Press & Media Kit
Everything a reviewer or writer needs to cover ArcSign accurately. Copy any of it. All facts below are current and verified against the open-source codebase.
One-line description
ArcSign is a free, open-source USB cold wallet you can audit instead of trust.
Boilerplate (2 sentences)
ArcSign is a free, open-source (Apache 2.0) USB cold wallet for desktop. It turns any standard USB drive into offline cold storage for 7 EVM chains, with the keys protected by XOR three-shard + AES-256-GCM encryption and reproducible, auditable builds — at $0, versus $79–$249 for a hardware wallet.
Key facts
| Category | USB cold wallet (desktop app) |
| Price | Free — $0. Optional Pro: 30 USDT/year (NFT membership) |
| License | Open source, Apache 2.0 |
| Source code | github.com/arcsignio/arcsign |
| Reproducible builds | Yes — verify SHA-256 against published SHA256SUMS |
| Platforms | macOS, Windows, Linux |
| Chains | 7 EVM: Ethereum, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche (no native Bitcoin) |
| Key storage | XOR three-shard + AES-256-GCM on USB; reconstructed only in mlock-protected memory for 1–5 ms while signing |
| Backup | AES-256-GCM encrypted .arcsign file (no paper seed phrase) + optional 12/24-word BIP-39 mnemonic |
| Balances | Key-free on all 7 chains (public RPC + Multicall3 + DefiLlama prices) |
| Notable features | Clear-signing (local EIP-712/calldata decode), free OFAC/malicious-address blacklist check, WalletConnect v2, DEX swap aggregator, token-approvals manager |
| Downloads | GitHub Releases |
How ArcSign is different
- Free vs $79–$249. Same offline-key cold storage as a hardware wallet, on a USB you already own.
- Auditable, not trusted. Fully open source with reproducible builds — clone, rebuild, and confirm the hash matches.
- No firmware, no supply chain. Runs on your OS; no proprietary chip and no firmware update that could change key handling.
- Encrypted backup. The
.arcsignfile is AES-256-GCM encrypted on export, so a stolen backup isn't a stolen wallet — no fragile paper seed.
Logos
Comparison snapshot
| Wallet | Cost | Type | Open source |
|---|---|---|---|
| ArcSign | Free | USB cold wallet | ✓ Apache 2.0 |
| Ledger Nano X | ~$149 | Hardware | ✗ |
| Trezor Model T | ~$219 | Hardware | ✓ |
| Tangem | ~$55 | NFC card | Partial |
Links & contact
- Website: arcsign.io
- GitHub: github.com/arcsignio/arcsign
- X / Twitter: @ArcSignWallet
- Security: security@arcsign.io