220px|thumb|right|Yves Henry, in Villabé, in December 2014. Yves Henry (born 2 April 1959) is a French pianist who specializes in romantic music. He debuted at 13 performing Ludwig van Beethoven's 1s
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 0x4c758b13ff85ea67431f4ceb2a08d1ac847b6501c1df1e5cd8728bdc70526cb6. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebab2bfd-bf57-4f94-93ba-0ed4aa7741eb.json and https://artists.proofprofile.net/proofs/artist/ebab2bfd-bf57-4f94-93ba-0ed4aa7741eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yves Henry Orchestral piano Works - Œuvres pour piano 1879-1920
Yves Henry Dédicaces: Frédéric Chopin, Robert Schumann, Franz Listz