SBI Digital Asset Holdings is launching an institutional digital asset custody service called SBI Wa, which will include Sepior’s ThresholdSig software.

SBI Digital Asset Holdings CEO Fernando Luis Vazquez Cao said, “Sepior has proved to be a truly trustworthy and creative partner.” “The digital asset market is rapidly expanding, and we’ve broadened our scope to help other financial institutions enter this space.”

“As we checked our customer’s solution specifications, Sepior once again proved to be the most convincing cryptographic technology for us to incorporate into our wallet and wider digital asset ecosystem.”

The brand for SBI’s digital asset wallet and custody network is SBI Wallet.

It employs MPC for transaction signing, necessitates multi-level approvals, and ensures that all transactions are compliant.

Sepior collaborated with SBI Group to create a wallet focused on Multiparty Computation in 2018. (MPC).

As we explained at the time, MPC for keys allows for shares or fragments of a key to be spread off-chain through various cloud service providers. They come together when a transaction needs to be signed.

It is much more difficult for a robber to snatch the keys if they are broken up. Ivan Damgrd, one of Sepior’s co-founders, practically wrote the book on MPC.


Since then, several other custody companies, including Curv, the digital asset custody company purchased by Paypal, have followed suit.

Meanwhile, when it comes to digital assets, SBI is one of the most involved institutions. The BOOSTRY platform recently introduced a retail security token offering (STO) of bonds issued by SBI Securities.

It participates in several digital asset exchanges. One is a Singapore-based joint venture with the Swiss stock exchange SIX. Another is in collaboration with SMBC in Japan. In addition, it is a shareholder in the Stuttgart Digital Exchange.

However, it engages in far more behaviours than these.