John MacMenamin
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Block.One · 2019

Block.One — B1 Design

Identity, Design System & Product Design

Block.One — B1 Design cover
Duration
18 months
Role
Head of Product Design
Team
Product Designers, Engineers, Brand Strategists
Tags
Product Design, Design Systems, Blockchain, EOSIO, Brand Identity

Design leadership across the Block.One product ecosystem, spanning brand identity, design systems, and product experiences built on the EOSIO blockchain. Architected the Epidote design system of 40+ production components that unified Voice and Bullish Exchange, with Voice launching on iOS, Android, and Web in 2020.

Overview

Block.One was the company behind the EOSIO blockchain protocol — one of the most advanced public blockchains built for speed, scale, and developer accessibility. As Head of Product Design, I led design across B1's growing product ecosystem, from brand identity to design systems to the flagship social and financial products.

B1 launch event
B1 launch event
B1 identity work
B1 identity work

The Epidote Design System

One of my most significant contributions at B1 was architecting and leading Epidote — the internal design system built to unify product experiences across Voice and Bullish Exchange. It established a shared visual language: color tokens, typography scales, iconography, and interactive component patterns that scaled across web, mobile, and blockchain-native interfaces.

Epidote
Epidote

Outcome

The Epidote system shipped 40+ components to production and was a force multiplier, enabling rapid iteration without sacrificing consistency. Voice launched on iOS, Android, and Web in 2020.