BTC 🇺🇸 $73,346.00 • 🇪🇺 €62,547.00 • 🇳🇬 NGN 99,653,626 • 🇨🇦 CA$101,537.00 • 🇦🇺 A$103,816.00 • 🇯🇵 ¥11,680,014 • 🇨🇭 CHF 57,886.00 BTC 🇺🇸 $73,346.00 • 🇪🇺 €62,547.00 • 🇳🇬 NGN 99,653,626 • 🇨🇦 CA$101,537.00 • 🇦🇺 A$103,816.00 • 🇯🇵 ¥11,680,014 • 🇨🇭 CHF 57,886.00

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