lockunspent
Temporarily lock (unlock=false) or unlock (unlock=true) specified transaction outputs.
If no transaction outputs are specified when unlocking then all current locked transaction outputs are unlocked.
A locked transaction output will not be chosen by automatic coin selection, when spending bitcoins.
Manually selected coins are automatically unlocked.
Locks are stored in memory only, unless persistent=true, in which case they will be written to the wallet database and loaded on node start. Unwritten (persistent=false) locks are always cleared (by virtue of process exit) when a node stops or fails. Unlocking will clear both persistent and not.
Also see the listunspent call
Argument #1-unlock
Type: boolean, Required
Description: Whether to unlock (true) or lock (false) the specified transactions
Argument #2-transactions
Type: json array, Optional
Default=[]
Description: The transaction outputs and within each, the txid (string) vout (numeric).
[
{ (json object)
"txid": "hex", (string, required) The transaction id
"vout": n, (numeric, required) The output number
},
...
]
Argument #3-persistent
Type: boolean, Optional
Default=false
Description: Whether to write/erase this lock in the wallet database, or keep the change in memory only. Ignored for unlocking.
Result
Type: boolean
Description: Whether the command was successful or not