thumb Vladimir Anatolyevich Matorin (; May 2, 1948) is a famous Russian opera singer. He is considered one of the greatest contemporary bass singers in Russia. Biography Vladimir was born May 2, 194
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 0xa3b98d15f50b795a05fb69f7957b0978e4ef9dc9c3c5cb76206ad5252a34ca8e. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a67e75df-eb49-42dd-bc8f-79d2f0b76443.json and https://artists.proofprofile.net/proofs/artist/a67e75df-eb49-42dd-bc8f-79d2f0b76443.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).