Tinto de verano (Spanish: , ) is a cold, wine-based drink popular in Spain. It is similar to sangria and is typically made up of 1 part of table red wine and 1 part soda, usually lemon-flavored. Tradi
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 0x0f48dfd7495699667bc0eb3634daef81661294250fdddd0e8356c4de192dd6be. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0473a78-6bb2-4155-a28e-36c7b479cd75.json and https://artists.proofprofile.net/proofs/artist/c0473a78-6bb2-4155-a28e-36c7b479cd75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).