Barry Biggs (born 1946 St. Andrew, Jamaica) is a Jamaican reggae singer, best known in the UK for his cover of the Blue Magic song, "Sideshow", which got to number 3 in the UK Singles Chart in 1977.
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 0x2ecc0aa6544915f22abb65c585937271dfcccc560fa5783336a425c20c303690. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6f797ea-8a38-4fe9-8e6d-ad8c662d753c.json and https://artists.proofprofile.net/proofs/artist/c6f797ea-8a38-4fe9-8e6d-ad8c662d753c.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 0xd4fb87d5fa03e9b7464347236c771d55c9d0a712d39f6ba52f849ce1358dfc30. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USVPR1600720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51608b2ea3e76e6433559f1efdde836207fc9df71651fbb00f508179757b1280. 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/USVPR0006474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d35f284e74af3b2d7fcffd48f60a392794f0daa747fa5e17d88d813fe714d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USVPR0006482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ddd5edd4838ec1a4c923b8083c7627e3e042b6af8b40a1b19f34d74e6ba39. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USVPR0006484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c154d12cad7652b2156ac8aca1826532c9c5feed33be6494ef2c5a348fd64. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBCMZ0375434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf485b48526ff07098f56b86e22dc690dcda49df4068d409e677e5582874412. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:07:27Z), 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/GBCMZ0375457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599245832b5167b59fdd4407fbab26f8956a94c5190eaf9e6046036eea1406bd. 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/GBCMZ0375442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf1a2be7c817f0d379afe108e01d15e9870dc32b9af7d52acbcf4874e4531d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBCMZ0375455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d5d6a657baa21525fa0b8fa6b869cd9b903e48b6e3b0ca1c6a674a17419b3b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USX9P1157697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468cb288f7ca682153783cc12df60bc1937522448dc51aa3b5ade6ca1f25dc72. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USX9P1154945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76288f3f24f2034c2d860ab121c5639e07a05e49653f2a64c7952551bda9e22. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USX9P1154943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd1f190778ecbefe0c6e377b0daa1488eb3ce2f84a8ee63ea023e373121c755. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:05Z), 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/GBCMZ0375439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28085818e81b6aadd233493f21874acbf88ac3a8a745282b871816fff09041af. 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/GBFDB2100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55a762389453dcd7f3d46634f46157f2573b53a6d942c958ee3d25e846fff8d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBFDB2100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7db5f8780598c25dc7d5f83ee94921c0e12c0f3022de3fae44e150480a5d5. 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/USVPR0006469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d79eb31a8404e31e524cde32fa8ff720687541fc27b84b2a1588e707b03a25. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USVPR0006470.
Lovers Rock (The Soulful Sound of Romantic Reggae)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeac9622a6e66a67c2cae580debb555201c36f8c147e3f2bbc14cd4373771a3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB5KW2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf8d24876c4573f5c3c82d98145ba9cad55285d2fc463ee4d020ee414b43bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB5KW2200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bebb23f84c33a02b2f735ab8cb8a5169a2cd5bda7c912b1dad53d7ce80b1e0. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USVPR2300057.
Bunny 'Striker' Lee & Friends: Next Cut! Dub Plates, Rare Sides & Unreleased Cuts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6508c46884b3d70018f637923c7fead555eda34e6e19a82a38d3d606e18ed3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBMHG1558809.
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 0xf8379c6a17765630513aa65e1097093ff5e17580f43455600848573dee6fb197. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBVVQ1900693.