importpubkey "pubkey" ( "label" rescan )
Adds a public key (in hex) that can be watched as if it were in your wallet but cannot be used to spend.
Arguments:
1. "pubkey" (string, required) The hex-encoded public key
2. "label" (string, optional, default="") An optional label
3. rescan (boolean, optional, default=true) Rescan the wallet for transactions
Note: This call can take minutes to complete if rescan is true.
Examples:
Import a public key with rescan
> bitcoin-cli importpubkey "mypubkey"
Import using a label without rescan
> bitcoin-cli importpubkey "mypubkey" "testing" false
As a JSON-RPC call
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "importpubkey", "params": ["mypubkey", "testing", false] }' -H 'content-type: text/plain;' http://127.0.0.1:8332/