Show HN: Shardium – open-source "Dead Man's Switch" for crypto inheritance

4 pointsposted 12 hours ago
by maxcomperatore

4 Comments

ycombinatrix

10 hours ago

I prefer to do a 4 shares / 2 needed for recovery.

I keep 2 on different storage media, 1 with a trusted beneficiary, 1 with a different trusted beneficiary.

This does mean that the beneficiaries can collude to rob me tho. But it is simpler than running & trusting some kind of live service imo.

maxcomperatore

9 hours ago

running 4-of-2 definitely removes the service dependency.

you highlighted exactly the "bug" i wanted to patch though: the collusion risk. if beneficiary A and B have a beer together, you get rugged.

the "live service" here acts purely as a time-lock. beneficiaries can't collude to rob you today because the 3rd shard isn't released until the dead man's switch actually triggers. it protects you from your own friends.

ycombinatrix

4 hours ago

You should consider highlighting that this can be used for way more than crypto wallets. The seed phrase can be used to restore a GPG key, a FIDO2 authenticator including SSH/WebAuthn, etc.

reachableceo

7 hours ago

Why not use Vaultwatden for this ? It has a built in dead man switch recovery system.