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Having trouble using NFC on the Coldcard mk4? Try tapping the backtwitter.com/rot13maxi/status/1575482505016541189
271 sats \ 0 comments \ @rijndael 1 Oct 2022 bitcoin
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Coldcard Mk2, Mk3, Mk4, Mk5, and Q Firmware Security Vulnerabilityengineering.block.xyz/blog/predictable-rng-fallback-and-32-bit-reseed-in-coldcard-firmware
11.4k sats \ 23 comments \ @k00b 31 Jul security bitcoin bitdevs
Edge Firmware for Coldcard Mk4 - Developer Previewwww.nobsbitcoin.com/edge-firmware-for-coldcard-mk4/
315 sats \ 0 comments \ @AR0w 13 May 2023 bitcoin
Caution with cold card mk4 quality control
291 sats \ 0 comments \ @elysia 6 Dec 2023 bitcoin
COLDCARD Mk4 started shippingtwitter.com/HodlDee/status/1516888381963313152
263 sats \ 10 comments \ @nvk 2 May 2022 bitcoin freebie
COLDCARD Release: Versions 5.5.1 (Mk4/Mk5) and 1.4.1Q (Q)xcancel.com/COLDCARDwallet/status/2072674581098447310
1939 sats \ 5 comments \ @hasherstacker 4 Jul bitcoin bitcoin_beginners bitdevs
Turn retired Coldcards into open source SecretKeeper with custom firmware & NFC
1795 sats \ 2 comments \ @anon 23h bitcoin
PSA: Advice Regarding the Coldcard Bug - Exploit - Hack - Theft
3111 sats \ 5 comments \ @BITC0IN 1 Aug bitcoin bitcoin_beginners
iOS wallets w/ NFC support? Experience using NFC signing devices on Android?
281 sats \ 2 comments \ @ev 22 Nov 2022 bitcoin
Coldcard Mk4 Firmware v5.1.4: Batch PSBT Sign, Bugfixes & Morewww.nobsbitcoin.com/coldcard-mk4-firmware-v5-1-4/
1186 sats \ 0 comments \ @BitcoinIsTheFuture 8 Sep 2023 bitcoin
Upgrade Your Coldcard - Video Tutorial on Cloning Your MK4 To The New Qyoutu.be/DPePJvAAiqY
231 sats \ 0 comments \ @BTCsessions 21 Mar 2024 bitcoin
Watch A 10-Year-Old Set Up A Coldcard Mk4youtu.be/Ttjvz5IuMSI?si=ijxEAkWP5IoGTtpI
253 sats \ 0 comments \ @BitcoinIsTheFuture 22 Jan 2024 bitcoin_beginners
COLDCARD Co-Signing - enforce spending policies with hardwarecoldcard.com/docs/coldcard-cosigning/
691 sats \ 7 comments \ @k00b 17 Apr 2025 bitcoin
Coldcard HW bug in the new Mk4 VirtDisk featuretwitter.com/COLDCARDwallet/status/1552681844067516418?s=20&t=_A_EeHZIiS7MpWUZqtN3Uw
376 sats \ 4 comments \ @m4 29 Jul 2022 bitcoin
COLDCARD Q Firmware v1.0.0 Released
1083 sats \ 5 comments \ @IgnaciobTato 14 Mar 2024 security
USDC to embrace tap-and-go payments after Apple opens up NFCcointelegraph.com/news/usdc-embrace-tap-and-go-payments-apple-opens-up-nfc
348 sats \ 2 comments \ @Rsync25 15 Aug 2024 news
The Bolt Card, an LNURL-powered NFC cardtwitter.com/CoinCornerDanny/status/1526573313962680321
437 sats \ 16 comments \ @fiatjaf 17 May 2022 bitcoin
COLDCARD Mk4 firmware 5.0.7 release (big list)twitter.com/COLDCARDwallet/status/1577742167967432704
468 sats \ 0 comments \ @nvk 9 Oct 2022 bitcoin freebie
Coldkite Coldcard Reproducible Builds
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Coldcard RNG Vulnerability Analysis by Device & Firmwareitsrealfake.github.io/2026/07/31/coldcard-rng-vulnerability-analysis.html
1553 sats \ 11 comments \ @itsrealfake 31 Jul security bitcoin_beginners
When LN wallets will have natural "Tap to pay" option via NFC ?
2011 sats \ 3 comments \ @jk_14 29 May 2023 bitcoin
ColdCard Entropy Bug: An Investigative History
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