Willie Cook (November 11, 1923 – September 22, 2000) was an American jazz trumpeter. Cook was born in Tangipahoa, Louisiana, on November 11, 1923.Hogan, Ed "Willie Cook". AllMusic. Retrieved July 13,
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 0xf5f765210a261c406278e582afe880d9090b17d2ab28c742dffc017f5fec9991. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21739757-ec8b-4695-8940-dd419ad86c75.json and https://artists.proofprofile.net/proofs/artist/21739757-ec8b-4695-8940-dd419ad86c75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christl Mood - Willie Cook and the Young Swedes (Remastered)