thumb | right Roberto is an Italian, Portuguese and Spanish variation of the male given name Robert. Notable people named Roberto include: Roberto (footballer, born 1912) Roberto (footballer, born
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 0x1ee006239843b76b7ed4a6667505a805a5cfd3ca8dae3cf9a9eb8042d066dd67. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f11e8c0a-3c30-4569-af6f-b800acdde98f.json and https://artists.proofprofile.net/proofs/artist/f11e8c0a-3c30-4569-af6f-b800acdde98f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).