CoinDesk Bitcoin Price Index

Info on how this value was calculated
Based on the following values:
USD:
BTC-e$497.00
Bitstamp$512.13
Bitfinex$512.02
CNY:
BTC China¥3,175.58
OKCoin¥3,180.40
Last updated: Apr 20, 2014 at 09:09 BST