Thomas James Ladnier (May 28, 1900 – June 4, 1939) was an American jazz trumpeter. Hugues Panassié – an influential French critic, jazz historian, and renowned exponent of New Orleans jazz – rated Lad
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54917efe6ad61ed83d15192fc490c25d0afd3e3793a373b79bd85dcd5303fde. 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/69eb32a4-a4b9-4327-bd65-8d77dfa93484.json and https://artists.proofprofile.net/proofs/artist/69eb32a4-a4b9-4327-bd65-8d77dfa93484.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Warm And Tender Soul Of Tommy Ladnier
Two of a Kind: Tommy Ladnier & Mezz Mezzrow