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XertroV /
Created Mar 6, 2014
Turn any <20 bytes into a bitcoin address
from hashlib import sha256
import sys
from pycoin.encoding import b2a_base58
def hashme(m):
return sha256(m).digest()
XertroV / gist:9755361
Created Mar 25, 2014
Geonode styling notes
View gist:9755361
XertroV / gist:12a6b80b5210fe9b9d91
Last active Aug 29, 2015
First transactions with cryptonet (min_coin example)
View gist:12a6b80b5210fe9b9d91

A record of the first few transactions on min_coin


┌──────────────────────────────( linux )─( X-LittleLap )─( 23:14:29 )─┐
└─( ~/src )─> mctx -h
usage: mctx [-h] secret_exponent to_x amount fee donation

positional arguments:
  secret_exponent  secret exponent to use
""" Trezor wipe-and-load script. Generates fresh keys (or inserts predetermined mnemonic) """
from trezorlib.client import TrezorClient
from trezorlib.transport_hid import HidTransport
import mnemonic
m = mnemonic.Mnemonic('english')
priv = m.generate(256)
View gist:b4d85e5f4d871748064e
Verifying that +xertrov is my Bitcoin username. You can send me #bitcoin here:

Originally posted at


The Ethereum devs have been talking about microchains lately so I figured it was time to write up what my thoughts on this sort of thing have condensed into.

As a note, I didn't coin the term microchain, though I've heard Gavin Wood use it (and Stephan Tual). I didn't have a term and I think this is perfect.

The point of a microchain is to provide a shared scalable PoW 'container' - a chain meant for nothing else but wrapping data in a PoW. Typically this has been done in a roundabout way (see AuxPoW or Mastercoin/Counterparty) that requires a lot of data, and is not efficient for any 'piggy-backing' chains hanging off the main chain. This isn't a huge issue; insofar as - in the case of AuxPoW - proofs just go from 80 bytes to ~500 bytes (unless you're using P2Pool or Eligius then it's a bunch more). This is because the whole chain from block hash to PoW must be included, which is `Hash(Header(MerkleTree(Coinbase(ScriptSig(BlockHash

View gist:3665a80e835aa2c9285a
### Keybase proof
I hereby claim:
* I am XertroV on github.
* I am xertrov ( on keybase.
* I have a public key whose fingerprint is 38E4 5128 27C9 78CF 6C68 AE99 FEF3 5F69 AAAC E7FE
To claim this, I am signing this object:
XertroV / randomize.dg
Created May 23, 2015
Randomly shuffle things with minimal bits (written in pyos/dg)
View randomize.dg
#!/usr/bin/env python3 -m dg
import '/hashlib'
import '/time'
Counter = subclass object where
__init__ = self ->
self.c = 0
XertroV /
Created Aug 15, 2015
pycoin demonstration: send all the coins at an address
#!/usr/bin/env python3
import os
import argparse
from binascii import hexlify, unhexlify
import sys
from urllib.error import HTTPError
from pycoin.key import Key
XertroV /
Created Dec 15, 2015
Password Trainer - simple script to remember a password and help you practise
#!/usr/bin/env python3
import getpass
import time
print("Please input your password carefully.")
password = getpass.getpass()
print("Thank you, please type it again to confirm")
p2 = getpass.getpass()