Labi may refer to: Emmanuel Gyimah Labi (born 1950), Ghanaian composer, conductor, and music professor Labi, Sikkim, village in India Labi Siffre (born 1945), British poet, songwriter, musician and s
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 0x174c6c4682e426d886406d963692d1dc710b312bf0d0abd729f593840fd14d4d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9eba426-52f0-4190-bdc1-b3e768a8bfea.json and https://artists.proofprofile.net/proofs/artist/e9eba426-52f0-4190-bdc1-b3e768a8bfea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).