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ArcSign v1.4.0

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@github-actions github-actions released this 15 May 05:36
v1.4.0
a6c6528

ArcSign v1.4.0 — Open Source Launch

This is ArcSign's first public release. Apache 2.0 licensed, open source, with reproducible builds.

ArcSign is a USB-only cold wallet for Bitcoin and 6 EVM chains. Private keys
never leave the USB drive. The .arcsign backup file is AES-256 encrypted at
export, so a stolen backup file is not a stolen wallet.

Why this exists

Hardware wallets cost $79–$149, lock you into a specific device, and aren't
something you can carry through a border crossing without questions. Software
wallets are convenient but store keys on a hard drive that any malware can
read. ArcSign is the middle path: install on any USB stick you already own,
unplug it when you're done, and your keys are out of reach of anything
running on the computer.

The original audience I had in mind was people who need to actually carry
their money with them — refugees, journalists in hostile jurisdictions,
people whose bank accounts have been frozen. They don't have time to wait
for a Ledger to arrive in the mail. But the same tradeoffs make sense for
everyone who wants strong cold-storage security at zero hardware cost.

What's in this release

  • Multi-chain HD wallet — Bitcoin + 6 major EVM chains
    (Ethereum, BSC, Polygon, Arbitrum, Optimism, Base)
  • USB-only cold storage — private keys generated and stored only on the
    USB device, never on the host filesystem
  • .arcsign encrypted backup — AES-256 at export, replaces paper seed
    phrases
  • DEX swap aggregator — OpenOcean + KyberSwap parallel quotes, picks the
    best route automatically
  • Token approval manager — view and revoke ERC-20 approvals across 6
    chains. Pro members get batch revoke.
  • NFT gallery — cross-chain ERC-721 / ERC-1155 display
  • DeFi positions — liquid staking (stETH, ankrETH, ankrBNB) with real-time APY
  • WalletConnect — sign transactions from cold storage when connecting to
    dApps
  • Pro membership — optional 30 USDT/year NFT on BSC for advanced features

Downloads

Platform File
macOS (Apple Silicon) ArcSign-macOS-ARM64.dmg
Windows (x64) ArcSign-Windows-x64.msi
Linux (x64) — Debian/Ubuntu ArcSign-Linux-x64.deb
Linux (x64) — universal ArcSign-Linux-x64.AppImage

Also included: libarcsign.dylib, libarcsign.so, arcsign.dll (the Go
shared library that the desktop app loads — published so you can verify the
bundled copy matches).

Verification

Every release ships with SHA256SUMS covering both the installer bundles
and the Go shared library. To verify your download:

shasum -a 256 -c SHA256SUMS --ignore-missing

For full reproducible builds — clone the source at this tag, run
make build-reproducible, and the resulting SHA-256 should match what's
published here. If it doesn't, something was tampered with. See
docs/reproducible-builds.md
for the full procedure.

Install (macOS / Linux)

bash <(curl -fsSL https://arcsign.io/install.sh)

The install script verifies the SHA-256 against the published SHA256SUMS
before installing. Source: install.sh.

Open source

Every official on-chain address (Pro NFT contract, referral contract, swap
referrer) is a compile-time Go constant. They are printed at app startup
and documented at
OFFICIAL_ADDRESSES.md
so you can verify against BscScan.

Known limitations

  • macOS Intel and Linux ARM are not yet built. Open an issue if you need them.
  • The macOS DMG is unsigned (no Apple Developer Program enrollment yet) —
    you'll need to right-click → Open the first time, or run
    xattr -d com.apple.quarantine /Applications/ArcSign.app after install.
  • Windows installer is unsigned (no EV cert yet) — SmartScreen will warn on
    first launch.

These are funding constraints, not technical ones. They'll get fixed as
the project matures.

What's next

See ROADMAP.md.
Mobile companion app, additional chains, hardware wallet bridging are the
next priorities — in roughly that order.

Bug reports, security disclosures, and pull requests welcome.
Thanks for taking a look.

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