At the very least you must place the token after the '#' in the URL, disable Google crawling in robots and turn off certain indexing modes using Webmaster tools.
>[...] that helps you track alt coin earnings. Just enter your wallet addresses [...]
makes me think that the it's view-only anyways. even if you got a hold of the wallet address (authentication token), it's not like you can redirect the payout to somewhere else. and while it's true you can see another user's earnings, that information is publicly available on the blockchain anyways.