Blunt may refer to: Blunt (surname), a surname (and list of people with the name) Blunt (cigar), a term used in the cigar industry to designate blunt-tipped, usually factory-rolled cigars Blunt (ca
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 0xcf030164d9c67afc895f344893d44a1d49fa2a7e6ebe5aef2ecf8033b2d99930. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/608364fe-ee81-455b-a31a-d94054172a2e.json and https://artists.proofprofile.net/proofs/artist/608364fe-ee81-455b-a31a-d94054172a2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).