Trusted Predictions
A sports predictions and fantasy platform where the wallet ledger and jurisdiction rules matter more than any screen.
What they needed — in their own words
“Users get predictions, enter fantasy contests, and manage a wallet. Different regions have different rules about who can play what — get that wrong once and we're done.”
The system they run on today
- Predictions feed and contest entry flows
- Double-entry wallet with full audit trail
- Region-aware access rules enforced at the transaction, not the screen
- Settlement and payout workflows
Arrived, assessed, hardened
Every Neolen engagement follows the same path: an honest assessment of what's actually there, then the hardening work that makes it a system. Here is how it played out on this one.
What arrived
A gaming product with real compliance exposure: the wallet was a single balance column with no history, and region eligibility was checked in the interface — one client-side bug away from an ineligible user placing a real-money entry.
What the assessment found
The assessment ranked two findings critical: a balance that couldn't be audited or reconciled after a dispute, and compliance rules that existed only as interface logic. In this vertical, either one is business-ending.
What we hardened and shipped
We replaced the balance column with a double-entry ledger carrying a full audit trail, and moved eligibility enforcement into the transaction path itself — an ineligible entry cannot create a ledger movement, whatever the interface shows.
What the client runs on today
Trusted Predictions runs contests with a ledger it can hand to an auditor and region rules that cannot be bypassed by a client-side bug — the compliance surface handled as architecture, not as a checkbox.
Added to the playbook
Ledger-level rule enforcement is now our default pattern for any product where money and eligibility meet, and 'balance without history' is a standing critical finding in the audit harness.
Hit a wall with something you've built?
The audit is fixed-fee and standalone — a plain-language report of what's actually wrong, ranked by risk, yours whether or not you continue.