Smen (from also called sman, semn, semneh, or sminn) is a salted, fermented butter native to North African cuisine (Algeria, Morocco and Tunisia), as well as a traditional Yemeni dish. In countries l
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 0x33f5a5c8cbe14153db15a799811f9202bd4b0f614469a86fca0657558a18174d. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c07bb8a-8123-433e-9a47-22cfbf09031f.json and https://artists.proofprofile.net/proofs/artist/7c07bb8a-8123-433e-9a47-22cfbf09031f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).