Spiros Exaras is a Greek guitarist, composer, producer and arranger. Career He has performed and recorded with Mariah Carey Shirley Bassey Mark Murphy Gerardo Velez, Philip Hamilton, Charles Blenzi
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 0x8d01856609ccad199e1932758a847a1e95707d02943ee12b73e4aea6b599ffe9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6cae186-4a32-42d1-8fcd-cecf6bd936d4.json and https://artists.proofprofile.net/proofs/artist/c6cae186-4a32-42d1-8fcd-cecf6bd936d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything for a Reason (Original Motion Picture Soundtrack)
Niko's Restaurant (Original Motion Picture Soundtrack)
Just Cause (Original Motion Picture Soundtrack)
The Dwarf Planets (Five Trombone Etudes)
Anatomia Enos Eglimatos (Enteka Astinomika Tragoudia)