Michael Gläser (born 2 November 1957) is a German singer, choral conductor and academic teacher. He was artistic director of broadcasters' choirs including the Rundfunkchor Berlin and the choir of the
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 0x5aaff77803d6c3bf2619a24b6577e297913c705d8377afa30def5eeb5f044a6f. 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/a213e6fa-94a3-469c-9882-2d932ad1eb5d.json and https://artists.proofprofile.net/proofs/artist/a213e6fa-94a3-469c-9882-2d932ad1eb5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fiddler On The Roof (Original Motion Picture Soundtrack)
"Fiddler On The Roof” Motion Picture Chorus
"Fiddler On The Roof” Motion Picture Orchestra
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 0x55e6a0efd69de0d756c8fa57b366a83d14d7d8b9e54bd69c446385eb4c39a854. 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/USNPD0801080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc595406686a442f46f139769cf9c3cabe6ab4f31459dd38ed79484590362a178. 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/USNPD0801081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fb558191362f510fc46bb6cfe458c4526fa223b206ebcc1045aeeef50f9842. 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/USNPD0801083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7c34dfeb36f0f0619b17019bd3dbd3326b8e0fa23a2da95f418fdc9402e23a. 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/USNPD0801084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d8785390749e0338f0c05092f4730b3251c8da1685359ba3a3943c387ff15d. 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/USNPD0801085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ac874af90c84e90a96b31ff037eb20a3a96771118b922d1faecf7fe809f4e. 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/USNPD0801086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002056589264164bfaf7b53dce2af118ff4595fd6eef27e7982583e7f016b28. 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/USNPD0801087.
Wedding Celebration And The Bottle Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a953985c453ce55afae4e76543102cc7332507b5f027cfb482a29fb852dffdf. 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/USNPD0801088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46994d56e6bb9bc84ef8b56781427948051f6a1ed635ec1d53749c39d94cba1. 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/USNPD0801089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f2245f4909e43ed3abba1c96361f6fca8431196c954cf9c1425617ea70ec50. 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/USNPD0801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390839231329ef317da1c39403f391e475ab2974ef0b1472a68b4196a76d0763. 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/USNPD0801091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f4e206822998c16624b1d64a6654ed1e78713225f082f7f1c3cb0ca4246c9e. 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/USNPD0801092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaef9ea63e070c53b81a7e342ff9751f328f72273181209e3c3ca53a58cbc36a. 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/USNPD0801093.
Mozart: Requiem, K. 626 & Ave verum corpus, K. 618
Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35679c9fc8214547b0cb2d74bf6d0a7bd31653d66d79bddc8080a110702a87e. 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/DEE471300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498e8b4780778c8e85d9097c608398be88af3c8328a696ff3fbd123ab901e94. 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/DEE471300037.
Die launige Forelle: Theme: Die Forelle von Franz Schubert (after F. Schubert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d55cfa3c9e75a01101cbad900e1efc5193f90304121060c27a7c777334614f9. 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/DET901655001.
Die launige Forelle: Variation 6: Forelle nach Wiener Art
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f53c21cef2b9a8e0376a2d8a3f771a80ae4fa155cd32ae5b7c4d767fa89e9. 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/DET901655007.
Die launige Forelle: Variation 1: Eine kleine Nachtforelle (after W.A. Mozart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cca30121d34a279432aca18e7db9ecd0f2844861c2ed599d3ad80ab0e04ffd7. 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/DET901655002.
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
Die launige Forelle: Variation 2: Zur Ehre der Forelle (after L. van Beethoven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9725f98242f48a5be2b9b619364469e2713bc9e69b9a7c83bffd11489080004a. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DET901655003.
Die launige Forelle: Variation 9: Fischfang mit Lis(z)t (after F. Liszt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b8c1ba80582385e0a338fc66f1f4e62dab834336ade3d43c8246dbfd37e76. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DET901655010.
Rachmaninoff: All-Night Vigil, Op. 37 "Vespers"
Spohr: Mass in C Minor, Op. 54 & Psalmen, Op. 85
Symphony in G Major, Wq. 173: II. Andante
Carl Philipp Emanuel Bach Chamber Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe347499155ae1665f854d7b0bd244cffb4e4e996f75b6147df2ec9b0951cf92b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DES380001678.
Symphony in G Major, Wq. 180: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f95174e5a124d529f21e43778a3f617b6247718ba92ee4925295ef01e64f8b5. 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/DES380001682.
Magnificat in D Major, Wq. 215: No. 1, Magnificat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efbb0b686bd2406faac2c430e050444c1c4a9b0dcd01a2f712340716ec644c1. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DES380001683.
Magnificat in D Major, Wq. 215: No. 2, Quia respexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a3802b99e259bdf2dcc21577e081c29e110fe4ffed4438545b4d11bc43f201. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DES380001684.
Magnificat in D Major, Wq. 215: No. 3, Quia fecit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82492629d7f3290ddb3d8be0be5510c6df491c7abef19f12720756a02687db0. 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/DES380001685.
Magnificat in D Major, Wq. 215: No. 4, Et misericordia eius
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e72deecb8272d98cae70cb1af3a9f901386fb9809ddca9847cc28e551ec2e. 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/DES380001686.
Magnificat in D Major, Wq. 215: No. 8, Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bab0df1198afbef8234dd205c31677a84b089bd9dbbb8d2fb820e4f2d5605e. 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/DES380001690.
Es weihnachtet sehr - Klassik für die Adventszeit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bd778bb12a403a15aa476d271c5a3bcec6d3d45d30f6e31f36b16a7e5801b. 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/USSM11105287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2fefa0ddcf65135cab7274fa6a65578056ceb4ae3fce241c2890c586d03b1a. 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/DEP629500777.
Ich steh an deiner Krippen hier, BWV 469
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49fe1b4683d3ed0631d9bc4fe8df2c045c7e804f767a3960f557712d4f7ee82. 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/DEP620001039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2281c1987f48d27c9973c707b63770b1420ea50bc44b2c009885819de9150979. 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/DEA810001001.
The Soldier's Tale: Little Pieces On The Bank Of A Stream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ff2e51e7c90ed0608b61c51701522854c1cf6949fca2bd1c1ce1c607e65cd2. 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/USBC19602316.
Markevitch: Psaum - Tehillim / Zemlinsky: Psalm 13 / Korngold: Passover Psalm