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 0x95ecd6510a252263fbc4cd6934858fadd1b31654b102d06c7bf4cfbd9ad211b0. 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/6173b056-d156-4f98-9085-78b9d3bb7617.json and https://artists.proofprofile.net/proofs/artist/6173b056-d156-4f98-9085-78b9d3bb7617.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jack Teagarden as Big T, The Legend Vol 2
Meet Me Where They Play The Blues (Remastered 1999)
Jack Teagarden And His Orchestra Selected Hits Vol. 1
Jack Teagarden And His Orchestra Selected Hits Vol. 2
Jack Teagarden and His Orchestra Selected Favorites Volume 1
Jack Teagarden and His Orchestra Selected Favorites Volume 3
Jack Teagarden and His Orchestra Selected Favorites Volume 2
Jack Teagarden And His Orchestra's You, You Darling
Big Band- The World's Greatest Jazz Collection, Vol. 93
The Jack Teagarden & His Orchestra Collection
Leonard Feather Presents Meet Me Where They Play The Blues (Digitally Remastered)
Jack Teagarden and His Orchestra Selected Favorites, Vol. 2
Jack Teagarden and His Orchestra Selected Favorites, Vol. 3
Jack Teagarden and His Orchestra Selected Favorites, Vol. 1
Father of Jazz Trombone (The Essential Classic Jazz)
Teagarden, Jack: Texas Tea Party (1933-1950)
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 0xe9df5cb126000081ab7e26d97c238d405f9500552258eb134f76da103ac390e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKI190139019.