At Wisly, we endeavour as much as possible to give you the most up to date and precise picture of your assets, portfolio value and profits.
As such, we source our prices from the most well known and highest rated cryptocurrency pricing aggregators, as well as directly from key exchanges. We analyse prices every minute to make sure it is correct and sources do not deviate too much from eachother, before presenting you with new prices.
This is why pricing update are not live to the second, but updated around every minute.
In the case of assets that are only listed on an exchange that has been hacked, or if the assets does not trade anymore (for example, no volume after 7 days), we might "write off" the asset and force a price of 0 to materialize the loss. If in the future any recovery occurs, we revert back the price to the market value.