---
title: "Bitcoin Developer Sketches Post-Q-Day Collateral Rule for Vulnerable Coins"
url: https://thecoingazette.com/bitcoin-developer-sketches-post-q-day-collateral-rule-for-vulnerable-coins/
date: 2026-11-07
modified: 2026-11-07
lang: en
author: "Coin Gazette Editorial"
description: "Bitcoin Core developer Cory Fields outlined a hypothetical rule that would require collateral for legacy Bitcoin (BTC) spends after a future “q-day” and activation of new validation rules. His 30-day waiting period is…"
categories:
  - "Crypto News"
tags:
  - "crypto"
  - "cryptocurrencies"
  - "Defi"
  - "Market Trends"
  - "News"
word_count: 33
---

# Bitcoin Developer Sketches Post-Q-Day Collateral Rule for Vulnerable Coins

Bitcoin Core developer Cory Fields outlined a hypothetical rule that would require collateral for legacy Bitcoin (BTC) spends after a future “q-day” and activation of new validation rules. His 30-day waiting period is…