A feed of the latest blog posts from major bitcoin and crypto wallet companies and developers, direct from the source.  A quick way to stay on top of the latest potential security issues, new products and current deals.

Announcing Casa Titanium The most extreme bitcoin security that money can't buy.
Blockclock Firmware updated Firmware Upgrade Time!
We’ve fixed a number issues and added some fun new features to the Block Clock.
Electrum protocol has advanced since we released the Blockclock. This release
implements version 1.4 of the protocol, which is widely deployed today.
bitcoincore.org hidden service After frequent requests, this site is now reachable as a Tor hidden service
through an onion address:
As well as adding another means of censorship resistance, a hidden
service gives an alternative trust path that doesn’t rely on certificate
Build Your Own Casa Node As noted in our 2020 roadmap blog post, we're planning on focusing on our Keymaster self-custody software and as a result want to open up the Casa Node to the wider community
Ledger’s Resilience During the COVID-19 Pandemic – a word from our CEO As the COVID-19 pandemic continues to significantly alter our lives, both personally and professionally, we want to reach out to you, our valued clients and friends. In addition to acknowledging the deeply personal impact COVID-19 likely is having on all ...
Bitcoin Multisig in a Pandemic We’ll take a look at scenarios you can plan for as COVID-19 continues to spread - extended quarantines, evacuations, and widespread disruptions - however, you can also extrapolate from these guidelines to a wide variety of routine and emergency situations.
CoinTracker Discount for Tax Season Just in time for tax season, we’re excited to announce another perk of Casa membership.
Bitcoin Core 0.19.1 Released Bitcoin Core version 0.19.1 is now available for download. For a complete list of changes in this maintenance release,
please see the release notes.
If have any questions, please stop by the #bitcoin IRC chatroom
(IRC, web) and we’ll do ...
AND THE GLASS HANDED KITES 15th ANNIVERSARY EXPANDED EDITION We are delighted to announce the special edition reissue of our album 'And The Glass Handed Kites' as part of Record Store Day 2020, on Saturday April 18th 2020.Released via Music On Vinyl (and A:larm in Denmark) the special edition reissue will ...
Enhancing Your Ledger Experience: Ledger Live Manager Version 2.0 is Now Available At Ledger, we’re always looking into ways to optimize the user-experience. Today, we proudly announce the next step for the Ledger Live manager, with new features to build upon its ease-of-use and enhance your Ledger experience. Released in July 2018, ...
Casa Keymaster—Now with Coldcard Casa Keymaster, the best way to secure your bitcoin, now works with Coldcard!
Let’s take back control – for real this time! The long-discussed Brexit story is finally coming to a close today, the 31st of January, with the United Kingdom proceeding to leave the European Union. Boris Johnson, the British Prime Minister, has always expressed that the UK should “take back ...
Version 3.0.6 Released (Security Update) Security Fix (Multisig Users)
This release fixes a multisig PSBT-tampering issue, that could allow a MitM to
steal funds. Please upgrade ASAP.
This issue can only affect multisig wallet users, and we strongly recommend immediate upgrade.
There is no evidence ...
Bitcoin Core 0.19.0 Released Bitcoin Core version 0.19.0 is now available for download containing multiple improvements and bug fixes For a complete list
of changes in this maintenance release, please see the release
notes. Due to an issue that only came to light just ...
15TH ANNIVERSARY OF 'AND THE GLASS HANDED KITES' US TOUR We are pleased to announce that we'll be taking our 'And The Glass Handed Kites' 15th anniversary celebratory show to the US 🇺🇸Tickets for all shows are on-sale this Friday. Find them HERE.May 23: 9:30 Club, WashingtonMay 25: The Bowery Ballroom, NYCMay 28: Neptune ...
CVE-2017-18350 Disclosure Disclosure of the details of CVE-2017-18350, a fix for which was released on November 6th, 2017 in Bitcoin Core version 0.15.1.
Technical Details
CVE-2017-18350 is a buffer overflow vulnerability which allows a malicious SOCKS proxy server to overwrite the program ...
Login Countdown and Nickname With 3.0.3 release we have two new optional features, Login Countdown and Device Nickname.
Download the v3.0.3 firmware here
Login Countdown
As a defensive measure, the “login countdown” can force
a time delay when logging into the Coldcard.
Once enabled, ...
Troublesome Change Outputs Download the latest firmware here
The Problem
It is possible to make a valid PSBT file that sends the change left
from a transaction to a unknown location. If an attacker had
your XPUB, and could change your PSBT file ...
Coldcard Hardware Details Today we have posted all the information you need to be able to
build your own Coldcard from off-the-shelf parts. We are sharing
this information for the benefit of security researchers who wish
to analyse the Coldcard more completely.
View ...
SLP Bitcoin Custody Series Welcome to the Bitcoin Custody Interview Series. Hopefully you will enjoy this as a follow on from my prior Hardware […]