thumb|150px|The general structure of an ether. R and R' represent most organyl substituents. In organic chemistry, ethers are a class of compounds that contain an ether group, a single oxygen atom bo
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 0xf97ef0fdfdfb65f1d640ab46d8fdbc766a7ce4fb28756762daa22492832a9751. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f98c2f-eb8f-477b-9456-233e3d1667a3.json and https://artists.proofprofile.net/proofs/artist/e7f98c2f-eb8f-477b-9456-233e3d1667a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).