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add BIP9 and segwit_support methods

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ThomasV
2017-03-25 11:09:24 +01:00
parent 6548388b0e
commit 9c70540a2f
1 changed files with 8 additions and 0 deletions
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8
lib/blockchain.py
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@@ -175,6 +175,14 @@ class Blockchain(util.PrintError):
h = self.deserialize_header(h, block_height) h = self.deserialize_header(h, block_height)
return h return h
def BIP9(self, height, flag):
v = self.read_header(height)['version']
return ((v & 0xE0000000) == 0x20000000) and ((v & flag) == flag)
def segwit_support(self, N=144):
h = self.local_height
return sum([self.BIP9(h-i, 2) for i in range(N)])*10000/N/100.
def check_truncate_headers(self): def check_truncate_headers(self):
checkpoint = self.read_header(self.checkpoint_height) checkpoint = self.read_header(self.checkpoint_height)
if checkpoint is None: if checkpoint is None: