Designing Scalable Multi-Signature Transaction Flows for Institutional Crypto Wallets

An exploratory case study that adapts a single initiation flow across Ethereum and Solana while addressing multi-sig wallet needs.

My Role

Product Designer

Tools

Figma

Draw.io

Project Context

This project explores the design of a transaction initiation flow for custodial multi-signature (multi-sig) wallets used by financial institutions. It focuses on Ethereum (ETH) and Solana (SOL) to demonstrate how a single UX pattern can scale across different blockchains while handling core transaction details and chain specific considerations.

Objectives

Financial institutions using multi-sig wallets need a clear, auditable, and predictable transaction initation experience. The goals of this exploratory study were to:

Chain-Agnostic Flow

Design a chain-agnostic flow that handles transaction details, signers, and network-specific considerations in a straightforward way.

UX Patterns for Complex Workflows

Explore UX patterns for complex financial workflows, including edge cases like streaming payments, fee selection, and validation errors.

Visual Design Execution

Demonstrate visual design execution, highlighting how the interface communicates critical information to users without overwhelming them.

Note: This study is exploratory and does not include formal user research. It is intended to showcase design thinking, problem-solving, and scalable UX patterns for complex financial workflows.

Assumptions

Approval policies are preset per wallet/transaction type: Users cannot modify the M-of-N approval rules during transaction initiation.
Signers are pre-selected by policy; initiators cannot change them.
Sender already knows the recipient's address and copy/paste it.
Signatures are collected off-chain to reduce network usage and cost efficiency.
The interface will be used on desktop/laptop by financial institution staff, not for retail or mobile users.