24 lines
983 B
Python
24 lines
983 B
Python
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from ethereum import utils
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def mk_multisend_code(payments): # expects a dictionary, {address: wei}
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kode = b''
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for address, wei in payments.items():
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kode += b'\x60\x00\x60\x00\x60\x00\x60\x00' # 0 0 0 0
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encoded_wei = utils.encode_int(wei) or b'\x00'
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kode += utils.ascii_chr(0x5f + len(encoded_wei)) + encoded_wei # value
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kode += b'\x73' + utils.normalize_address(address) # to
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kode += b'\x60\x00\xf1\x50' # 0 CALL POP
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kode += b'\x33\xff' # CALLER SELFDESTRUCT
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return kode
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def get_multisend_gas(payments):
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o = 26002 # 21000 + 2 (CALLER) + 5000 (SELFDESTRUCT)
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for address, wei in payments.items():
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encoded_wei = utils.encode_int(wei) or b'\x00'
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# 20 bytes in txdata for address = 1360
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# bytes in txdata for wei = 68 * n
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# gas for pushes and pops = 3 * 7 + 2 = 23
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# CALL = 9700 + 25000 (possible if new account)
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o += 1360 + 68 * len(encoded_wei) + 23 + 34700
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return o
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