# Non-Custodial Wallet Key Management

Source: https://opensigner.dev
Kiwi News: https://news.kiwistand.com/stories/Non-Custodial-Wallet-Key-Management?index=0x69416908c05701fe7d7830749bbc650f71d821c573c04a6a5f58bd310348b3fec645e575
Submitted by joalavedra.eth on 2025-12-16 UTC, 6 upvotes, 0 comments

## Summary

OpenSigner is an open-source, self-hostable key management system that issues non-custodial keys to users. Keys are split 2-of-3 using Shamir's Secret Sharing, so no single party can sign alone. The full key exists only in memory inside a sandboxed iframe and is discarded after every operation. Users can recover keys with a password, passkey, or automatic recovery using OTP, without seed phrases. The project is licensed under MIT and can be run with Docker or split across independent operators.

## Article

An open-source, self-hostable key management system that issues non-custodial keys to your users

Get startedWhy OpenSigner?GitHub

Terminal

git clone https://github.com/openfort-xyz/opensigner.git make build make run

shares2-of-3

custodyuser

licenseMIT

Non-custodial by design

Keys are split 2-of-3 with Shamir's Secret Sharing — no single party can ever sign alone

Ephemeral signing

The full key only exists in memory inside a sandboxed iframe, discarded after every operation

Self-hostable

Run every component yourself with Docker, or split trust across independent operators

No seed phrases

Users recover keys with a password, passkey, or automatic recovery with OTP