Shestakov (masculine, ) or Shestakova (feminine, ) is a Russian surname. Notable people with the surname include: Dmitri Shestakov (born 1983), Russian soccer player Igor Shestakov (born 1984), Rus
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 0x30746fdbb8ea9cc1847c6a88faaf69a1eb5c04f2d33c8648a524a7cbf74ca3c5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78f1f76f-a894-4994-88fb-57424fc6e302.json and https://artists.proofprofile.net/proofs/artist/78f1f76f-a894-4994-88fb-57424fc6e302.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).