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 0x40bac3c5d89e7691c3254ecce0bccf8ebff882cdfeaa0b0d77072f9b6ee51b6d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91ad2dbf-0830-4116-889f-088f0f7a8f01.json and https://artists.proofprofile.net/proofs/artist/91ad2dbf-0830-4116-889f-088f0f7a8f01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cat Speaks - Paris, France 1977 (The Definitive Black & Blue Sessions)
Cat Anderson Plays W.C. Handy - Paris, France 1978 (The Definitive Black & Blue Sessions)
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 0xdeeba4bafbe645e6e7f5cd6d5826078a8d58ec182a624f7be58966930b74b087. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRZ116407849.
Don't Get Around Much Anymore - Original Mix
You're the Cream in My Coffe - Original Mix
A Flower Is a Lovesome Thing - Original Mix
Between Some Place, Goin' No Place - Original Mix
Ac-Cent-Tchu-Ate the Positive - Original Mix
Ellington, Duke: Duke Ellington - The Forum, Hamilton, Ontario, Canada (8 February 1954)
Pretty and the Wolf (Also Known as Monologue)
Don't Get Around Much Anymore - In a Sentimental Mood - Mood Indigo - I'm Beginning to See the Light - Sophisticated Lady - Caravan - It Don't Mean a Thing - Solitude - C-Jam Blues - I Let a
I Let a Song Go Out of My Heart - Don't Get Around Much Anymore