Donovan Letts (born 10 January 1956) is a British film director, disc jockey (DJ) and musician. Letts first came to prominence as the videographer for the Clash, directing several of their music video
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 0xb1e20bfc1c0657bbe67642c9b9ecffa9754f3ff31f3822122d6802d382ff1684. 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/32d34b64-9461-4f7c-83da-d4f7d9c0b2dc.json and https://artists.proofprofile.net/proofs/artist/32d34b64-9461-4f7c-83da-d4f7d9c0b2dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Late Night Tales Presents Version Excursion Selected by Don Letts
Hercules - North Street West 'Late Night Tales' Dub
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 0xd510771faa4acc5234c5fd41ed0c9d627c2484204964964b4e9504ff6533135f. 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/GB5EM2101944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720fb03d7e7e4b04de60f3c4b0f4e3f7e0497609a62a255df840da4fa41ff7c9. 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/UKB3R2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e41b4d873cf1c9caf61ea144a059a51b68802e32f38e6e757f45f9573970266. 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/GB5EM2101948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb5ce54749fbaf4fb6514fd78f00527fa608ee362d340a49967be5c6840982e. 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/UKEUR1600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561e1423c2a78a791b8322a28fb93638eb7761345bc175ef6e0b651248a7d7c1. 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/DEH262100203.
Love Will Tear Us Apart - Full Vocal Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abacd480f9582f49faee930da75c51e9d15f2e5c943b32937f0c980fab6d009. 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/GB5EM2101945.
All I Do is Think About You - Far East Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f3323806cb21d352d7f7bbf21e431918b3bfb94d98e582cc0da0281de352e. 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/GBEUE1600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2dbb57179ddd017dc980d261368697e4ef278859b134ea358f4b35e0d1beb2. 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/UKLHS1700001.
You'll Never Find Another Love Like Mine - Mad Professor Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2eb111ea1544d04e69765ea76c0da778fd55686cc6669fd63ee96b8420fb81. 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/GB5KW2101715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d45e1acb5e185cb58df04ca75d21ce9273e71d9fbd123179dd555a58fa58167. 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/GX2BM2100004.
(I Can't Get Enough of) That Reggae Stuff
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b14cef8eff672c081af00f840c453acdc71d6fb8ac6712a0c688ecc0707490. 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/GB5EM2101949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91771f34d3a82c20284d39a3b41eb1c470526d5e1175cf9598f771cb9cac5c2. 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/US4CL2010077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f4576b4238336c3e51ab3870555fc8b7ad1a079936c50fd4bf1fe9d9de4bed. 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/GBAYE9800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc21bb177bb823a00d2cc3d12cf48ca87252f42b9c2561f791777e997f3f53b9. 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/FR5R00906075.
Ain't No Sunshine - Space Dub Mix - Exclusive Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315358adf6be283dc28e440dd64afb0a1ed296a52c8ec40b917e7ad5bbc23bd6. 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/JPR771300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff346deac4ff6d760ad354e1d09a4276ea3e91c8aeba53ebd4bedd8bff9a9ce2. 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/FR5U10901337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b01f0afd18a0a5b6d2b7810e57222ff5c46cdef8f1c2f3b4e1cfc17903f54. 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/GB5EM2101950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0745854c2ad85dd115cb981475ee0c1c2246ed48951982894529e269c51ea6. 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/GB5EM2101946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511c21c304330a38b1859a6fb173fcc270c347a0d486bcd44725f4055b409fd7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH261913702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d900f621899422ede8bf92fe48f134e14ab46d5d6afbb7fd067a9a780cf7a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US4CL0910008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed6db8fab10afbd86e555cc5e04c17de43d1a1a8ebc4bc17822917c3b3ae9ea. 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/GB5EM2101947.
Relafica Negra En Tiempo De Siembra (Gaudi & Don Letts Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445bf109927d7aeb589b9febcc2e4e952999994a44fb1c425875e7cea8194a8b. 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/FR59R2229801.
Relafica Negra En Tiempo De Siembra - Gaudi & Don Letts Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94d397cfbf09554e734e3bab3b84d359cd4dc58d3cebed7be46e5724128196. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES7002255801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561ae1e825b56bdb305823fcaf4766dd6e8ed7f8f91856664fa945cc1534594. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/GBCEJ2200213.