Isabella Daza de Leon (born July 30, 1994), also known as Isabelle de Leon, is a Filipino actress, singer-songwriter and beauty queen. She was a former child actress, known to many as Duday in GMA-7'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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d86a431f43fba64d78cdb662d1187c9bde0ff570c05df81745650665e06f64d. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdee8be1-bb3e-48c1-b06e-5685d2a1955a.json and https://artists.proofprofile.net/proofs/artist/bdee8be1-bb3e-48c1-b06e-5685d2a1955a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).