lockunspent

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

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. Nodes start with zero locked outputs, and the locked output list is always cleared (by virtue of process exit) when a node stops or fails.

Also see the listunspent call

Argument #1 - unlock

Type: boolean, required

Whether to unlock (true) or lock (false) the specified transactions

Argument #2 - transactions

Type: json array, optional, default=empty array

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
  },
  ...
]

Result

Name	Type	Description
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}]"

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/