user22798: For example, I have a BTC address. Can I (using RPC) get information is this address my local or remote?

user21052: The validateaddress RPC will do precisely that.  Here's sample output from a testnet address with Bitcoin Core 0.10.0:
{
    "isvalid" : true,
    "address" : "mgnucj8nYqdrPFh2JfZSB1NmUThUGnmsqe",
    "ismine" : true,
    "iswatchonly" : false,
    "isscript" : false,
    "pubkey" : "03bacb84c6464a58b3e0a53cc0ba4cb3b82848cd7bed25a7724b3cc75d76c9c1ba",
    "iscompressed" : true,
    "account" : "test label"
}

If the field ismine is false, the address doesn't belong to the currently-running Bitcoin Core wallet.

22798: <p>For example, I have a BTC address. Can I (using RPC) get information is this address my local or remote?</p>
 21052: <p>The <a href="https://bitcoin.org/en/developer-reference#validateaddress" rel="nofollow"><code>validateaddress</code> RPC</a> will do precisely that.  Here's sample output from a testnet address with Bitcoin Core 0.10.0:</p>

<pre><code>{
    "isvalid" : true,
    "address" : "mgnucj8nYqdrPFh2JfZSB1NmUThUGnmsqe",
    "ismine" : true,
    "iswatchonly" : false,
    "isscript" : false,
    "pubkey" : "03bacb84c6464a58b3e0a53cc0ba4cb3b82848cd7bed25a7724b3cc75d76c9c1ba",
    "iscompressed" : true,
    "account" : "test label"
}
</code></pre>

<p>If the field <code>ismine</code> is false, the address doesn't belong to the currently-running Bitcoin Core wallet.</p>
