Don't Let Your Crypto Die With You
We never move your funds. When verified inactivity and biometric proof confirm eligibility, we transfer access rights to your beneficiaries.
Don't Let Your Crypto Die With You
It solves one of the most critical problems in crypto: "What happens to your assets when you die?"
Unlike traditional solutions that require transferring funds to a third-party or smart contract, Zelf Legacy focuses on access inheritance. We do not move your funds. We securely transmit access rights to your designated beneficiary only upon verified inactivity and rigorous biometric proof.
The Infrastructure
Behind Zelf Legacy
Zelf Legacy is not a simple timeout wallet.
It is an inheritance infrastructure layer powered by cryptographic liveness proofs, decentralized identity, and autonomous execution systems built on Soroban.
Three core components work together to protect rightful ownership without moving funds into custody.
Human-rooted identityfor inheritance claims
Inheritance is not just about wallets. It's about proving rightful ownership and beneficiaries.
Instead of usernames, passwords, seed phrases, or centralized identity providers, Zelf ID uses HumanAuthn biometric cryptography to securely authenticate users and beneficiaries.
The result is an identity layer built for long-term inheritance infrastructure, where continuity across devices, decades, and jurisdictions matters.
01Cryptographic proof oflife — without surveillance
Zelf Legacy replaces passwords, custodians, and tracking with the Heartbeat Protocol – a privacy-focused cryptographic liveness system powered by Soroban smart contracts.
Users periodically confirm activity through the Zelf app, and inheritance execution only begins after verified inactivity and grace periods, turning inheritance into programmable self-custody infrastructure.
Each heartbeat extends the inheritance inactivity window while maintaining:
02Autonomous inheritanceexecutionmonitoring
The Guardian Oracle acts as the execution monitoring layer of Zelf Legacy.
Once heartbeat inactivity and grace periods expire, the Guardian Oracle validates the inheritance conditions and initiates the legal and cryptographic execution workflow.
This creates a controlled inheritance pipeline instead of an irreversible automated transfer. The Guardian Oracle is designed to minimize false execution risks while preserving the non-custodial nature of the protocol.
03How it Works
A secure, private, and automated protocol
Why Zelf Legacy?
Non-Custodial
No funds are ever transferred to a contract. You retain full control until the moment of inheritance.
Privacy First
ZK-compressed heartbeat signals are anonymized. No one knows you have a setup.
Triple Layer Security
Biometric Face Matching + ID Verification + ZK-disclosure ensures only your true beneficiary gets access.
Why choose Zelf's
Proof of Humanity?
Zelf offers unique cryptographic properties
Irreversibility
Biometric data cannot be reconstructed from stored information.
No template, no biometric database risk.
Unlinkability
Authentication events cannot be correlated across services.
Each interaction generates fresh cryptographic material.
Renewability (Revocability)
Compromised randomness? Generate new randomness.
Your biometric identity remains intact.
Unlike static private keys, Zelf's Proof of Humanity generates ephemeral keys.
Stellar Development Roadmap
Three tranches delivering production-grade biometric inheritance infrastructure on Stellar.
MVP — Soroban Inheritance Core
5 weeks
- Soroban inheritance registry contracts
- ZELF ID integration
- Heartbeat Protocol implementation
- Merkle-proof heartbeat verification
- Simulated end-to-end inheritance event on Stellar Testnet
- Public GitHub repo with unit tests, integration tests, deployment scripts
Testnet — Guardian Oracle & Claim Pipeline
6 weeks
- Guardian Oracle Service with Soroban-compatible interface
- Lawyer notification system with fallback to direct beneficiary alerts
- Claim verification pipeline with client-side Zelf ID matching
- Full workflow test: policy creation to seed phrase reconstruction
- Oracle interface specification and security model documentation
Mainnet — SDKs, Wallet Integration & Deployment
6 weeks
- Stellar Wallet SDK (@zelf/stellar-legacy-sdk) for web wallets
- Soroban Contract SDK (zelf-legacy-soroban) Rust crate
- Demo applications: Web Extension, Android, iOS
- All contracts deployed on Stellar Mainnet
- Developer documentation with architecture diagrams and video tutorials
- Onboarding and claim UX flows with usability testing
Why do users love us?
Mélch
@meetmelch
Forget about complicated hardware wallets; @zelfofficial gives you the highest level of security with ZK Face Proof technology...
U10
@u10akaji
You don't want to risk the security of your assets, right? @zelfofficial brings something completely new to the crypto world...
Eddy_Crypt
@eddy_crypt409
@zelfofficial introduces the Seed Phrase Management Solution (SPMS), setting a new standard in security...
Hannah W.
@hannah_hodl
Finally a wallet my family can actually inherit. @zelfofficial solved the one problem nobody else dared to touch...
Tom R.
@tom_onchain
No seed phrases, no stress. @zelfofficial uses my face as the key and it just works across every device...
BaryonMode
@baryon_eth
Self-custody finally feels safe. @zelfofficial brings biometric security without storing a single template...
Sukuna
@king_of_curses
ZK Face Proof + inheritance in one app? @zelfofficial is years ahead of every wallet I've tried...
Mélch
@meetmelch
Forget about complicated hardware wallets; @zelfofficial gives you the highest level of security with ZK Face Proof technology...
U10
@u10akaji
You don't want to risk the security of your assets, right? @zelfofficial brings something completely new to the crypto world...
Eddy_Crypt
@eddy_crypt409
@zelfofficial introduces the Seed Phrase Management Solution (SPMS), setting a new standard in security...
Hannah W.
@hannah_hodl
Finally a wallet my family can actually inherit. @zelfofficial solved the one problem nobody else dared to touch...
Tom R.
@tom_onchain
No seed phrases, no stress. @zelfofficial uses my face as the key and it just works across every device...
BaryonMode
@baryon_eth
Self-custody finally feels safe. @zelfofficial brings biometric security without storing a single template...
Sukuna
@king_of_curses
ZK Face Proof + inheritance in one app? @zelfofficial is years ahead of every wallet I've tried...
Hannah W.
@hannah_hodl
Finally a wallet my family can actually inherit. @zelfofficial solved the one problem nobody else dared to touch...
Tom R.
@tom_onchain
No seed phrases, no stress. @zelfofficial uses my face as the key and it just works across every device...
BaryonMode
@baryon_eth
Self-custody finally feels safe. @zelfofficial brings biometric security without storing a single template...
Sukuna
@king_of_curses
ZK Face Proof + inheritance in one app? @zelfofficial is years ahead of every wallet I've tried...
Mélch
@meetmelch
Forget about complicated hardware wallets; @zelfofficial gives you the highest level of security with ZK Face Proof technology...
U10
@u10akaji
You don't want to risk the security of your assets, right? @zelfofficial brings something completely new to the crypto world...
Eddy_Crypt
@eddy_crypt409
@zelfofficial introduces the Seed Phrase Management Solution (SPMS), setting a new standard in security...
Hannah W.
@hannah_hodl
Finally a wallet my family can actually inherit. @zelfofficial solved the one problem nobody else dared to touch...
Tom R.
@tom_onchain
No seed phrases, no stress. @zelfofficial uses my face as the key and it just works across every device...
BaryonMode
@baryon_eth
Self-custody finally feels safe. @zelfofficial brings biometric security without storing a single template...
Sukuna
@king_of_curses
ZK Face Proof + inheritance in one app? @zelfofficial is years ahead of every wallet I've tried...
Mélch
@meetmelch
Forget about complicated hardware wallets; @zelfofficial gives you the highest level of security with ZK Face Proof technology...
U10
@u10akaji
You don't want to risk the security of your assets, right? @zelfofficial brings something completely new to the crypto world...
Eddy_Crypt
@eddy_crypt409
@zelfofficial introduces the Seed Phrase Management Solution (SPMS), setting a new standard in security...
Protect Your Future
Don't let your assets be lost forever. Set up your legacy today.
Start Your Legacy