中本

Self-custody wallet · Android & iOS

NAKAMOTO

The origin of your money should sit at the center — with you. Keys generated on your device. No accounts. No custodians. Your seal, and no one else's.

SIGNED. SEALED. YOURS.

Download APK How it works

9:41●●●

TOTAL BALANCE

1.4205 BTC

142,050,000 sats · ≈ $148,210

Send

Receive

Bitcoin

1.4205

+2.4%

Ethereum

12.08

+1.1%

CRYPTOS

4,200

+5.7%

What it does

Everything in one seal

機能

One app. Five capabilities. All sovereign.

◈

Self-Custody Wallet

Your seed phrase is generated on-device and encrypted with Argon2id + AES-256-GCM before it ever touches storage. No server ever sees your keys. Send, receive, and swap across EVM and Cosmos chains from a single HD wallet.

BIP-39 · BIP-44 · EIP-55

✉

E2E Encrypted Messaging

Direct messages and group channels use the Signal protocol — X3DH for key exchange and Double Ratchet for forward secrecy. Every message is sealed before it leaves your device. The server never sees plaintext.

X3DH · Double Ratchet · Sender Key

⬡

Built-in dApp Browser

A full Web3 browser with window.ethereum injection, EIP-1193 and EIP-6963 support. Resolves .cryptos and .hermes names on-chain. Every connect, sign, or transaction surfaces an approval sheet before your wallet acts.

EIP-1193 · EIP-6963 · On-chain DNS

◎

AI Assistant

An on-board assistant helps you understand transactions, fees, and dApps in plain language. It is architecturally isolated from your encrypted messages — it can only see public channel content you explicitly share.

Privacy-isolated · Plain-language fees

⚖

Governance & Treasury

Vote on-chain from your phone. The governance dashboard surfaces active proposals, your voting power, and delegate status. The treasury dashboard shows community funds and recent decisions — all signed with your key.

On-chain voting · Delegation

⇄

Cross-Chain Bridge

Move assets between EVM and Cosmos networks directly from the wallet — no third-party bridge site needed. Fees are shown in plain language before you sign. The bridge contract is audited and open source.

EVM ↔ Cosmos · Plain-language fees

Getting started

Set up in under a minute

始め方

Step 01

Install

Download the APK directly from this page. No app store account needed. Install on any Android device running 8.0+.

Step 02

Create or import

Generate a fresh 12-word seed phrase, or paste an existing one to import a wallet you already control.

Step 03

Back up

Write your seed phrase down. That's it. No cloud backup, no email recovery — the phrase is your wallet, full stop.

Step 04

Withdraw & press your seal

Send your coins from the exchange to your new address. Your keys, your coins. Signed. Sealed. Yours.

Under the hood

The technology

技術

Every layer is chosen for sovereignty, not convenience. If we disappeared tomorrow, your money wouldn't notice.

Key Management

BIP-39 mnemonic — 12 or 24 word seed phrase, generated with OS-provided entropy
secp256k1 HD derivation — BIP-44 paths for EVM (m/44'/60') and Cosmos (m/44'/118')
Argon2id keystore — passphrase-stretching before AES-256-GCM encryption on disk
Android Keystore / iOS Secure Enclave — hardware-backed key wrapping on supported devices
Biometric unlock — Face ID / fingerprint gates the keystore decryption, not a PIN fallback

Messaging Cryptography

X3DH — Extended Triple Diffie-Hellman for asynchronous session establishment
Double Ratchet — per-message forward secrecy; compromise of one key doesn't expose past messages
Sender Key — efficient group messaging without per-member re-encryption at each send
X25519 / AES-GCM — via CryptoKit on iOS, BouncyCastle on Android

Signing & Transactions

EIP-191 personal_sign — personal message signing with Ethereum prefix
EIP-712 typed data — structured data signing for dApp interactions
EIP-1193 provider — injected window.ethereum for full dApp compatibility
EIP-6963 multi-wallet — announces the wallet to dApps without global variable conflicts
Cosmos amino/direct — native Cosmos SDK transaction signing via bech32 addresses

Platform

Kotlin Multiplatform — one shared codebase for Android and iOS, no React Native or Flutter
Compose Multiplatform — native-performance UI from shared Kotlin on both platforms
Ktor — Kotlin-native HTTP/WebSocket client, no Java-only dependencies
SQLDelight — type-safe SQL compiled to Android SQLite + iOS SQLite
UnifiedPush / APNs — no Firebase; Android uses a self-hostable ntfy distributor

// Wallet interface — commonMain interface CryptoWallet { fun generateMnemonic(): String fun evmAddress(mnemonic: String): String fun cosmosAddress(mnemonic: String): String fun encryptMnemonic( mnemonic: String, password: String ): EncryptedKeystore // Argon2id+AES-GCM fun signEvmTransfer(...): String fun signTypedData(...): String }

Supported networks

Multi-chain, one key

ネットワーク

One BIP-44 seed phrase derives addresses across all supported networks. Switch chains from the wallet's network picker — no new wallets to manage.

Bitcoin

Ethereum

Polygon

Avalanche

BNB Chain

Arbitrum

Optimism

Cosmos Hub

Cryptos Chain

Solana

EVM RPC endpoints are configurable · Cosmos chains added via chain registry · Testnet toggle in network picker

Privacy by design

What we don't collect

プライバシー

✕No accounts

There is no username, email, or phone number. You identify yourself to the network with a cryptographic key — nothing more.

✕No key upload

Your seed phrase and private keys are generated on your device and never transmitted. If you lose your phone, your backup phrase is your wallet.

✕No plaintext messages

Messages are encrypted before leaving your device. The relay server stores only ciphertext. Even we cannot read your conversations.

✕No Firebase

Android push uses UnifiedPush (ntfy), not Google Firebase. You can self-host your push relay. iOS uses Apple APNs — no Google services involved.

✕No tracking

No analytics SDK, no crash reporter phoning home, no ad network. The app makes no network calls except to your wallet's own RPC endpoints and the relay you configure.

✕No trust required

If the backend disappeared tomorrow, your wallet and message history on your device remain intact. The keys are yours, not ours.

Get Nakamoto

Press your seal.

Download the Android APK directly — no Play Store account needed. iOS is coming soon. Sideload in seconds: download, allow installs from unknown sources, install.

NAKAMOTO WALLET · v1.0 · ANDROID 8.0+ · ARM64 + X86_64

iOS · App Store

Coming Soon

SOON

Sideloading on Android: Go to Settings → Apps → Special app access → Install unknown apps, select your browser or file manager, and enable it. Then open the downloaded APK. You can disable that permission again afterwards.