Jesse Brian Marchant, better known by his stage name JBM, is a Canadian singer-songwriter. In 2011, he signed a recording contract with American label Partisan Records. Early life and education March
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 0x688de7399cef9aee56ff318164ccc9a6640df2ac6d66071231f11f8ac3cc453a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c83dd350-7740-4491-aa2b-a5e617c41fac.json and https://artists.proofprofile.net/proofs/artist/c83dd350-7740-4491-aa2b-a5e617c41fac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).