BTC 🇺🇸 $63,993.00 • 🇪🇺 €55,966.00 • 🇳🇬 NGN 88,303,267 • 🇨🇦 CA$89,683.00 • 🇦🇺 A$91,654.00 • 🇯🇵 ¥10,396,075 • 🇨🇭 CHF 51,676.00 BTC 🇺🇸 $63,993.00 • 🇪🇺 €55,966.00 • 🇳🇬 NGN 88,303,267 • 🇨🇦 CA$89,683.00 • 🇦🇺 A$91,654.00 • 🇯🇵 ¥10,396,075 • 🇨🇭 CHF 51,676.00

01 · Overview

COINCUBE

Brand Guidelines · Public Edition

Self-Custody Bitcoin

COINCUBE is a self-custodial Bitcoin application built on the conviction that financial sovereignty is a human right. The brand reflects sumi-e ink wash painting: restraint, calm, and presence. Serious. Not cute.

Core Principles

Ink, Not Vectors

Hand-brushed style. Organic edges, visible texture. Soul over perfection.

Human, Not Robot

Kage is a person: armored, sovereign, real. Organic proportions, genuine presence.

Restraint Over Detail

Sumi-e values what is unpainted. Bold strokes. Negative space matters.

Hard Money, Serious Tone

Bitcoin is not a game. The brand is calm, laconic, and direct.

02 · Logo & Mark

The Cube Mon

The isometric cube is the COINCUBE clan mark, the app icon and primary symbol. Ink wash with a soft white halo that lets it breathe against both dark and light surfaces.

cube-logo-alt.png

Primary Cube Mon

03 · Colors

Color Palette

Three core hues: ink black, Bitcoin orange, paper white. Eight tonal variants for dimensional illustration. No other colors.

Bitcoin Orange

#F7931A

Dark Orange

#D4770E

Light Orange

#FFB347

Ink Black

#050505

Near-Black

#0A0A0A

Dark Gray

#1A1A1A

Paper White

#FFFFFF

Warm Paper

#F5F0E8

04 · Typography

Type System

Three typefaces. IBM Plex Sans for all UI and data. Space Grotesk for the wordmark only. Noto Serif JP for Japanese accents.

IBM Plex Sans

Primary / UI + Data

All UI text, headings, buttons, labels, body copy, addresses, and amounts. Weights: 400, 500, 700.

The quick brown fox

bc1q9h4y7… · btc 0.5243

Space Grotesk

Wordmark Only

Used exclusively for the "COINCUBE" logotype. Weight: 700 Bold.

COINCUBE

Wordmark, never body copy

Noto Serif JP

Japanese Accents

Japanese characters in illustrations and accents only. Never for body copy. Weights: 400, 700.

影

Kage

05 · Wordmark

The Wordmark

Space Grotesk Bold, tracked wide. "COIN" is always Bitcoin Orange. "CUBE" adapts to background.

COINCUBE

Dark background: CUBE in White

COINCUBE

Light background: CUBE in Near-Black

Rule	Spec
Font	Space Grotesk Bold, letter-spacing 0.12em
"COIN"	#F7931A Bitcoin Orange, always
"CUBE" on dark	#FFFFFF White
"CUBE" on light	#0A0A0A Near-Black
Minimum size	14px font. Below this, use cube mark only.

06 · Mascot

Kage 影

Shadow of Satoshi

Kage means "shadow" in Japanese. A samurai seen from behind, face hidden, presence always felt. He does not speak often. When he does, it matters.

"In the age of digital feudalism, where centralized institutions hold the keys to the people's wealth, one warrior walks alone. Forged from ink and lightning, Kage carries no lord's banner. He is not a guardian appointed by authority. He is the shadow that falls wherever sovereignty is claimed."

07 · Downloads & Resources