All client results
Sports predictions and fantasy · Product team running contests, wallets and region rules
Trusted Predictions
Contest entries, the wallet and region eligibility sit on a ledger with a full history, so an ineligible entry cannot create a payout whatever the screen shows.
The challenge
What was slow, manual, or holding them back
Users get predictions, enter contests and manage a wallet. Different regions have different rules about who can play. The wallet was a single balance with no history, and eligibility was checked only in the interface — one screen bug away from an ineligible user placing a real-money entry.
Full trailEvery wallet movement, not a single balance
0Ineligible entries settled
TransactionWhere region rules are enforced
What we built
The workflows that went into daily use
- A predictions feed and contest entry flow
- A double-entry wallet with a full audit trail
- Region rules enforced on the transaction, not the screen
- Settlement and payout workflows
The results
0 ineligible entries settled
Trusted Predictions runs contests with a ledger it can hand to an auditor, and region rules that a client-side bug cannot bypass.
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