Juan Leovigildo Brouwer Mezquida (born March 1, 1939) is a Cuban composer, conductor, and classical guitarist. He is a Member of Honour of the International Music Council. Early years Brouwer was bor
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d64191602f814028d390f8f2211b1559275f28b469fbc5a316b0401edf86f9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce41eb41-0ec2-43c2-b691-2fc9b8b256ac.json and https://artists.proofprofile.net/proofs/artist/ce41eb41-0ec2-43c2-b691-2fc9b8b256ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zzz - Classical Dream. Music for Deep Sleep
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c0a5bfa6a1c5f24aea4803308b8c333d1f20f2e99097aaa247bfcc9985d7bc. 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/GBAYC9005434.
Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd762500519bb16b32c6e4148e0df021d74a772815f4475d3ae0a648a7d28e8. 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/GBAYC0501759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9275345e69ac931bc707398b8ae29effb27d69d7da021c3e623dc23461e4afdf. 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/GBAYC0002318.
Brahms: 5 Lieder, Op. 49: No. 4, Wiegenlied (Arr. Mørk for Piano & Cello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7c6fccaa9b5ad808292b534abae03c907c1949e7942bfa82c78e4f8fb07afd. 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/GBAYC8805843.
Mozart: Eine kleine Nachtmusik, K. 525: III. Menuetto. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86153f3ff695249fac00ea78c347764905501675ce3bba5935d85d21324545cf. 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/GBAYC9302702.
Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ba6bda7944a0174cc5b2cc45fa9aad3bc65765c6806aa89bee23acc32822bc. 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/GBAYC0501757.
Traditional: El noi de la mare (Arr. Llobet for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a0f0d8abbe7988f38900d01d8bd8fb23b6f0a85e8dd70b0e518dc4e730cc3. 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/GBAYC1902539.
Saint-Saëns: 2 Chœurs, Op. 68: No. 1, Calme des nuits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93b5839718bdb4dda6ee3acfedf5561c61dcc1620389a35d5fb834c0b0ae5ad. 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/GBAYC9203525.
Tchaikovsky / Arr. Stetsuk for Cello and Orchestra: 16 Children's Songs, Op. 54: No. 10, Lullaby in a Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add071ef2e7bc3d7f84633e690b9bbdebbf7290d978de79b0a89668f0bb1a11. 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/GBELP0500312.
Humperdinck: Hänsel und Gretel, Act 2: "Abends, will ich schlafen gehn" (Hänsel, Gretel)
Symphonieorchester des Bayerischen Rundfunks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7f1b0a4567dd7fd9ba45f83d332865950f90feb5768cdee7e84a7fa4e742f9. 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/GBAYC8903785.
Mozart: Serenade for Winds No. 12 in C Minor, K. 388 "Nachtmusik": III. (b) Trio in canone al roverscio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f56fd2ff8373f018be5a49d03b446d67123a93bb12cf3a2bfc9b0223922f25. 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/DEA349601423.
Vivaldi: Flute Concerto in G Minor, Op. 10 No. 2, RV 439 "La notte": V. Il sonno. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315383e4f71c88fdb01a5839f50bfba714e85f784920c6987ecab185ffa0711c. 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/GBAYC0501761.
Tchaikovsky: Mazeppa, Act 3: Maria's Lullaby (Arr. Milstein for Violin and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3574503ad0b1af291a55eeee3d092db0a29288610b8e9ae4d64b767a1859c3. 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/DEA808601400.
Telemann: Oboe Concerto in F Minor, TWV 51:f1: II. Largo e piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8283ae68a2703739301bcfee719320cf3b706131b726bca104e89733f15f91. 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/GBAYC8100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892784254f4e8ae8d282afc5cecfa7794e4b23e98d66318ff3a3657eca0cf1b. 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/GBAYC2203391.
Britten: 2 Lullabies for Two Pianos: No. 2, Lullaby for a Retired Colonel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b55d0988230166f43d921d34933e484558a84375bb2e15874e349b80cfaa2. 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/GBAYC9003907.
Schumann: Kinderszenen, Op. 15: No. 7, Träumerei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e323f875c87c144f8d1eed45cb669aa57582210af069f7d733d232be467a27e. 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/FRZ111000143.
Tchaikovsky: Children's Album, Op. 39: No. 21, Sweet Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4d0b15e55be36fb59853e94c6440eb8404c81ab5fd12bd3476b5257d495061. 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/FRZ209100022.
Tchaikovsky: 16 Children's Songs, Op. 54: No. 10, Lullaby in a Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841f713e5ee7984c98723db5172c7f8a70e7d94e65228d2c72dcdc0fa06feab6. 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/FRZ209023903.
Anonymous: Lullaby, Lullow "I Saw a Swete Semly Syght"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2676bdfeed055254ba8240f4509f6b46694d9c4fb23b7b2104f9a3406f604ab. 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/GBPFW0701022.
Gershwin: 3 Preludes: No. 2, Andante con moto "Blue Lullaby"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e5fc4018134d8cfe2889143eddb33de63b0049fa3ca924b4c6e3d81313e79. 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/FRZ209447032.
Purcell: Funeral Sentences: Man That Is Born of a Woman, Z. 27
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092630ceb9efaab8dcec252881b68c414b809172c1648278a36aa9f51bf21cee. 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/GBAYC9103806.
Debussy: Children's Corner, CD 119, L. 113: No. 2, Jimbo's Lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b2a67962c0e06c0baea1c67a6fe71dacd4e5fa62900dca084cf587473abb8. 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/FRZ207200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada76053fe87e5d43c8ddafb2bd30ffbbfd1ad849a4a990eb0e5f57d500db75. 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/GBAYC2200736.
Schoenberg: Verklärte Nacht, Op. 4: I. Sehr langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7bb198f09973d8138bc0067140d40f43517c1ce7880593dbff26cea2a40f48. 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/GBAYC9403260.
Tchaikovsky: 6 Romances, Op. 16: No. 1, Lullaby (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb108a0f08babc2c1a1597979b5f26cb43432cb56d3bb0773492aa0ed3bb2992. 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/FRZ209219101.
Bach, JS: Goldberg Variations, BWV 988: Aria da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fb18fc0bcbc61a16d10acfc73580a55e4e93c738997dea9cb7d5a76bb71d3. 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/GBAYC1100508.
Rachmaninov: 12 Romances, Op. 21: No. 5, Lilacs (Version for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8954e442202dd44bd330af3f84c1a290a1844dca99816a1ccd9c576b4c67c37c. 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/GBAYC8901452.
Fauré: 3 Mélodies, Op. 7: No. 1, Après un rêve (Version for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2019e115baf96d68d48075eca26a0bc100dc0f01a4b99c6a30771070bad8fb0. 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/GBAYC9802732.
Vaughan Williams: Hodie, a Christmas Cantata: XI. Lullaby. "Sweet Was the Song the Virgin Sang"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2198bfc220ce9edffcae5314b1588d1506fe49ecec77b31a2d33cb21cd87b7c5. 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/GBAYC0002262.
Mozart: Serenade for Winds No. 10 in B-Flat Major, K. 361 "Gran partita": V. (a) Romance. Adagio
Berliner Philharmonisches Bläserensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa760569626b6d6d2c49a8081a380a57f6990e31c04de7ebb19cae9a10f80806. 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/GBAYC0501653.
Vivaldi: Concerto for Two Mandolins in G Major, RV 532: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc63c27811d983d6ac5a55fc25321c41bf6c6bb228f51ae64e0e9d558a1565a3. 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/GBAYC0103447.
Grieg: 19 Norwegian Folk Songs, Op. 66: No. 17, Lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38a0fa059799edd2524cb24a393afee0ca20d2e228e9043ccdf26c34c6b1142. 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/GBAYC9701580.
Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam (Excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876c47a97085d6d5f2ee4cfed6fa6daf2d1b30f05dc3ac5658d900303cb97a5e. 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/GBAYC9000286.
Massenet: 2 Berceuses: No. 1, Très calme avec un sentiment intime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1c23c99ea6abd5cf713cec38b0b34c6cd584c65beadc59da84cbd36e10f8b6. 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/FRZ110901947.
Stravinsky: The Rake's Progress, Act 3: Lullaby. "Gently, Little Boat" (Anne, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464d3c71633f8f7d1834cf852e46a677673768e118f9b01f30c154c99814c19f. 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/FRZ209516071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc719cae7300b7a34125bb16d899a2ca978ae4b557d1f40f62b0ec96bc62f7b. 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/GBAYC2102691.
Delius: 5 Little Pieces: No. 4, Lullaby for a Modern Baby (Orch. Fenby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9493b2d98d3096138b892535ee70ec1a87f0f5a6abb99f16611e35f88992103. 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/GBAYD0600174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcacf4fcfdada250f4e1dc077f10e5118c3c8f54e8b2720cf802c2f47b6d98d9. 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/GBAYD8700335.
Tchaikovsky: 6 Pieces, Op. 19: No. 1, Rêverie du soir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ccba6c0738dfd6ec1cbcd9aac9b5eee9a660c2727d496270514fe3e60a8dd. 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/FRZ209218110.
Offenbach: Les contes d'Hoffmann, Act 3: Barcarolle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ddd0b78c81099cd5f0000bc5e50c60741db0530b81e01023e0226ce378e9f5. 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/DEA340301060.
Marcello, A: Oboe Concerto in D Minor, S. Z799: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b3295a07c413709265578765d43c67e63a500b2ab77a0c61466cf16019e3d. 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/DEA800111002.
Mendelssohn: A Midsummer Night's Dream, Op. 61, MWV M13: No. 5, Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc513847d2b41aa521a8382f8ebc0d3a244f698e14bb5ea947a0d9d8e734859. 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/GBAYC9000295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621de62f17f281e5382cbd6c00ebbdbd22c9ad3f6e6339ce5fe499390872b86c. 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/DEC628800661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98369c1e8dd8ab5aa9a7ea6817db47f82902ea62e5f84ffd8d19a37f4011f72e. 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/GBAYC1502118.
Stanford / Orch. Gamley: Songs of Old Ireland: No. 30, Irish Lullaby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071cd397c180fb8f45f5b3633f462b91fd1e3445814cc2d7277c1d4df2aa8a7. 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/GBAYC0600578.
Ravel: Berceuse sur le nom de Fauré, M. 74
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c66a70458a98c6aeb9b70dbd4199994c97e63ae408b2937c40c927d6c1bd0. 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/FRZ207303800.
Shostakovich / Arr. Atovmyan: The Gadfly, Suite Op. 97a: No. 8 Romance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364608020ecbb920a1f7dfe29ead2172d60ad1579d587a4426c923ca124ee02c. 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/GBAYD9100155.
Handel: Serse, HWV 40, Act 1: Largo. "Ombra mai fu" (Version for Trumpet and Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b102a98697b9599e00eef35d869cb852f710ca1dd32d8e6e3dfd4f4f3937a5. 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/GBAYC8700133.
Tormis: Swing Songs: No. 2, The Sea Under the Swing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3135f131b0615beed7642900bd0bcc95d3beab68e332b267781c33cf49e68. 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/GBAYC9502941.
Poulenc: Flute Sonata, FP 164: I. Allegro malinconico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb036f12109e72d7ed10b67fc0c4ab35374cfeb523b1b99545ea4870670a4a1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ117300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73427da1db8c84297539c6be4db9f1032b7c73b963339d0f51b8bba1fb40339. 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/USSM12301023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea243dfdcdd9572817e19824be793b8f51063edf856e60f60289b3a91e7c2d1. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZK6P2147993.
Guitar Exam Pieces from 2019, ABRSM Grade 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82720c5d5ca575fc12b65d90c4d0daa18abab80f485c57dc87af48f48db22b7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBEYQ1854624.
ゆとりのじかん 〜頬撫でるロマンチック・ギター〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971be8e499804dade4d968554176ac8ffb81ead87a32f2ce8c8ae356224cc02. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/JPCO01320030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48111db6a3482327eb60cdc1ae21e235134378a95bca42874bb148df00ada6ad. 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/QZK6P2147998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379218cdd993f7d7c222640dd9220f4fd4882944eabb37ea53e6d3cf4d18a7c5. 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/DET311101513.
2 Temas populares cubanos: No. 1, Canción de cuna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bf2392f248d4a0cc5d4924672fd88289c086553aa3ce3bb025e32c86128815. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKI190240215.