Compiled: Vernacular Blockchain

This kingdom in the Himalayas is betting on Ethereum to build the world's first national identity system based on a public Blockchain - and in the process, reimagining the relationship between citizens and their data.

This week, the Kingdom of Bhutan in the Himalayas announced its decision to migrate its national digital identity system from Polygon to Ethereum, causing a stir in the blockchain world. This move is planned to be completed before the first quarter of 2026, making this Himalayan nation a pioneer in utilizing public blockchain infrastructure for sovereign identity management.

Ethereum co-founder Vitalik Buterin ( and Ethereum Foundation Chair Aya Miyaguchi ) attended the launch ceremony, indicating that its significance has surpassed mere technical migration. As Aya Miyaguchi mentioned in a post on X, Bhutan becoming “the first country to anchor its national digital identity system on Ethereum” marks a milestone moment for blockchain applications at the national level.

Bhutan did not adopt blockchain for identity management overnight. Its national digital identity ( NDI ) system was launched in 2023, when His Royal Highness The Gyalsey ( became the country's first digital citizen. The system was initially built on Hyperledger, and transitioned to Polygon in August 2024, favored for its zero-knowledge protocols and scalability promises to handle high transaction volumes.

Today, less than a year later, Bhutan has turned to Ethereum again. According to Bhutan's government technology )GovTech( Secretary Jigme Tenzing), this decision is primarily based on enhancing security: “By transitioning to Ethereum, we further strengthen the security of our digital identity.”

Ethereum is the second largest blockchain by market capitalization in the world and the leading platform for decentralized applications. Choosing Ethereum demonstrates Bhutan's long-term commitment to using battle-tested decentralized infrastructure to support key national systems.

Understanding Self-Sovereign Identity

The core of the Bhutan NDI system is the Self-Sovereign Identity ( concept, which represents a paradigm shift in how we think about digital credentials. Unlike traditional identity systems where governments or corporations control your data, SSI empowers individuals to own and manage their own digital identities.

In fact, this means that nearly 800,000 residents of Bhutan can store digital credentials such as driver's licenses, educational certificates, and health records in a secure digital wallet that they control. When accessing government services or proving their identity online, citizens can precisely decide which information to share and with whom, transmitting only the necessary credentials rather than handing over comprehensive personal data.

SSI provides users with greater autonomy over their personal information, allowing them to control who can access and use this information, thus offering a higher level of privacy protection as the data is no longer controlled by centralized institutions. The Blockchain serves as an immutable record for the issuance and verification of credentials, but the key point is that sensitive personal data itself is not stored on the chain. Instead, the authenticity of the credentials is verified through cryptographic proofs without exposing the underlying information.

This architecture addresses several key vulnerabilities in traditional identity systems. Centralized databases create a “honey pot” for hackers: compromising one system could jeopardize the identities of millions. The decentralized platform enabled by SSI allows users to provide only specific details to verifiers through Blockchain and verifiable credentials technology, thereby reducing the risk of identity theft while complying with existing privacy guidelines.

Why choose Bhutan? A small country with great digital ambitions.

For a small South Asian country with a population of less than one million, Bhutan's strong push for blockchain-based identity management seems surprising, but several factors give it a unique advantage in achieving this digital leap. Scale becomes an advantage here—thanks to its compact population, Bhutan can implement and iterate innovative systems faster than larger countries burdened by legacy infrastructure and bureaucratic inertia.

Bhutan's willingness to embrace cryptocurrency and blockchain technology sets it apart from most countries. Bhutan has been actively mining Bitcoin by utilizing its abundant hydropower resources, converting its renewable energy advantage into digital assets. According to data from Bitbo, the country ranks sixth globally in Bitcoin reserves, holding 11,286 Bitcoins worth $1.28 billion; according to data from StrategicETHReserve, it also holds 495.44 Ether.

Bhutan's governance philosophy, guided by “Gross National Happiness” rather than GDP growth, has created space for experimenting with systems that prioritize citizen empowerment and data sovereignty over pure economic efficiency—this aligns naturally with the values of individual autonomy and trust-based governance inherent in the SSI system. By establishing a national blockchain identity system, Bhutan is positioning itself as a potential hub for blockchain innovation and testing in South Asia, with its NDI system possibly serving as a blueprint for other developing countries seeking to transcend traditional identity infrastructure.

Bhutan's choice of Ethereum over other blockchain platforms reflects a dual consideration of pragmatism and philosophical aspects. As one of the most decentralized blockchain networks in the world, with hundreds of thousands of validators, the security provided by Ethereum makes it extremely difficult for any single entity to tamper with identity records. Its strong developer community support and institutional adoption ensure the long-term stability needed for the national identity system. Building on Ethereum also opens the door for interoperability with a vast decentralized application ecosystem, creating possibilities for future innovations across various fields, from decentralized finance to digital governance.

Perhaps most importantly, as Gongkou Cai articulated, “Bhutan's transformation reflects the original intention of Ethereum's design - to empower individuals with sovereignty over their data, to build trust without a central point of failure, and to achieve a human-centered inclusive digital system.” While Polygon offers faster transaction speeds and lower costs, when a country stakes its identity infrastructure on blockchain technology, the foundational layer of security and decentralization that Ethereum provides is ultimately the most important.

Global Background

Bhutan is not the only country exploring the use of Blockchain for national identity systems, although it may be the first country to fully adopt a public blockchain like Ethereum for this purpose.

More than 214 million citizens in Brazil are expected to use Blockchain technology to achieve digital identity. Rio de Janeiro, Goiás, and Paraná will be the first states to issue identification documents on the chain. The Brazilian government has introduced a blockchain network to enhance the security of data sharing between the Federal Revenue Service and civil identity recognition agencies, and to support the operations of the tax authority based on this.

However, Brazil's approach differs from Bhutan in scale and implementation. Bhutan is transitioning to a fully public Blockchain ) Ethereum (, while Brazil's system seems to focus more on data sharing between institutions and may use more permissioned Blockchain architectures.

Vietnam has launched a national-level blockchain called NDAChain for digital identity and records, which has 49 validator nodes, supervised jointly by public institutions and large enterprises, aimed at serving the government and businesses.

NDAKey enables citizens to verify statements about their identity in real time, which is an important part of Vietnam's fight against fraud, impersonation, and scams in the increasingly digital economy.

Vietnam established a comprehensive national Blockchain strategy in October 2024, aiming to create 20 major Blockchain platforms and position the country among the top ten in Blockchain research in Asia. Compared to Bhutan's focus on identity initiatives, this represents a more systematic, government-led approach.

A “human-centered” digital future

Despite the challenges, Bhutan's commitment to blockchain-based identity management represents a reimagining of the relationship between citizens and government in the digital age.

As more aspects of our lives—from healthcare to finance to education—move online, the question of who controls our digital identity becomes increasingly important. Bhutan's answer prioritizes individual sovereignty, achieves security through decentralization, and ensures transparency through open Blockchain infrastructure.

It remains to be seen whether other countries will follow in Bhutan's footsteps. But as the world watches this Himalayan nation implement one of the most advanced national identity systems in history, one thing is clear: the future of digital identity is being written on the Blockchain, one citizen at a time.

For the 800,000 residents of Bhutan, this future will begin in early 2026 with Ethereum.

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