Don Drummond (12 March 1934Other sources, such as Larkin, Colin (2005): The Virgin Encyclopedia of Reggae (Virgin. ), state his year of birth as 1943. – 6 May 1969) was a Jamaican ska trombonist and c
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 0x08738d7f9b8860fe3d12d71ec7897839e7160b4d9f8ef6de85051e2aa5298094. 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/f24aad3c-a71b-411c-9289-2ac54a9a760c.json and https://artists.proofprofile.net/proofs/artist/f24aad3c-a71b-411c-9289-2ac54a9a760c.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 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 0x141475f1c18206892ca7ed795143bd47d1939bca40cc1fcc06cbabcdf1f5a76d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/UK8WW2100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fa95266ebad4c430b233605bb0f6b466f0dcf335e4e10836bc9c86f9ad1648. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBAJE6300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b77c8e4c36b743e0f574fca7519dced9f02579eb5f87079a2e19bb45421e12. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBAJE6400346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33528f10e55ebfc717e279a1356f48913ac5d8352c157141bf3837b192d3995e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBAJE6300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4501a0122ca03eb3463439a7654e46074f80dfbef2df1d10180c7a59f085674c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBAJE6400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86f005ddcf83e67afa3d30915f6859034ae77ff9882e02185f4a2a267f896b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBAJE6400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6243c8e0f8815c18fad20a489c2e9887aa6939d0c8f3596236127a6af86262be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBQXA1110510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc927a49d4839d8c55f8234f29783bf0ce32a89c17ada9d0a0b319c2bbee63. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QM4TW1586904.
One Beer, One Scotch, One Burbon (Take 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c170b16ba6f46bf3711191c3e4c9473a1806b484b26d3092dea8caff1581536. 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/GBHWT0500172.
Studio One Ska Fever! More Ska Sounds from Sir Coxsone's Downbeat 1962-65
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d2ff8f1b0aace5830a34b7412fb4ac7018fd6bb503f7edbb7cfaef05e24d7a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JMA020600276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b8983f665f9b359e62a3dc84ef3ebcc180332c0b2a968b463d78fc46d76e63. 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/GBHWT0500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464137260e3383dc4856516b51744c380a742dbc6cbd06696ad36741c5d80c3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USVPR9805343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fc122bf78c4fe0805d058e6d9f281b43845ca58f8ab0eb5e756d54df6f0a84. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USVPR9805351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fc122bf78c4fe0805d058e6d9f281b43845ca58f8ab0eb5e756d54df6f0a84. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USVPR9805351.
This is Dub - Rare Jamaican Ska & Reggae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e68dc158515fa831d16df0f834bd83af9dd4fef86138c9991f8b7b560b5c6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USA371235718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85099073b300f15c5da86d55f50bbbaa4ff91819973105d6eb5e820e0bfa7ef. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91529122.