Ruff Driverz were a British DJ/remixing/production duo consisting of Brad Carter and Chris Brown. The duo also recorded under the names 2000BC and Transit. In the late 1990s, the duo scored six dance
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 0xfcc925fc4978ddce15df247923027eee701e48e3934b7471b08c6166a0c12546. 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/dbd5b758-900b-428d-ae1f-81a7d95fcf00.json and https://artists.proofprofile.net/proofs/artist/dbd5b758-900b-428d-ae1f-81a7d95fcf00.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 0x0cbf1f071d3f99b98899e3177908f24e8f386e65e07ff15dfe4daa2c9e5f1039. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLML69700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86000ef73e0030730e6c465a0301be05fd383d849531acc58bb0565dc90c36af. 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/GBCEN0801487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfeac4937046435be1170909ff108642428b7001656e92c2a5d187f6f140e2f. 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/NLML69700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6551de0634f62a14940a7309475457638dfb16114abe457e505ce0aa2f5587d6. 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/GBCEN0900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0b8e6b6dc66e394f779c14eced296efd3764ab1b486ba15715588f45730748. 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/NLML69700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45285dc72ac0f19e0c4c8c336c3f261c164645a487f3990b2e0faca7b310d5b3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLML69700013.
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 0x1defd89ad6c9e7ec116f807aafc84bb561f992a52d673de8a7ea157b7228f41e. 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/GBDLM1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a454769c933395a2052577d784b45c9694db03dbd4bc90937bd32b2f83f71. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLML69800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cddbc3b60d913658e49e14a4e970df9f921b241842c19655773197325345e0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:44:36Z), 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/GBBXF9900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b596e07d42fd42f809417ef6256b70e006bedef3da7f4364ae64ac1ac8bd5c3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:46Z), 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/GBBXF9800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8665cb40b5e07b0dd991283c7c311975bab5ad1a9299498a3ff893fc9858b49. 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/GBBXF9800115.