Record-keeping and reporting software for SAF and SAFc transactions. Designed by Uros Perisic and built by his firm Thalassis Consulting — Goldman Sachs rigour applied to commodity-grade compliance records. It gives clients a clean audit file for their own activity and runs alongside the third-party registry where certificates are issued and retired. Deployable in your own environment. White-label ready.
Tracking, documentation, and reporting — three layers of one record-keeping system, each keeping a client's SAF and SAFc activity aligned to the standards their auditors test against. The registry where certificates are issued and retired is operated by an established third party; the Stack is the client's evidence and reporting layer on top of it.
Chain-of-custody documentation across blended supply chains.
Track certified SAF volumes through blended supply chains in your own records. The engine flags double-counting before it reaches a claim, and keeps every batch, blend, and transfer documented from production to claim.
Built for operators who need to evidence compliance to regulators, not just report it to stakeholders. ISCC EU chain-of-custody requirements are embedded in the accounting logic.
A complete, auditable record of every book & claim certificate.
Keep a full record of each certificate through issuance, transfer, and retirement — all carried out on the third-party registry of record. Every entry ties back to a certified production batch, so what you claim matches what you can evidence.
The Stack is your evidence file, not the registry itself. It gives corporate buyers, producers, and their auditors one verifiable chain from production to claim.
One reporting layer for finance, sustainability, and audit.
Export retirement IDs, carbon-intensity scores, feedstock, and pathway data straight into disclosures, supplier responses, and CDP submissions. No re-keying between teams, no reconciliation gaps.
Reporting is only as good as the records underneath it. Because the reporting layer sits directly on the tracking and lifecycle records, every figure you disclose traces back to a documented batch.
Many record-keeping tools are externally hosted — records, certification data, and audit trails sit outside your jurisdiction with no local oversight. The Stack can be deployed inside your own infrastructure instead.
Deploy the Stack in your own environment and your records stay where they belong — under your jurisdiction. Relevant for government bodies, national energy agencies, and any organisation with data-residency or cybersecurity mandates.
Self-hosting your instance removes third-party hosting dependencies from your record-keeping chain. Audit trails, certification records, and reporting data remain within a controlled perimeter.
GSC's advisory clients use the Stack as part of the engagement — record-keeping and reporting, not a separate software purchase. For anyone who wants their own independent deployment, the full Stack is white-label ready: run it under your brand, in your own environment, for your own market. Producers, traders, platforms, or public bodies — if you need SAF record-keeping you can run yourself, it is available.
Aviation authorities and national energy agencies can stand up SAF record-keeping and reporting without building it from scratch — under sovereign control, in their own environment.
Producers and fuel suppliers can run their SAF and SAFc documentation and reporting under their own brand, keeping their audit file aligned to ISCC EU and CORSIA.
Into-plane service providers and distributors can integrate mass-balance tracking and reporting directly into their own operations.