John Du Prez (born Trevor Jones; 14 December 1946) is a British musician, conductor and composer. He was a member of the 1980s salsa-driven pop band Modern Romance and has since written several film s
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 0x8ac7d0769921f64ad04ab03e4476b670eb157b03084b1de069e135eac73c9f45. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf3ffebf-71a9-45c3-947a-eca96df48f54.json and https://artists.proofprofile.net/proofs/artist/bf3ffebf-71a9-45c3-947a-eca96df48f54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Fish Called Wanda (Original Motion Picture Soundtrack)
Teenage Mutant Ninja Turtles Original 1990 Motion Picture Soundtrack
Teenage Mutant Ninja Turtles Part II: The Secret of the Ooze (Original Motion Picture Soundtrack)
Teenage Mutant Ninja Turtles Part III (Original Motion Picture Soundtrack)
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 0xf95f5a20bcdaa2c1ff9f7f19926d591e84a086dcbd0ca29ea249f96ccd94113d. 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/USWD10628486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a73ba50c74fcd119f9c2443d56720f1cf12baea3ab64b8a70450b223bb3cec. 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/USWD10628487.