Plain vanilla is an adjective describing the simplest version of something, without any optional extras, basic or ordinary, in analogy with the common ice cream flavour vanilla, which became widely an
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 0xdc916e258dd06c2d4e3a065778de12475436201ef373deee6330b956d34cd344. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d0ae9ca-7c96-4e16-99e1-c69bbd2fe615.json and https://artists.proofprofile.net/proofs/artist/3d0ae9ca-7c96-4e16-99e1-c69bbd2fe615.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).