JSON_P_? http://en.wikipedia.org/wiki/JSONP http://en.wikipedia.org/wiki/JSONP I suppose if the JSON endpoints support CORS that'd be as good... http://en.wi

JSON_P_? http://en.wikipedia.org/wiki/JSONP http://en.wikipedia.org/wiki/JSONP I suppose if the JSON endpoints support CORS that'd be as good... http://en.wikipedia.org/wiki/Cross-origin_resource_sharing http://en.wikipedia.org/wiki/Cross-origin_resource_sharing However, my (unauthenticated) test attempts against blockchain.info and bitcoincharts.com, with the "Origin:" header, didn't give the right "Access-Control-Allow-Origin:" header in response.