Masha and the Bear (, ) is a Russian preschool comedy animated television series created by Oleg Kuzovkov and produced by Animaccord Animation Studio, loosely based on the oral children's folk story
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 0x91d453cb36fb32e45d91001e854584eaa5f483a8a6891d5bd9e048055792e73a. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c2d333e-967a-43fd-b184-2e5c0045824c.json and https://artists.proofprofile.net/proofs/artist/7c2d333e-967a-43fd-b184-2e5c0045824c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Masha and the Bear (Original Motion Picture Soundtrack), Pt. 1