Roberta Silva (born 1971, in Trinidad and Tobago) is an artist based in Milan and Lake Garda. Education and career Silva attended the Brera Academy of Fine Art where she graduated in 1995. She work
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 0x12156838e0c234a6282e5d09f66ce0ac331e8d528e5a6bd2fc76c622434d4a93. 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/58d23f9b-5381-42c4-aeed-463d17fa0474.json and https://artists.proofprofile.net/proofs/artist/58d23f9b-5381-42c4-aeed-463d17fa0474.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).