lockunspent (wallet command)

lockunspent unlock ( [{"txid":"hex","vout":n},...] persistent )

Updates list of temporarily unspendable outputs.

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

Arguments

1. unlock                  (boolean, required) Whether to unlock (true) or lock (false) the specified transactions
2. transactions            (json array, optional, default=[]) 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
       },
       ...
     ]
3. persistent              (boolean, optional, default=false) Whether to write/erase this lock in the wallet database, or keep the change in memory only. Ignored for unlocking.

Result

true|false    (boolean) Whether the command was successful or not

Examples

List the unspent transactions
> bitcoin-cli listunspent 

Lock an unspent transaction
> bitcoin-cli lockunspent false "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]"

List the locked transactions
> bitcoin-cli listlockunspent 

Unlock the transaction again
> bitcoin-cli lockunspent true "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]"

Lock the transaction persistently in the wallet database
> bitcoin-cli lockunspent false "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]" true

As a JSON-RPC call
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "lockunspent", "params": [false, "[{\"txid\":\"a08e6907dbbd3d809776dbfc5d82e371b764ed838b5655e72f463568df1aadf0\",\"vout\":1}]"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/