mattcrv
Matt Carvalho

chronicling the products layered upon the bitcoin protocol. dying on the crypto(graphy)-abolitionism hill.

Public Key

npub1sedkh5uwyfypc3vfh39svzsvpnqnqnaae2dquvug6s5zm29msw3qxsekcj

NIP-05 Address

me.mattcrv.com

Profile Code

nprofile1qqsgvkmt6w8zyjqugkymcjcxpgxqesfsf77u4xswxwydg2pd4zac8gspz4mhxue69uhhyetvv9ujumt0wd68ytnsw43qz9rhwden5te0wfjkccte9ejxzmt4wvhxjmcxrlqv7

Publishing to

relay.mostr.pub

relay.damus.io

nos.lol

Author Public Key

npub1sedkh5uwyfypc3vfh39svzsvpnqnqnaae2dquvug6s5zm29msw3qxsekcj

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Last Notes

2026-01-03 21:19:38 UTC

Jan 3,
2009: $0
2010: $0
2011: $0
2012: $5
2013: $13
2014: $803
2015: $315
2016: $434
2017: $1,020
2018: $15,083
2019: $3,792
2020: $7,335
2021: $32,995
2022: $46,429
2023: $16,670
2024: $42,865
2025: $96,732
2026: $90,113

2025-11-08 17:56:09 UTC

All Bitcoin conferences should follow @nprofile…vqyk’s example: no fiat payments allowed.
https://blossom.primal.net/4939ddfc05e99d68568517981e138b69467dce60d25e29372a8a993ff4c4f1d2.jpg

2025-01-23 21:10:09 UTC

Boe Jiden's Executive Order 14067 placed "the highest urgency on research and development [...] of a United States CBDC."
Donald just revoked it and prohibited CBDCs. This seems to be the only news worth BREAKING. 🗞️
https://m.primal.net/NwtV.png

2024-12-05 03:20:45 UTC

Sat/Cent parity achieved! Now, 0.00000001 BTC is worth more than $0.01. 🪙
https://m.primal.net/Mnux.png

2024-12-05 03:15:40 UTC

Buy the dip! Bitcoin won’t stay this cheap for long
https://m.primal.net/Mnul.png

2024-11-27 23:27:52 UTC

- reply

appreciate the transparency. it's reassuring to know that refurbished devices won’t be reshipped

2024-11-27 23:24:13 UTC

Data breach alert: 250,000 Brazilians' IDs, credit card details, and bank statements leaked from 7 financial institutions. 🇧🇷
KYC is the illicit activity. 🪪
https://m.primal.net/MixI.png

2024-11-23 19:54:55 UTC

Kendrick dropping Bitcoin bars on his new album is bullish 🐂
Drake bribing snitches in Bitcoin is bearish 🤡
https://m.primal.net/MfSy.jpg

2024-11-15 12:56:13 UTC

Thrilled to see Bitkey rolling out new on-ramps with transparent pricing! I didn’t expect them to go beyond CashApp. 🎢
https://m.primal.net/MDur.png
https://m.primal.net/MDut.png

2024-11-14 23:46:27 UTC

cool to see more wallets embracing timelocks
h/t @npub1s0k…zcfm
https://m.primal.net/MDWY.png

2024-09-19 03:46:52 UTC

- reply

Curioso pelo que está por vir. Se adicionassem features que justifiquem o aumento de preço, eu consideraria voltar.

2024-09-18 14:05:41 UTC

Closing my Xapo account today.
It served me well for over an year.
Now seeking a Bitcoin-friendly fiat bank that:
🥾 Doesn't hike prices by 567% without offering anything new
🤹‍♂️ Prioritizes core services over yield gimmicks
https://m.primal.net/KtrA.png

2024-09-17 23:07:26 UTC

Taxation is theft, and using Bitcoin as a Medium of Exchange is self-defense.

2024-09-17 12:43:53 UTC

Excited about @npub19yf…mc68's Bitcoin-backed credit card! 💳
Locking collateral in a multisig escrow lowers risk for lenders and slashes interest rates.
Spend without selling. Perfect for holders who live on the Bitcoin standard and need a bridge to the fiat world.
https://m.primal.net/Ksii.png

2024-09-16 18:56:58 UTC

- reply

He mistakenly selected SIGHASH_NONE when broadcasting his transaction.
This allows anyone to RBF his transaction and change the outputs.
A bot that steals inscriptions replaced his transaction and burned 0.79 BTC to mining fees.
Sparrow now has a warning, but IMO this options shouldn't even be clickable for single input transactions:
https://github.com/sparrowwallet/sparrow/commit/8d7308bc37fbf957c32fd9756086b35d9585740e

2024-09-16 18:43:47 UTC

- reply

💯. And that dangerous shit shouldn't be clickable!
https://github.com/sparrowwallet/sparrow/commit/8d7308bc37fbf957c32fd9756086b35d9585740e

2024-09-16 13:21:46 UTC

Someone recently lost 0.8 BTC after stepping on an option Sparrow probably shouldn't even have exposed.
https://m.primal.net/Krmc.png
Footguns everywhere. Tread lightly! 💣
https://m.primal.net/Krmd.png

2024-08-21 13:12:34 UTC

reading this headline gave me headache
https://m.primal.net/KGey.jpg

2024-06-22 16:21:50 UTC

- reply

Awesome that you liked them! Once barefoot, it’s hard to go back to regular shoes 👣
Vivo and other brands sell models for winter: https://www.vivobarefoot.com/

2024-06-20 15:21:28 UTC

I just set up my @npub1tft…xar5 Vault, and the user experience was incredibly smooth! 🔐
Using Bitcoin-only hardware wallets like the @npub1jg5…6n8n Jade makes multisig so much easier.
You don't even need to install companion apps like Trezor Suite or Ledger Live.
https://image.nostr.build/2b10f463307db532d1b62b9dd4d670de2b6bacf940f332bd5211cc831219e02c.png

2024-05-31 18:47:49 UTC

Days ago, Mt.Gox transferred 141,686 BTC in preparation for the upcoming distribution.
Today, a Japanese exchange loses 4,503 BTC.
Full circle.
https://m.primal.net/IUIo.png

2024-05-02 19:25:49 UTC

Running ark https://image.nostr.build/adca188a140e190ad29324fc90d3893becb7fe77c05058876245d11ad7c08377.jpg

2024-04-22 13:28:03 UTC

When @npub1jg5…6n8n Green upgraded from nLockTime to CheckSequenceVerify, users didn't care about adopting a new OP_CODE.
They cared about no longer needing to back up pre-signed transactions.
When wallets add support to covenants, most users won't care if it's CTV, CCV, or CAT...

2024-03-26 17:31:31 UTC

every time a mobile wallet asks you to back up 24 words instead of 12, a honey badger dies 🦡

2024-03-10 14:25:06 UTC

Bitcoin is for enemies.
Bitcoin is for people like Nayib Bukele.

2024-03-06 19:31:34 UTC

the best affiliate program for bitcoin creators is owning bitcoin

2023-09-01 17:03:13 UTC

Bitcoin wins because it monetizes ideology

2023-08-29 20:42:22 UTC

Fascinating to think that one day, we may look back at time-locked recovery paths in the same way we currently view bare multsig.