How Arch Network Enables Multisigs Without Trusted Parties

Bitcoin is strict: it has limited programmability, and multisigs (where multiple people sign off on a transaction) usually rely on fixed, trusted participants. That’s bad — it creates central points of control and isn’t flexible.

What’s wrong with the old way:

Signers are chosen manually.

It’s hard to replace them.

New people need permission to join.

What Arch does differently:
They found a way to make multisigs open to anyone — no central authority needed.

They use two smart protocols:

FROST — makes signing fast and efficient.

ROAST — keeps things running even if someone drops out or lags.

How it stays secure:
The network uses Proof-of-Stake — participants lock up ARCH tokens. The more you stake, the more say you have. That means attacking the system is expensive.

The point:
Arch builds multisigs that anyone can join, without permission. It’s a step toward making Bitcoin more flexible — without giving up decentralization.