Time-locked bitcoin
Send bitcoin
forward in time.
Choose a recipient and a date. Your coins move to an address that the Bitcoin network itself refuses to unlock until that moment arrives - then they are delivered automatically.
No password. The network holds it shut; we hold the key that opens it.
Example lock
The guarantee
The lock is a rule.
The delivery is a promise.
Most services that hold your coins ask you to trust a database row for everything. We hand the hardest part - nobody touching your coins early - to Bitcoin itself, and stay straight with you about the rest.
Every transfer gets its own address, built from this
<unlock time> OP_CHECKLOCKTIMEVERIFY OP_DROP <our key> OP_CHECKSIG
Until the unlock time passes, that script cannot be satisfied by anyone. Not by you, not by us, not by someone who steals our keys. Bitcoin nodes reject the transaction outright.
After it passes, that key is ours alone. We sign the payout to the recipient you fixed at the start - but consensus has stopped protecting you by then, so delivery is us keeping our word. A long lock is a long bet on us. The risk page spells out exactly what that means.
How it works
Set the terms
Enter the recipient address and the exact date and time. This is the only moment these can be decided.
Get your address
We generate an address unique to this transfer, with your unlock time compiled into it.
Send your bitcoin
Deposit any amount. The moment it confirms, nobody can move it early - us included.
It delivers itself
When the timelock expires we build, sign and broadcast the payout automatically.
Pricing
One fee, taken on delivery.
Priced in bitcoin, so there is nothing to convert and no exchange rate to argue with.
The Bitcoin network's own mining fee is charged separately at delivery, at whatever the going rate is that day. We show it to you before it is taken.
Decide once. Then let it go.
A gift with a date on it. An inheritance that arrives on its own. Savings you genuinely cannot touch at 2am.
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