NGL may refer to: Companies and organizations National Guardian Life, an American life insurance company North German Lloyd, a German shipping company No Greater Love, U.S. humanitarian non-profit or
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 0x99cebe743209d9d2fa667dd9d940bda10be3f100a52d3e7f5bb0f7a209ce9ac2. 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/5f2dd705-951a-437a-b9f1-d5c320757363.json and https://artists.proofprofile.net/proofs/artist/5f2dd705-951a-437a-b9f1-d5c320757363.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).