Juul Labs, Inc. (, stylized as JUUL Labs) is an American electronic cigarette company headquartered in San Francisco. Its flagship product is the Juul electronic cigarette, which atomizes nicotine sal
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 0xcff16291386deb0e61d788fd2136c928c4d3112875da3d7adea17f0ecc4fbbf0. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09ef9de0-a221-4317-8faf-a834bd2090c1.json and https://artists.proofprofile.net/proofs/artist/09ef9de0-a221-4317-8faf-a834bd2090c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).