thumb|Sen-hime (千姫), the eldest daughter of Tokugawa Hidetada is the Japanese word for princess or a lady of higher birth. Daughters of a monarch are actually referred to by other terms, e.g. , liter
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 0x135bea4dbf8e04f743eee0793a14d76ebd8b9b57aae091ce99146e93e7966728. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09a93b34-c7d3-4fc4-899f-e418a258cf89.json and https://artists.proofprofile.net/proofs/artist/09a93b34-c7d3-4fc4-899f-e418a258cf89.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).