log = Log.Log(SETTINGS['log'])
mempool = MemPool.MemPool(log)
chaindb = ChainDb.ChainDb(SETTINGS['db'], log, mempool, NETWORKS[MY_NETWORK])
scanned = 0
failures = 0
for height in xrange(chaindb.getheight()):
heightidx = ChainDb.HeightIdx()
heightidx.deserialize(chaindb.height[str(height)])
blkhash = heightidx.blocks[0]
ser_hash = ser_uint256(blkhash)
f = cStringIO.StringIO(chaindb.blocks[ser_hash])
block = CBlock()
block.deserialize(f)
if not block.is_valid():
log.write("block %064x failed" % (blkhash,))
failures += 1
scanned += 1
if (scanned % 1000) == 0:
log.write("Scanned height %d (%d failures)" % (
height, failures))
log.write("Scanned %d blocks (%d failures)" % (scanned, failures))
i = 0
#target = 6901641034498895230248057944249341782018790077074986006051269912821760
target = uint256_from_compact(block.nBits)
print "Target: \t%064x" % target
for i in xrange(1000000000000000):
block.nNonce = i
block.sha256 = None
block.calc_sha256()
calculated_hash = block.sha256
# print calculated_hash
# time.sleep(1)
if calculated_hash < target:
print "Calculated hash: ", hex(block.sha256)
break
print "Valid: ", block.is_valid()
genesis = binascii.hexlify(block.serialize())
print "Version: ", genesis[:8]
print "Previous block: ", genesis[8:72]
print "Merkle root: ", genesis[72:136]
print "Match : ", "3BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A"
print "Time stamp: ", genesis[136:144]
print "Match: : ", "29AB5F49"
print "nBits: ", genesis[144:152]
print "Match: ", "FFFF001D"
print "Nonce: ", genesis[152:160]
print "Match: ", "1DAC2B7C"
print "# transactions: ", genesis[160:162]
print "Match : ", "01"
print "Version: ", genesis[162:170]
i = 0
#target = 6901641034498895230248057944249341782018790077074986006051269912821760
target = uint256_from_compact(block.nBits)
print "Target: \t%064x" % target
for i in xrange(1000000000000000):
block.nNonce = i
block.sha256 = None
block.calc_sha256()
calculated_hash = block.sha256
# print calculated_hash
# time.sleep(1)
if calculated_hash < target:
print "Calculated hash: ", hex(block.sha256)
break
print "Valid: ", block.is_valid()
genesis = binascii.hexlify(block.serialize())
print "Version: ", genesis[:8]
print "Previous block: ", genesis[8:72]
print "Merkle root: ", genesis[72:136]
print "Match : ", "3BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A"
print "Time stamp: ", genesis[136:144]
print "Match: : ", "29AB5F49"
print "nBits: ", genesis[144:152]
print "Match: ", "FFFF001D"
print "Nonce: ", genesis[152:160]
print "Match: ", "1DAC2B7C"
print "# transactions: ", genesis[160:162]
print "Match : ", "01"
print "Version: ", genesis[162:170]
from bitcoin.core import CBlock from bitcoin.core import CTxIn, CTxOut, CTransaction txin = CTxIn() txout = CTxOut() txin.scriptSig = 0x04FFFF001D0104455468652054696D65732030332F4A616E2F32303039204368616E63656C6C6F72206F6E206272696E6B206F66207365636F6E64206261696C6F757420666F722062616E6B73 txin.prevout = 0x0000000000000000000000000000000000000000000000000000000000000000FFFFFFFF print txin, txin.is_valid() tx.vout.nValue = 5000000000 tx.vout.scriptPubKey = 0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704 tx = CTransaction() tx.vin = [txin] tx.vout = [txout] """ tx.vout.scriptPubKey = 0x5F1DF16B2B704C8A578D0BBAF74D385CDE12C11EE50455F3C438EF4C3FBCF649B6DE611FEAE06279A60939E028A8D65C10B73071A6F16719274855FEB0FD8A6704 OP_CHECKSIG """ block = CBlock() block.nVersion = 1 block.hashPrevBlock = 0 block.hashMerkleRoot = 0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b block.nTime = 1231006505 block.nBits = 0x1d00ffff block.nNonce = 2083236893 block.vtx = [tx] block.sha256 = 0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f print block.is_valid()
