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Overview

Welcome to dWallet Network​

dWallet Network, a composable modular signature network is the home of dWallets. A dWallet is a non-collusive and massively decentralized signing mechanism, used as a building block by builders on other networks to add native multi-chain interoperability to any smart contract.

Unique Value of dWallets​

The dWallet is an innovative Web3 building block that has the following attributes:

  • Non-collusive: The user is always required to generate a signature.
  • Massively decentralized: Besides the user, a 2/3 threshold of a network that can include hundreds or thousands of nodes, is also required to generate a signature.
  • Multi-Chain: Using the default authentication method of blockchains— the signature — dWallets can offer universal and native multi-chain interoperability, without the cross-chain risks of wrapping, bridging or messaging.
  • Cryptographically secure: The security of dWallets is based on cryptography, instead of hardware or trust assumptions.

dWallets are the only way today for Web3 builders to achieve secure, multi-chain interoperability, without the risks of cross-chain and without compromising on the core Web3 values of user ownership and decentralization. As dWallet Network moves closer to its Mainnet launch, it will add support to many L1s and L2s, so builders across Web3 can use it as a composable modular signature network, adding powerful access control capabilities to any smart contract.

Cryptography of dWallets — 2PC-MPC​

dWallets use the 2PC-MPC protocol, a two-party ECDSA protocol we designed specifically for dWallets, where the second party is fully emulated by a network of N parties.

Besides its novel structure, enabling the non-collusive dWallets, the autonomy and flexibility of a permissionless dWallet Network, the 2PC-MPC protocol also dramatically improves upon the latest MPC protocols, allowing the dWallet Network to be scalable and massively-decentralized.

The 2PC-MPC protocol achieves linear-scaling in communication — O(n) — and due to novel aggregation and amortization techniques, an amortized cost per-party that remains constant up to thousands of parties — practically O(1) in computation for the network, allowing it to scale and achieve decentralization, whilst being asymptotically O(1) for the user: meaning the size of the network doesn't have any impact on the user as its computation and communication is constant.

dWallet Network Overview​

dWallet Network is a composable modular signature network forked from Sui, and similarly to Sui, it is maintained by a permissionless set of authorities that play a role similar to validators or miners in other blockchain systems. Changes that were made to Sui include disabling smart contracts, implementing 2PC-MPC, and using the communication in Sui's consensus for the MPC protocol between the nodes.

As a composable modular signature network, dWallets on the dWallet Network are controlled by smart contracts on other L1s and L2s. To allow a smart contract on a certain chain to control a dWallet, state proofs for that chain must be available on the dWallet Network in the form of light clients. An Ethereum light client and Sui state proofs are the first to be implemented, so builders on Ethereum and Sui will be able to use dWallets as building blocks in their smart contracts, followed by many more network integrations to be announced.

The dWallet Network has a native token called DWLT that is used (much like Sui) to pay for "gas" and is also used as delegated stake on authorities within an epoch. The voting power of authorities within this epoch is a function of this delegated stake. Authorities are periodically reconfigured according to the stake delegated to them. In any epoch, the set of authorities is Byzantine fault-tolerant. At the end of the epoch, fees collected through all transactions processed are distributed to authorities according to their contribution to the operation of the system. Authorities can in turn share some fees as rewards to users that delegated stakes to them.

Sui is backed by several state-of-the-art peer-reviewed works and years of open source development that we are building upon with the dWallet Network.

More About dWallet Network​

Use the following links to learn more about the dWallet Network and its ecosystem:

Acknowledgement​

As a fork of Sui, much of the dWallet Network's code base is heavily based on the code created by Mysten Labs, Inc. & Facebook, Inc. and its affiliates, including in this very file. We are grateful for the high quality and serious work that allowed us to build our dWallet technology upon this infrastructure.