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 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 0x154ed231af88c72f9b4f7e50325505a96287fdae33b2c5516aba7ad5e641b05e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/090ffa1f-4e51-4a6b-b75e-5c16262a0bd2.json and https://artists.proofprofile.net/proofs/artist/090ffa1f-4e51-4a6b-b75e-5c16262a0bd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Earl Hines And His Orchestra Selected Hits Vol. 10
Earl Hines And His Orchestra Selected Hits Vol. 3
Earl Hines And His Orchestra Selected Hits Vol. 5
Earl Hines And His Orchestra Selected Hits Vol. 9
Earl Hines And His Orchestra Selected Hits Vol. 7
Earl Hines And His Orchestra Selected Hits Vol. 8
Earl Hines And His Orchestra Selected Hits Vol. 1
Earl Hines And His Orchestra Selected Hits Vol. 6
Earl Hines And His Orchestra Selected Hits Vol. 4
Earl Hines And His Orchestra Selected Hits Vol. 2
Earl Hines And His Orchestra's It Had To Be You
Earl Hines and His Orchestra's A Monday Date
Earl Hines And His Orchestra's You Can Depend On Me
Earl Hines And His Orchestra's Windy City Jive
Big Band- The World's Greatest Jazz Collection, Vol. 33
Big Band- The World's Greatest Jazz Collection, Vol. 32
Big Band- The World's Greatest Jazz Collection, Vol. 35
Big Band- The World's Greatest Jazz Collection, Vol. 34
Big Band- The World's Greatest Jazz Collection, Vol. 31
Big Band - The World’s Greatest Jazz Collection: Vol. 30
Timeless Jazz: Earl Hines & His Orchestra
The Best of Earl Hines and His Orchestra
The Gold Standard Series - Jazz, Big Band & Swing Classics - Earl Hines & His Orchestra
Earl Hines - 61 Greatest Jazz Hits, Vol. 2
Earl Hines - 63 Greatest Jazz Hits, Vol. 1
Jazz Archives Presents: Earl Hines and His Orchestra (1932-1934 and 1937)
Essential Classics, Vol. 830: Earl Hines & His Orchestra
The War: A Ken Burns Film - The 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 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 0xab96e6dd1dfbffc49bd3869f6c5df7b0c9d934f2830d5ca25ead9bacc37edbcf. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USBB10200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe70e96a115813206370daa6a8b3094b012731a1448c9bcf1975dc69db356eaf. 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/USA560649294.