Self-Custody · Android · HAC & HACD

Your Keys,
Your Hacash

A self-custody wallet for the Hacash blockchain. Manage HAC & HACD collectibles, send, receive, and trade on the built-in atomic-swap marketplace — all from your Android device.

Wallet home
HACD collectibles
Marketplace
Send HAC
QR Receive
🔐 Self-Custody
🤖 Android Native
💎 HACD Collectibles
🛒 Built-in Marketplace
🌍 6 Languages
⛓️ Atomic Swaps
QR Payments
🔑 Private Key Export
🔐 Self-Custody
🤖 Android Native
💎 HACD Collectibles
🛒 Built-in Marketplace
🌍 6 Languages
⛓️ Atomic Swaps
QR Payments
🔑 Private Key Export
Core Features

Everything you need
to manage Hacash

From simple transfers to complex HACD collectible trading — the full Hacash ecosystem in your pocket.

🔐

Advanced Security

PIN-based unlock with PBKDF2 hardening, Android Keystore-backed encryption, session auto-lock, and local signing — your keys never leave the device.

💸

HAC & HACD Transfers

Send HAC or HACD with configurable fee profiles — Low, Normal, Fast or Custom. Batch transfer multiple HACDs in one transaction.

QR Payments

Generate dynamic payment QR codes with optional amount pre-fill, or scan directly from the send flow for fast contactless transfers.

💎

HACD Visual Explorer

Browse your diamond collectibles in a rich visual grid. Sort by rarity, name or number. Filter by initial letter or shape — Diamond, Heart, Hexagon and more.

🛒

Integrated Marketplace

Create sell offers, browse listings with price and shape filters, and complete atomic-swap purchases — trustless, on-chain, no custodian required.

🌍

Multilingual UI

Available in English, Español, Русский, 日本語, 中文, and Türkçe. Auto-detects system language with in-app switching from Settings.

HACD Collectibles

Your diamond
collection, visualized

HACD are unique on-chain collectibles minted through Hacash proof-of-work. Each diamond has a name, rarity tier, shape, and full provenance recorded permanently on-chain.

  • Visual Grid Browser All your HACDs at a glance with rarity badges and shape previews.
  • Sort & Filter Order by name, number or rarity. Filter by initial letter or shape type.
  • Full On-chain Metadata Born block, miner, owner, inscriptions, bid fee, rarity tier — all in one view.
  • Batch Transfer Select multiple HACDs and send them together in a single transaction.
HACD collection grid
HACD filter
HACD detail
Marketplace browse
My offers
Offer detail
Requests
Marketplace

Trade HACD with
atomic swaps

The built-in marketplace lets you buy and sell HACD directly from the app using trustless atomic-swap contracts on the Hacash blockchain — no custodian ever holds your assets.

  • Create Sell Offers Pick your HACDs, set a HAC price, and publish to the marketplace in seconds.
  • Advanced Filters Filter by price range, HACD count, letter or shape. Sort by expiry, price or newest.
  • Atomic Swap Flow Buyer signs first, seller confirms — funds are only exchanged when both parties commit.
  • Request Management Track incoming and outgoing purchase requests with 48-hour expiration windows.
Security Model

Built secure
from the ground up

Your private keys are encrypted at rest, never uploaded, and all signing happens entirely on your device.

🗝️

Keystore-Backed Storage

Secrets are protected by Android Keystore primitives — hardware-backed encryption where supported by the device.

🚫

No Key Upload

Private keys and mnemonics stay on-device. The app only contacts blockchain nodes for data — never for key custody.

✍️

Local Transaction Signing

All transaction signing happens in-app. Sensitive key material never reaches remote services.

🔢

PIN Hardening

PBKDF2 key derivation with per-account salt and progressive rate limiting to resist brute-force attacks.

⏱️

Session Auto-Lock

Configurable inactivity timeout. Optional PIN gate for sensitive actions reduces risk on unattended devices.

📤

Backup & Recovery

Export your 24-word BIP39 mnemonic or raw private key locally. Full control — no cloud backup dependency.

Ready to start?

Take control of your
Hacash assets

Download the Android app and start managing HAC and HACD with full self-custody — your keys stay on your device, always.