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 0x9eafcc03bd7799dad287f19182689d5a3c88358c4d53a12239ffed14114942a6. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee6c4b2d-e948-4019-889a-2c1adcd1f535.json and https://artists.proofprofile.net/proofs/artist/ee6c4b2d-e948-4019-889a-2c1adcd1f535.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Story of Kansas Joe 1929-1944 (feat. Memphis Minnie) [Blues Collection Historic Recordings]
The Prodigal's Return - The Things I Usta Do I Don't Do No More
The Prodigal's Return (The Things I Usta Do I Don't Do No More)
Matchbox Bluesmaster Series Set 7: Songsters & Saints
Memphis Masters: Early American Blues Classics (1927-34)
Rhythm & Blues Goes Rock & Roll, Vol. 18
When The Levee Breaks: Mississippi Blues Rare Cuts 1926-1941 (CD C)
When The Levee Breaks: Mississippi Blues Rare Cuts 1926-1941 (CD B)
American Pop / Mississippi Blues, Volume 3 [1928 - 1942]
When The Levee Breaks: Mississippi Blues Rare Cuts 1926-1941 (CD D)
Evil Devil Woman Blues (Blues People 1933 - 1934)
Any Old Time, The Classic Country & Western Collection: Vol. 2
Why Don't You Do Right (feat. Peggy Lee)
16 Most Requested Songs Of The 1940'S, Volume II
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 0x26207ab82d8198cac9d0145de9515505192c06da0a440d9c18437a248d325d6a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USSM10028155.