Bret Peter Tarrant McKenzie (born 29 June 1976) is a New Zealand musician, comedian, music supervisor, and actor. He is best known as one half of musical comedy duo Flight of the Conchords along with
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 0xabf8851a4f0b74d37ca36f4063bba9fb0470aa08eeb2ff971c3e0ea4a4315dda. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c779605a-f4b3-44e8-8736-9d9960e0008e.json and https://artists.proofprofile.net/proofs/artist/c779605a-f4b3-44e8-8736-9d9960e0008e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'll Get You What You Want (Cockatoo in Malibu) [Muppets Most Wanted]
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 0x5a78365c3cfab0fbfbaf6f070b95170caabf48e9232b36cd9d9a5dcb8396475e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USSUB2146901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9141c47a342a716f8a001576fa5b6bb3ddef3387ad7fa46400a8a5da3b5a5b46. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:09:37Z), 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/USSUB2146904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cdde326d653f3b419a2485ab5076eee5199747437955655789ff717aac4551. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:25:13Z), 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/USSUB2146905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d469019747ebd431442184f3ff6f76aad67050ed7f5d1347b77a6b57692149. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:31:56Z), 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/USSUB2146906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b6cf41aa6aa8b2d035d949fcde75b2f9c26fad5809eaffe1f4ac3752c72662. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USSUB2146908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1c3ad8efafccbcb927a246760f0ae345987c01ba904ddbe898a5478e1fdaa. 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/USSUB2146909.
A Song For Leon (A Tribute to Leon Russell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6430c719a7b00277f0263acf0b9a242eff39021a8e1b1841f57b5dfc83de92bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMB622300182.