Chath Silva, formally known as Chathura Saranga Silva, is an Australian classical guitarist, recording artist, and medical doctor. Early life Chath was born in Colombo, Sri Lanka, to parents Ranjit
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6138f78c7d168c6ead93660f4d2b7c983d62aeb1b94c2d13a49315e365e25f86. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54bcacba-a4bc-4b1d-b284-6683ca16d2e5.json and https://artists.proofprofile.net/proofs/artist/54bcacba-a4bc-4b1d-b284-6683ca16d2e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BACH: Complete Preludes (Cello Suites), arr. Chath Silva, guitar