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 0x71bab48f75a2c2ed3c90dd81f2af9a72dac94a54e6b0b81f4eb439d33b9332ca. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84632ba0-3c55-4891-bec4-1b39dc2f8085.json and https://artists.proofprofile.net/proofs/artist/84632ba0-3c55-4891-bec4-1b39dc2f8085.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heinrich Schütz: Die Gesamteinspielung (Vol. 15-20)
Heinrich Schütz: Psalmen & Friedensmusiken (Complete Recording Vol. 20)
Schütz: Madrigale & Hochzeitsmusiken (Complete Recording Vol. 19)
Heinrich Schütz: Die Gesamteinspielung (Vol.1-8)
Italian Madrigals, Op. 1: No. 11, Quella damma son io, SWV 11
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 0xba0542d527bb7e7f501ef4d200add4b349fa77113c005aac0b400f0149b57367. 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/DEB111100811.
Heinrich Schütz: Psalmen Davids (Complete Recording Vol. 8)
Psalmen Davids, Op. 2: No. 2, Warum toben die Heiden, SWV 23 "Psalm 2"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45380f694a1c554cd5254b1eb8fc35256f26ad848726967fc51a78db62f4f3b. 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/DEB111301602.
Psalmen Davids, Op. 2: No. 4, Aus der Tiefe rufe ich, SWV 25 "Psalm 130"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5adb3bf370e7be766e7ab32c27e573a8af7d72dc26c438cd0513b93cb72330. 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/DEB111301604.
Psalmen Davids, Op. 2: No. 5, Ich freu mich des, das mir geredet ist, SWV 26 "Psalm 122"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f44dc2ee8819f738018403bb37d82b09f893fefce1c36993dbad533fcd4a51. 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/DEB111301605.
Psalmen Davids, Op. 2: No. 6, Herr, unser Herrscher, SWV 27 "Psalm 8"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244718e1f76d13517c36c87eeaef360255bd7429504cdd441409ffd2176200fc. 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/DEB111301606.
Psalmen Davids, Op. 2: No. 7, Wohl dem, der nicht wandelt im Rat der Gottlosen, SWV 28 "Psalm 1"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e94efd606706fb47ecda6a565badbcc080dab237117ccc91f9b941e40e092b6. 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/DEB111301607.
Psalmen Davids, Op. 2: No. 20, Nun lob, mein Seel, den Herren, SWV 41 "Psalm 115"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a65bf578614cfc0bf967fbb791ee52ce95743127950ffc1d7d37286685fba40. 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/DEB111301707.
Psalmen Davids, Op. 2: No. 21, Die mit Tränen säen, SWV 42 "Psalm 126"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6975ea831fe807bee7e44c402d221307b781d829c846237a51aa4fb602cefd1e. 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/DEB111301708.
Psalmen Davids, Op. 2: No. 9, Wohl dem, der den Herren fürchtet, SWV 30 "Psalm 128"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020fc68b05908a5fb8cbb9d159c5e7d71f477abfd71fbf5303989c09d40e28d5. 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/DEB111301609.
Psalmen Davids, Op. 2: No. 11, Danket dem Herren, denn er ist freundlich, SWV 32 "Psalm 136"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec03396b2207f41e1dced445196e6c988b1a0ed6b5ce352cb6b409e2bb9bbeb. 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/DEB111301611.
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
Wenn Engel musizieren I (Geistliche Musik - Musikinstrumente von 1594 im Freiberger Dom)
Wenn Engel musizieren II (Weltliche Musik - Musikinstrumente von 1594 im Freiberger Dom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff409d5d4d653949d2b4849dc32584b9119b21494bf3dbc455251ec68dd6c3. 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/CH6542154177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6a6f71c6e1e5025b4cf8eb352ec8cd652b900ec2a1a66028be8b5a1bbd6b7. 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/CH6542154181.
Heinrich Schütz: Symphoniae Sacrae II (Complete Recording Vol. 18)
Mozart: Complete Edition Vol.11: Vespers, Oratorios etc
Litaniae de venerabili altaris sacramento in B flat, K.125: 1. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acadfa74f3e23c317eccfb0dcfe9eb24ced049710442bd72c2fe9dca61a30c. 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/NLA508201714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0643f2382f459e95c4d8377fcf5e778505263a676f67adc2fbf6b4833850579. 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/NLA508900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2679847089a5434866a4759fbc47f63bbcf9c09185f2175b340c5c3fde6dff29. 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/NLA508900302.
Litaniae de venerabili altaris sacramento in E flat, K.243: 1. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025da7ccb3bd02f5a271476061d951d826f4f64a556d540dcac9b66b9beba51. 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/NLA507728901.
Litaniae Lauretanae BMV in D, K.195: 2. Sancta Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061d963a752a4f565d1cc662bf88e23451e2646019a4a89047b6fa3625181a87. 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/NLA507728914.
Mozart: Shorter Sacred Works (Complete Mozart Edition)
Choral "Aus tiefer Not" (Schlußchoral der Kantate BWV 38)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4547e22e3a83733f59dd41c21accd09045b78cf26f696064a025882de355e5fa. 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/FRZ140926010.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 1 "Einfache Fuge über das Thema in seiner Urgestalt, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad7f3ebee29d51e79ed2126437859cd14910234bc5280378cbb5c1c0ebedd45. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRZ140926020.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 2 "Einfache Fuge über das Thema in seiner Urgestalt, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ee89e9cb5ac8f3f6fcdd105f6ad3cffc91fad85ffb449392a0eab6d23014ba. 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/FRZ140926030.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 5 "Gegenfuge über das variierte Thema und seine Umkehrung in einer Wertgröße, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b062d8b5d8c8dbf90ae3a1836e3f6e74c765a9d1e9cc4a6844cbf8257c10d05. 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/FRZ140926070.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 8 "Tripelfuge über zwei neue Themen und das variierte Hauptthema, a 3"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860b40be1ba016f1da78765ae19501b9ad8a79e2c352dcd91e14852dc04b320f. 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/FRZ140926110.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 11 "Tripelfuge über zwei neue Themen und das variierte Hauptthema, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356707ca6174220346975ea6401402665cf6282d44c71e572489838853dfde2. 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/FRZ140926140.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Kanon 17. "Kanon in der Duodezime"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8583baee8d4c0851bc2d90a580b194b0e74211b98d64f57728f9d014368fea. 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/FRZ140926150.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 12a "Spiegelfuge über Varianten des Themas, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24da0f2a9c35c32fecd1fb5e03a7997732d4bc02b42a27570e4098905cb22f2c. 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/FRZ140926160.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 13a "Spiegelfuge über das variierte Thema und seine Umkehrung, a 3"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9625b8e40423e337b9f23db32aab65b3bd9e4de04b71680ee73b2da9dc9b59. 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/FRZ140926180.
The Art of Fugue, BWV 1080 (Roger Vuataz Orchestration): Contrapunctus 3 "Einfache Fuge über die Umkehrung des Themas, a 4"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1939a1506b320d9476255eb724f3891945398fd69c3b95c5788a1df63f135489. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FRZ140926040.