Get Started
Set up trustless inheritance for your Bitcoin/Ethereum in minutes.
What You Need
A Secure Wallet
Hardware or multi-sig-capable wallet for generating keys safely.
Heir Contact
Heir’s public contact for verification and claim initiation.
Your Policy
Choose dead man's switch, quorum (e.g., 2-of-3), waiting period, and documents required.
Packages: One Safe per Heir or Asset Bundle
For clarity and security, create a separate Safe (multisig wallet) for each heir or distinct group of assets (“packages”). This isolates risk, lets you customize thresholds/owners per package, and makes execution simpler.
Choose Your Inheritance Model
Miras offers two different approaches to crypto inheritance. Choose the one that best fits your needs.
Attester Model
A decentralized verification system where staked attesters verify inheritance claims. This model provides strong security through multi-party verification and configurable waiting periods.
Best for:
- Large estates requiring maximum security
- Users who want third-party verification of death
- Complex inheritance scenarios with multiple heirs
How it works:
- Create a 2-of-3 multisig Safe wallet
- Attesters verify claims and contact you before releasing funds
- Configurable waiting period (default 90 days)
- You can cancel claims if you're still alive
Dead Man's Switch
A simple time-based inheritance contract. If you don't interact with the contract for 1 year, your heir can automatically withdraw all funds. No attesters or third parties involved.
Best for:
- Simple, single-heir inheritance
- Users who prefer fully automated solutions
- Smaller amounts or backup inheritance plans
How it works:
- Deploy a simple smart contract with your heir's address
- Send ETH to the contract to fund it
- Any transfer resets the 1-year timer
- After 1 year of inactivity, heir can withdraw everything
Model Comparison
| Feature | Attester Model | Dead Man's Switch |
|---|---|---|
| Verification | Third-party attesters verify death | Automatic after 1 year of inactivity |
| Security Level | High (multi-party verification) | Medium (time-based only) |
| Complexity | More complex setup | Simple, single contract |
| Cost | Higher (Safe creation + attester fees) | Lower (single contract deployment) |
| Cancellation | Can cancel claims anytime | Reset timer by sending any transfer |
| Multiple Heirs | Supported (multiple Safes) | One heir per contract |
| Waiting Period | Configurable (default 90 days) | Fixed at 1 year |
Attester Model in 4 Steps
Generate Keys
Create a threshold multi-sig (e.g., 2-of-3). Retain Key A, plan to give Key B to your heir, and encrypt Key C for protocol escrow.
Configure Policy
Set waiting period, required evidence (e.g., death certificate), and escalation rules.
Encrypt & Escrow
Encrypt Key C locally. Only the ciphertext is stored; plaintext is never shared.
Prepare Heir Kit
Assemble the USB kit with wallet app, public info, and guidance—never store private keys unencrypted.