Intus was a traditional pre-colonial Filipino alcoholic drink from the Visayas Islands and Mindanao. It was made by boiling sugarcane juice until it reduces to a thick syrup. It was then allowed to co
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 0xc8db3733623d71ea403336b24aa24bd215a66f91e6371080646ed176668912bd. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e539c50c-51a0-41e0-975c-4bb3d06ee512.json and https://artists.proofprofile.net/proofs/artist/e539c50c-51a0-41e0-975c-4bb3d06ee512.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).