Bitcoin Dev Project
@bitcoindevs.bsky.social
The go-to resource for developers to learn #bitcoin and related technologies. Get inspired to kickstart and grow your career in bitcoin open source software (₿OSS).
https://bitcoindevs.xyz
https://bitcoindevs.xyz
Pinned
The ₿OSS Challenge is designed to get you started in a career in open source. Deadline to apply is tomorrow, December 31.
Don't overthink it. Apply now and change your life in 2026.
Don't overthink it. Apply now and change your life in 2026.
December 30, 2025 at 8:50 PM
The ₿OSS Challenge is designed to get you started in a career in open source. Deadline to apply is tomorrow, December 31.
Don't overthink it. Apply now and change your life in 2026.
Don't overthink it. Apply now and change your life in 2026.
MacGyver left the start up life to work on silent payments.
Do you crave professional freedom to work on the things you believe are most impactful?
Do you crave professional freedom to work on the things you believe are most impactful?
December 28, 2025 at 12:22 AM
MacGyver left the start up life to work on silent payments.
Do you crave professional freedom to work on the things you believe are most impactful?
Do you crave professional freedom to work on the things you believe are most impactful?
THERE ARE FOUR DAYS LEFT TO APPLY FOR THE ₿OSS CHALLENGE
Since 2024 the ₿OSS Challenge has helped 20 developers become full time bitcoin open source software contributors.
Number 21 could be you 💪 Apply now.
Since 2024 the ₿OSS Challenge has helped 20 developers become full time bitcoin open source software contributors.
Number 21 could be you 💪 Apply now.
December 28, 2025 at 12:21 AM
THERE ARE FOUR DAYS LEFT TO APPLY FOR THE ₿OSS CHALLENGE
Since 2024 the ₿OSS Challenge has helped 20 developers become full time bitcoin open source software contributors.
Number 21 could be you 💪 Apply now.
Since 2024 the ₿OSS Challenge has helped 20 developers become full time bitcoin open source software contributors.
Number 21 could be you 💪 Apply now.
Enlightening! Testing! Inspiring!
That is how 2025 alum Sangbida describes the ₿OSS Challenge.
When she took it she was working on corporate side of #bitcoin. Now she is funded by @blockstream.bsky.social to contribute to Core Lightning ⚡️
That is how 2025 alum Sangbida describes the ₿OSS Challenge.
When she took it she was working on corporate side of #bitcoin. Now she is funded by @blockstream.bsky.social to contribute to Core Lightning ⚡️
December 22, 2025 at 8:32 PM
Enlightening! Testing! Inspiring!
That is how 2025 alum Sangbida describes the ₿OSS Challenge.
When she took it she was working on corporate side of #bitcoin. Now she is funded by @blockstream.bsky.social to contribute to Core Lightning ⚡️
That is how 2025 alum Sangbida describes the ₿OSS Challenge.
When she took it she was working on corporate side of #bitcoin. Now she is funded by @blockstream.bsky.social to contribute to Core Lightning ⚡️
There are just 10 days* left to apply to the ₿OSS Challenge.
* roughly 1,440 blocks
Write code used by countless people across the world.
Work on the best problems with the brightest minds.
Achieve professional freedom.
Join the ₿OSS Challenge today
* roughly 1,440 blocks
Write code used by countless people across the world.
Work on the best problems with the brightest minds.
Achieve professional freedom.
Join the ₿OSS Challenge today
December 22, 2025 at 7:14 PM
There are just 10 days* left to apply to the ₿OSS Challenge.
* roughly 1,440 blocks
Write code used by countless people across the world.
Work on the best problems with the brightest minds.
Achieve professional freedom.
Join the ₿OSS Challenge today
* roughly 1,440 blocks
Write code used by countless people across the world.
Work on the best problems with the brightest minds.
Achieve professional freedom.
Join the ₿OSS Challenge today
It can be tough to get into open source on your own.
When Marco started the ₿OSS Challenge he was trading options. Now he is funded by Brink to work on fuzz testing.
When Marco started the ₿OSS Challenge he was trading options. Now he is funded by Brink to work on fuzz testing.
December 19, 2025 at 4:11 PM
It can be tough to get into open source on your own.
When Marco started the ₿OSS Challenge he was trading options. Now he is funded by Brink to work on fuzz testing.
When Marco started the ₿OSS Challenge he was trading options. Now he is funded by Brink to work on fuzz testing.
📢 ATTN: developers interested in bitcoin open-source
👀 We are looking for participants for voluntary usability testing.
🖥️ During the session you’ll be asked to share your thoughts while interacting with a website prototype.
#usertesting #developers #design #ux #bitcoin #crypto
👀 We are looking for participants for voluntary usability testing.
🖥️ During the session you’ll be asked to share your thoughts while interacting with a website prototype.
#usertesting #developers #design #ux #bitcoin #crypto
a young boy is sitting at a desk in front of a computer screen which says myreactiongifs.com on the bottom
ALT: a young boy is sitting at a desk in front of a computer screen which says myreactiongifs.com on the bottom
media.tenor.com
December 19, 2025 at 3:51 PM
📢 ATTN: developers interested in bitcoin open-source
👀 We are looking for participants for voluntary usability testing.
🖥️ During the session you’ll be asked to share your thoughts while interacting with a website prototype.
#usertesting #developers #design #ux #bitcoin #crypto
👀 We are looking for participants for voluntary usability testing.
🖥️ During the session you’ll be asked to share your thoughts while interacting with a website prototype.
#usertesting #developers #design #ux #bitcoin #crypto
Meet David:
Before signing up for the BOSS Challenge, David was an algebra teacher.
After it he got a grant from OpenSats and now he’s a full time #bitcoin open-source developer working on compact block relay at Localhost Research.
Before signing up for the BOSS Challenge, David was an algebra teacher.
After it he got a grant from OpenSats and now he’s a full time #bitcoin open-source developer working on compact block relay at Localhost Research.
December 18, 2025 at 9:51 PM
Meet David:
Before signing up for the BOSS Challenge, David was an algebra teacher.
After it he got a grant from OpenSats and now he’s a full time #bitcoin open-source developer working on compact block relay at Localhost Research.
Before signing up for the BOSS Challenge, David was an algebra teacher.
After it he got a grant from OpenSats and now he’s a full time #bitcoin open-source developer working on compact block relay at Localhost Research.
Want a career in #bitcoin open source but feeling intimidated?
Sangbida and MacGyver talk about their experience on the Stephan Livera podcast transitioning from the corporate world to bitcoin open source development.
Join us for the bosschallenge.xyz and change your career in 2026.
#FOSS
Sangbida and MacGyver talk about their experience on the Stephan Livera podcast transitioning from the corporate world to bitcoin open source development.
Join us for the bosschallenge.xyz and change your career in 2026.
#FOSS
December 17, 2025 at 7:06 PM
Want a career in #bitcoin open source but feeling intimidated?
Sangbida and MacGyver talk about their experience on the Stephan Livera podcast transitioning from the corporate world to bitcoin open source development.
Join us for the bosschallenge.xyz and change your career in 2026.
#FOSS
Sangbida and MacGyver talk about their experience on the Stephan Livera podcast transitioning from the corporate world to bitcoin open source development.
Join us for the bosschallenge.xyz and change your career in 2026.
#FOSS
New Year, New You, New Career in Bitcoin
Don’t miss your chance to get your dream job working on Bitcoin. Get funded by Spiral, BTrust, Blockstream, Brink and others to contribute to something meaningful.
Apply for the BOSS Challenge today
bosschallenge.xyz
Don’t miss your chance to get your dream job working on Bitcoin. Get funded by Spiral, BTrust, Blockstream, Brink and others to contribute to something meaningful.
Apply for the BOSS Challenge today
bosschallenge.xyz
December 16, 2025 at 8:51 PM
New Year, New You, New Career in Bitcoin
Don’t miss your chance to get your dream job working on Bitcoin. Get funded by Spiral, BTrust, Blockstream, Brink and others to contribute to something meaningful.
Apply for the BOSS Challenge today
bosschallenge.xyz
Don’t miss your chance to get your dream job working on Bitcoin. Get funded by Spiral, BTrust, Blockstream, Brink and others to contribute to something meaningful.
Apply for the BOSS Challenge today
bosschallenge.xyz
The ₿OSS Challenge is back 🎉
Start your career in bitcoin open source software (₿OSS) and change your life forever.
bosschallenge.xyz
Start your career in bitcoin open source software (₿OSS) and change your life forever.
bosschallenge.xyz
₿OSS Challenge
₿OSS Challenge - start your career in bitcoin open source
bosschallenge.xyz
December 15, 2025 at 9:50 PM
The ₿OSS Challenge is back 🎉
Start your career in bitcoin open source software (₿OSS) and change your life forever.
bosschallenge.xyz
Start your career in bitcoin open source software (₿OSS) and change your life forever.
bosschallenge.xyz
Well, well, well. We finally did it.
We got ourselves a logo.
Meet the new Bitcoin Dev Project 👋
We got ourselves a logo.
Meet the new Bitcoin Dev Project 👋
December 1, 2025 at 10:49 PM
Well, well, well. We finally did it.
We got ourselves a logo.
Meet the new Bitcoin Dev Project 👋
We got ourselves a logo.
Meet the new Bitcoin Dev Project 👋
📢 Are you a #Rust dev that wants to learn more about bitcoin? Then you need to check out Bitcoin Dojo!
🦀 Learn #bitcoin protocol development with free, hands-on coding challenges. Reinforce your Rust skills while learning something new about bitcoin. It's a win-win 😉
bitcoindojo.dev
🦀 Learn #bitcoin protocol development with free, hands-on coding challenges. Reinforce your Rust skills while learning something new about bitcoin. It's a win-win 😉
bitcoindojo.dev
October 28, 2025 at 7:48 PM
📢 Are you a #Rust dev that wants to learn more about bitcoin? Then you need to check out Bitcoin Dojo!
🦀 Learn #bitcoin protocol development with free, hands-on coding challenges. Reinforce your Rust skills while learning something new about bitcoin. It's a win-win 😉
bitcoindojo.dev
🦀 Learn #bitcoin protocol development with free, hands-on coding challenges. Reinforce your Rust skills while learning something new about bitcoin. It's a win-win 😉
bitcoindojo.dev
Reminder that there is still time to apply for the Bitcoin Scholarship!
Contribute to #bitcoin and get a full year of your college tuition covered in return. Open to applicants anywhere in the world.
Apply by November 1! 👇
bitcoinscholarship.xyz
Contribute to #bitcoin and get a full year of your college tuition covered in return. Open to applicants anywhere in the world.
Apply by November 1! 👇
bitcoinscholarship.xyz
The Bitcoin Scholarship
100% of college tuition covered to encourage the brightest minds to contribute to bitcoin open source development
bitcoinscholarship.xyz
October 22, 2025 at 8:41 PM
Reminder that there is still time to apply for the Bitcoin Scholarship!
Contribute to #bitcoin and get a full year of your college tuition covered in return. Open to applicants anywhere in the world.
Apply by November 1! 👇
bitcoinscholarship.xyz
Contribute to #bitcoin and get a full year of your college tuition covered in return. Open to applicants anywhere in the world.
Apply by November 1! 👇
bitcoinscholarship.xyz
Stay updated on the highest signal bitcoin tech discussions, without drowning in 20,000+ emails.
Meet 📚 Bitcoin TLDR v2 📚
A curated, searchable, open-source summary of posts from the bitcoin-dev, lightning-dev, and Delving Bitcoin mailing lists.
Meet 📚 Bitcoin TLDR v2 📚
A curated, searchable, open-source summary of posts from the bitcoin-dev, lightning-dev, and Delving Bitcoin mailing lists.
September 16, 2025 at 2:40 PM
Stay updated on the highest signal bitcoin tech discussions, without drowning in 20,000+ emails.
Meet 📚 Bitcoin TLDR v2 📚
A curated, searchable, open-source summary of posts from the bitcoin-dev, lightning-dev, and Delving Bitcoin mailing lists.
Meet 📚 Bitcoin TLDR v2 📚
A curated, searchable, open-source summary of posts from the bitcoin-dev, lightning-dev, and Delving Bitcoin mailing lists.
🧰 Too much bitcoin tech knowledge is trapped in videos and podcasts
If only there was an easy way to unearth those insights and gems… 🤔
We wondered that too, so we redesigned Bitcoin Transcripts! 🚀
If only there was an easy way to unearth those insights and gems… 🤔
We wondered that too, so we redesigned Bitcoin Transcripts! 🚀
July 10, 2025 at 3:29 PM
🧰 Too much bitcoin tech knowledge is trapped in videos and podcasts
If only there was an easy way to unearth those insights and gems… 🤔
We wondered that too, so we redesigned Bitcoin Transcripts! 🚀
If only there was an easy way to unearth those insights and gems… 🤔
We wondered that too, so we redesigned Bitcoin Transcripts! 🚀
What's the deal with #bitcoin fees? How are they calculated? Where do they go? Let's have a look with a #DecodingBitcoin 🧵
A transaction's fee is equal to the total amount of bitcoin in the inputs, minus the total amount of bitcoin in the outputs.
A transaction's fee is equal to the total amount of bitcoin in the inputs, minus the total amount of bitcoin in the outputs.
May 18, 2025 at 6:54 PM
What's the deal with #bitcoin fees? How are they calculated? Where do they go? Let's have a look with a #DecodingBitcoin 🧵
A transaction's fee is equal to the total amount of bitcoin in the inputs, minus the total amount of bitcoin in the outputs.
A transaction's fee is equal to the total amount of bitcoin in the inputs, minus the total amount of bitcoin in the outputs.
Buckle up for today's #DecodingBitcoin🧵. It's a long one but we promise it's worth your time.
Today we're going to break down how to sign a #bitcoin segwit transaction. We'll use a real example from the BIP-143 test vectors (that’s one of the segwit BIPs!)
Today we're going to break down how to sign a #bitcoin segwit transaction. We'll use a real example from the BIP-143 test vectors (that’s one of the segwit BIPs!)
April 9, 2025 at 8:05 PM
Buckle up for today's #DecodingBitcoin🧵. It's a long one but we promise it's worth your time.
Today we're going to break down how to sign a #bitcoin segwit transaction. We'll use a real example from the BIP-143 test vectors (that’s one of the segwit BIPs!)
Today we're going to break down how to sign a #bitcoin segwit transaction. We'll use a real example from the BIP-143 test vectors (that’s one of the segwit BIPs!)
New tool in Decoding Bitcoin!
REORG CALCULATOR ⚒️
Computes the probability that an attacker could reorganize z blocks with a given % of the total network hashrate
Here’s the probability of an attacker reorganizing 6 blocks with 30% of the total hashrate
bitcoindevs.xyz/decoding/reo...
REORG CALCULATOR ⚒️
Computes the probability that an attacker could reorganize z blocks with a given % of the total network hashrate
Here’s the probability of an attacker reorganizing 6 blocks with 30% of the total hashrate
bitcoindevs.xyz/decoding/reo...
February 23, 2025 at 7:34 PM
New tool in Decoding Bitcoin!
REORG CALCULATOR ⚒️
Computes the probability that an attacker could reorganize z blocks with a given % of the total network hashrate
Here’s the probability of an attacker reorganizing 6 blocks with 30% of the total hashrate
bitcoindevs.xyz/decoding/reo...
REORG CALCULATOR ⚒️
Computes the probability that an attacker could reorganize z blocks with a given % of the total network hashrate
Here’s the probability of an attacker reorganizing 6 blocks with 30% of the total hashrate
bitcoindevs.xyz/decoding/reo...
We’ve got a good #DecodingBitcoin🧵for you today. The topic? 𝐄𝐧𝐝𝐢𝐚𝐧𝐧𝐞𝐬𝐬, AKA the order of bytes in a computer’s memory.
When we put it like that it sounds a little boring, but there’s something interesting, and dare we say 𝑎𝑛𝑛𝑜𝑦𝑖𝑛𝑔, about how bitcoin handles endianness…
When we put it like that it sounds a little boring, but there’s something interesting, and dare we say 𝑎𝑛𝑛𝑜𝑦𝑖𝑛𝑔, about how bitcoin handles endianness…
February 20, 2025 at 8:13 PM
We’ve got a good #DecodingBitcoin🧵for you today. The topic? 𝐄𝐧𝐝𝐢𝐚𝐧𝐧𝐞𝐬𝐬, AKA the order of bytes in a computer’s memory.
When we put it like that it sounds a little boring, but there’s something interesting, and dare we say 𝑎𝑛𝑛𝑜𝑦𝑖𝑛𝑔, about how bitcoin handles endianness…
When we put it like that it sounds a little boring, but there’s something interesting, and dare we say 𝑎𝑛𝑛𝑜𝑦𝑖𝑛𝑔, about how bitcoin handles endianness…
get going -> get good
by @visualizevalue
by @visualizevalue
January 31, 2025 at 5:00 PM
get going -> get good
by @visualizevalue
by @visualizevalue
Let's talk about the 2 ways to track user balances on decentralized networks
Account Model (#Ethereum): Tracks balances like a bank ledger (simple and intuitive).
UTXO Model (#Bitcoin): Tracks specific unspent outputs from transactions (complex but powerful)
a #decodingbitcoin🧵
Account Model (#Ethereum): Tracks balances like a bank ledger (simple and intuitive).
UTXO Model (#Bitcoin): Tracks specific unspent outputs from transactions (complex but powerful)
a #decodingbitcoin🧵
January 28, 2025 at 8:18 PM
Let's talk about the 2 ways to track user balances on decentralized networks
Account Model (#Ethereum): Tracks balances like a bank ledger (simple and intuitive).
UTXO Model (#Bitcoin): Tracks specific unspent outputs from transactions (complex but powerful)
a #decodingbitcoin🧵
Account Model (#Ethereum): Tracks balances like a bank ledger (simple and intuitive).
UTXO Model (#Bitcoin): Tracks specific unspent outputs from transactions (complex but powerful)
a #decodingbitcoin🧵
There is an oft-repeated sentiment in the community that #bitcoin does not need you. While bitcoin is designed to be resilient, we 𝑑𝑜 need you.
Bitcoin needs all the talent and energy it can gather to solve some of the most difficult technical problems of our time.
Bitcoin needs all the talent and energy it can gather to solve some of the most difficult technical problems of our time.
January 25, 2025 at 1:03 PM
There is an oft-repeated sentiment in the community that #bitcoin does not need you. While bitcoin is designed to be resilient, we 𝑑𝑜 need you.
Bitcoin needs all the talent and energy it can gather to solve some of the most difficult technical problems of our time.
Bitcoin needs all the talent and energy it can gather to solve some of the most difficult technical problems of our time.
Reposted by Bitcoin Dev Project
The Saving Satoshi case study in the Bitcoin Design Guide is live. It provides lots of background about this unique and ambitious project. I'm super thankful to and proud of everyone who chipped in (you're all ₿OSSes).
bitcoin.design/guide/case-s...
bitcoin.design/guide/case-s...
December 17, 2024 at 3:09 PM
The Saving Satoshi case study in the Bitcoin Design Guide is live. It provides lots of background about this unique and ambitious project. I'm super thankful to and proud of everyone who chipped in (you're all ₿OSSes).
bitcoin.design/guide/case-s...
bitcoin.design/guide/case-s...