Sylford Walker (born c. 1955)61 years old in December 2016 – Campbell (2016) is a Jamaican reggae singer who first recorded in the mid-1970s and, with reissues renewing interest in him, returned to re
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 0xbbabf6eb225c2b22e59441bf3565f33bc3ff788a0a5d2c6780fac199595bc0f6. 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/8924dbbc-6482-4417-848b-766ac78d434f.json and https://artists.proofprofile.net/proofs/artist/8924dbbc-6482-4417-848b-766ac78d434f.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 0x17f8be39a5deee206f90f5f59bbeae43aff7381fdb2723ca4e4595b519fedf6f. 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/USVPR1600908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c64274e34120db7f833b9f48b7dc2ee9c73f55801ed6c7320998b63c42d8607. 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/USVPR1600912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd1f1c22052c4128654ac1e19e09d643fac8d4b3897c1218538d417e4eb6e9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USVPR1601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5a603f4940464640f03e56bba65722de5f6827698809b83ec0f928e16e3d43. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USVPR1601005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3750f0839113a5336b5e1cd9fa7d5cfabdaaeeb28f620c430544f4f60c3df5e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCABI1294577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b80c5c67df2b1b72d71001a20e25a2fe7f755069fec5be53a89eb729d97f9da. 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/TCABI1294587.
White Collar Criminals/Dub of Correction
Burn Babylon & Don't Trouble Natty Dread. (feat. Trinity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb82738022b9c7dc66e62e626f65f7113e06b6a0ae6abc6a2a946fa2c3199873. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH2082279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf252199d2cfbe522bfef4b4874fe98df1315097c82ba74ebe104ce35a65d6952. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX872341121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb327d97f78c23338a08a70f5d10a868e3efff6299d5d241dbf1c30a21de6505d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FRX872341122.
Lee "Scratch" Perry & Friends: Back to the Ark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f0ee5722e7abf83a7f50aadbf8df4d175241b93d3143da021f34ba32545e2. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/FRIDO2010901.
Reggae Anthology: Joe Gibbs - Scorchers From The Mighty Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77058308a385efa01055a757207241b280012315b18a3eaedeffa2a0e0cfab5c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVPR0814074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ebbb31c1565edf89ebf27abe12cea0b9eb23e7a6821889e7738fb24363ae2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVPR0814079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ebbb31c1565edf89ebf27abe12cea0b9eb23e7a6821889e7738fb24363ae2. 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/USVPR0814079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cf26a52cc89a287fe6a00e49910dbdb441b0644e1c4b17d47fe6225e902a3a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US29V1131801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8aa89ad4e3bdb9f48fc171c58322f0e043450e3bcf0974502d8eaa6838db6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US29V1131806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb60c85ee11dedb76f8dc5e4229feabb81abf05bf8417be99d66da33fcf2827. 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/USVPR1900141.