Jade air-gapped QR support is new in the @Blockstream desktop app. Run Jade Plus fully air-gapped and the device never touches your computer. PIN unlock, wallet import, address checks and signing all happen over QR codes, read by the camera on the device.

@KryptoShogun @adam3us @iman_ava @pastorcoin Yes - SeedQR + Temporary Signer loads the seed for that session and does not keep a PIN-encrypted wallet on the device. Once you power the device off, seed is wiped.

Blockstream Jade can hold a duress PIN, a second PIN separate from your real one. Enter it under pressure and Jade erases the wallet, so what's handed over is an empty device. There is no undo. Back up your recovery phrase first, and choose carefully when to use it.

The DIY Signing Device Revolution is Just Beginning - by @KeithMukai About @SeedSigner, @selfcustodykrux, @BlockstreamJade, @SpecterDIY Special thanks to @StepanSnigirev and @YTCryptoGuide

These are all you need for @BlockstreamJade Dice Roll system 16x16x8 =2048 1 roll has 2048 unique combinations BIP39 has 2048 unique words 4 bits / 4 bits / 3 bits Each roll is 11bits of entropy 1 BIP39 word is 11 bits Extremely geeky, but Perfect number symmetry

It is absurdly cheap to buy hardware wallets rn see the jade as an example the bank of england could set up multi vendor multi-sig today for the Governor, his Money Printer in Chief and the Paper Cut Security Lead for just £200 a head! they just need to add a trezor and a bitbox each it's never been cheaper to custody 60,000 BTC!! 🇬🇧🇬🇧

Bitcoin self-custody really lands when you can onboard in person. Thanks @lexbitcoinorg for hosting. Any meetup can request Blockstream Jade hardware wallets for giveaway and demonstration purposes through @Blockstream Local, plus a Bitcoin 101 and Jade 101 deck. Apply:

This week was a humbling reminder to reexamine my threat models. Multi-vendor multisig can diversify risk. New @SOVsessions tutorial Desktop: @SparrowWallet + @BlockstreamJade @Trezor @BitBoxSwiss Mobile: @nunchuk_io + @SeedSigner @BlockstreamJade 👇

PSA: Whether you paid for a Jade or received one free, we do not want fluff reviews. We want cold-hearted, down-to-earth reviews. Pointers. Ideas. Critiques. And your code contributions / PRs. We aim to make the best hardware wallet in the space. That only happens when the community is invited to scrutinize and innovate with us. Come help us build Jade better.

Gen Z is investing earlier than any generation, often into assets they never actually control. @kinetic_finance breaks down the trend and the way forward: bitcoin in self-custody with @BlockstreamJade, a fully open source Bitcoin hardware wallet.

"Use a real secure element" quietly assumes the SE is the whole trust boundary, and that the seed is structurally locked inside it. Neither has held up. Ledger Recover shipped a firmware path that shards the seed out to three custodians. When people objected, Ledger's answer was that firmware capable of key extraction had "always been possible" to write, and that users had simply been trusting Ledger not to ship it. So the actual model isn't "the silicon won't let the seed out," it's "we promise not to." BOLOS is closed, so there's no way to check the promise is being kept, and the chip documentation sits behind an NDA, so you can't check the layer underneath it either. Jade puts the gate outside the device, where you can run the oracle yourself and read the code. Worth remembering the trust boundary took a while to settle, too. On the original Nano S the SE didn't drive the screen or the buttons, so an attacker owning the MCU could show you one address while the SE signed another. Ledger moved the display into the SE from the Nano X onward, which is a tacit admission that "keys are in the secure element" was never the whole story. On your point about "breaking the ESP32," the level of evil maid attack needed to take advantage of EM fault injection is akin to someone replacing a Ledger device completely and logging PIN entries. Neither of those is a silicon problem. None of which makes Jade invulnerable. The ESP32 is a general purpose MCU and it behaves like one under a lab attack. But Jade is the only wallet where I can read every line of the firmware, run the oracle myself, and see the whole security argument end to end rather than being handed a certificate and asked to trust it. For a device holding real money, that tradeoff isn't close. Jade is genuinely great, and I think it's underrated precisely because its threat model is honest about what silicon can and can't do.

Missed a few cool features of the @BlockstreamJade! ➡️ Supports Miniscript ➡️ Can store and generate 2FA codes ➡️ LN payments can go to cold storage via swaps to Liquid ➡️ BIP85 deterministic generation of multiple child seeds