Roti is a round flatbread originating from the Indian subcontinent. It is commonly consumed in many South Asian, Southeast Asian, Caribbean, East African, and Southeast African countries. It is made
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 0x9b02d42f30acd884fafc08cd755e457945d327b7b1fbcb8c8dc25c0f137ee43c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72eac6a3-048b-43a1-b115-632a33e688c4.json and https://artists.proofprofile.net/proofs/artist/72eac6a3-048b-43a1-b115-632a33e688c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).