How a BRL Stablecoin Issuer Custodies Client Tokens: MPC, Multi-Approval and Segregated Wallets

The technical custody of a Brazilian real stablecoin and the legal protection of its reserves are two different layers. The reserves sit in a bankruptcy-remote structure with a collateral agent. The tokens themselves are held under custody infrastructure, and the controls worth checking there are key management, approval requirements, administrative access and wallet segregation. Crown, which issues the BRLV stablecoin, documents each of them.

The custody infrastructure

BRLV held at Crown is custodied on the institutional custody infrastructure provided by Fireblocks, a global digital-asset custody platform used by more than 1,800 institutions, including banks, asset managers and exchanges. The custody layer is the operational security of the tokens, separate from the reserve structure that backs them.

Multi-party computation for keys

Key management uses multi-party computation (MPC). Private keys never exist in complete form: they are split and processed in separate environments, which removes the single point of failure that a whole private key represents. A counterparty evaluating a custody setup can ask whether keys are ever assembled in one place.

Independent approvals and restricted access

Any movement of assets requires multiple independent approvals. Administrative access is restricted to designated administrators, with continuous monitoring and logging. These controls determine who can move funds and under what conditions, and they are the part of custody that an institutional client reviews most closely.

Segregation by client

Wallets are individualized per client, which keeps one client’s assets segregated from another’s at the custody layer. Holders are not restricted to Crown’s wallet management: BRLV can be held in the client’s own wallet of choice, including wallets external to Crown. Where the token can sit across networks and self-custody is covered in where a Brazilian real stablecoin can be held.

What custody does not cover

Custody secures the movement of tokens. It does not, by itself, prove the backing. Reserve verification is a separate discipline, and the compliance checks on counterparties are another, described in AML and KYC controls at a BRL stablecoin issuer. The mechanism that keeps the token at one real is explained in how a Brazilian real stablecoin holds its peg. Technical specifications and contract addresses are published in the whitepaper at docs.crown-brlv.com.