Giacomo () is an Italian given name corresponding to English James. It is the Italian version of the Hebrew name Jacob. People bearing the name include: Giacomo Acerbo (1888–1969), Italian economist
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 0xe52be75e3cea924e6a50a813df22bbf1e7711c2c1145141029988c932b4e35d3. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1273bf16-e21f-446a-b315-dbf27fd94ab6.json and https://artists.proofprofile.net/proofs/artist/1273bf16-e21f-446a-b315-dbf27fd94ab6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).