Mikhail Ivanovich Kalinin (, ; 3 June 1946)Abdurakhman Avtorkhanov, Stalin and the Soviet Communist Party: A Study in the Technology of Power. New York: Frederick A. Praeger, 1959; p. 1. was a Soviet
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 0xd13df0c253bcb75eeb9c06b1eab4a5ba5ff81865471c11662b370db4380e0b0a. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08ad85ee-9212-4987-9044-b1f1648925b9.json and https://artists.proofprofile.net/proofs/artist/08ad85ee-9212-4987-9044-b1f1648925b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).