Johannette Zomer (born March 13, 1964) is a Dutch classical concert and opera soprano. Career After having worked as a microbiology technician, Johannette Zomer shifted gears in 1990 and studied vo
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 0x81970adf622e6d5c7ca75bf010c92451d2d8d4e88f283bde3abe67e46f11425f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b79accf9-503a-4dd3-8e1a-fdc68bacc03e.json and https://artists.proofprofile.net/proofs/artist/b79accf9-503a-4dd3-8e1a-fdc68bacc03e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf7980f1f21683b6fca1fd835b22f685cf2dd0d93e67480f7f16bf1dded336819. 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/NLQ2E1700015.
Magnificat en sol mineur, RV 610: VI. Esurientes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd800a4f27135d1dfa38b99a690768d0c1a19d7b6ebc67a6f3db8f68d5e1f5b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7281461707.
Magnificat en sol mineur, RV 610: II. Et exultavit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6786f84fcc306cab9d31673c538bde75d8ce32c9593f9c3484b8c28389220. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7281461703.
Mass in B Minor, BWV 232: Aria: Qui sedes ad dextram Patris (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f7b6a6c004d06b28de1076d990dbff7c323d3c2a7c3078ff3b8e0a0f065fc0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES7891000710.
Mass in B Minor, BWV 232: Gloria in excelsis Deo (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe57aa7f556ff6ddecdb002622309e047fd40e09f2c43f67be2cc0c0d2f0fecd. 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/ES7891000704.
Magnificat en ré majeur, BWV 243: X. Suscepit Israel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834824c768aa6e3a78c0a85d61bb38b11a3c355373d72b52133452e4fc280e2a. 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/QM7281461724.
Mass in B Minor, BWV 232: Kyrie eleison (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd271f1016e4e5d4fb78b1005ff3dc9ce3ba488b7a3f3708ea3674cf38a710. 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/ES7891000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2dee7f639831e8e0c46767a72629621c125b752492f0973b2b830dd699aee. 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/NLK170400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c58001137a7b51e89f00e6ba97d81d61f24d7943f5a40284ab6282482c6b70. 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/ES7891000703.
Mass in B Minor, BWV 232: Et in terra pax (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c963f92d4372274e7f526eb3b5890f8fbc24417f1a3a271439b775215245800. 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/ES7891000705.
Mass in B Minor, BWV 232: Gratias agimus tibi (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863d573a830d072b6574bc5f4d551b8cb664383e40dce06346a3788960c0b92. 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/ES7891000707.
Mass in B Minor, BWV 232: Domine Deus (Soprano 1, Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094e0cdea9d35ccf90486e391ecd9d22328f0b73eee65cea7ff122572ca50d1e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES7891000708.
Mass in B Minor, BWV 232: Qui tollis peccata mundi (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194927ab787dffea931b056e6dc02721af449edab100b6fec2499324f4e06980. 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/ES7891000709.
Herr, deine Augen sehen nach dem Glauben BWV 102: Chorale: Heut lebst du, heut bekehre dich - Seconda parte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f0c543de5f5f584456c46d0ebc2d8b45eb9c0175715875d60ad84c157587f. 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/NLK170400133.
Magnificat en ré majeur, BWV 243: II. Et exultavit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4059033dc0f9d6fd4c749266dc5139769fc338a913864a095c31bed927ae24. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM7281461716.
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
Herr Gott, dich loben wir BWV 16: Aria and Chorus: Laßt uns jauchzen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33dd90d45a9dd746205679d417b64905090068d665f4735ed94dca3ff6f1da9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLK170400118.
Mass in B Minor, BWV 232: Duet: Christe eleison (Soprano 1, Soprano 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e49cef5f5494f9069a24a08537b2afa42694e14521b81e86bfd9f0b3c7edca. 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/ES7891000702.
Mass in B Minor, BWV 232: Aria: Laudamus te (Soprano 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ed1f636c62a066c3fc90a4ee754373e6f7bd9791c8c5a2c12c3d38632ada99. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ES7891000706.
Mass in B Minor, BWV 232: Cum Sancto Spiritu (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5b2564ad6aef0ddc5c5991f04b08d95abc6e78c1830ec102f15223373cdfe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES7891000712.
Ich habe genung BWV 82: Aria: Ich habe genung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9533d48322b42604e0d50c9cc652ff1388339b43e79fc43c3fed24e54afada65. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLK170400001.
Mass in B Minor, BWV 232: Aria: Quoniam tu solus Sanctus (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ded2f702dd5aafab28c670ef1f9f8efded835aa2638eebc6daae8c77486f73. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ES7891000711.