Matusevich can refer to: People Dmitry Matusevich (born 1978), Belarusian politician Eduard Matusevich (1937 —), Soviet speed skater Helen Matusevich Oujesky (1930 – 2010), American professor of micro
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 0x40a528b3e19aea71315829321db99c2e34ea763719a7d0d4024f23ab6093994e. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7dff2c8-1b9e-410d-99b7-636f912b3e22.json and https://artists.proofprofile.net/proofs/artist/e7dff2c8-1b9e-410d-99b7-636f912b3e22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).