right|270px|thumb|Shikakudake on the border of Takko with Iwate Prefecture and Akita Prefecture is a town located in Aomori Prefecture, Japan. , the town had an estimated population of 4,592 in 2050
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 0x70e2cf35427f9e048a3df6853e9633acdd3e75d44567099fc9cd260d30587b22. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ab559b1-ab52-474a-b119-88cedc9df445.json and https://artists.proofprofile.net/proofs/artist/1ab559b1-ab52-474a-b119-88cedc9df445.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).