Is there any "serverless" / gobal database hosting? : Iam bulling a litte python + GTK app.

I need a way where I can store some index data on a server.
Frist I look at RedHat´s OpenShift as the server rest-backend (python + flask + mysql)

But now I am thinking is there a way to just put some data into the "cloud".

I know the cloud just i a buzz word for other peoples computers / servers.

But something like the bitcoin where you just push some key/val data then any node in the network gets the data after some time.

Apache Cassandre look like can do some thing like this.
But I don't want to host anything.

Some thing like this.

    $ datacloud <openid> <password> <databucket>
    $ datacloud add <key> <jsondata / val>
    $ datacloud get <key>
    $ <jsondata> 
    
Or in python.

    import datacloud as dc
    import json
    
    def main():
        dc.connect("<myopenid.provider.org>", "<password>", "<databucket>")
        
        ds.add("key", json.dumps({"hello":"world"}))

        for data in dc:
          print data  
    
        print dc.get("<key>")
        --> { "hello": "world"}

Or better just with jquey.

    <html>
       <head>
        <script href="pathto/jquery.js"></script>
        <title>ServerLess / local site</title>
        <script>
        $(function(){
           $.ajax({
              url: "magnet:?xt=urn:btih:5dee65101db281ac9c46344cd6b175cdcad53426",
              data: {
                 "openid": "<openid.myopenidprovier.org>",
                 "password": "<12345>",
                 "bucket": "<databucket>"
              } 
           }).done(function(keys){
                for(var i=0; i < keys.length; i++)
                    $('#news').append('<h3>'+key[i]+'</h3>');
           });
        });
        </script
       </head>
       <body>
          <h1>News with no server</h1>
          <div id="news"></div>
       </body>
    </html>

Iam look for an p2p global key/val store.
... an freenet like data global key/val cache or store..