Misha (), also known as Mishka () or The Olympic Mishka (), is the name of the Russian Bear mascot of the 1980 Moscow Olympic Games (the XXII Summer Olympics). He was designed by children's books illu
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 0x3f34b87fa2f0f96bf2e8c229181ed5715612bb988b1990c5a1741b42219eed0e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91a30e51-29c3-4d81-9940-fda04294dae5.json and https://artists.proofprofile.net/proofs/artist/91a30e51-29c3-4d81-9940-fda04294dae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).