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 0xfb046abc8e11e47c7baa60c5333cd9639d11d831f6e77a98426a700133a82964. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73084fb9-a5a8-47d5-a919-77f71823fe00.json and https://artists.proofprofile.net/proofs/artist/73084fb9-a5a8-47d5-a919-77f71823fe00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dixit Dominus, HWV 232: I. Dixit Dominus
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 0x114881e07893ab13bb7ce7ada780f7c6e14f50c4d2a18a2c2d2fcabf05a2d7cf. 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/DEF058703341.
Dixit Dominus, HWV 232: II. Virgam virtutis tuae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c48b665d6db114a64826476df493fa000018f3feeb0c576cf8cc30856f80367. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058703342.
Dixit Dominus, HWV 232: III. Tecum principium in die virtutis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551b8f31ba38c88ec36a57097b5c14c6fc0ee2e945222b9d47a47067672d389b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058703343.
Dixit Dominus, HWV 232: IV. Juravit Dominus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cbc1a5f38c2569937d014c88eb1f03017b7f71986cba02d14886df9cac358b. 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/DEF058703344.
Dixit Dominus, HWV 232: V. Tu es sacerdos in aeternum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9e84f29ead7be985bd9c20dc440d6fffca290be2d80981ccf77431a1d15543. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058703345.
Dixit Dominus, HWV 232: VIa. Dominus a dextris tuis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320e97253b3f324def1d677bbce3f8e55deb1c76cfb33811dcbcf0061630765. 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/DEF058703346.
Dixit Dominus, HWV 232: VIb. Judicabit in nationibus – VIc. Conquassabit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ebe827fbcd8df572bbf113c3ba4251639b2a0c3e752e4417ecf33e4ad600d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058703347.
Dixit Dominus, HWV 232: VII. De torrente in via bibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ef269c81f0cf8eaf25bcf249805296fc44ad45a6aa5501341b8590172244b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058703348.
Dixit Dominus, HWV 232: VIII. Gloria Patri, et Filio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9be4ac9b66f99e7a5051e5333ed697b627977f6f49b7108006ce934186ae9b. 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/DEF058703349.
Nisi Dominus, Psalm 126 (127) HWV 238: 1. Nisi Dominus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f9151e1e67134b136480b4e639c76334d6b8a9dd689c0f1c8d6f89a1fbf76f. 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/DEF058703351.
Nisi Dominus, Psalm 126 (127) HWV 238: 2. Vanum est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591bf3e462f8441aeed224e7553cb8b0939a2ceb5f17b84c8fbcc41622e146b7. 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/DEF058703352.
Nisi Dominus, Psalm 126 (127) HWV 238: 3. Cum dederit dilectis suis somnum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2535af6fd00947cb11c8ef44533599147b8bde0d052a1d3b280ae8cf22d88aa1. 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/DEF058703353.
Nisi Dominus, Psalm 126 (127) HWV 238: 4. Sicut sagittae in manu potentis (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d93d568f4e92c5d92fc737097332fccc31a7d8e40dcf163c13238a568f287fe. 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/DEF058703354.
Nisi Dominus, Psalm 126 (127) HWV 238: 5. Beatus vir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b54e5a868841a20d4e3bc495270aa45fa69fbe895afdce3ecc28c2689b34f. 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/DEF058703355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cbbcd0aaeeda64066f18e78043a554138250d32a38f36b58384d7664c047a9. 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/DEF058703361.
Vanessa, Act I Scene 1: No, I cannot understand why… (Vanessa, Erika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57fe0f2f1b0be90255a7728333645e2244a02106e41ff95f27fc7a47a05de60. 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/GBLWD0414303.
Vanessa, Act I Scene 1: Yes, I believe I shall love you (Anatol, Vanessa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebef93589101e7ae6aca16e1f54fa18dfb1f6aeee9580f06ee5b772e03fb76a. 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/GBLWD0414307.
Vanessa, Act I Scene 2: And then? (Baroness, Erika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd863f5bca58da490ed79dc45435ebf27253fb3c2054cbf59871f745025569f. 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/GBLWD0414309.
Vanessa, Act I Scene 2: Outside this house the world has changed (Anatol, Erika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a58c2bed635e61a947df084d2d8b87bf1da9f94c5c35499ca744a9be5ee0153. 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/GBLWD0414315.
Vanessa, Act I Scene 1: Potage crème aux perles (Erika, Nicholas, Vanessa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ae7d36e2e71815cea75f97e5747e9ec759c05d2c05585235cc61452257bf1e. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBLWD0414302.
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
Johannes-Passion, BWV 245, Pt. 1: No. 12, Recit. Und Hannas sandte ihn gebunden (Evangelist, Servant, Peter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a332bcb95481039cc3861bd23ec50b54072aba4133a13d15a3a08b822d6628. 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/DEF058630030.
Johannes-Passion, BWV 245, Pt. 1: No. 10, Recit. Derselbige Jünger (Evangelist, Maid, Peter, Jesus, Servant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9fd98363ee32dbf04605332fa77b9a31608b47c3aa8b0466f33eba535e53fa. 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/DEF058630029.
Mozart: Die Zauberflöte, K. 620, Act 1 Scene 13: "Die Weisheitslehre dieser Knaben … O ew’ge Nacht!" (Tamino, Sprecher, Priester)
Sir Roger Norrington/London Classical Players/Anthony Rolfe Johnson/Andreas Schmidt/Dawn Upshaw/Guy de Mey/Beverley Hoch/Olaf Bär/Catherine Denley/Catherine Pierard/Cornelius Hauptmann/Nancy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ead786a04f955bd600fb90d6a4c55c5fc6b07b1fc791639021545cd1b73c9b. 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/GBAYC9001007.