Today while browsing the internet, I discovered in the SIGN document that Bhutan's national digital identity system completed three on-chain migrations in two years, yet few people have paid attention to the actual impact this has on hundreds of thousands of citizens' credentials.
The country's SSI identity system has operated on Hyperledger Indy and Polygon, and is set to migrate to Ethereum in Q1 2026, carrying key credentials such as the identity and educational qualifications of hundreds of thousands of citizens. The project claims this is a pragmatic platform choice that can flexibly adapt to performance and security needs.
In theory, W3C credentials possess chain independence, but the trust registry binds to the public chain, requiring re-anchoring during migration, which presents a verification gap. The white paper does not disclose migration details, which is precisely the landing issue that government decision-makers are most concerned about.
The Bhutan case demonstrates that SSI can be scaled effectively, but high-frequency migrations also reflect that the underlying infrastructure is still iterating.
This precisely highlights the core value of SIGN: addressing the pain points of cross-chain identity migration and stable verification of credentials. With the acceleration of global digital sovereignty, countries are experiencing an explosion in demand for portable and highly compatible identity infrastructure. SIGN, with its mature national-level implementation experience and technological accumulation, has vast growth potential in the future.