Yuan may refer to: Currency Yuan (currency), the basic unit of currency in historic and contemporary mainland China and Taiwan Renminbi, the currency system of modern mainland China, whose basic un
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 0x740949fe060d913c8d4f4579a63c0164a3c821f2f7d31bce2fd785a109d074de. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a6a58c5-b541-4ea7-a598-1f55bb2f2a47.json and https://artists.proofprofile.net/proofs/artist/9a6a58c5-b541-4ea7-a598-1f55bb2f2a47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).