Alphonso "Al" Campbell (born 31 August 1954) is a Jamaican reggae singer active since the late 1960s. Biography Born in Kingston, Jamaica, Campbell's singing career began in church, where his father
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 0x385f5560891bd83eaf618887898b8b24f02aa365f1206d2b9156b0ae37376389. 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/dd57df11-fbd3-4467-b456-9ec0da4dd6f9.json and https://artists.proofprofile.net/proofs/artist/dd57df11-fbd3-4467-b456-9ec0da4dd6f9.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 0x8aac216bac60aaf3056683f82bcc73faff087d460442eaee5e857fdc2433cd20. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBFDB1700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b49470d901f72491cb84fa8b76fc378d16dad14f6ebd769543fb174faf30e82. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBFDB1700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf102df7fe5107c4e763f58c0575aad203435a45d6f55aaaa70625d572de6f6. 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/GBFDB1700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69707db08e1d1e32675fa4da46089f7a6738e6247ffeb7a912bd1f5f45dd9a5e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBFDB1700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc91b75a9ecfae7751c9b5c8e00304c1da23779391db6924d97bcfe4c6e809e. 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/GBFDB1700260.
Two Timer / Look Who Is Laughing - Single
Let the Word Be Love / Lover to Lover - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a04c58d715df69c98efa22cd3c60903c0106462bef61009e1cd20c102cd117. 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/GBQX41200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5531a3334f1b39e9a4b46c6316490a60946a433d9e45048c9bf424d91045014. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBQX41200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc5535d5de0a77e972480fcddd137824b544d6d0f38cf04f7b5801244f64034. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBCMZ0375864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e7a06943a4ebb3b9609321b9099d75de87af08d37fe4e2b30ffac8e52e3c9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X1920528.
Reggae Dancehall Riddim: Run Down The World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe494e30e9a21b371b573f6b91fe751de6d94cc70fd4991a2d08dbdf055716d54. 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/USVPR0107217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ce2243a22eb597b89807aaf9c66e85a6f346b0d7d3258184d3772ca4852dd3. 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/FR2X42334679.
Reggae Anthology: Henry "Junjo" Lawes - Volcano Eruption
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2c01de45f52442d006bd38e2115f1e72790c50863f8b7980eb277b441c6aa6. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USVPR0916289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1451888b71974fa5a9743dc49b05c877a0206a875c0bfeac8557358b7c75479. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USQY51737219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c3d89e585a4fa3fa8835e48142dd99ed14d4d3683e43633aea21bb20efb914. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBBTV0700715.
George Phang: Power House Selector's Choice Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487101f88a0939682a3793e499facc5e9896f3155dc04b2721d7f4a805ba7b19. 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/USVPR0814421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e8e7d46c77f2668225481420cee00b93a47eb6f191f9ad1e46a6aa66f2adfc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JMA020602317.