Show HN: Kosign – Cold storage vaults with social recovery

2 morriskosign 0 7/2/2025, 8:15:31 PM kosign.xyz ↗

I built Kosign because I wanted peace of mind knowing that my family can recover my seed phrase in the event that something ever happened to me.

Using threshold cryptography (e.g. 2-of-5), Kosign creates an encrypted vault and splits the decryption key into shares that can be printed on paper or loaded to USB drives and distributed across people or locations (e.g your spouse, lawyer, etc).

Open source unlock tool: github.com/xxbtc/kosign-unlock Live app (no signup, works offline): kosign.xyz

Would appreciate any feedback.

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Show HN: Kosign – Cold storage vaults with social recovery

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