Lowell Fillmore "Sly" Dunbar (10 May 1952 – 26 January 2026) was a Jamaican drummer, best known as one half of the prolific Jamaican rhythm section and reggae production duo Sly and Robbie. Life and
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 0xe657afe9348cd309bd6bc5360fc0cf7248130ab491fab18d4671734f0fb43dd9. 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/6038b113-db82-4bb3-8559-9bec323390f4.json and https://artists.proofprofile.net/proofs/artist/6038b113-db82-4bb3-8559-9bec323390f4.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 0xfd5ed756d990755939b37b2a8e576abb6f837f1e86369ad7be7ae7b0025c318a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR5U18200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd588f78794ffae13dba496c13aa5ac84270e6c8381b569068d8a8285152722d2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR5U18200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbb8d61ad3b6ab543ecff530be2b8e5c0744ba7bdb7485ae8ea14577372d0d6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR5U18200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eeb08c339fb7a2cae5f5e397ac2c4bf034dac8e7223e3114b113961025ddd8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:32:16Z), 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/FR5U18200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403511a66763c389ae9774e2808c1260353a8f413c662fe7876cfae262af0d83. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR5U18200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc187729a36d4ca759e476740c3cbf228264f06d0a4290a17bcef5586d1eb83db. 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/FR5U18200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943e850fb46e79988b3a3d2b3fee84d279f6fd250f52aa243c220d6faeeffe5d. 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/GBAAA0100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0c5a3e5a746c454812431962c278026f3e4ae8cc489a60afb3ae4713b6c811. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBAAA0100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943e850fb46e79988b3a3d2b3fee84d279f6fd250f52aa243c220d6faeeffe5d. 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/GBAAA0100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5f8bbdb97584311479146a07a09d2bd9e2bb8823cea185de7d10c07311d5d6. 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/GBAAA7900466.
Wanted Reggae: From Diggers To Music Lovers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f9c378c136e89306ddb890ababd53bdfb4ffa54b96cb70d006f5e869f9465. 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/FR6F31719790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c396980f8724f89121dfde57ca1dae9e87f353ea4930303f29fbf302fa657. 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/USIR18190012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2e54faa35abc7fe6bda5df0e8af839bfe024bb98335c9ed06683f95517f28a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USTE10446913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734721d157d3e8ce11466db190d0938a9120b95cf9a6b3e8f91febb909f23238. 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/FRZ010303390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca73e069c4c9415f7bb2380e77830657cdcf6b1ee0724ddf69ff0b5bd888a34. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZWDD2421274.
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 0x6b6b6c5e8913ea211498055fd0eb10f3bfc9ab18c096a5eaf48f3f79dfc1ec87. 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/FR5U17700928.