How to compile libbitcoin

Start debian 12 docker container

docker run -it --name libbitcoin debian:bookworm

Install necessary packages

ottosch / interfaces

Last active October 14, 2025 22:39

Sample /etc/network/interfaces with static IP for proxmox VM

	# Notes:
	# remove the first line (source) if interfaces.d does not exist.
	# interface_name examples: eth0, ens18 etc
	# chosen_ip example: 192.168.1.18 etc
	# This works for VMs. For LXC, it has to be done within proxmox itself.
	# On UI: node > CT > network. Enter IP there with a trailing "/24".

	source /etc/network/interfaces.d/*

	# The loopback network interface

ottosch / eval-performance-electrum.sh

Created September 27, 2025 00:14

Measure time elapsed in fulcrum or another electrum server

	#! /usr/bin/env bash

	host="localhost"
	port=50001

	get_balance='{"jsonrpc":"2.0","method":"blockchain.scripthash.get_balance","params":["562ce1c828ab2594470ab4de2561d993d5b5cce0b55695658afb17bec0121ea5"],"id":1}'
	get_history='{"jsonrpc":"2.0","method":"blockchain.scripthash.get_history","params":["562ce1c828ab2594470ab4de2561d993d5b5cce0b55695658afb17bec0121ea5"],"id":1}'

	# command="$get_balance"
	command="$get_history"

ottosch / peer-list-low-fee.txt

Last active August 4, 2025 10:25

Bitcoin peers with minfeefilter < 1sat/vb. Add each with `addnode` on bitcoin.conf or loop through the list calling `bitcoin-cli addnode`

	103.126.161.206:8335
	103.16.128.63:8333
	103.251.165.138:8333
	103.6.212.28:8333
	104.250.153.218:8333
	108.238.23.61:8333
	109.227.125.146:8333
	116.202.223.108:8333
	134.209.198.36:8333
	138.197.158.71:8333

ottosch / self-transfer.js

Last active June 12, 2025 14:54

Script to spend an UTXO to a single address, with custom fee rate

	#! /usr/bin/env node

	// Instructions: place the file inside a directory, run `npm init -y` and install dependencies with
	// `npm i bitcoinjs-lib@^6.1.1 ecpair@^2.1.0 tiny-secp256k1@^2.2.1`

	const bitcoin = require("bitcoinjs-lib");
	const ecc = require("tiny-secp256k1");
	const { ECPairFactory } = require("ecpair");
	const ECPair = ECPairFactory(ecc);
	bitcoin.initEccLib(ecc);

ottosch / tx-ascii-art.js

Created June 8, 2025 17:05

Code used to create transaction 749fdc72f1c99398899425253875deb1d7e5e040db14014ea57db71c610dad26 - #FreeSamourai

	#! /usr/bin/env node

	const fs = require("fs");
	const bitcoin = require("bitcoinjs-lib");
	const ecc = require("tiny-secp256k1");
	const { ECPairFactory } = require("ecpair");
	const ECPair = ECPairFactory(ecc);
	bitcoin.initEccLib(ecc);

	const network = bitcoin.networks.bitcoin;

ottosch / draw-tx.sh

Created May 3, 2025 22:28

Draws ASCII art from tx 5c4f060e6166a530d891cafd0e9df42441d29b1ed9cff71a1652201b8d50bd72

bitcoin-cli getrawtransaction 5c4f060e6166a530d891cafd0e9df42441d29b1ed9cff71a1652201b8d50bd72 2 | jq -r '.vout[].scriptPubKey.hex | sub("^.{6}"; "")' | while read -r output; do echo "$output" | xxd -p -r; echo; done

ottosch / dinner-inscription.js

Created May 3, 2025 21:50

Extract image inscription of tx 4be3a833ee83b4ca7d157d60fbf7411f7528314ce90df8a844f855118bc6ca11

	#! /usr/bin/env node

	// Invoke with: bitcoin-cli getrawtransaction 4be3a833ee83b4ca7d157d60fbf7411f7528314ce90df8a844f855118bc6ca11 \| ./dinner-inscription.js

	const { Transaction } = require('bitcoinjs-lib');

	if (process.stdin.isTTY) {
	console.error('raw tx needed, quitting...');
	process.exit(1);
	}

ottosch / restore-grub.md

Created February 25, 2025 02:02

How to restore GRUB using Arch Linux ISO

Partitions

/dev/sda1: ESP (EFI System Partition)
/dev/sda2: system + home
/dev/sda3: swap

Script

ottosch / verify-grapheneos-signature.md

Created February 10, 2025 23:16

How to verify GrapheneOS releases

Verifying GrapheneOS releases

Instructions taken from Obtaining Factory Images.

Get the signers' public keys

curl -O https://releases.grapheneos.org/allowed_signers