Carlos Santiago may refer to: Carlos E. Santiago, Puerto Rican American labor economist and chancellor of University of Wisconsin–Milwaukee Carlos Manuel Santiago (1926–2008), baseball infielder, s
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 0xf23c34a26385371e2245e3dbac65b57a861e29459878838358236890aae18853. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/549b57e5-85bd-4566-b24d-a88c46dd9bbe.json and https://artists.proofprofile.net/proofs/artist/549b57e5-85bd-4566-b24d-a88c46dd9bbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).