Aleksandr Mikhailovich Zhvakin (Russian: Алекса́ндр Миха́йлович Жва́кин; born 25 January 1989, Ulyanovsk), better known under the stage name (Russian: Лок Дог), is a Russian rap and hip-hop singer, l
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 0x99d35df12c0c839d6d77c9b6f244192cc636f481a52ad3c51861394b7355a1e3. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48a5843f-740c-4993-a66e-f0ebb6accc9c.json and https://artists.proofprofile.net/proofs/artist/48a5843f-740c-4993-a66e-f0ebb6accc9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).