LOC, L.O.C., Loc, LoC, or locs may refer to: Places Lóc, a village in Sângeorgiu de Pădure, Mureș County, Romania Lócs, a village in Vas county, Hungary Line of Contact, meeting place of Wester
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 0x015a2b2f0297af720836cc189bbd7269802bb012d6f753d8d2f629d664d4453a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cd1ad87-1f60-4348-8e0e-6c98dec20c46.json and https://artists.proofprofile.net/proofs/artist/5cd1ad87-1f60-4348-8e0e-6c98dec20c46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).