Diwa de Leon (born 1980) is a Filipino composer, arranger and musician based in Maryland, United States. He makes music mainly for television shows, films, and stage productions, with his most notable
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 0xd7ccfe7f19c5b141dcd4372b38eafd7f867ec949c5f580d0f00abd5988d2a24a. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bc3d31d-a493-4cbc-9564-8d36d6407003.json and https://artists.proofprofile.net/proofs/artist/2bc3d31d-a493-4cbc-9564-8d36d6407003.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ibong Adarna: Music from Ballet Manila's Ibong Adarna
Palasyo Ng Mga Dwende: Music from Ballet Manila's Palace of the Dwarves