thumb|upright=1.5|A telescope in the Very Large Telescope system producing four orange laser guide stars |alt=A telescope emitting four orange laser beams A laser is a device that emits light through
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 0x4cff88c77984246aba959c349add5676311948dc29b2e6a99a4fc2f92511b157. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c708de35-2a78-443e-a9cf-916fb0236bcb.json and https://artists.proofprofile.net/proofs/artist/c708de35-2a78-443e-a9cf-916fb0236bcb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).