José Luis Estrada Segalerva (4 July 1906 – 23 February 1976) was a Spanish lawyer, writer, state tax inspector, politician, and sports leader. Among the various positions he held are those of Procurad
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 0xf48637f8d205a2c82f6b9b70e97070e6ca9d65e1f04d2eaa73c4021a22f4c459. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d19f8f6-f04b-43ff-9525-de510126d717.json and https://artists.proofprofile.net/proofs/artist/0d19f8f6-f04b-43ff-9525-de510126d717.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).