Günther Leib (12 April 1927 – 5 March 2024) was a German operatic baritone and professor of voice. A Kammersänger of the Dresden State Opera, he sang leading baritone roles both in his native Germany
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 0xc9d657f924b6cd01ac75f36e4ef46986fe4507dbc7f2d148becb828d7e8dbeee. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe252167-09fd-45aa-99b9-38ec8b4d9e87.json and https://artists.proofprofile.net/proofs/artist/fe252167-09fd-45aa-99b9-38ec8b4d9e87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
St. Matthew Passion, BWV 244: "Kommt, ihr Töchter, helft mir klagen" - Remastered
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 0xc83e22d769e084a4bb1935deadfef8b51f63e0a41d87635c7080b8f723a66efe. 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/DES382140501.
St. Matthew Passion, BWV 244: "Da Jesus die Rede vollendet hatte" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08d5043a477a4c42ec1231998b837f01cc5f9a959af7207397eb92a6026156. 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/DES382140502.
St. Matthew Passion, BWV 244: "Herzliebster Jesu, was hast du verbrochen" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece243d9ea02cab5281849c6d36b83aa5d2c097322b667e102c777b79d0928f3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DES382140503.
St. Matthew Passion, BWV 244: "Da versammelt sich die Hohepriester..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e12863b8de2bf6742bb378bf5c83eb6224da543b93aa200fa2c453f105cec. 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/DES382140504.
St. Matthew Passion, BWV 244: "Du lieber Heiland du" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e07740469a0a9b61139f2413e5547ee2272c2cd80aceee315cefee01daaa61. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:49:31Z), 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/DES382140505.
St. Matthew Passion, BWV 244: "Buß und Reu" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197c470ec1300ada77473d3e22e5e95a4a221c88876f06b24a332846aa7beed5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:21:01Z), 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/DES382140506.
St. Matthew Passion, BWV 244: "Blute nur, du liebes Herz" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf573e403d6e869d42647adeac8e8739467cd83a13c6def8045bcc3b94ab60162. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DES382140508.
St. Matthew Passion, BWV 244: "Ich bins, ich sollte büßen" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f32c62106e8764be96bc3da61299d93bc7f48722d2739aedd807cc780def25. 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/DES382140510.
St. Matthew Passion, BWV 244: "Ich will dir mein Herze schenken" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebdb3f08a83a92271f048613a251d313b8ef9b9c7ad9b427ca1876e081c34e. 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/DES382140513.
St. Matthew Passion, BWV 244: "Erkenne mich, mein Hüter" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09340739d6c78b579dc0829604585171b3a8f6f68aba94e8ac6734cb15ff6064. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/DES382140515.
St. Matthew Passion, BWV 244: "Ich will hier bei dir stehen" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfef6c347f727dd0dd41d0357f8f71b15ef1ad0608072b5b5671fc6ad238bda. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:45:51Z), 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/DES382140517.
St. Matthew Passion, BWV 244: "Ich will bei meinem Jesu wachen" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2fac5d2b3540d0aa27b18e46a76272194feb5a8310e36b930d7892f8513f37. 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/DES382140520.
St. Matthew Passion, BWV 244: "Gerne will ich mich bequemen" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ea617e048b4c02034938ad3be9406b77dd349f534bb80a9dca8629a9ded634. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DES382140523.
St. Matthew Passion, BWV 244: "Und er kam zu seinen Jüngern" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3883aa431855be43cbad7ec2016e5630d081cea69db81b042cfc767a2893d9ea. 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/DES382140524.
St. Matthew Passion, BWV 244: "Was mein Gott will, das g'scheh allzeit" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb14df12cf916673a0a939babc1c8e1c0f0cd89aa4dea4cc67724afb07860b5d. 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/DES382140525.
St. Matthew Passion, BWV 244: "So ist mein Jesus nun gefangen..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3d576f8a4d043f1efa6c9e1119cb5d4fc1e9bd5223b32e43b527311a5f29a. 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/DES382140527.
St. Matthew Passion, BWV 244: "O Mensch, bewein dein Sünde groß" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb17c0c3944ef77e7434c9eed305e1c7bc0f9ecc93457c62b194f3813e65039d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DES382140529.
St. Matthew Passion, BWV 244: "Und wiewohl viel falsche Zeugen herzutraten" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e6bd0da8b89e42e87199bca87be6b6b872ae5e7d19381585ab4227e76d4364. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:58:50Z), 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/DES382140533.
St. Matthew Passion, BWV 244: "Mein Jesus schweigt zu falschen Lügen stille" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fc4c4b38dadd0a0279bc2855bd88930cd02dc55c391c0fce0d9f25a071e1c9. 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/DES382140534.
St. Matthew Passion, BWV 244: "und der hohe Priester antwortete..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c30d3586787fd3b344df3035c408568ab41eff96097f6237c9d630bb2ac914. 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/DES382140536.
St. Matthew Passion, BWV 244: "Des Morgens aber hielten alle Hohenpriester..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e13fce363e823ce6861f7ff21f93bfc882351e5e7bdf4ba27c95c9c42f56ef. 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/DES382140541.
St. Matthew Passion, BWV 244: "Sie hielten aber einen Rat" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78c4275bb9c292b33c765bf65e9f8a4ac385cb4c20e48c1bc3d834217ec0cca. 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/DES382140543.
St. Matthew Passion, BWV 244: "Auf das Fest aber hatte der Landpfleger Gewohnheit..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f85a0a3863f92209ae85a6a6699524b0c58d984ca5bcbb32ed99c0c4522f69. 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/DES382140545.
St. Matthew Passion, BWV 244: "Sie schrieen aber noch mehr..." - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6169918c549906f4712f223b086c7ba2aa657be9e1847a9be8f12550e31a837. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:09:29Z), 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/DES382140550.
St. Matthew Passion, BWV 244: "Der Heiland fällt vor seinem Vater nieder" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43177ea4aa076a0065b4ddb435ad4239547b6c21ca4b5d243b5e118969cad9e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DES382140522.
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
St. Matthew Passion, BWV 244: "Gebt mir meinen Jesum wieder" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c92483edf34fdcf7a75f5fda075b1ffbbb6bd89457f31f41a12871b7d3e3ae6. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/DES382140542.
Puccini: Tosca (Highlights - Sung in German)
Smetana: The Bartered Bride (Sung in German)
Donizetti: Lucia di Lammermoor (Highlights - Sung in Italian)