thumb| thumb| Francis Jacob (born 4 July 1972) is a French organist and harpsichordist. Biography Born in Saverne, Jacob started playing the organ at a young age. He was only thirteen when he repl
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 0xb256a80a28afea191fa234fe4ad7a8b5976457d073cbf42bc2063911f85cb39f. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d30317a3-2d64-40a8-8e26-9440185b34fc.json and https://artists.proofprofile.net/proofs/artist/d30317a3-2d64-40a8-8e26-9440185b34fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magnificat in D Major, BWV 243: I. Magnificat anima mea Dominum
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 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: III. Quia respexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0a4158cf410d52038b59241c103cda36e8e28fe9fddcf29494dfc8776d764. 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/FRU620910203.
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: 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.
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 0x26c4bace009532732d6977a51524e7b9ab0a21cb1fbbecf4457e4e36021ec998. 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/FRU620910213.
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.
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.
Missa in G Minor, BWV 235: Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17566ca4e183b904a9ff068a91e99e64e87e77245a0d3d39a326420af35b10bf. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FRU620910216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93358c17c369d715cdd4c75d729f5a4c962d6fbfd122a176669dcc152872b4. 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/FRU620910220.
J.S. Bach: Tombeau de Sa Majesté la Reine de Pologne
Tombeau de Sa Majesté la Reine de Pologne, BWV 198: Aria : Wie Starb Die Heldin So Vergnügt!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1c406328888525b6c86b9c68761da9613ef1e90b7413b9309cb1592407b01b. 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/FRU620703014.
Gleichwie der Regen und Schnee vom Himmel fällt, BWV 18: Gleichwie der Regen und Schnee vom Himmel fällt, BWV 18: Recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b7cb981b697d69692b34022a190510ffb5d84756c3f0c67aa33064b3dba27e. 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/FRU620400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c895b12cfbb845ad815b77901c96ff40d0b9d1ea6a3a87c1295bee3808ed71e. 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/FRU620400203.
Gleichwie der Regen und Schnee vom Himmel fällt, BWV 18: Gleichwie der Regen und Schnee vom Himmel fällt, BWV 18: Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150791febf6e58841a70ed85784f1204bcbae519353cdd6f4a57d76acc2d46b0. 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/FRU620400204.
Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Sonatina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2667b966e38f5d5ef4b00a5832ea18c2f8d88af5f800c35b924d90687c2ad. 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/FRU620400206.
Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Coro con Choral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bec3fbbe6b355c289260df294b177b0c3210c35719f9f10398c3ff57ef8f565. 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/FRU620400207.
Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Gottes Zeit ist der allerbeste Zeit "Actus Tragicus", BWV 106: Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bf1415356190be8517fd6d7a7fc19e2d737b7d56821083831a4376bdd3abf. 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/FRU620400209.
Nach dir, Herr, verlanget mich, BWV 150: Nach dir, Herr, verlanget mich, BWV 150: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659a3248d65fa3ff5127924edcbd5c9b3362df14b0cda962ea75003b894a967b. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FRU620400211.
Nach dir, Herr, verlanget mich, BWV 150: Nach dir, Herr, verlanget mich, BWV 150: Coro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1289e2fd309c014b00cd2f504290115ca106a45e95a76a501aae58d09a0ce51. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FRU620400212.
Nach dir, Herr, verlanget mich, BWV 150: Nach dir, Herr, verlanget mich, BWV 150: Ciaccona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d31b1f506b511456c2d99bd9933d5819e3db079d6198a8f036f1dcdad7e649. 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/FRU620400217.
Les Chants, Psaumes: Le Seigneur Est Mon Berger, Psaume 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef792abea281d671c6ca01a026bf53d53e4486280d9e9047dd0eda024000447d. 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/FRV770900006.
J.S. Bach: Musikalisches Opfer, BWV 1079