thumb | right | Lucio Attinelli Lucio is an Italian and Spanish male given name derived from the Latin name Lucius. In Portuguese, the given name is accented Lúcio. Lucio is also an Italian surname.
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 0x7246c54312753b4b889f7ecc93e3e86083a7a38522cd9428083b6fec3194b593. 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/6a7540d8-41f2-4b7a-8cdb-5a50a105a552.json and https://artists.proofprofile.net/proofs/artist/6a7540d8-41f2-4b7a-8cdb-5a50a105a552.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).