Buffy may refer to: Buffy (given name) Buffy (album), a 1974 album by Buffy Sainte-Marie for MCA Records Buffy (color), a color often used in description of birds Buffy (dog), Russian President V
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e87d01db167b59fa8fe20bdbc85b75e78ab4ccb2148f40a3838b09e619264e2. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0766e2db-83eb-445d-b67d-ec5b36905c39.json and https://artists.proofprofile.net/proofs/artist/0766e2db-83eb-445d-b67d-ec5b36905c39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).