Diogo de Almeida Santos (born 13 November 1984) is a retired Portuguese professional footballer who played most successfully for U.D. Oliveirense, F.C. Arouca, F.C. Famalicão, C.D. Santa Clara, and A.
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 0xccbf93996c386b8f853c21e79be9f59386aa9e5ff841fab7916a06004a14c522. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9abd72e2-23c2-4317-a51b-24e92f8cd036.json and https://artists.proofprofile.net/proofs/artist/9abd72e2-23c2-4317-a51b-24e92f8cd036.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).