Smiley Face or Smiley Faces may refer to: Smiley face, a stylized representation of a smiling humanoid face Smiley Face (film), a 2007 American film "The Smiley Face", a 2011 Curb Your Enthusiasm
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 0xa125bda84804807afb8d52f41720b5ed5c8797d3bda9426d5d8c91fa5ace9f4a. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76ba1af1-2e27-4941-82a1-21fc3122607a.json and https://artists.proofprofile.net/proofs/artist/76ba1af1-2e27-4941-82a1-21fc3122607a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).