Topic: CoinMarketCap.com - Market Cap Rankings of All Cryptocurrencies! - page 5. (Read 639534 times)

from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
import time, os, sys

def find_between( s, first, last ):
    try:
        start = s.index( first ) + len( first )
        end = s.index( last, start )
        return s[start:end]
    except ValueError:
        return ""

def find_between_r( s, first, last ):
    try:
        start = s.rindex( first ) + len( first )
        end = s.rindex( last, start )
        return s[start:end]
    except ValueError:
        return ""

# user-config section
rpchost = '127.0.0.1'
rpcuser = ''
rpcpass = ''
rpcport = '8556'

rpcpipe = AuthServiceProxy('http://' + rpcuser + ':' + rpcpass + '@' + rpchost + ':' + rpcport)
currentblk = 0
totalcoincap = 0

while True:

   currentblk=currentblk+1

   #get total blocks
   while True:
     blocktotal = int(rpcpipe.getblockcount())
     if currentblk == blocktotal:
        print 'hit end of chain, waiting'
        time.sleep(15)
     else:
        break

   #request each block
   blockhash = rpcpipe.getblockhash(currentblk)
   blockdata = rpcpipe.getblock(blockhash)
   blocktx = find_between(str(blockdata),'[',']').replace('u','').replace(' ','').replace('\'','')
   blocktxlist = blocktx.split(',')

   #parse all tx in block
   for tx in blocktxlist:
       rawtx = rpcpipe.getrawtransaction(tx)
       # generated pow/pos coins have no prevout
       if '0000000000000000000000000000000000000000000000000000000000000000' in rawtx:
          break

   #decode the 'generated/mined' tx data, extract the value
   coinbasetx = rpcpipe.decoderawtransaction(rawtx)
   valuemined = find_between(str(coinbasetx), 'Decimal(\'', '\'),')

   #special case for nonstandard pool where coinbaseout isn't first vout
   while float(valuemined)==0:
      try:
        valuemined = find_between_r(str(coinbasetx), 'Decimal(\'', '\'),')
      except:
        valuemined = 0
        print '* could not find vout for block '+str(currentblk)+'!'
        break

   totalcoincap = totalcoincap + float(valuemined)
   currentblk_fmt = str(currentblk)
   while len(str(currentblk_fmt)) < 6:
     currentblk_fmt=' '+currentblk_fmt

   print 'block '+str(currentblk_fmt)+'|'+blockhash+'|mined '+str(round(float(valuemined),8))+'|coincap '+str(round(float(totalcoincap),8))