def fetch_block(rpc, h, check):
reply = rpc.execute([rpc.build_request(0, 'getblock', [h, False])]);
for resp_obj in reply:
if rpc.response_is_error(resp_obj):
print('JSON-RPC: error at getblock', file=sys.stderr)
exit(1)
hexblock = resp_obj['result']
block = check(hexblock)
return hashStr(block.blockHeader.previousHash)
def sample_block_parser():
blkfile = '../Library/Application Support/Bitcoin/blocks/blk00000.dat'
with open(blkfile, 'rb') as blockfile:
print "Magic Number:\t %8x" % blocktools.uint4(blockfile)
print "Blocksize:\t %u" % blocktools.uint4(blockfile)
"""Block Header"""
print "Version:\t %d" % blocktools.uint4(blockfile)
print "Previous Hash\t %s" % blocktools.hashStr(blocktools.hash32(blockfile))
print "Merkle Root\t %s" % blocktools.hashStr(blocktools.hash32(blockfile))
print "Time\t\t %s" % str(blocktools.time(blockfile))
print "Difficulty\t %8x" % blocktools.uint4(blockfile)
print "Nonce\t\t %s" % blocktools.uint4(blockfile)
print "Tx Count\t %d" % blocktools.varint(blockfile)
print "Version Number\t %s" % blocktools.uint4(blockfile)
print "Inputs\t\t %s" % blocktools.varint(blockfile)
print "Previous Tx\t %s" % blocktools.hashStr(blocktools.hash32(blockfile))
print "Prev Index \t %d" % blocktools.uint4(blockfile)
script_len = blocktools.varint(blockfile)
print "Script Length\t %d" % script_len
script_sig = blockfile.read(script_len)
print "ScriptSig\t %s" % blocktools.hashStr(script_sig)
print "ScriptSig\t %s" % blocktools.hashStr(script_sig).decode('hex')
print "Seq Num\t\t %8x" % blocktools.uint4(blockfile)
print "Outputs\t\t %s" % blocktools.varint(blockfile)
print "Value\t\t %s" % str((blocktools.uint8(blockfile)*1.0)/100000000.00)
script_len = blocktools.varint(blockfile)
print "Script Length\t %d" % script_len
script_pubkey = blockfile.read(script_len)
print "Script Pub Key\t %s" % blocktools.hashStr(script_pubkey)
print "Lock Time %8x" % blocktools.uint4(blockfile)
print