Blanca Marsillach del Río (born 23 March 1966) is a Spanish theatrical producer, actress, and businesswoman. Biography Born in Barcelona on 23 March 1966, daughter to Adolfo Marsillach and Teresa d
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 0x498ddcde142e1cf1f87a7f7d5d0f60ba67be3f33be02beefe7bb6c422fc2cad2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8877f610-dc32-40ee-b448-7b2d4b6e5bd8.json and https://artists.proofprofile.net/proofs/artist/8877f610-dc32-40ee-b448-7b2d4b6e5bd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).