A read only balance tracker Is there an app where I could add my public keys for several alt-coins that I have, to see the current balances. Kind of like a multi-currency wallet/tracker, but read-only.
several approaches, just wondering about the public keys, that you mention... wouldn't you have "amounts", that should be multiplied by current value (in Euro or Dollars) per currency? Then this:

http://www.coindetail.com/

alternativly the el-cheapo version at the command line, which I cut&amp;paste into an ods (xls) or similiar:

#!/bin/sh
####################################################################
### an 'el cheapo' approach to fetch data from coinmarketcap.com ###
####################################################################

log_fn=ccy_values.log

echo "`date '+%Y-%B-%d'`"                       &gt; $log_fn
echo "`date '+%H:%M'`"                         &gt;&gt; $log_fn
echo "running ccy_values.sh on `hostname -s`"  &gt;&gt; $log_fn
echo " " &gt;&gt; $log_fn

today="`date '+%y%m%d%H%M'`"

wget -q -O - https://api.coinmarketcap.com/v1/ticker/bitcoin/?convert=EUR   &gt; /Data/tmp/tmp_$today.tmp
wget -q -O - https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=EUR &gt;&gt; /Data/tmp/tmp_$today.tmp
wget -q -O - https://api.coinmarketcap.com/v1/ticker/aeon/?convert=EUR     &gt;&gt; /Data/tmp/tmp_$today.tmp
wget -q -O - https://api.coinmarketcap.com/v1/ticker/siacoin/?convert=EUR  &gt;&gt; /Data/tmp/tmp_$today.tmp
wget -q -O - https://api.coinmarketcap.com/v1/ticker/storj/?convert=EUR    &gt;&gt; /Data/tmp/tmp_$today.tmp
wget -q -O - https://api.coinmarketcap.com/v1/ticker/storjcoin-x/?convert=EUR    &gt;&gt; /Data/tmp/tmp_$today.tmp
cat /Data/tmp/tmp_$today.tmp | grep -e "id" -e "price_btc" -e "price_eur" | sed -e 's/"//g' -e 's/,/ /g' &gt; $log_fn

# create terminal output 
tail -n 18 $log_fn | awk 'BEGIN { print "Currency (source: coinmarketcap.com)\tConversion Rate (Bitcoin)\tin EUR"} { ORS=""; print $2; if( NR % 3 == 0) print "\n"; else print "\t";}'