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This commit is contained in:
Thomas Zarebczan 2018-11-16 17:50:04 -05:00
parent 103d234be3
commit a88ebfdf31
1 changed files with 8 additions and 0 deletions
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8
electrum/blockchain.py
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@ -421,6 +421,14 @@ class Blockchain(util.PrintError):
bnNew = ArithUint256(MAX_TARGET)
return bnNew.GetCompact(), bnNew._value
def check_bits(self, bits):
bitsN = (bits >> 24) & 0xff
assert 0x03 <= bitsN <= 0x1f, \
"First part of bits should be in [0x03, 0x1d], but it was {}".format(hex(bitsN))
bitsBase = bits & 0xffffff
assert 0x8000 <= bitsBase <= 0x7fffff, \
"Second part of bits should be in [0x8000, 0x7fffff] but it was {}".format(bitsBase)
def bits_to_target(self, bits: int) -> int:
bitsN = (bits >> 24) & 0xff
if not (bitsN >= 0x03 and bitsN <= 0x1f):