Importaddress

importaddress "address" ( "label" rescan p2sh )

Adds a script (in hex) or address that can be watched as if it were in your wallet but cannot be used to spend.

Arguments:
1. "script"           (string, required) The hex-encoded script (or address)
2. "label"            (string, optional, default="") An optional label
3. rescan               (boolean, optional, default=true) Rescan the wallet for transactions
4. p2sh                 (boolean, optional, default=false) Add the P2SH version of the script as well

Note: This call can take hours to complete if rescan is true.
If you have the full public key, you should call importpublickey instead of this.

Examples:

Import a script with rescan
> nexa-cli importaddress "myscript"

Import using a label without rescan
> nexa-cli importaddress "myscript" "testing" false

As a JSON-RPC call
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importaddress", "params": ["myscript", "testing", false] }' -H 'content-type: text/plain;' http://127.0.0.1:7227/