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.

One COLDCARD, Many Wallets: Better Backups with BIP-85
COINKITE Blog
One COLDCARD, Many Wallets: Better Backups with BIP-85 Every new wallet creates another seed phrase to record, hide, duplicate, and eventually recover. BIP-85 gives COLDCARD users another option: derive a different seed for each compatible wallet from one protected parent, without entering the parent seed into any of ...
Posted:
arca Reservations Are Open
COINKITE Blog
arca Reservations Are Open Reservations are open for arca, the physical digital safe built for secrets you cannot afford to lose—our personal data haven. A $99 USD partial prepayment per unit reserves a place in the limited first batch, currently targeting January 2027.
The tentative ...
Posted:
COINKITE Blog
Why mempool.space Matters for Bitcoin Users Most people first open mempool.space after something has gone wrong.
A payment has not confirmed. A wallet says the fee is too low. Somebody insists a transaction was sent, but the recipient cannot see it. Bitcoin is working; the user just ...
Posted:
ELLIPAL - ELLIPAL News
Is a Hardware Wallet Safe? What It Protects, and What It Does Not (2026) A hardware wallet is safe from remote theft, the attack behind most crypto loss, because the keys stay offline. But safe is not invulnerable. What it protects against, where physical and human risks remain, and how to use one well.More ...
Posted:
COINKITE Blog
Offline Is Not Enough: COLDCARD vs a Disconnected Phone Pull the SIM. Wipe the phone. Delete every app except the wallet. Put it in a drawer and call it cold storage. You have improved a phone. You have not built a hardware wallet.
We built COLDCARD around a harsher assumption: ...
Posted:
Casa Blog
Casa Blog
From Single Point of Failure to Full Sovereignty: A Portfolio Manager’s Story TLDR:After a sophisticated scam nearly cost him his bitcoin, a veteran portfolio manager realized his digital asset custodian were a single point of failure. Casa empowered him with true self-custody: multi-signature vaults that require multiple keys to move funds, encrypted ...
Posted:
ELLIPAL - ELLIPAL News
Ledger vs SafePal (2026): Ecosystem or Entry Price? Ledger vs SafePal for 2026: the deepest ecosystem against the cheapest air-gapped entry. The quiet headline is which architecture the challenger chose to copy, and the ELLIPAL Titan 2.0 is its original.More
Posted:
ELLIPAL - ELLIPAL News
Trezor vs Tangem (2026): Transparency or Simplicity? Trezor vs Tangem: maximum auditability against maximum simplicity, and what each asks you to give up. Plus the ELLIPAL pair that avoids both prices.More
Posted:
Bitcoin Core
Bitcoin Core 29.4 released Bitcoin Core version 29.4 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 ...
Posted:
ELLIPAL - ELLIPAL News
Ledger vs Tangem (2026): Full Device vs Simple Card Ledger vs Tangem for 2026: Ledger for ecosystem and features, Tangem for card-simple seedless minimalism. Each asks you to give something up, a connection surface or seed portability. See where the ELLIPAL Titan 2.0 and X Card fit.More
Posted:
Bitcoin Core
Bitcoin Core 30.3 released Bitcoin Core version 30.3 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 ...
Posted:
Bitcoin Core
Bitcoin Core 31.1 released Bitcoin Core version 31.1 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 ...
Posted:
Casa Blog
Casa Blog
A Social Engineering Story Analysis of a call from a social engineer posing as Google support.
Posted:
COLDCARD 5.5.1 and 1.4.1Q
COINKITE Blog
COLDCARD 5.5.1 and 1.4.1Q New COLDCARD Release: Versions 5.5.1 (Mk4/Mk5) and 1.4.1Q (Q)
Coinkite’s COLDCARD 5.5.1 and 1.4.1Q firmware release brings updated
BIP-322 support for proof-of-reserves and message-signing PSBTs,
improved WIF Store workflows for spending paper-wallet or WIF keys while
keeping private keys air-gapped, and major Q-only upgrades ...
Posted:
Paper spam attempts
COINKITE Blog
Paper spam attempts Remember letterhead? Now it’s the Newest Affinity Scam!
About Recent Physical Letters
We have received concerns from a few of our customers regarding a
letter apparently from “Coinkite” asking them to upgrade their firmware for
“Post QUanTUM” reasons.
This is a scam to steal your ...
Posted:
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 ...
Posted:
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 ...
Posted:
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 ...
Posted:
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. ...
Posted:
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
Posted:
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.- ...
Posted:
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 […]
Posted:
JAPAN 2021 SHOWS CANCELED
Blog - MEW
JAPAN 2021 SHOWS CANCELED MEW’s Japan tour originally scheduled on Jan16th – Jan19th is cancelled due to current situation of COVID-19 all over the world.Ticket refunds will be available from the point of purchase.We’re looking forward to returning to Japan and being able to ...
Posted:
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 […]
Posted: