Why central banks continue to test Chainlink

Core Points

Central banks are testing Chainlink as a connectivity infrastructure rather than using it as an alternative to sovereign currencies or domestic settlement systems.

Experiments in Brazil and Hong Kong coordinated payments, trade documents and asset ownership among multiple independent platforms.

Singapore's "Guardian Plan" shows that tokenized funds can operate in parallel with existing banking and statutory payment infrastructure.

These projects are still in the controlled pilot phase and do not represent permanent adoption or recognition of the LINK token.

This model has appeared in related experiments by the Central Bank of Brazil, the Hong Kong Monetary Authority, Singapore's Guardian Project, Swift, UBS Asset Management, and the U.S. Department of Commerce.

These projects do not amount to widespread adoption at the central bank level. However, they do shed light on why Chainlink continues to appear in public sector and regulated financial experiments.

Greater problems faced by digital currencies after their creation

Central banks can build their own digital currency or tokenized settlement platforms. But the trickier question is how the platform interacts with foreign currencies, commercial banking systems, tokenized funds, trade documents, public blockchains, and existing payment networks.

The Bank for International Settlements found that there is currently no general model that can connect central bank digital currencies. Each jurisdiction has its own legal framework, access rules, policy goals, privacy requirements and technical architecture.

The organization's recent research on tokenization has reached similar conclusions: multiple ledgers are likely to coexist, but fragmented systems can form isolated pools of funds and assets unless institutions develop reliable ways to coordinate transactions between them. The Bank for International Settlements warns that the benefits of tokenization depend not only on technology, but also on interoperability, governance and effective risk management. Its analysis report can be found in the report on payments and financial market tokenization.

Chainlink responds to this problem through a variety of interconnected services: the Cross-Chain Interoperability Protocol (CCIP) transfers messages and tokenized value between separate blockchain networks; the Chainlink runtime environment (CRE) coordinates workflows involving blockchains, APIs, payment messages, and external systems; Data Feeds provide verified external information for smart contracts; and the Automated Compliance Engine (ACE) is designed to apply identity, jurisdiction, and transfer policies before transactions are executed.

As a result, its claims are far broader than the common description of Chainlink as a price oracle. It is trying to become a financial process orchestration layer across multiple technological environments.

Brazil and Hong Kong: Two sovereign platforms are interconnected

In October 2024, the Hong Kong Monetary Authority and the Central Bank of Brazil announced plans to connect Hong Kong's "Ensemble Sandbox" with Brazil's "Drex Pilot" project. This cooperation focuses on cross-border payment-to-payment (PvP) and delivery-to-payment (DvP) settlements. The former coordinates the exchange of the two currencies, while the latter ensures that asset transfers and payments occur simultaneously.

A subsequent trade finance experiment involved Banco Inter Bank, Chainlink and the Global Shipping Commerce Network (GSBN). The experiment connects the Drex environment with Hong Kong's Ensemble infrastructure, a trade finance platform, and an electronic bill of lading system. CRE coordinates payment instructions and converts messages into formats required to participate in the system (including ISO 20022), while triggering external APIs to update electronic bills of lading. CCIP synchronizes events between platforms, allowing contract execution, credit release, payments, and transfer of ownership of traded goods to be part of the same workflow.

This is much more complex than simply sending tokens from one blockchain address to another. Transactions rely on funds, ownership records, bank orders and trade documents changing in the right order between multiple independent platforms. The experiment demonstrated that these operations could be technically coordinated, but did not determine whether the architecture could operate at production scale, how responsibilities would be divided after operational failures, or whether the central bank would use the same infrastructure in a real deployment.

Singapore: Keep existing payment tracks

Another independent experiment explored whether institutions could use tokenized assets without requiring all participating banks to adopt on-chain currencies. In November 2024, Swift, UBS Asset Management and Chainlink completed a pilot under the Monetary Authority of Singapore's Guardian Program. This project enables automatic subscription and redemption of UBS tokenized investment funds. Chainlink coordinates the conditions required to minte or destroy fund tokens, while Swift delivers payment instructions through traditional legal settlement infrastructure that has connected more than 11500 financial institutions.

Therefore, although investment funds are represented through blockchain-based tokens, the payment link remains within the existing bank track. This solves a practical hurdle in institutional adoption: Banks can process transactions involving tokenized funds without having to rebuild their payment stacks or hold specific stablecoins. Institutions can gradually introduce tokenized products while continuing to use existing infrastructure that already meets their operational and regulatory requirements. The pilot involves controlled processes rather than open commercial deployments. Its value lies in demonstrating a possible migration path rather than demonstrating that the model has achieved large-scale market-wide adoption.

Official economic data can now be read by smart contracts

Chainlink's work with the U.S. Department of Commerce involves data rather than cross-border settlements. On August 28, 2025, the U.S. Department of Commerce released the cryptographic hash of its second-quarter GDP release on nine blockchains. Headline GDP data is also included in the network that supports additional data. The department worked with Chainlink and Pyth to distribute information more widely. Subsequently, Chainlink provided six sets of data series from the Bureau of Economic Analysis in ten blockchain ecosystems through its data feed. These data cover levels and annualized percentage changes in the following indicators: real GDP, personal consumption expenditure price index, and actual final sales to domestic private buyers.

The government report is posted on the website and can be read by ordinary people. Standardized on-chain data feeds can be read directly by software. Forecasting markets can use official data to settle contracts; macro-related financial products can calculate payments based on published economic indicators; and loan or portfolio management systems can incorporate the publication into predefined risk rules. The oracle role is not limited to economic data: On June 9, 2026, ADI Predictstreet, the official forecast market partner of the 2026 FIFA World Cup, adopted Chainlink as its exclusive oracle infrastructure to automate market analysis, settlement and payments.

These examples describe potential applications rather than established requirements. The release proves that official government data can be delivered in a format that is consumable by smart contracts; but it does not show that financial protocols are already using these data feeds on a meaningful scale.

Compliance is more difficult than transferring assets

For regulated financial activities, interoperability alone is not enough. Before allowing tokenized assets to change hands, banks may need to confirm the identities of both parties, jurisdictions, sanctions status, investor classification and transfer eligibility. Publishing underlying customer records on a public blockchain will raise serious privacy and data protection issues. Chainlink's Automated Compliance Engine (ACE) is designed to separate compliance results from the sensitive information used to generate results. A trusted authority can issue a certificate confirming that the customer has completed the necessary inspections. The transaction system will receive proof that conditions have been met without having to link the customer's name, passport information, address or complete bank records.

The strategy layer can then decide whether transactions are allowed. Rules may cover investor qualifications, sanctions screening, geographical restrictions, transfer limits or voucher validity periods. ACE does not automatically conform financial products to GDPR, MiCA, Bank Secrecy Act or any other regulatory requirements. Legal compliance still depends on which rules are coded, who provides identifying information, where personal data is stored, how exceptions are handled, and which agency is responsible for the final decision. Its purpose is narrower: to provide institutions with a technical means to translate certain compliance requirements into enforceable trading conditions.

Evidence supports a role, not the ultimate winner

These experiments show that Chainlink can perform several functions related to institutional tokenization: passing instructions between independent blockchain networks; coordinating on-chain and off-chain events; connecting tokenized assets with traditional payment systems; providing official external data to smart contracts; and applying identity and transfer conditions in transactions. But they do not indicate that the central bank has chosen Chainlink as a permanent global infrastructure. Most of the evidence still comes from pilots, sandboxes, technology demonstrations and announcements involving a limited number of institutions. Production systems also need to address issues such as operational resilience, network security, governance, transaction revocation, legal liability, supplier dependence, and external data errors.

The U.S. Department of Commerce has made clear that publishing its GDP data on blockchain does not imply endorsement of any particular blockchain, service or related activity. Therefore, the participation of central banks or government agencies should not be interpreted as support for the LINK token. A more reasonable conclusion is architectural: Central banks and regulated agencies are exploring tokenized finance, but the resulting system is unlikely to consist of a blockchain controlled by a single operator. Sovereign platforms, commercial bank ledgers, public networks and traditional payment tracks are likely to continue to coexist. Chainlink is being tested as a possible way to implement transactions between these boundaries. Whether it becomes a permanent infrastructure will depend less on the number of pilots announced and more on whether these experiments develop into resilient, legally defined and production-scale systems.