One Light may refer to: "One Light", a 2003 song by Skid Row from Thickskin "One Light", a 2013 song by 3 Doors Down from The Greatest Hits "One Light", a 2015 song by Kalafina from Far on the Wat
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dc60f51c2145646c181f4dc84d5382e658fb7fa5dd287de0d3d889ca4a3a79. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c64d5c3c-5277-4d7e-a2a4-2d01623d6c40.json and https://artists.proofprofile.net/proofs/artist/c64d5c3c-5277-4d7e-a2a4-2d01623d6c40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).