Lab · A real on-chain tool
MobickVaultLock-up, by your own hand
Lock coins so that not even you can spend them until a set number of blocks has passed — without handing them to an exchange or anyone else. It uses Bitcoin’s built-in time lock (OP_CHECKSEQUENCEVERIFY), so once locked, nobody can change the rules.
Everything runs in this browserAddress derivation and signing happen on this page. Only lookups and, when unlocking, the signed transaction go out.
Practise small firstLock something tiny like 0.01 BMB for about a day and unlock it. Before the period ends, nobody can take it out.
Use a paper walletUnlocking needs the private key (WIF). Use a paper-wallet address whose key you hold.
1Find your public key
A vault is locked to your public key, which appears in any transaction you have sent from your address. Enter your paper-wallet address or the TXID of a transaction sent from it. No private key is needed here.
If the address has never sent coins
A receive-only address has no public key on chain yet. Send a tiny amount (e.g. 0.001 BMB) from it to itself in your wallet app, wait for it to be mined (about 10 minutes), then search again. Use an address whose private key (WIF) you hold directly, like a paper wallet; app-generated wallets can make the key hard to export later.
2Create the vault
Vault address — send BMB here to lock it
Save the vault address, lock type and period (blocks) somewhere safe. You will need them to unlock. Practise first with a tiny amount: lock it, then unlock it.
Show the locking script
3Check the vault · Hall of fame
Enter the vault address and lock details to read the locked BMB and unlock times from the chain.
Add to the hall of fame
The server recomputes the vault address from the key, type and period and checks there is BMB locked before listing it. One entry per vault; first come, first served.
Hall of fame
| # | Nickname | Locked BMB | Period | Words | Vault |
|---|
4Unlock
Send the BMB from a matured vault back to any address. Signing happens only in this browser; only the signed transaction goes out. Vaults made on the old mobickvault.com unlock here too.
The key is used only to sign; it is never stored or sent. After unlocking, move any remaining coins from that paper wallet too, and retire it.
FAQ
- Can I unlock a vault made on the old mobickvault.com?
- Yes. It uses the same locking script and address format. This was confirmed against old vault unlocks recorded on chain, whose signatures verify with the same computation. Enter the vault address, period and paper-wallet key in step 4; if you forgot the period, leave it blank and it is found from your key.
- Can the operator touch my coins?
- No. The vault address is fixed by your public key and the period alone, and only your private key can sign the unlock. This site stores no keys; even if it disappears, the same computation unlocks the vault anywhere.
- Can I take coins out early?
- No — that is the point. Before the period ends nobody can move them, not even with the key. Practise with a tiny amount and a short period first.
- What is the hall of fame?
- A record of people who locked their own coins. Only the nickname and a few words are stored; amounts and periods are read from the chain each time. Rank is locked BMB × days. Once a vault is emptied it shows 0.
How time locks work: the time locks lesson → · Moved here from the old mobickvault.com (March – October 2026).