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 0x506a52364ce7e1c664248d71f7c32c09d3ff4cb6c9b754cf218fca417c8edeea. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e261421c-bef0-4145-a865-08463862d5c5.json and https://artists.proofprofile.net/proofs/artist/e261421c-bef0-4145-a865-08463862d5c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Русские народные сказки - Маша и медведь
Русские народные сказки - Волшебное кольцо
Русские народные сказки - По щучьему веленью
Золотой ключик, или приключения буратино
Русские народные сказки - Царевна-лягушка