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 0x48677a75e47a608deed66909d79c38c5336868684eada896a87f99aad3175ac6. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb0fa1ec-9a73-4619-ba4e-892e8a0b3abc.json and https://artists.proofprofile.net/proofs/artist/fb0fa1ec-9a73-4619-ba4e-892e8a0b3abc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Three of a Kind: Sandy Brown, Cy Laurie, Humphrey Lyttelton
British Traditional Jazz, a Potted History (1936-1963)
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 0x9dbac600d26afe2be27fade0f13d5011b6452986c2ac000ccbc1a62c85e3c580. 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/GBBAD1200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9798d50d009f7a1f0ea02517239736d2107aeac668142c1d020b17ae3d3970. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBBAD1200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce43c744dfb982f5dd3a80f9d953936e04109ace01564fe479989fd11dc73b. 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/GBBAD0000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955b9ee407516c4b9dc5f83915d08dccc2345eeee7954ae9ac35fc1939f6015. 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/GBBAD0000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afd148221d9de576593326398be4a07565a9ac6438d6754bde4431e671c4d9f. 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/USXTN1089857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc825ccf0cbdbae3b2b40be466422c52344d6545e61ee8b6ba5ee23e56f0e021. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USXTN1089860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7b7c58f0def338093413e2fdbc13e51fcd763985e2bcc1e1e053025426e50. 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/USXTN1089866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b824b7e7d53740d6175781c286784f7e5a527f2e40b56ec4a469b201586aa0f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USXTN1089873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2613c2b0d7138c4db2222a7a22e340d1ba37972a958a29e17efe01a04e9e5. 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/USXTN1089874.
Too Hot: The Best of Mainstream British Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27b4eb6aeeb854b1c9240843f59082d0909b5112aa4f929d56cf7c5e1f01867. 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/GBAJE5700142.
The Golden Years Of Revival Jazz, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee07ac4d46ee41c18645e96db692a9db7f3caaee53c913d53f6b9f9d884d94. 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/DKEFA9905605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed5b42d800862d11d4520495482185300e8157c333536aafa50c9c0b1522fbd. 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/AUXN21945238.
The Al Fairweather Collection 1953 - 1957
Great British Jazz - Just About As Good As It Gets!
The Golden Years Of Revival Jazz, Vol. 10
Simply The Best British Jazz From The 1950s Volume 2
The Golden Years Of Revival Jazz, Vol. 5
Traditional Jazz in London & the British Isles
The Golden Years Of Revival Jazz, Vol. 8
The Great Revival Traditional Jazz 1949-58, Vol. 3
The Golden Years of Revival Jazz Sampler
British Traditional Jazz: At a Tangent, Vol. 9 (The Mainstream Bands)
The Best Of British Jazz From The BBC Jazz Club - Volume 2
Keep Calm and Listen to Jazz Britannia, Pt. 1
Playlist: Jazz - Background, Coffee Bar, Unwind, Evening (Remastered 2014)
Playlist: Jazz - Relax, Unwind, Study, Chill (Remastered 2014)