Lock your Bitcoin until a future date β like a timed safe that only you control.
Simple, secure, no coding β perfect for long-term savings.
Bitcoin, locked by time & math β not by trust. Spend it when the time you've set has been reached.
We've detected your timezone automatically. Confirm or select a different one to ensure accurate time-lock calculations.
Choose when your funds should become accessible. The time-lock uses absolute timestampsβfunds cannot be spent until after this moment.
This key will control the funds after the unlock time. Generate a new key pair with high-quality entropy or enter an existing compressed public key.
This is your spending key. You will need it to unlock and spend your Bitcoin after the time-lock expires. Without it, your funds are LOST FOREVER.
Checklist before continuing:
β I have copied the Private Key (WIF) above
β I have stored it in a secure location (password manager, paper backup, etc.)
β I understand this key is needed to spend my Bitcoin after the unlock time
Generate your SegWit (bc1q...) time-locked Bitcoin address. This address will only allow spending after your chosen unlock time.
You need ALL of them to spend your bitcoin later
Contains all details needed to unlock. Store this file securely!
Before leaving this page: Download the backup file OR copy all 3 essential items above. Without them, your funds cannot be recovered!
Paste the Bitcoin address and the unlock details from when you set the time-lock.
We'll check and tell you if the bitcoin can be spent yet.
Have a backup .txt file? Upload it to auto-fill all fields.
File integrity verified!
MD5: β
File may have been modified
The MD5 checksum doesn't match. The file may have been edited. Please verify the data below is correct before proceeding.
Expected: β
Actual: β
No checksum found in file
This backup file doesn't include an MD5 checksum. It may be from an older version. Data was loaded but please verify it's correct.
Your time-lock has passed! The funds are now spendable.
Important: Make sure to set an appropriate transaction fee. If the transaction doesn't confirm, you may need to use RBF (Replace-By-Fee) or wait and try again with a higher fee.
Enter your private key and destination address to create and broadcast the spending transaction.
Your private key is used locally to sign the transaction. It is never sent to any server.
K or L.
This is the key you need now.KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU...
β
To actually send your funds, you need to broadcast this prepared transaction to the Bitcoin network.
This is the final step: once broadcast and confirmed by the network, the transaction is irreversible. The funds will then arrive at the Bitcoin 'Destination Address' you've give earlier.
Bitcoin sent, transaction broadcast successfully!
β