Colourbox were an English electronic musical group on the 4AD label, releasing a number of records between 1982 and 1987. The band was formed by brothers Martyn and Steve Young, Ian Robbins, and vocal
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 0xad9ba2558baef7147afb2996e94b5f9317c2f4e3ac61dfa45579a505cc222719. 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/6ea399f3-d691-4571-ab58-1234e93093ac.json and https://artists.proofprofile.net/proofs/artist/6ea399f3-d691-4571-ab58-1234e93093ac.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 0xf9e402a15baac632756d1982a85f4882e8cae667ff44b7a1e193457a9559ed0c. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/GBAFL8500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc654614d9e0e43ba7709201154102cad79fdd2d32092381bb705fe1c5c3ca91. 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/GBAFL8500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f9cbd7a52d3f5809a0a2a76dd9fd49cce2d94668132227e7e8d4fbb041cb03. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBAFL8500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104f91a017fd0bd46266aed26b7f67eb321380da410812ec823ef8999cb7127. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBAFL8500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1128a9433912d4cae1df289357ee5852901b50999e71548f0d1470face1a4d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBAFL8500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ff25d4d4d2b480ff27cbb9c664993c9231361911f2857d6781e447b6583d2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBAFL8500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09e6c5ddc7cdf6b5be436f4cf1f5ecd013ca56bd6594d16d2506c976d3b920d. 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/GBAFL8500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49475db924903418ad372edb1b50233f416c97a695a7faa482728d6e6fc058. 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/GBAFL8700053.
Looks Like We're Shy One Horse / Shoot Out
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e0b522875042364978c4db4290409c8504bd97ab811a1de244d1f7290457dc. 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/GBAFL8600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce76f3b88803d385e9e62f9cd9c19aaca0a40771e68983a357f861e39af1ab1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAFL8200096.
The Official Colourbox World Cup Theme - 7" Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337cf53627ec8d32c38b970cb7a1d967723699937ef10da5c37eb71521a45b46. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBAFL8600043.
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 0xe1ff1bb31e6e3c12b18fecc6f24a5f9e9886b22720445abf2ca4ef41b925ba13. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAFL8600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc339928ec95cd6297351a588bfe34a03972b58308fc6db46baab9a34ee52963c. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBAFL8600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14daf1c0179b154b90dbac14b279844fd3de3fec55542b9d88f59c904dae9763. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBAFL1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee31eb99587948d57b2d82125eebb49d722567756152ea8fb8993235b6106da0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBAFL1200027.
The Official Colourbox World Cup Theme - 12" Version Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630c2ce0ef014d5b27cf9cc84f383e7e58b57c9b5d5d8e18db316604d821dfc. 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/GBAFL1200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c30f22dedf9cffbc6b53b16f77b64693f3331e464c5240e867fc0998b24b5d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBAFL1200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4549fdd9473945cd1c3290c7f270747a88f9a0d48a1c8cac6436dd7ff5caa1c8. 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/GBAFL8700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522424e82093c9de2406204a3f1e0769f15e44a7fb9c0d6869ccf09b29f5cf14. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAFL8600098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1350781cd15457f11be9ffdeeebedbac338cf8d6dc25fef2def085766108dc9. 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/GBAFL8500072.