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.

ELLIPAL - ELLIPAL Blog
What Is Polymarket? Prediction Markets, Explained Polymarket turns real-world questions into tradable markets where prices read as probabilities. Here is how it works, and how Predict in the ELLIPAL App puts every market one tap away.More
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ELLIPAL - ELLIPAL Blog
Best Cold Wallets in 2026: A Practical Comparison Guide There's no single "best" cold wallet in 2026 — it depends on what you protect and how often you access it. This guide compares 7 cold wallets (ELLIPAL, Ledger, Trezor, Tangem, Keystone, BitBox02) across connection architecture, recovery standard, and form ...
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ELLIPAL - ELLIPAL Blog
ELLIPAL vs Keystone: Air-Gapped Hardware Wallets Compared in 2026 ELLIPAL Titan 2.0 and Keystone are both air-gapped hardware wallets that sign via QR code. The real differences are open-source firmware, fingerprint authentication, multi-sig integration, and companion app philosophy. Match the design choices to your use case.More
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ELLIPAL - ELLIPAL Blog
2026 Top Ledger Alternatives & Companions: Hardware Wallets to Replace or Pair With Ledger In 2026, the question isn't "switch from Ledger" — it's "upgrade your signing architecture." Here's how fully air-gapped signing and NFC card wallets change the self-custody conversation, and where Titan 2.0 and X Card fit as replacement and companion.
 More
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Bitcoin Core
Private Broadcast May Reveal Sender IP Address in Bitcoin Core 31.0 We have become aware of a privacy bug in the -privatebroadcast feature, newly
introduced in Bitcoin Core 31.0, that may cause the originator’s IP address to be
revealed to the receiving peer under certain network conditions. A fix is
forthcoming and will be ...
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OPENDIME Turns 10: A Decade of Real, Physical Bitcoin
COINKITE Blog
OPENDIME Turns 10: A Decade of Real, Physical Bitcoin Well, it finally happened. Our little USB stick that could is officially a decade old this month. That’s right, OPENDIME is turning ten, and we’re as excited as you are that something we built to solve a problem has become ...
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Casa Blog
Casa Blog
Evolving Casa's defenses against social engineering Casa is the home for bitcoin and digital asset wealth, and a home should always feel safe no matter what is happening outside. Right now, the fastest-growing attack vector we are seeing against bitcoiners and people who have digital wealth ...
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Bitcoin Core
CVE-2024-52911 - Script Interpreter Remote Crash After Bitcoin Core 0.14.0 and before Bitcoin Core 29.0, validating a specially-crafted block may
cause the node to access previously freed memory.
During validation, necessary data required for checking inputs for each transaction is
pre-calculated and cached. For specially crafted invalid blocks, it ...
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Bitcoin Core
Bitcoin Core 31.0 released Bitcoin Core version 31.0 is now available for download. See the release notes for more information about the
bug fixes in this release.
If you have any questions, please stop by the #bitcoin IRC chatroom
(IRC, web) and we’ll do our best ...
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Casa Blog
Casa Blog
A Technically-Fluent Bitcoiner’s Inheritance Story TLDR;A deeply technical early Bitcoiner realized that self-custody is only as strong as its worst-case inheritance plan. He needed a system that could survive incapacity, family catastrophe, and coercion without sacrificing sovereignty. With Casa, he built a collaborative 3-of-5 family ...
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Casa Blog
Casa Blog
The Bitcoin Inheritance Gap: What Most Bitcoiners Miss Bitcoiners who have moved off exchanges, set up hardware wallets, and upgraded to multi-key wallets have done the work to ensure their bitcoin is secure.Most have not addressed inheritance yet.A traditional will covers real estate, bank accounts, and investment portfolios. ...
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Bitcoin Core
Bitcoin Core 28.4 released Bitcoin Core version 28.4 is now available for download. See the release notes for more information about the
bug fixes in this release.
If you have any questions, please stop by the #bitcoin IRC chatroom
(IRC, web) and we’ll do our best ...
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Introducing the COLDCARD Mk5
COINKITE Blog
Introducing the COLDCARD Mk5 The Mk4 is a proven workhorse. It’s secure, it’s air-gapped, and it gets the job done. But engineering is about moving forward. Today, we’re introducing the next step in that evolution: the COLDCARD Mk5.
The Mk5 builds on the trusted, battle-tested ...
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BIP-322 Support, WIF Keys, and more!
COINKITE Blog
BIP-322 Support, WIF Keys, and more! New COLDCARD Feature Release: BIP-322 and WIF Support
Today we are releasing a new firmware version for COLDCARD. Tons of new features for both product families: Mk and Q!
New Features
BIP-322 Signing
COLDCARD can now sign BIP-322 “Proof of Reserve”
PSBT files.
This requires a ...
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Bitcoin Core
Bitcoin Core 29.3 released Bitcoin Core version 29.3 is now available for download. See the release notes for more information about the
bug fixes in this release.
If you have any questions, please stop by the #bitcoin IRC chatroom
(IRC, web) and we’ll do our best ...
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COINKITE Blog
COLDCARD Bitcoin Spending Policy Released New COLDCARD Feature Release: Spending Policies!
Spending Policy for Single Signers
You can now take your existing single-signer COLDCARD and reconfigure it
so that the COLDCARD will refuse to sign transactions that are “too big” /
“too fast”, or send to an address not ...
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Blog - MEW
NEW SHOW ANNOUNCEMENT: COPENHAGEN We’re pleased to announce an intimate show in Copenhagen, at Rust on September 1st! Where we will be playing 'And The Glass Handed Kites…’ in its entirety.Tickets are on-sale NOW here: https://mew.ffm.to/copenhagen2021.owe
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HELSINKI AND OSLO
Blog - MEW
HELSINKI AND OSLO Due to local restrictions still in place we have rescheduled our headline shows in Helsinki and Oslo to January 2022. Tickets for the original dates will remain valid for the new dates: mew.ffm.to/live- January 27: The House of Culture, Helsinki.- ...
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Stephan Livera
Stephan Livera
Bitcoin Supercycle or nah? Date of writing: 27/05/2021 & Bitcoin price: $39,600 USD/BTC or 1 sat = $0.0004 USD Every now and again I […]
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Stephan Livera
Stephan Livera
SLP Bitcoin Custody Series Welcome to the Bitcoin Custody Interview Series. Hopefully you will enjoy this as a follow on from my prior Hardware […]
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