LD may refer to: Arts and entertainment Lighting designer, a person in charge of lighting in theatre Film and television Lorraine "L.D." Delacorte, a character on the TV series Degrassi Larry Dav
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 0x90ebd97623044254209aafce4ae6297e883e307a280a84480fb5634f792f1850. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ce0dfe0-eb32-42a2-9fa9-a93c88397bcc.json and https://artists.proofprofile.net/proofs/artist/3ce0dfe0-eb32-42a2-9fa9-a93c88397bcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).