Juan Medina may refer to: Juan José Medina, former President of Paraguay Juan Medina Herrad (born 1992), Dominican boxer Juan Antonio Medina (born 1946), former Spanish handball player Juan Carlos
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc6827f8376b498ec1347455858efd7abf92031ad60c575c2e8d00aebc02a6. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/795d3b1a-88ff-4aa2-aabb-e61693b985c5.json and https://artists.proofprofile.net/proofs/artist/795d3b1a-88ff-4aa2-aabb-e61693b985c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).