Crypt-iQ

Version 3 transactions in Bitcoin Core

Motivation

• Cluster mempool gets rid of CPFP Carve-out so Lightning needs a way to prevent pinning once cluster mempool is widely deployed.
  • v3 transactions is the proposed anti-pinning solution. It limits the worst-case for pinning since children are at most 1000 sat/vb and there can only be one child.

v3

Crypt-iQ

import matplotlib.pyplot as plt
import os
import numpy as np
import seaborn as sns
import pandas as pd
from scipy.stats import norm

lines = open("feefilter.log").read().splitlines()

data = []

Crypt-iQ

HTLC Timeout Transaction Weight

• htlc_timeout_script: 70 bytes

  • OP_DATA: 1 byte (local_htlcpubkey length)
  • local_htlcpubkey: 33 bytes
  • OP_CHECKSIGVERIFY: 1 byte
  • OP_DATA: 1 byte (remote_htlcpubkey length)
  • remote_htlcpubkey: 33 bytes
  • OP_CHECKSIG: 1 byte

• htlc_timeout_control_block: 65 bytes

Crypt-iQ

Keybase proof

I hereby claim:

• I am crypt-iq on github.
• I am eugene_ (https://keybase.io/eugene_) on keybase.
• I have a public key ASBK1oq5Mt92EMGia-ecoJh2521CUyaViP1o47IHn4XXzQo

To claim this, I am signing this object:

Crypt-iQ

I'm verifying ownership of elzeigel@gmail.com at EarnCarrot.

Crypt-iQ

package wirefuzz

import (
	"testing"
	"bytes"
)

func TestFuzz(t *testing.T) {
	var data []byte = []byte("\x00\x10\a\x96\x96\xa5UYVj\xaaV\xa9\x9a\x9ae\xa6YZf" +
		"\x96\x99UV\x9aZj\x99ei\xa5f\xa6\x96Zf\x96\x96\x96j" +