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 0xc12465e5a507fc90749758d84d631d92d7f5b71818b5462dc7de9d34502c58fe. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/787ed630-9c15-460d-8a5c-88d13fa51df5.json and https://artists.proofprofile.net/proofs/artist/787ed630-9c15-460d-8a5c-88d13fa51df5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Proprium Primae Missae in Nativitate: Introitus: Dominus dixit
Choralschola des Klosters Maria Einsiedeln
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 0xf9faa7684c16bd28585ec1f3617f73aac12e39546983d2a03e8950be06f494bc. 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/DEF057203951.
Proprium Primae Missae in Nativitate: Graduale: Tecum principium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9b50cf54a7f760028db69a80f58b35ad6e83d71e92d6bf9420cda32194a540. 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/DEF057203952.
Proprium Primae Missae in Nativitate: Offertorium: Laetentur caeli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f870b940e210368a0227e9d9fa203db74bc33396134984fb6c6b9bab6cb8e. 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/DEF057203954.
Proprium Primae Missae in Nativitate: Communio: In splendoribus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f3c2a34fbfcd0c098b9f05034c5327f0a106c1631cf7771dd0dee8347d76ad. 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/DEF057203955.
Proprium Missae in Epiphania Domini: Introitus: Ecce advenit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266f457573f71d6a23298d835a699a18a5f9bf47e2e08d1f67c4f08eeaf7023c. 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/DEF057203961.
Proprium Missae in Epiphania Domini: Graduale: Omnes de Saba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23530b2864bb4904f1092c4541c7316d1034bd94ee0792d2e2ff02ec4b923d59. 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/DEF057203962.
Proprium Missae in Epiphania Domini: Alleluia: Vidimus stellam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce4427e73bfa835f6f9e0dd43c0fd77c54371f2157a80a03e732499eb1f9a9d. 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/DEF057203963.
Proprium Missae in Epiphania Domini: Offertorium: Reges Tharsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1fb7726a2d8e2c2119ca9d04f9fbdeb25324b528392d47062ce0878d5893e1. 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/DEF057203964.
Proprium Missae in Epiphania Domini: Communio: Vidimus stellam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbf6091558d66ac8127c8e975454456480e9c1ac6eb49b173ca1659f41a4e52. 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/DEF057203965.
Proprium Missae in Ascensione Domini: Introitus: Viri Galilaei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a09071024e0a8d9eda92f65e0a8b91a41ca7eb71fd65d66e6d504c0ee3e2190. 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/DEF057203981.
Proprium Missae in Ascensione Domini: Alleluia I: Ascendit Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c1e0961580a4a746d051d42438f57567f5f161a5158f2a5161ec4471e4063. 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/DEF057203982.
Proprium Missae in Ascensione Domini: Alleluia II: Dominus in Sina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db167a7a2d8445381bd32800265071b24b43acdfb1790e6258ac5517f054fe9. 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/DEF057203983.
Proprium Missae in Ascensione Domini: Offertorium: Ascendit Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53f0565baf66d7d4f74a3310195970bf12bd3bf249b1870b042ae90f89e2b5f. 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/DEF057203984.
Proprium Missae in Ascensione Domini: Communio: Psallite Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5d8ebe7b70faf4acd58bc780d2d7676f6ebdd1276bb89ab4195cee443c5f4. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEF057203985.
Proprium Missae in Dominica Resurrectionis: Introitus: Resurrexi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cee169d204a312edca3b5bf3738ef3e26066764394519a1f2986cad7bce6868. 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/DEF057203971.
Proprium Missae in Dominica Resurrectionis: Graduale: Haec dies · Confitemini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a681534893df1d9de8d56297a920a6404738f9cf5a4945827c79a4448fb349. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEF057203972.
Proprium Missae in Dominica Resurrectionis: Alleluia: Pascha nostrum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0507839d8bc25a487f7891069b02a3352ef4c7fea7b35f4fc7b8e3167f29423. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEF057203973.
Proprium Missae in Dominica Resurrectionis: Sequentia: Victimae paschali laudes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937b0962eebdf898360f16f69218dfb67b146b1cfbf98cf3028c361cd21fab5c. 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/DEF057203974.
Proprium Missae in Dominica Resurrectionis: Communio: Pascha nostrum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce17685d7cb4e8f2e08b6879268b230461498808f7a024bd901b34087af9b7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEF057203976.