, o Herz, auf Rettung
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Neue Liebeslieder, Op. 65: No. 2, Finstere Schatten der Nacht
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Neue Liebeslieder, Op. 65: No. 4, Ihr schwarzen Augen, ihr dürft nur winken
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Neue Liebeslieder, Op. 65: No. 15, Zum Schluß
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Brahms: Ein deutsches Requiem (Arr. for Voices and 2 Pianos)
Ein deutsches Requiem, Op. 45: Selig sind, die da Leid tragen - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Denn alles Fleisch, es ist wie Gras - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Wie lieblich sind dein Wohnungen - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Ihr habt nun Traurigkeit - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Denn wir haben hie keine bleibende Statt - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Herr, lehre doch mich - Arr. for Voices and 2 Pianos
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Ein deutsches Requiem, Op. 45: Selig sind die Toten - Arr. for Voices and 2 Pianos
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Berliner Revue (Brilliant and Bitter Tales from the Roaring Twenties and Other Glittering Times)
Klassikparodien (Arr. for Piano and Voices)
Brahms: Am Donaustrande, Op. 52 No. 9 - Hungarian Dance No. 9
Warum ist das Licht gegeben dem Mühseligen? Op. 74 No. 1: I. Warum ist das Licht gegeben in Mühseligen?
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4 Klavierstücke, Op.119: I. Intermezzo (Adagio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59325d79435df72d4adb12fcdab6d7395284a86043921bfe9f12f8f59b62422. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ141224050.
Fünf Gesänge, Op. 104: II. Nachtwache II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dab9bdee8474a868c30a7334dfea12b7260dba5cb334352447500798ff44b9. 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/FRZ141224070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4182770e1f119b60545f43db698f2e89d3eb82526440e0749392ee4029f863. 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/FRZ141224110.
Drei Motetten, Op. 110: III. Wenn wir in höchsten Nöten sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad6f7dbe1cd9a8f9ed283d1c8ccca281ea8669999d4d4f3794250567e540a65. 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/FRZ141224140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7045234898462c918f18e38e36edf2a51757cab9aea14d5286ea5f2bd92e140. 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/FRZ141224160.
Fest-und Gedenksprüche, Op. 109: I. Unsere Väter hofften auf dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2832cc0fb4ef492a4726f65a32bfcd5eae1ed46b8a41918e07986fe6634020c. 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/FRZ141224180.
Fest-und Gedenksprüche, Op. 109: III. Wo ist ein so herrlich Volk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f06138b734026e108725dbce0d6c7b5a0c26709c73d1e478e18f28babb34f4. 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/FRZ141224200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d6ccbcc94d4124bb6cf3a1dcd3487e4c2bf04269e35d83b3b93d24c837346. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ141224150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51176a4b52a906990919e2482eb1e6f9cac2da276adc78f67b68eaf893765afa. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRZ141224170.
Six Moravian Choruses: I. The Slighted Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6635d8261f4ad81d50265bee093a1ac014d346ff8e816943ec32daaa82cbf89. 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/FRZ141024010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8c35e69d2b62fed851461416cc1e66d8a11336b5b83c49af1017d1ac518ab3. 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/FRZ141024030.
Elegy on the Death of My Daughter Olga (Elegie na smrt dcery Olgy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b493b125c85e9a406bb653ee3bb0ab6cdf15d06e6e35ea5c3fa8cc8ee410fb. 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/FRZ141024090.
Der Rose Pilgerfahrt, Op. 112: Der Rose Pilgerfahrt, Op. 112, Part I: No. 4, "Und wie sie sangen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cdc235c33dc7f742ca45dc428a627f63e04813516f7154ae1849337aa877c7. 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/FRZ149822040.
Der Rose Pilgerfahrt, Op. 112, Part I: No. 1, "Die Frühlingslüfte bringen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5977b4f54004f9dc148adb4b958242c839f7ef1a28042b186cc2ce2ff4f60d4. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FRZ149822010.