Lupino, or Luppino, is a surname of Italian origin derived from the Latin lupīnus, which is said of something or someone pertaining to or relating to the wolf. The name may refer to: The Lupino famil
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 0x0bd6b39bbbb7fd3395e24509210cdff70ff1de8b4b440b07298e0338af8d3b54. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e4f26f5-4b4b-41d2-8f42-23d55a44b14e.json and https://artists.proofprofile.net/proofs/artist/7e4f26f5-4b4b-41d2-8f42-23d55a44b14e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).