Show HN: Shardium – open-source "Dead Man's Switch" for crypto inheritance
2 by maxcomperatore | 0 comments on Hacker News.
Hi HN, I'm Max. I built this because I was terrified that if I die tomorrow, my family gets nothing. The existing solutions were either trusting a centralized custodian or complex hardware setups. Shardium is a client-side tool that splits your seed phrase into 3 shards using Shamir's Secret Sharing. Shard A: You keep. Shard B: You give to a beneficiary (PDF). Shard C: We hold (or you self-host). It works as a dead man's switch: If you are inactive for 90 days (email ping), Shard C is released to your beneficiary. They combine B + C to recover the funds. The Stack: secrets.js-grempe for the math. FastAPI + PostgreSQL backend. Client-side encryption (seed never hits the network). It is 100% Open Source and MIT Licensed. You can self-host it for free ($0), or use the managed version. I'd love your feedback on the security model. Roast my code here: https://ift.tt/dYZfVUD