Multisig

Multisigs short for multi-signature contracts are smart contracts that require multiple parties to approve an action before it can be executed. Instead of relying on a single private key, control is distributed among a group, increasing security, transparency, and collaborative governance.

In the XION ecosystem and broader CosmWasm world, multisigs are commonly used for:

• Decentralized treasury management

• Protocol upgrades or governance decisions

• Secure deployment of smart contracts

• Joint ownership of high-value assets

Multisig Contracts

CW3 is the CosmWasm standard for multisig contracts. There are two main implementations: one for static membership and one for dynamic membership.

Contract	Voter Set Type	On-Chain Proposal Flow	Dynamic Membership	Ideal For
cw3-fixed-multisig	Fixed (K-of-N)	Yes	No	Small, static groups
cw3-flex-multisig	Linked to cw4-group	Yes	Yes	DAOs, evolving teams, flexible governance

1. cw3-fixed-multisig

A straightforward multisig implementation with a fixed list of members defined at instantiation. Features:

• Fixed set of voters with configurable weights

• On-chain proposal and approval tracking

• Simple K-of-N signature logic

• No dependency on external contracts

Ideal for: Small teams or DAOs with a known and unchanging voter set 📦 Repo: cw3-fixed-multisig

2. cw3-flex-multisig

An advanced multisig contract backed by a cw4-group contract for flexible, updateable membership. Features:

• Dynamic voter set via linked cw4-group contract

• Adjustable weights and thresholds

• Allows adding/removing members without redeploying the multisig

• More modular and governance-ready

Ideal for: DAOs and organizations where the voting group may change over time 📦 Repo: cw3-flex-multisig