thumb|upright=1.1|Four traditional dice showing all six different sides. thumb|upright=1.1|Dice of different sizes being thrown in slow motion. A die (: dice, sometimes also used as ) is a small, thr
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 0x3b57a1795b621ee51afc3d59a54f5bb3b663a3d9d88a3c038b7a1ec5a021a8a7. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/493bdb64-cfca-4590-89c2-31f77fb35eaf.json and https://artists.proofprofile.net/proofs/artist/493bdb64-cfca-4590-89c2-31f77fb35eaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).