Maria Keohane (born 13 May 1971) is a Swedish soprano who has performed at festivals in Europe and made many recordings, especially of sacred music. Life and career Keohane was born in Manchester t
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b8e2aabe0f197545cc3a998bb35fbf0c109c2e637ebc8ef3416c5bdc6e49aa. 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/1fea5d1f-9f2a-487c-b242-8bcb9dd37e1e.json and https://artists.proofprofile.net/proofs/artist/1fea5d1f-9f2a-487c-b242-8bcb9dd37e1e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
In tempore Nativitas - Bach: Christmas Cantatas Nos. 63, 110 & 151
Membra Jesu Nostri, BuxWV 75, Ad pedes: Concerto "Ecce super montes pedes evangelizantis"
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ebb3099befdc4d849d7099a9a729ee192ee230ef3cd49ddef7435c947ad619. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944402 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910201 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad pedes: Aria "Salve mundi salutare"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b28d832dce8970c4802a70c2a96b68aa6482d478f96beae099800bfb360c0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944403 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910210 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75: Sonata [Ad pedes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3073dc8cfbe80302675166704d121e52374296d73f195a1810c3776eb092f5e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944401 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910203 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef476d0b5a4a47da9569743f64f313ad9cad7df0bcc8774d4419c6ba276b7b38. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910214 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbf9ab5df7a279cafd044cc21c66e27b43faffa852b7612c0db6f36cc162bd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910215 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75: Concerto [Ad pedes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fee2d34b36d9219a3d734133c27dabab0943cb9d0d0b0af8b74518e34221ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944406 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad pedes: Salve mundi salutare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899692aba446bb35f755a4f50d7642ad57afdfc90c3a99687cb916b67c951ec7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944407 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad genua: Concerto Ad ubera portabimini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a555f4ad7b292e65cf0ef88f59aefa581ac5af5ba7085aeba5a844f69991108. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944409 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910204 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910212 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad genua: Aria "Ut te quaeram mente pura"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a29bc9e8bd09d1b16d23dd45a72385a716eb68929eebd391d4c24920174b987. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944412 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75: Concerto [Ad genua]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bec692a864cf52e19c98d2f827be2dc42c412a6283cadd1e1ca418221974a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944413 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad manus: Concerto "Quid sunt plagae istae in medio manuum tuarum?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7fe731c02c724ce14d93c2d2062211113f797f519d367d7e8f5b8f5ddea272. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944415 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad faciem: Concerto "Amen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0900a45d7e1f0df85b87762f6f78d49b5372729bfc002ae566ad0ee3c6436. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944443 — a six-check JSON result.
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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910207 — a six-check JSON result.
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 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620910211 — a six-check JSON result.
Membra Jesu Nostri, BuxWV 75, Ad manus: Aria "Salve Jesu, pastor bone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab87648db321dc5c934166267e4905cf94af37d47a5fe9096dcd8dbb8431a37a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621944416 — a six-check JSON result.