Get safe · for information only
The hash-based vault.
One way to hold SOL today without relying on the kind of key a quantum computer could one day break. Described here so you know it exists. This site does not offer it, and does not move anything into one.
What it is
The Solana Winternitz Vault, published by Dean Little in January 2025, is a program that locks SOL behind a different kind of signature. A normal Solana wallet signs with an elliptic-curve key; this vault uses a Winternitz one-time signature, which is built only from hash functions. Hash functions are not known to be weakened by quantum computers the way elliptic-curve keys are.
- The vault stores a fingerprint (a hash) of its key, not the key itself.
- Spending from it reveals part of that one-time key, so each vault can be spent from once. The program sends the amount you chose, sends the rest to a refund address (meant to be a new vault with a new key), and closes the old vault.
- It protects only what is inside the vault. Ordinary wallets, tokens and fees still use normal keys, and the wallet that pays the vault's fees is still an ordinary key.
Why it is not offered here
We have not found an independent security audit of the vault program. A bug in a vault would lose money for certain, today, to guard against a quantum risk that has not arrived. So this site does not send anything to one. If an audit is published, this page will say so.
What you can do today: move to a fresh address, which gives your funds a key with far less time on record, or rotate a shared wallet's key.
The plan for Solana as a whole
In April 2026 the Solana Foundation described a contingency plan: research Falcon, a compact quantum-resistant signature already built experimentally into the Anza and Firedancer validator software; adopt it for new wallets if quantum computing becomes a credible threat; then move existing wallets over. It also said no change is needed today.