Martin Campbell (born 24 October 1943) is a New Zealand film and television director and producer, long based in the United Kingdom. He is best known for his works in the action and thriller film genr
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 0x5cf6df30192a80e134512f6933ebc691b5ab7389186852c3b1211c81f10fc90b. 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/36929a5c-a020-463f-b7fa-0fa54f04db06.json and https://artists.proofprofile.net/proofs/artist/36929a5c-a020-463f-b7fa-0fa54f04db06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historical Tracks (1978-1995) - The Foundation
San Diego Vibes (Dedicated to Tine & Yvette)
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 0x7cdd0856cae892f9c41a02bdbda21218923169780c192ec4b2df9804f1207387. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAEU2003406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cab2aedfe8429d5d8a46eb6e0e7830a7583334449c75bd34169836ef07eae6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:24:14Z), 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/TCAEU2007045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda883275c583d39c7fdd062a69bdabc001cb01c6574fb27b4e781744710f8de6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEU2007047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c77e6964e32d31054eeae810705580c7a35f8fc8c6d7e656a8dcb3e94fc4949. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAEU2007050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7cac825d7596dc0a7d980c524a5d00ffefc1c1c88eb71a90b95ee0837b31c7. 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/TCAEU2003298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b8df46ef87ab04ba985679fe88f0a240c1d41a43e6769c90ceb8f790841969. 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/TCAEU2003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b0eba2ebccb1bdc21772a439928706bffac77f4eb396d0a2a4a365d23721a3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAEU2003306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04ec642c9a584ed8243355f1c919ffb5e370ba85498e55b5693b7beb22f5c4d. 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/TCAEU2003331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2259bc57d667134afbbaf5514eaf766cdbb51e03a97b1aca6c2a66959da6157. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/TCAEU2007192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66550df77acf866bf2cf18548cc9cfd33d9fc9df34b19fec2208a047b8b9c2c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAEU2007132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bd53a4b0c0efe7318caf3d3d7667813661d9c3978faf497e792158ddb22b9c. 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/TCAEU2002914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac10455e9bb4d4a8f8e98d52d9684f38e1ea2e89dfe52e58cdc5996fdc29ead8. 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/TCAEU2002915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add43df18ceabd73f24ae58c4808c269053efb740ed58575185c855f29d615c. 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/TCAEU2002919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc6391aef77da7e069fe74f39a95f2860142f723b81bf271d5e0d636d1a1a15. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:12Z), 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/TCAEU2002927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef236042488ad2ec1c5d49d1ff0ac406f81c5c459ddd207689787ae13e0785c. 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/TCAEU2003828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063dffa5dffc79710f110c2ce134a1b731b39f5d9c5327984daf6d0b76269407. 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/TCAEU2006647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f94643e13a0af8ef3dcf74e2a2818fc350680d27b6ef7c21b5bfd88e3a6f49. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/TCAEU2003164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce549814224d5de437b90dbbca67f63851d259b0021cf0cf77990ee640287eb0. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/TCAEU2003177.
Urban Style - Alpha Steppa & Dub Dynasty Remix
Dub to Dub (High Tone Remixed Dub to Dub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6803a9d58fd90675a64add8b0ec84c98eebf5ffe266df107f4df5202c516ddaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR92U1800100.
Urban Style - Alpha Steppa & Dub Dynasty Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ddfac19509bab79e762b517a872433c4e4ddf86de13898caecece3f1e1422. 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/FR92U1800190.