Sabine Meyer (born 30 March 1959) is a German classical clarinetist. She ended her career with a final chamber music performance on 15 December 2025 in Bern. Biography Born in Crailsheim, Baden-Wür
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 0x0d06cf460de09a26b55807ad7d5343430204863991fc4f1165ca5cb021593784. 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/a2a26a34-dad2-47cf-93af-b8f84954ef9d.json and https://artists.proofprofile.net/proofs/artist/a2a26a34-dad2-47cf-93af-b8f84954ef9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Clarinet Concerto/Debussy: Première Rhapsodie/Takemitsu: Fantasma/Cantos
Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
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 0xb687e82b600ad492b1dfaa6c73aa26b8847945cf9cc6f4484d61001c425fb27a. 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/GBAYC9803207.
Deutsche Klarinette. Brahms, Mendelssohn, Beethoven, Weber...
Mendelssohn: Concert Piece No. 1 in F Major, Op. 113, MWV Q23: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb951bacc86b44780c907b56dad6449e7c2fbaa59d9f58ed1c1f837f6f71693. 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/GBAYC0202285.
Mendelssohn: Concert Piece No. 1 in F Major, Op. 113, MWV Q23: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2fb25d107f0768d286dec36586bd4e40f956a58df7862c7313dd06168aee4c. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/GBAYC0202286.
Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: I. Allegro appassionato (Live, 2002)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee622e4301b08f6d82d7113de931c59302f0e29c50f5d1e440af369933f65a. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEA340300780.
Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: II. Andante un poco adagio (Live, 2002)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec7b8d69e87c801391d592a93c1f6d231a4d2be0b63a155c85df5a9cf044465. 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/DEA340300781.
Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: IV. Vivace (Live, 2002)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198c5896b4b0ca858569973beddb2702ca466ae9e827bd97db04aed3ac7a6fa6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEA340300783.
Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Thema (Arr. Schottstädt for Clarinet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42bf6d2d22e69b5bf491af8f6cf0ea89bd4728780760bc088b7deaa2942b87. 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/DEA349600307.
Weber: Variations on a Theme from Silvana in B Minor, Op. 33, J. 128: Variation II (Arr. Schottstädt for Clarinet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b92e2850639daaa454febec0af38f88b17dd834ca07aad3a5c9b3076e9d17. 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/DEA349600309.
Beethoven: Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caf8799b48cc63b7814d5dc9262786a282f474916f2b2512a5a21ba59386501. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEC628300900.
Beethoven: Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e47c020590f1f5ddcb02525dc36ba7b514650e17cafe08801fb7434d2f12133. 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/DEC628300901.
Octet in F Major, D. 803: I. Adagio – Allegro – Più allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a15b1a0e8092f4d565c9277e7c978d65ea296eea6bb828ed7451e1e962080f. 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/FRU621943801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8ab82890b3ea81ca83663399f0c6fd42d4d9cf64a48fb546e0ef193637fd03. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRU621943802.
Octet in F Major, D. 803: III. Scherzo. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dee52fe616dfbf9548a76f67e1170867a45cadf6c1566de8b9b80381b0798d. 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/FRU621943803.
Octet in F Major, D. 803: IV. Andante - Un poco più mosso – Più lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47f96752b6b25ff6d1b3d60aeb77c8eddada9284cd97ec370d483c4f21edab4. 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/FRU621943804.
Octet in F Major, D. 803: V. Menuetto. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df41785aa269a9040d084d94eddf4024a984996916b2bc801fa1563535f313. 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/FRU621943805.
Octet in F Major, D. 803: VI. Andante molto – Allegro – Andante molto – Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ca53c48e2bd4899311facc795fae86010e7d8de6fc895658ef1f073dd24f88. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FRU621943806.
Mozart: Clarinet Concerto in A Major, K. 622: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88be06cecc53902440526c7f80f6c72e2f18bcbf69ac694c8d5cdc5826397ff8. 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/FR50X2410803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4421f367349ebbcf39f73c0f27e74656ae1780dedfadc2086f5489e318b2d. 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/DEA349000917.