250px|thumb Bryden Thomson (16 July 1928 – 14 November 1991) was a Scottish conductor, remembered especially for his championship of British and Scandinavian composers. His recordings include influent
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 0x4a8da05b1c52ad40dd6234311ceccf00056e82a9028045c81afc4e8b0b43f979. 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/bf8d01e8-138e-4921-9530-0d89952f6baf.json and https://artists.proofprofile.net/proofs/artist/bf8d01e8-138e-4921-9530-0d89952f6baf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vaughan Williams: Symphony No. 4 & Concerto Accademico
Celebrating 50 Years Devoted to British Music, Set 2: Gordon Jacob to William Wordsworth
125 Years of the Royal Scottish National Orchestra
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 0xe1ac5be896a6a38a5d82544c4747c10209121973c06d45b59e1280434042e17b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLWD9300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d90af07cd159ec8329cf12ffc850e52dbac493c79877df7a7100fb5ae65bc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9300602.
A John Field Suite: III. Slow Waltz, "Remembrance"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca02e23e5b5221e9d7329c279b2e77d48d46da562543da449095b77604a93c6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD9300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89aaf603f4d37ba533f24127476f3ed7bdafb226e0d146ce929bcc26aa53067. 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/GBLWD9300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6689ac6cab7622ca9b1b4b9deda07ad9d1ef5e274c3ec0d741ea4eebb908318e. 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/GBLWD9101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb99b6e5ad9ec14c21b4ff9d134ca7c33c508a3010f3f7221e0f5dacb97c38ce. 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/GBLWD8401704.
Mozart: Piano Concerto No. 21 in C Major, K. 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101c16b1e20a9428886c7838e6ac791e8f426286b3983d11a32c76cdf1f5709f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8700529.
Piano Concerto No. 21 in C Major, K. 467: II. Andante 'Elvira Madigan'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c392c74031330df01071096ccec3fa16ae85207b6c6031b71ac564df464fcb4. 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/GBAYD8700389.
Mozart: Piano Concerto No. 21 in C Major, K. 467 'Elvira Madigan': II. Andante (Excerpt)
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c392c74031330df01071096ccec3fa16ae85207b6c6031b71ac564df464fcb4. 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/GBAYD8700389.
Piano Concerto No. 21 in C Major, K. 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101c16b1e20a9428886c7838e6ac791e8f426286b3983d11a32c76cdf1f5709f. 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/GBAYD8700529.
Piano Concerto No. 21 in C Major, K. 467 'Elvira Madigan': II. Andante (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c392c74031330df01071096ccec3fa16ae85207b6c6031b71ac564df464fcb4. 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/GBAYD8700389.
Soft Classical Music for Studying and Reading
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101c16b1e20a9428886c7838e6ac791e8f426286b3983d11a32c76cdf1f5709f. 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/GBAYD8700529.