Binance, one of the world's largest cryptocurrency exchanges, officially announced on November 10, 2023, the launch of its new Web3 self-custody wallet. Designed to simplify user experience and enhance fund security, the wallet employs multi-party computation (MPC) technology, allowing users to manage their assets across decentralized applications (dApps) without the need to memorize or handle complex seed phrases.
Lowering the Barrier for Self-Custody
Changpeng Zhao (CZ), founder and CEO of Binance, stated in the press release: "To help drive Web3 adoption, we have to identify and plug the gaps between centralized and decentralized systems. Binance’s Web3 Wallet lowers the barriers of entry for users to achieve full self-custody of their assets, and it is an important, convenient bridge towards DeFi empowerment." Previously, CZ had warned users about the risks of self-custody wallets, and this new product directly addresses those pain points.
Richard Teng, Binance's Head of Regional Markets, added that beyond user experience, security was another key focus during development. He emphasized: "Users should be assured that they are interacting with Web3 within a secure and protected ecosystem. By using it, the common stress of worrying about losing one’s seed phrase is removed, allowing more users to experience decentralized applications."
MPC Technology: Balancing Security and Convenience
It is important to note that Binance's wallet is described as "self-custodial" rather than the traditional "non-custodial" wallet. In a non-custodial wallet, users have complete control over the entire private key. Binance's MPC wallet splits the private key into three key-shares, of which two are controlled by the user and one is held by Binance or another service provider. This design reduces single points of failure by distributing the key among three locations while still giving users primary control. The press release explains: "Having the key-shares split across three different locations mitigates the risk of the keys being compromised and reduces the vulnerability of the system."
Powered by Trust Wallet's WaaS
Binance revealed that the new wallet is a practical implementation of Trust Wallet's Wallet-as-a-Service (WaaS) solution. WaaS is a suite of tools that enables third parties to offer Web3-based services to their customers without building an in-house wallet. Trust Wallet claims its white-label implementation reduces development time "from years to months," allowing partners to focus on their core business rather than underlying technical infrastructure.
Trust Wallet was founded in November 2017 in California and acquired by Binance in 2018. At the time, Binance stated that the acquisition would "add an on-chain mobile wallet to the list of Binance services," hinting at future deep integration. Today, that vision has materialized through WaaS technology.
Binance's Web3 wallet is now integrated directly into the Binance App, allowing users to access the decentralized ecosystem from their exchange account. Analysts believe this move will significantly increase the DeFi user base, especially for newcomers who have been hesitant due to the fear of losing private keys. The MPC approach offers a compromise between security and convenience. However, critics note that because users do not control all key-shares, the solution deviates from the absolute decentralization of traditional non-custodial wallets. Users must fully understand the security model before trusting it with significant assets.
Going forward, Binance plans to expand the wallet's capabilities, including support for more blockchains and dApps, and further optimize the MPC mechanism. As the Web3 world continues to grow, the balance among security, convenience, and decentralization will remain a key topic for exploration.