The Valigeria Franzi was an Italian manufacturer of leather bags and luggage founded in Milan in 1864 by Rocco Franzi. By the early 20th century, it was a supplier to royalty and nobility. It was lis
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 0x8c1849fb5c7cd6d71d5b6a9b59ee274297eaa55f5f417150d2ae10cff8696562. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9522b7e-bb20-489b-81ca-1de6edd3bd36.json and https://artists.proofprofile.net/proofs/artist/b9522b7e-bb20-489b-81ca-1de6edd3bd36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Poder Del Amor, Vol. 1 (Latin Amerika)