How Nexvault moved toward controlled MPC wallet operations
A growing crypto exchange wanted clearer wallet controls, signing policy, and ledger records before scaling deposit and withdrawal flows.
What they were up against.
Omnibus wallet controls were becoming hard to defend
The team needed a clearer operating model for user wallets, treasury movement, approvals, and the records behind each transaction.
Building key infrastructure from scratch would slow the product team
MPC signing, wallet provisioning, network events, and ledger records were important, but rebuilding all of them internally would pull engineers away from the exchange product.
Deposits and withdrawals needed continuity
The migration path had to let the team introduce stronger wallet controls without creating confusion for users or operations.
Reconciliation needed to be designed, not patched later
Finance and operations needed one record connecting deposits, withdrawals, internal transfers, fees, and wallet state.
BROsettlement became the wallet, signing, and ledger layer behind the exchange flow.
MPC wallets provisioned through API
Wallet creation moved into a repeatable API flow, with signing policy and Co-Signer checks attached to wallet operations.
Ledger records for wallet operations
Deposits, withdrawals, internal transfers, and fee movements are written into an operating ledger that finance and operations can reconcile.
Policy and fee logic stay configurable
The exchange can model withdrawal rules, fee behavior, and approval paths without hard-coding every operational change.
Network events connected to the operating flow
Broadcast status, confirmations, and wallet events feed the product and operations stack through API and WebSocket surfaces.
How it fits into
their stack.
BroLabel integrated as an API layer between the client's product and the blockchain. Their team kept full control through RBAC — BroLabel handled MPC cryptography, multi-chain nodes, and compliance infrastructure.
Operational outcomes.
We needed stronger wallet controls without turning the exchange team into a custody infrastructure team. BroSettlement gave us the signing policy, event layer, and ledger record we needed.
Ready to launch?
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