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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8e8976061c3840532240a1a90ec198e0c3da3e0cee91cb1bc1e4c21a549a0a. 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/4d30e0b0-653d-43f6-8729-d212531fab6a.json and https://artists.proofprofile.net/proofs/artist/4d30e0b0-653d-43f6-8729-d212531fab6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeffc47589a288f3fde9a0019c2297bb8a2505c6775da903ed1c34d4ec56eec7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUXN22342551.
Chris Barber's Jazz Band Live In 1954 & 1955
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff8a6d0dc65ef31e0b9aa7f816078b5ba75f522bf38f9133e565da0a1f443da. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBF075600190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46647f0325bc1779a6249eee53606180934acf8cc411c45796c91f93dd5321ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBBBA5560641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870aad46680c63af5c3de52b12e335ba978e08f9c2b313565084109d64cd900. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUXN22349483.
The Radio Luxembourg Sessions: The 208 Rhythm Club, Vol. 1
Barber at the London Palladium (Live, Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f54b72502cd480bbf7eef596c5498fd7f570e0b29e9b10ec5836f979bf1d3a7. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/GBF080400125.
Chris Barber At The BBC Wireless Days 1961-62
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf15b4fe1157b686330d2627a3ee127bae5e8da6262a8a831cb7bc4e16423ff. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBAJE5600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb549d9a6da8ac8f3a84a27e41fb9afb881a2984e8dd0df183c351df0061c8dc1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBAJE5500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9831f0bfd0a0a402d9528ccafae861b1f0e21264cf582db02c1b2c66c54f14. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:05Z), 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/GBAJE5500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86aa2285e695936c420009d7a74c35e1092bb92369ad98205977a4601dda199. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:27Z), 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/GBAJE5700125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2cdb8c51cf3ecf15acc27d6e34b74612110b8a87af850d6b9a619788f8dd83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBAJE5700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b0c67aa8e72c27643d8c833b3ff462ae77690756379ba98b3d2f4beadff0dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBBAD0600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0cc5500909d09028e158d0e6250e37992058c9e68b61ccc710d8f4addc2e1b. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBBAD0600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad1a89a970a3113983aacc4d7c700504017f4184496a67d0900d4676cf61e26. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBBAD0600033.
Existentialism - Revival Jazz of the 60's Vol. 2
Existentialism - Revival Jazz of the 60's: Volume1
Chris Barber's Jazz Band, Vol. 2: Live Sessions
Chris Barber's Jazz Band, Vol. 1: Studio Sessions
Chris Barber's Jazz Band: Studio 102 Essentials
Hits From Golden Era Of Traditional Jazz
Great British Bands / Chris Barber & His Jazz Band, Volume 1 / Recordings 1954 - 1957
Great British Bands / Chris Barber & His Jazz Band, Volume 4 / Recordings 1954 - 1957
Great British Bands / Chris Barber & His Jazz Band, Volume 2 / Recordings 1954 - 1957
Great British Bands / Chris Barber & His Jazz Band, Volume 3 / Recordings 1954 - 1957
British Trad Jazz Scene of the 1950s and 1960s
Chris Barber and his Jazz Band: Live At The Festival Hall 1956
The Original Hit Recording - Petite Fleur
Chris Barber : Live at The Royal Festival Hall, London, December, 1956
Barber in Berlin:The Famous 1959 Deutschlandhalle Concert
Chris Barber and his Jazz Band : Band Box
Chris Barber: Fifty Traditional Jazz Favourites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff8951e458b634caa14ca7f436ff9e675ddfaf6a04b7e578197b09094be2eae. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBGQH1917754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29087c76cdb794316c5490ee234456e705b146271500f748d46ab6385ea8f940. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBGQH1917757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d4c22d6cfeee113579722237b8988a734f7482ab1e3bf385218c98a919ba73. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBGQH1917761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa5e77baae7630ffe65c847736c02118fab501ec16823f3c3144d5d4715b354. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBGQH1917767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39be66550f6517448ebe40e288186cdddee53b1d28795d5cbc5c2fdca3701248. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBGQH1917778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325cee7decf412e2ba495118cb7981b1b25a91768bbb4485f4624c318991f203. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBGQH1917786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9adcfc01280596d265d7b86640de0d0145e3f4f8b1c77cd7a6cee98bd77f17. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBGQH1917793.
Ottilie Patterson With Chris Barber's Jazz Band ‎– 1955 - 1958
Anthology: The Deluxe Collection (Remastered)
A Jazz Club Session with Chris Barber's Jazz Band & Ottilie Patterson (Live)
A Jazz Club Session with Chris Barber's Jazz Band & Ottilie Patterson: the Allan Gilmour Tapes (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5082c77d9ab4bf9502f1306a63552fcecfe6bb701d788be5afa77422cf739e5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUXN22288039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff9a5d7e627b582ed5885618e6a32f61ff55cfb372070cecbe5b11c6781d70. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUXN22295522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d35c77a7fa18a77d8f5a64e4edf9a2024bad83eb5fb41b924095e8a4ddd89d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUXN22295530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19df7e3a8457b61e69327fa0612734fbf18ef466f31e799d3003a7cfbda0754. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AUXN22295531.
Essential Classics, Vol. 374: Chris Barber'S Jazz Band