John Alexander Brymer OBE (27 January 191516 September 2003) was an English clarinettist and saxophonist. The Times called him "the leading clarinettist of his generation, perhaps of the century".Goo
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 0x431d8fe820a820da7d6bb66a0e4af7b85d02a6bb1f55056f0842a6201142524a. 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/c66e0efa-2e57-4995-822f-96643b78c379.json and https://artists.proofprofile.net/proofs/artist/c66e0efa-2e57-4995-822f-96643b78c379.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Clarinet Concerto & Piano Concerto No. 25
Mozart: Clarinet Concerto in A Major, K. 622: II. Adagio
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 0xfd65f4320e37c6cdd57ae1d8191dd2eb244df0f6c7a596e4872ccea7b459936d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC9006790.
Serenade in B flat, K.361 "Gran partita": 1. Largo - Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da91dea825bf66925a6b9409aabb822e6b9e18580c765dfae024a9ddaace64c. 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/GBF076210391.
Serenade in C minor, K.388 "Nacht Musik": 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb28d389801679f25e34b3bf4e2a8ec42dce3323714172ea66962084a83c0f6. 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/GBF076210771.
Serenade in B flat, K.361 "Gran partita": 3. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e6e2f5c365cf56eee94b55f77c54166555f3c25b88cd18984d87fa5dde278. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBF076210393.
Serenade in B flat, K.361 "Gran partita": 6. Thema con 6 variazioni (Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d30b0ff0e68d889eef27f7efaefecab0ecf916157ea6a7425c531a8f1faee98. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBF076210396.
Serenade in B flat, K.361 "Gran partita": 7. Finale (Molto allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc08b6dc5dfe592750fb9ff23792202e993cadd9cc92ab7940404cc91e706fb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBF076210397.
Mozart: Clarinet Quintet in A; Schubert: Piano Quintet in A - "Trout"
Mozart: Mozart: Concerto For Clarinet And Orchestra In A (K. 622)
Out Of Africa (Music From The Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e23dfba8e1c14e0f01e0c98d92ff9a205d3577ca971ea0dcabd61f96eaf128. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMC18519351.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d2de214c9fe20eef7840877880e2dd3911246330c5e8847aa957ca5c6bdeb0. 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/GBAYC9102037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cdbd47c4634c10a942440684bf89ce0c720d8f0cc1a44e92eadb36a7ec4575. 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/GBAYC0101143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cdbd47c4634c10a942440684bf89ce0c720d8f0cc1a44e92eadb36a7ec4575. 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/GBAYC0101143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd65f4320e37c6cdd57ae1d8191dd2eb244df0f6c7a596e4872ccea7b459936d. 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/GBAYC9006790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fd7f57b46679477f7daa76b5e5c855c045fce77926f7918c92c59f6d5037b. 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/NLA507100273.
Mozart: Concerto For Clarinet And Orchestra In A (K. 622)
Academy of St. Martin in the Fields Chamber Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e23dfba8e1c14e0f01e0c98d92ff9a205d3577ca971ea0dcabd61f96eaf128. 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/USMC18519351.
Adagio for Clarinet & Strings in D-Flat Major (formerly attrib. Wagner)
Marriner & The Academy - 20th Century Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d090c379e40e0848d4b0515b22b53ae6fcb9ba76e0ab535ab42743384b005bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBF076811700.