chris-belcher

How Wasabi Wallet and Samourai-Wallet-Whirlpool slightly degrade the divisibility of bitcoin

December 2018

I made this claim on twitter recently and many people wanted me to go into more detail.

Lots of privacy tech in bitcoin like coinjoin, coinswap, tumblebit and Lightning Network require many entities to come together to agree to make certain kinds of transactions. This creates a requirement that the right resources (coins) have to be in the right place,

nusenu

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Jorijn

Create a TOR hidden service

In configuration file /etc/tor/torrc add:

HiddenServiceDir /var/lib/tor/hidden_service/lnd_watchtower
HiddenServiceVersion 3
HiddenServicePort 9911 127.0.0.1:9911

Now reload the TOR daemon with systemctl reload tor. Inspect the hostname TOR has assigned to your secret service with:

xanoni

#! /usr/bin/env -S bash -e

SSH_USERHOST="user@host"
REMOTE_PATH="/tmp/disk_backup.img"

OUT_PATH="./$(basename ${REMOTE_PATH})"
TMP_PATH="/tmp/ssh-big-copy"
SLICES=200

echo -e "\nGetting from ${SSH_USERHOST}: ${REMOTE_PATH}\n"

xanoni

# File: ~/.bitmonero/monerod.conf

[...]
tx-proxy=i2p,127.0.0.1:4447,25 # to send transactions via I2P
pad-transactions=1 # anti traffic analysis
# Get tunnel address for below line from /var/lib/i2pd/destinations
anonymous-inbound=<TUNNEL_ADDR>.b32.i2p:18084,127.0.0.1:18084,25
[...]

xanoni

#! /usr/bin/env bash

PCT_INIT=100
PCT_MIN=25
PCT_DROP=25

MIN_AMOUNT=10000 # don't rebalance below this amount (def: 10k)
MIN_LOCAL=1000000 # min outbound sats per chan (def: 1M)
MIN_REMOTE=1000000 # min inbound sats per chan (def: 1M)
FEE_FACTOR=0.95 # (def: 1.0)

kristapsk

Odroid HC4 RaspiBolt installation notes

Upgrading

Upgrading kernel will make it unbootable.

# apt update
# apt-mark hold linux-odroid-c4
linux-odroid-c4 set on hold.

mrphs

#!/usr/bin/env python

import csv
import datetime
import os
import os.path
import re
import sys
import time
import urllib2

lene

socat TCP-LISTEN:<localport> SOCKS4A:localhost:<host>:<remoteport>,socksport=9050

# for example, to ssh into secret.shell.server.org via tor, do:
$ socat TCP-LISTEN:22222 SOCKS4A:localhost:secret.shell.server.org:22,socksport=9050 &
$ ssh localhost -p 22222

chris-belcher

Financial mathematics of JoinMarket fidelity bonds

13/7/2019

4/4/2021 (edited fixing formula and adding two graphs)

7/5/2021 (added appendix 1)

To read the context see the main document Design for improving joinmarket's resistance to sybil attacks using fidelity bonds.