Ruwan (Sinhala: රුවන්) is a Sri Lankan name that may refer to Ruwan Chathuranga (born 1989), Sri Lankan cricketer Ruwan Herath (born 1984), Sri Lankan cricketer Ruwan Kalpage (born 1970), Sri Lankan c
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 0xeb57ebda2c2e8ff498dc85267714d597457b0d9851ba3b0b93adcbf06c37a2c5. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d815ee4f-7a8f-48e4-af6f-9367578ef1c3.json and https://artists.proofprofile.net/proofs/artist/d815ee4f-7a8f-48e4-af6f-9367578ef1c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).