Lock a coin. Prove it.
Lock any amount of a Solana coin until a date you choose. Until then nobody can move it, including you. When the date comes, it goes to the wallet you named and nowhere else.
Anyone can check a coin's locks here without a wallet. Every lock and every release is gated by Phil's upload server, running on Solana.
Check a coin's locks
Paste a coin's address. This reads straight from Solana and needs no wallet.
Lock tokens
You need a Solana wallet set to devnet. Your wallet only signs; this page sends the transaction.
Your own wallet unless you change it. This cannot be changed later.
How it works
The terms go through Phil
The amount, the date and the receiving wallet are uploaded to the program in Phil's upload protocol. Phil's server checks them byte for byte. If it accepts, Solana's own token program moves the coins into an escrow account, and the terms are written once.
Nobody holds the key to the escrow
The escrow is controlled by an address that only the locker program can sign for. The program has two instructions: lock, and release after the date. There is no third.
Anyone can release it when the time comes
After the date, any wallet can send the release. The coins can only go to the receiving wallet named at the start, so it does not matter who presses the button.
Before you rely on it
- This is on devnet and has not been audited. It is tested here, against Solana's real token program, and on devnet, but nobody independent has reviewed it. Do not treat it as safe for real value yet.
- The program can still be replaced. On devnet our deploy key can upgrade it, which is how we fix things while building. A lock is only as strong as its program, so "nobody can unlock early" becomes fully true only once the program is made permanent. We will say so here when it is.
- A coin's issuer may still have powers over it. If a coin has a freeze authority, its issuer can freeze the escrow and the coins would be stuck. Coins whose issuer can move anyone's balance, or that need a transfer hook, are refused.
- One date, all at once. There is no gradual release yet.
- Locking supply does not make a coin safe or valuable. It shows one thing: these coins cannot move before this date.
Where Phil is in this
Locking and releasing are both uploads through UploadServer, the function Phil's compiler backend emits. Phil's code checks the handshake, the policy and that the bytes match their declared SHA-256, and only then does the locker act. The locker's own logic (the escrow, the checks on the coin, calling the token program) is ours and is not Phil.
The program and its tests are in locker/. This is a community project and is not affiliated with Phil or Solana.