Matthew White or Matt White is the name of: Entertainment Matthew White (countertenor) (born 1973), Canadian opera singer Matt White (musician) (born 1980), American singer-songwriter Matthew E. W
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 0x3b3922a8aeb519d6588ccb34aaa61d1155a051c84f7e660072f6075a6790fec2. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe7bf1f0-df33-4175-8ce6-13f94c9dbebc.json and https://artists.proofprofile.net/proofs/artist/fe7bf1f0-df33-4175-8ce6-13f94c9dbebc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Caldara: La Conversione di Clodoveo, Rè di Francia
Bach, J.S.: Cantates de la Nativité Vol. 4 BWV 61, BWV 122, BWV 123, BWV 182
Cantata Liebster Immanuel, herzog der frommen, BWV 123: Liebster Immanuel, Herzog der Frommen (Chorus)
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 0x35bea84fc3e37111c8f0ca32f34b458b9fddc73aedd95f71e51f21362eb7f943. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ720840313 — a six-check JSON result.
The Battle of Killiecrankie: Love & War Songs in Free Scotland
The Braes O'Killiecrankie (Arr. by Sylvain Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f7c58aa22327d94d4044e67add90369f3f7a684f66bac427e213afc3eadfbc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CAJ720751018 — a six-check JSON result.
Here The Deities Approve (Henry Purcell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c7b6e556f5a027852a154426ba09ddc5c38b4606fc72a5bdc1545552401cca. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560638641 — a six-check JSON result.
Bach, J.S.: Cantates Marie De Nazareth Vol. 3 BWV 1, 82, 147
Italian Oratorios: Vivaldi, Scarlatti, Caldara, Zelenka
Sonata in D minor for 2 violins and continuo, Op. 1 No. 12, RV63 La Follia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110c325df42a682489343fa049318e26aeb4e1bbd4b58f4e6bf40402ea162f03. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBUM70904266 — a six-check JSON result.
Saint John Passion, BWV 245, Pt. I: "Herr, unser Herrscher" (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac500092dfadfe170865c2ad2f4fbb95aae86005d84897b2ab2b7546a13f07. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX1104167 — a six-check JSON result.
Mass in B Minor, BWV 232: II. Gloria: No. 7, Qui sedes ad dexteram Patris (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc886726ab018b552fd9547b386a677bbc26c8586e86d1b05b780ed99be3147. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA460912591 — a six-check JSON result.
Mass in B Minor, BWV 232: III. Symbolum Nicenum, Credo: No. 3, Et in unum Dominum (Soprano 1, Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5f10912df9c98f81af99214d4c21d91807477601b098b77cbc3e8c84106444. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA460912596 — a six-check JSON result.
Mass in B Minor, BWV 232: V. Osanna, Benedictus, Agnus Dei et Dona nobis pacem: No. 5, Agnus Dei (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde197abd3083b6b3ec947373b1c7ed84426f1770294c735626d33cdb535dd69. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLA460912607 — a six-check JSON result.