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 0x9585dcaecbbcb319d97743fbf086bbe83c8ddc6fdaf438df973f42dd674052fb. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c14862a-1b51-4ba6-a303-158f3c544ae5.json and https://artists.proofprofile.net/proofs/artist/2c14862a-1b51-4ba6-a303-158f3c544ae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
King Oliver and His Creole Jazz Band's Zulus Ball
King Oliver and His Creole Jazz Band Selected Favorites
King Oliver's Jazz Band Selected Favorites
Classic Jazz- The World's Greatest Jazz Collection - From New Orleans to Harlem, Vol. 3
Dipper Mouth Blues (In Chronological Order 1923)
Working Man's Blues (In Chronological Order 1923)
Classic Jazz Gold Collection (King Oliver's Jazz Band)
Classic Jazz Gold Collection (King Oliver in New York 1927-28)
Dipper Mouth Blues (Original Recordings 1923)
Where Did You Stay Last Night? (Original Recordings 1923)
King Porter Stomp (Original Recordings 1923-1924)
KING OLIVER'S CREOLE JAZZ BAND - THE GREATEST HITS VOL.2 (히트곡 모음집)
KING OLIVER'S CREOLE JAZZ BAND - THE GREATEST HITS VOL.1 (히트곡 모음집)
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 0x6904d66dd2d11f87977245aad04e26a52889d65fc123bd2333449bcbcf15e6e3. 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/GBBMR0822502.
Ken Burns Jazz-The Story Of America's Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625eb17148daa8d0b22534408ade777ee220d5914c7a2331f30aff8c1c1706d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USSM19927831.