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 0x493e105fe7562686450a5597576247bc1752b0c62621a15cfcf70a4af3318443. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d0f79a9-8768-4b91-b853-ad7dd5da5046.json and https://artists.proofprofile.net/proofs/artist/0d0f79a9-8768-4b91-b853-ad7dd5da5046.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Victor Yoran plays Tschaikowski, R. Schumann and Chopin
Victor Yoran Plays Debussy, Fauré and Reger
Johann Sebastian Bach: Suite for Violincello No. 1 + 2