1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf4ef3325c7900f5f2785023703dc98f3780ae49dd5c445b3caae7e4c587a23d8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e037d1b-0275-4cbf-b855-e978053ecb50.json and https://artists.proofprofile.net/proofs/artist/3e037d1b-0275-4cbf-b855-e978053ecb50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It Takes Time - Live at Bill Graham's Filmore West, San Francisco, CA - January/February 1969
Blues On a Westside - Live at Bill Graham's Filmore West, San Francisco, CA - January/February 1969
It's About Time - Live at Bill Graham's Filmore West, San Francisco, CA - January/February 1969
Killing My Love (feat. Michael Bloomfield)
Gypsy Good Time (feat. Michael Bloomfield)
Throw Your Dog a Bone (feat. Michael Bloomfield)
As Good as You've Been to This World (feat. Michael Bloomfield)
Wintry Country Side (feat. Michael Bloomfield)
It Takes Time (feat. Michael Bloomfield)
Blues on a Westside (feat. Michael Bloomfield)
It's About Time (feat. Michael Bloomfield)
Record Plant '73 KSAN-FM Broadcast (Live)
As Good As You've Been To This World - Live
Theme From Steelyard Blues (Drive Again) - Live
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 → block OTSBitcoinBlock must exist at that height 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 0x690e0da629f04c6c9f618370929fa8c2204cdccb60ae03b8dfbb8bc62ff22a81. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QMPCY2400002.
Left Hand Soul (feat. Lester Chambers of the Chamber Brothers)
Blackberry Jam (feat. Lester Chambers of the Chamber Brothers)
Blues Back Off Of Me (feat. Charlie Musselwhite Jimmy Vivino)
It Takes Time (feat. Nick Gravenites) - Live
Don't Say That I Ain't Your Man!-Essential Blues
Summer Of Sorcery Live! At The Beacon Theatre