Stiffy may refer to something that is hard, firm or rigid. It may also refer to: Stiffy (film), a 2005 short film by Jacqueline Wright Stiffy disk, an alternative name for the -inch floppy disk Gr
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 0xf3370671cba7604fcf81a2020713a970c508a1ea8c74931aa94b0c79d46d701d. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b3a5d5f-e9dd-4cbe-9f9c-43489a3b890d.json and https://artists.proofprofile.net/proofs/artist/7b3a5d5f-e9dd-4cbe-9f9c-43489a3b890d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).