Sovereign Ledger
Cryptographic compliance attestation for physical oil batches.
Signed, verifiable Digital Passports backed by Texas RRC production data and Ed25519 signatures — so a bank can underwrite a cargo on the same artifact the operator signed, and a skeptic can hit the verify endpoint from DevTools and confirm the system is real.
Three ways to evaluate the product
The pages below are written for three different readers. Pick the one that matches you.
For banks and insurers
Underwrite against a signed attestation
Sample Audit Bundle, public JWKS, Stripe-style webhooks, and the Subscriber API reference for vendor intake.
Open the bank pack →
For producers and midstream
Capture the premium on every cargo
A $500–$1,500 passport unlocks $20,000–$50,000 of compliance premium per VLCC. OFAC and ICC Green Documentation framed for Permian operations.
See the pilot path →
For everyone else
Verify a real passport live
The Track a Barrel demo hits our production /verify endpoint from your browser. One demo passport is GREEN; one is genuinely FLAGGED.
Jump to the demo →
Built for a first-visit compliance review
The three things a bank’s vendor-intake team checks before scheduling a call.
US-incorporated
Sovereign Ledger LLC, a Texas limited liability company. Legal identity, founder, and contact path are published on /about.
Ed25519 signatures
Every Digital Passport and Audit Bundle is signed with Ed25519. Verify against /.well-known/jwks.json with any standard JOSE library.
RRC-backed data
Attestations are grounded in Texas RRC Form PR and Severance Master data, not declarant self-report. See /how-it-works for the four live compliance gates.