Fritz Neumeyer (born 1946 in Germany) is an architectural theoretician and a professor emeritus. Neumeyer held the chair and professorship for Theory of Architecture at the Technische Universität Ber
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 0x1b6d9ec8af8dd34f369ef0cb6abe532e95b346e314c0ef47b61ea30b37311e8e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d642cea9-d483-4c5a-a7cd-7b19e63c37ac.json and https://artists.proofprofile.net/proofs/artist/d642cea9-d483-4c5a-a7cd-7b19e63c37ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Petit Ménestrel: Bach raconté aux enfants
Bach: Concertos pour clavecin, BWV 1054 & 1058 (Mono Version)
Don Giovanni, K.527 / Act 1: "Là ci darem la mano"
Orchestra Of The National Theatre Prague
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 0xbeaddb7c9ac2beaa0340293d67501bb4e67c259d167586cb7fe486e7de3b0067. 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/DEF056730006.
Piano Concerto No. 21 in C Major, K. 467: II. Andante "Elvira Madigan"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9c3dd41a058beba3a36f404fc424ba6dcae339e479f27d930034e92c4d91b. 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/DEF056100241.
Piano Sonata No. 11 in A Major, K. 331: III. Alla Turca (Allegretto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79803e1f9221061521af261c7d0825f3b6c23abd0ac81766b91938fa6581af9d. 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/DEF058225093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363a1d9cb6a356cf559a000e0719daa1ab05057b04a4cd04d6785ce61d73d71b. 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/DEF057130003.
Die Zauberflöte, K. 620, Act II: No. 14, Der Hölle Rache "Queen of the Night Aria"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a2d9cc39e2097e47d6499a79390f9691a260cc694b7081debceb4c0d5448f0. 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/DEF056430609.
Clarinet Concerto in A Major, K. 622: II. Adagio (Cadenza: Neidich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e67a7565a2be896d18984117aa285a248071ef9b7e6afb6f111190b9f4a7f. 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/DEF058702252.
Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095f0ae886c537e515154e4c789b86de0880f134613600816ac2090a4ee46d61. 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/DEF058702273.
Vesperae solennes de Confessore, K. 339: V. Laudate Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4c0fa122d11c0f757c18cdd163e5bc82be76b457179a179478dd4a4279a51b. 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/DEF059303191.
Symphony No. 35 in D Major, K. 385 "Haffner": IV. Finale. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa37dadacfec62a44aeb42835bdada1a501be110a4871ca6d707dc53bb2f9c. 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/DEF057600104.
Violin Concerto No. 3 in G Major, K. 216: II. Adagio (Cadenza: Levin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9490026f7e047658deb71feb21c7f626f5b44111ea2030f37c99bf4bccb4596b. 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/DEF058402191.
Exsultate, jubilate, K. 165: IV. Alleluja. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043d4100d4f0eafaf41cbe30c5bf36359a751df3114b115023f69cd05c16904a. 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/DEF059303184.
Cappella Coloniensis / August Wenzinger spielen: Georg Friedrich Händel: Concerto grosso Nr. 4a / Nr. 4b, Op. 3, HWV 315
Cappella Coloniensis / Gustav Scheck / August Wenzinger spielen; Georg Friedrich Händel: Concerto grosso Nr. 1 / Nr. 2, Op. 3, HWV 312
U. Grehling / D. Vorholz / H. Münch-Holland / E. Müller / Capella Coloniensis spielen: Georg Friedrich Händel: Concerto grosso (aus dem Alexanderfest), HW 318
Ulrich Grehling / Capella Coloniensis / August Wenzinger play: Arcangelo Corelli: Concerto grosso No.8 - "fatto per la notte di Natale"
Handel: Neun deutsche Arien (Mono Version)
Brandenburg Concertos And Viola Da Gamba Sonatas (Vol. 1)
Brandenburg Concertos And Viola Da Gamba Sonatas
Deutsche Barockmusik: Serie C. Die Ensemblesuite (Mono Version)
Westeuropa zwischen Barock und Rokoko: Serie B. Am Hofe Ludwigs XIV (Mono Version)
Mozart: Ariette, canzonette, lieder (Mono Version)
Mannheim und Wien: Serie E. Wolfgang Amadeus Mozart (Mono Version)
Handel: Recorder Sonata in A Minor & Violin Sonata in G Minor (Mono Version)
German Baroque Music, Vol. 4: The Lied (Mono Version)
Deutsche Barockmusik: Serie B. Klavier, Orgel und Laute (Mono Version)
Bach: Capriccio BWV 992 & 6 Petits préludes pour clavier, au clavicorde (Mono Version)
Bach: 3 Sonates pour viole de gambe et clavecin, BWV 1027 - 1029 (Mono Version)
Hochrenaissance: Serie M. Die elisabethanische Epoche (Mono Version)
Marais: Suite des pièces de violes, Book 3, No. 5
Das Schaffen Johann Sebastian Bachs: Serie E. Lieder und Arien - Single (Stereo Version)
Das Schaffen Johann Sebastian Bachs: Serie E. Lieder und Arien (Mono Version)
Das Schaffen Johann Sebastian Bachs: Serie I. Kammermusik (Mono Version)
Mozart: Piano Sonata No. 11, K. 331 (Mono Version)
Mannheim und Wien: Serie C. Zwischen Empfindsamkeit und Biedermeier (Mono Version)
Bach: Toccatas, BWV 911 & 912 (Mono Version)
Bach: 2 Sonates pour flûte et clavecin (Mono Version)
Die Deutsche Vorklassik: Serie B. Am Hofe Friedrichs des Grossen (Mono Version)
Deutsche Barockmusik: Serie E. Die Sonate - EP (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faa3057d39682e329e135f19506ce3defd71dfff740536a8cd842438f650547. 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/DEF057301270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b5a44517f852a2508ed0132943d2cbaea0f52bebef8104da689f162d4ea79. 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/DEF057301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9c4a6fdaab63efb063fc7a5f499f44f7427e3de2dc5a56dcee8bd700f5661. 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/DEF056000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235c616350053ad999097a1ff85d4de3a6fe9f2a4c37a83d9adf32c91ee29e7. 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/DEF056000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06213d39b7be0e1ce32a02e7f955493d8bdfaef59c5ad3a3beb02d725218d24. 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/DEF056000444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9c4a6fdaab63efb063fc7a5f499f44f7427e3de2dc5a56dcee8bd700f5661. 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/DEF056000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fd0071168835b74b0d680f11160a71b72233d8c320afc7d213b9cde1199f8. 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/DEF056000595.
Concerto for 2 Cellos in G Minor, RV 531
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f0fdc27afd62910bd7ef5b88c42b0f94cedeb72e53b6c0ae93f06192f1e65. 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/DEA580601814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faa3057d39682e329e135f19506ce3defd71dfff740536a8cd842438f650547. 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/DEF057301270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34069be8f0c1787a7f6cd8cb0a6860ec6e7348935e21f04afd13a547a5ed96e8. 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/DEF057301380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0fdc9465cf6a6b61f7e698ea39716cad2efa985d7a892aa50c0d19072dad68. 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/DEF057301400.
Country Dance: How can I keep my Maiden Head
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c28ba2a56f2c1becda3b2c61834a46b56b9826ef3a35f9821711bf60c520ff9. 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/DEF057403260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06213d39b7be0e1ce32a02e7f955493d8bdfaef59c5ad3a3beb02d725218d24. 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/DEF056000444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fd0071168835b74b0d680f11160a71b72233d8c320afc7d213b9cde1199f8. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/DEF056000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad11635da84711ad67cbd500aa921fb6a59de2c4ff610191eaf53e253ba93311. 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/DEF056000451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1e9ac81dbcb4facfa4371c35a7625dc8e81509f41b70aad66a5c9f18dd10cd. 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/DEF056000453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692f7936c2fb3a273dfb7cb1c6fc4cfaafe723400ebdadf7da14aebe3a1b4387. 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/DEF056000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee1d015c66a0e7ace847d3405bdd70537ed76ef299fe78d390cc8c38df1dd3c. 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/DEF056000462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974ad43da79c9887a57f0b7d68d4d4d49f36945c6a5789ba721287d37ff500c7. 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/DEF056000463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328a835442018c0f70080c01f6916d356a24a5708c5786d95b29e78b58bfd68f. 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/DEF056000471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b7813ba4a393e2fa1c540e34cb052f50e0e9933235df5fb73659393fbc250. 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/DEF056000472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51c6b14f1a513877ad71e45e2672a3379bd04b8dcf51f78cb19f0b52db520cb. 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/DEF057301530.
Bach 333: Complete Anna Magdalena Books 1 & 2