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@heikoheiko
heikoheiko / tl_growth_sim.py
Created June 25, 2018 06:46
"""
memory efficient simulation of network growth
pypy is ~10 times faster
"""
import math
import time
import array
import random
import profile
@heikoheiko
heikoheiko / mockchain.py
Last active May 2, 2018 12:35
import collections
import random
import json
import hashlib
def hexhash(x):
return '0x' + hashlib.sha224(str(x)).hexdigest()[:6]
@heikoheiko
heikoheiko / eur-trustlines-network-dump.csv
Created June 5, 2017 20:05
Address A Address B Balance AB Creditline AB Creditline BA
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0xd60cbcc76cb871a99d9c54f33a34be41b2ac994e 0 10000 0
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0x682899a3b136951a22ba2bb53be35952b2bd7b36 0 0 3700
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0x300834e9043d3c6c4dad0a8e57cf36d21737a870 0 0 0
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0x53151911dec4e218ba6cbed36c0515f1b851457e 0 5000 171
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0x63a5307db2de56d98367445e31ec90e47ae8785d 3321 5000 5000
0x25ae499a363ca20d9623bb79667e21c78e7cbef0 0xdc6d612be3ff757ab43894fb1df31b4662b3f66e 2374 4000 5000
0xb103fbb65894c6d4f063bc343aa329d49fcdc633 0x4b807bdd01dffac5c449654fffbeded7407f2df8 30000 30000 30000
0xd56edaf63d31b92edb83245564ba9245400a12f7 0x6d767217e124b751b5aee396d4e8467bff24bccf 0 1000 1000
0xd56edaf63d31b92edb83245564ba9245400a12f7 0x1219223855393aade36c71a68e9004831250de1d 600 1000 1000
@heikoheiko
heikoheiko / trie_benchmark.py
Created February 9, 2016 11:44
Py Code for https://github.com/ethereum/wiki/wiki/Benchmarks
from ethereum import trie, db, utils
import time
MIN_COUNT = 32
ROUNDS = 1000
ERA_SIZE = 4
MAX_COUNT = 32
SYMMETRIC = True
tests = [[3, 32, False],
@heikoheiko
heikoheiko / fast_rlp.py
Created September 4, 2015 15:30
import trie
import rlp
import db
import time
trie.rlp_encode = rlp.codec.encode_raw
def int_to_big_endian(value):
cs = []
@heikoheiko
heikoheiko / udp discovery node crawler
Last active August 29, 2015 14:28
# after entering the console of pyethapp
# https://github.com/ethereum/pyethapp/wiki/The_Console
from devp2p import kademlia
import gevent
def crawl():
delay = 0.1
lookups = 0
kademlia_proto = eth.app.services.discovery.protocol.kademlia
@heikoheiko
heikoheiko / olympic_winners.py
Last active August 29, 2015 14:26
import sys
from ethereum import trie
from ethereum.securetrie import SecureTrie
from ethereum import blocks
import ethereum.chain
from pyethapp.leveldb_service import LevelDB
from ethereum.utils import big_endian_to_int
db = LevelDB(sys.argv[1])
@heikoheiko
heikoheiko / gist:a7b5d173e5bfc1ab9db0
Created May 15, 2015 06:47
ecdsa recover in cython with gmp
"""
cython + gmp implementation of ecdsa recover
based on:
https://github.com/vbuterin/pybitcointools
"""
@heikoheiko
heikoheiko / kademlia buckets
Created January 18, 2015 15:31
{
"comment": "\n 'node_ids': hex encoded ids in order in which they were added to the routing table\n 'buckets' : buckets sorted asc by range\n ",
"buckets": [
{
"start": "0x0",
"end": "0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffL",
"node_ids": [
"0x1d7425638602ab696a402f23ae8cc938dcdcd03969b666205628059568cc69b1064005c3985c3cf3f76be1d1efa21977394988f847fd9b4e64d1bcb702753a1L",
"0x1825bc5430beb45f683514f2ceb81f9d7914c120c8dcd19f3e3511287900f7f993829b43922fe15ae1e3db63ef7ddc76b92da22b21df306f8a0b3c3336d8393aL",
"0xf844fef1931e9eea56c0941fbf24050a748dbcfac619e630dde29a6baa4b71add2467ac778eedb3693dffbc6c6fa6115ab33edf6e595ed3a8b317fa18d0752bL",
@heikoheiko
heikoheiko / hashimoto2.py
Last active August 29, 2015 14:10
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Requirements:
- I/O bound: cycles spent on I/O ≫ cycles spent in cpu
- no sharding: impossible to implement data locality strategy
- easy verification
Thoughts: