Most central bank digital currency (CBDC) projects are being designed as improved payment rails — faster, cheaper digital versions of existing fiat money. Brazil's DREX is different. The Banco Central do Brasil is designing DREX from the start as the settlement layer for tokenized real-world assets: a digital real that settles not just payments but the transfer of tokenized government bonds, tokenized real estate, and tokenized agricultural credits in a single atomic transaction.

If DREX works as designed, it will be the most integrated CBDC-RWA infrastructure built by any major economy — not a digital payment system with tokenization added on top, but a unified financial system where money and assets settle together, atomically, on the same ledger.

What DREX Is

DREX — Digital Real — is Brazil's wholesale CBDC, operated by the Banco Central do Brasil. It is not a retail digital currency that consumers hold directly; it is an interbank settlement asset used by financial institutions to settle transactions on behalf of clients. The architecture places DREX on a permissioned blockchain where the central bank is the sole issuer and financial institutions are the participants — similar to the existing reserve account system, but with programmable money and atomic settlement capabilities.

The key innovation is the integration with tokenized assets. In a DREX-enabled transaction, a buyer's digital real and a seller's tokenized bond can swap simultaneously in a single atomic transaction — payment and delivery happen in the same block, with no settlement risk. This is the theoretical promise of distributed ledger technology for securities settlement that has been discussed since 2015 — DREX is building it as operational infrastructure rather than proof-of-concept.

The RWA Integration

Brazil's financial system has characteristics that make it an ideal laboratory for CBDC-RWA integration. The country has a large, liquid government bond market (Tesouro Direto), a massive agricultural finance sector (Brazil is the world's largest exporter of soybeans, beef, coffee, and several other commodities), and a significant real estate market that has historically been illiquid and document-intensive.

The Banco Central do Brasil has designed DREX pilots specifically targeting these asset classes:

  • Tokenized government bonds (Títulos Públicos): Government securities tokenized and settled against DREX, enabling retail access to government bonds with minimum investments far below the current practical minimum
  • Agribusiness receivables (CRAs): Tokenized agricultural credit rights — a major financing instrument for Brazilian farmers — settled against DREX with atomic delivery-versus-payment
  • Real estate receivables (CRIs): Tokenized mortgage-backed instruments settled with DREX, reducing the settlement time and counterparty risk in Brazil's substantial real estate finance market

The pilot program involved eleven financial institution consortia — including Itaú, Bradesco, BTG Pactual, and the Brazilian subsidiaries of international banks — testing different use cases for DREX-settled tokenized assets. The pilot results informed the design of the production system currently being built.

Why Brazil Is Ahead of Most G20 Economies

Brazil has built on an existing advantage: its real-time payment system, Pix, launched in 2020 and achieved 140 million active users within two years — the fastest adoption of any payment system in history. The Banco Central do Brasil built the infrastructure, required all banks to participate, and made it free for individuals. The institutional knowledge and public trust built through Pix created the foundation for DREX.

The second advantage is the Banco Central's technical competence. The DREX system is being built on Hyperledger Besu — a permissioned Ethereum-compatible blockchain — with smart contract functionality that allows complex financial transactions to be programmed as on-chain logic. The bank has published detailed technical specifications and has run transparent, documented pilot programs rather than keeping development behind closed doors.

When DREX becomes operational, Brazil will have something no other G20 economy currently has: a central bank-operated settlement layer that natively handles both digital money and tokenized real assets in the same transaction. The implications for Brazil's financial inclusion agenda — 40 million adults who remain underbanked — and for its commodity finance infrastructure are significant.

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