thumb|upright=1.1|Răducanu in 1992 Johnny Răducanu (born Răducan Crețu; 1 December 1931 – 19 September 2011) was a Romanian Romani jazz pianist, whose family has a long musical tradition dating back t
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 0xfd0a8e2044fa3d796beaf7f1841b32e9d6d507f6160731cc7bfb8500885f4e60. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9683809a-6364-4edf-95d8-ed68212d4cb3.json and https://artists.proofprofile.net/proofs/artist/9683809a-6364-4edf-95d8-ed68212d4cb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jazz Bestament - Paris 2005 (Instrumental)