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 0x7f2b75196fbb17b8abe927710d5afc87809d6f2c4f6904c88986754d7cc85d18. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/739c8067-12d8-4466-bdc5-6b7585c3407b.json and https://artists.proofprofile.net/proofs/artist/739c8067-12d8-4466-bdc5-6b7585c3407b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart the Magician; Songs and Fortepiano Pieces
Consolatio - Bach: Cantatas Nos. 22, 75 & 127
Cantata, BWV 75 "Die Elenden sollen essen", Prima parte: III. Aria. Mein Jesus soll mein alles sein (Tenor)
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 0x837fac9abf1267c3aa6af9e574c96f73ff2ea27b4e4968bbd244b53061fa872e. 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/FRU621733203.
Cantata, BWV 75 "Die Elenden sollen essen", Prima parte: IV. Recitativo. Gott stürzet und erhöhet (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023056b56814412b88bf35af19869ce37c7bd76205190d6b0869dafcafd00bce. 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/FRU621733204.
Cantata, BWV 75 "Die Elenden sollen essen", Prima parte: VII. Chorale. Was Gott tut, das ist wohlgetan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd766e578ac4448fdcff0041af4f2c74c75e75ae6072770620f459fc5946a55a0. 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/FRU621733207.
Cantata, BWV 75 "Die Elenden sollen essen", Seconda parte: VIII. Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30917ce90413553ce27ccff8ef9e63c033b37444c67983cefd5c520429b77c99. 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/FRU621733208.
Cantata, BWV 75 "Die Elenden sollen essen", Seconda parte: IX. Recitativo. Nur eines kränkt ein christliches Gemüte (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa24d1f04796c8b6557c163f2a1f77cfae4ae2e8d6dbeef9835988fd9f62cd. 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/FRU621733209.
Cantata, BWV 75 "Die Elenden sollen essen", Seconda parte: XII. Aria. Mein Herze glaubt und liebt (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92766b332859d6f6f3cfe78fda599a10b0942e29d5f7c6afe137d748d82a023f. 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/FRU621733212.
Cantata, BWV 22 "Jesus nahm zu sich die Zwölfe": IV. Aria. Mein alles in allem, mein ewiges Gut (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77b59d35e81c3ab20789994885b6c121fe447a9712c79b066244a9e0055bdd5. 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/FRU621733218.
Cantata, BWV 127 "Herr Jesu Christ, wahr' Mensch und Gott": II. Recitativo. Wenn alles sich zur letzten Zeit entsetzet (Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beda0ee0f16c2089e68fef144fdca95f8fe814447c228b988b8c450cf5ee8c3. 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/FRU621733221.
Cantata, BWV 75 "Die Elenden sollen essen", Prima parte: I. Chorus. Die Elenden sollen essen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb5900cb7f386950c150be27a22eeabd1607e7e2cffede387303770bc5898ac. 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/FRU621733201.
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
Cantata, BWV 75 "Die Elenden sollen essen", Seconda parte: XIV. Chorale. Was Gott tut, das ist wohlgetan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e087e09acf4e6438b4b9283c17268d4a6c0076d8f231327b1a57073f9ba5e. 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/FRU621733214.
Cantata, BWV 22 "Jesus nahm zu sich die Zwölfe": I. Concerto. Jesu nahm zu sich die Zwölfe (Tenor, Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06906c80e10401d7963925a2a32c4895d03e89452133dcc89d41089b8c59191d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRU621733215.
Cantata, BWV 22 "Jesus nahm zu sich die Zwölfe": V. Chorale. Ertöt uns durch dein Güte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109f754090df8c0186b84b9a5e8ff42614e991cc48f0b3e8dd9eb8cc9dfc12fb. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRU621733219.
Knabenchor Hannover: Michaelisvesper mit Werken von Michael Praetorius
Magnificat in D Major, BWV 243: I. Magnificat anima mea Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4433fdb6f5f85ac23b11be351b75977beb29ad1bdfd69302295ff00642c1b. 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/FRU620910201.
Magnificat in D Major, BWV 243: VI. Et misericordia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87de1adb5c59e6b3bf38d02117528dac132f171d61d9e64d2a35660f02e9a688. 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/FRU620910206.
Magnificat in D Major, BWV 243: X. Suscepit Israel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1694777430bb9060ba5afd2c3d388a59d3eccccc1acc786b347d4189e8e9c3cf. 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/FRU620910210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbf9ab5df7a279cafd044cc21c66e27b43faffa852b7612c0db6f36cc162bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRU620910215.
Magnificat in D Major, BWV 243: IV. Omnes generationes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4068df89d8c08282367da9d5833568f835e627fcda29a529ff4ae78acc14ad56. 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/FRU620910204.
Magnificat in D Major, BWV 243: XI. Sicut locutus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c28f55f9c40646577435e51bd420d29f0573d68db0cc933dffbd86b202565c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRU620910211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766203ab88c409bb67cc56be4ab87f13d6af0e20ec269525c7e99747beceeddd. 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/DEB111000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef476d0b5a4a47da9569743f64f313ad9cad7df0bcc8774d4419c6ba276b7b38. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:11:38Z), 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/FRU620910214.
Magnificat in D Major, BWV 243: XII. Gloria Patri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae87abe06f2ec797b512bd58cd66f0a76cf7eb41bc6b576b73fe76fdc3b0ed0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRU620910212.
Magnificat in D Major, BWV 243: VII. Fecit potentiam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b249963791c7ad996bf5faac7c0ee959c29aa8bc0dbc4c74bdc4bdb7ad147a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FRU620910207.
Magnificat in D Major, BWV 243: VIII. Deposuit potentes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcee2292792096de06c5b16bd2a99bb43a14ddad3b1bc805a13519bda9f0e1f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRU620910208.
Missa in G Minor, BWV 235: VI. Cum Sancto Spiritu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76a84d86165cf2f49ffb87e444463bf31f5f739aa0cc8ce5f3ad3af9f190bf3. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/FRU620910219.
Missa in G Minor, BWV 235: V. Qui tollis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6f1bf0c210e03d00104a2dd024e96cba2d6b435df98d8936f0206460b6755e. 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/FRU620910218.