Real-world case studies
1. Sierra Leone Digital Identity and Permanent Residency (The Most Mature Case)
Sierra Leone is the first country partner of SIGN.
By scanning the passport with a mobile phone, a privacy certificate can be generated (proving who you are without disclosing personal information). Upon success, one can obtain permanent residency and tax residency status, along with a physical card with a QR code, which can be scanned for on-chain verification of authenticity.
In the future, it will expand to a nationwide digital identity, digital wallet, and on-chain assets, helping many people without IDs to easily conduct business, access benefits, and engage in trade. In simple terms: transforming identity from paper-based to a secure and convenient “on-chain + physical” combination, greatly enhancing government efficiency and the convenience of cross-border living.
2. Abu Dhabi Blockchain Center Cooperation (An Important Gateway to the Middle East)
SIGN has signed a strategic cooperation with the Abu Dhabi Blockchain Center (ADBC).
Middle Eastern countries want to promote digital governance but are concerned about hackers and data breaches. SIGN provides a “sovereign safe” solution: using privacy technology to protect sensitive data while ensuring that important records are safe and verifiable.
The focus is on helping the government with digital documents, automated office processes, identity, and asset verification.
In one sentence: This is a government-level collaboration that allows SIGN to enter the Middle Eastern public system, promoting better integration of stablecoins and governance.
3. Kyrgyzstan National Digital Currency
In 2025, SIGN signed an agreement with the National Bank of Kyrgyzstan to build the Digital Som.
This national digital currency directly serves 7.2 million citizens, allowing interoperability with local stablecoins, supporting secure payments, identity verification, and programmable features (such as automatic benefit distribution).
It also includes a national digital identity system.
Benefits: Helps emerging countries digitize their currency, making it convenient and compliant, without disrupting the existing banking system.
4. Thailand Customs Privacy Verification (Southeast Asia Example)
SIGN has been deployed in Thailand, primarily assisting customs and immigration departments.
Using zero-knowledge technology, users can prove “I am not on the blacklist” or meet conditions without exposing all personal information.
It can also quickly verify passports, visas, and cross-border trade.
Thailand is an important base for SIGN in Southeast Asia, along with Abu Dhabi and Sierra Leone, forming the early three major markets.
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