raw₿it — Visual Raw Transaction Builder & Script Debugger
An interactive tool to build and understand Bitcoin transactions visually.
• Connect predefined nodes → see every byte update live
• Step through script execution with live stack view
• Full Python code behind each node
10 hands-on lessons included (P2PKH → SegWit, multisig, timelocks, payment channels, etc.) — all broadcast to testnet. More coming (Taproot, Lightning, covenants…).
Free · open-source · educational only
Try it: rawbit.io
Source: github.com/rawBit-io/rawbit
This was our @rawBit_io graduation call where we covered Taproot, Wrapped Segwit and more.
Congratulations to @andywong311 and Gradale who completely nailed the very first rawBit study cohort by exceeding the expectations with their results and attending 10 weekly sessions in a row. Well done guys!
Join the @rawBit_io study cohort tonight to:
- Build a 2-input P2WPKH transaction
- Understand shared midstate hashes
- See how SegWit ended quadratic hashing
Book in your calendars: discord.gg/6XPJ96sCY4?event=…
On today's @rawBit_io call we discussed MultiSig, went through the exercises and discussed bip110, difficulty adjustment, potential 51% attacks and more. See you next Monday!
BIP-110 is sold as the fix for "spam" and CSAM on Bitcoin. It stops neither - it just makes embedding more annoying and more harmful.
Example BIP110 compliant P2SH:
<240B><240B> OP_2DROP <pubkey> OP_CHECKSIG
156 P2SH outputs ≈ 73KB in one tx
Check out the complete tx construction in rawBit:
rawbit.io?s=s1_uq_OA5BufOQ
Classic P2SH inheritance has a weak spot — heirs must keep the redeemScript off-chain for years, and update it every time the owner changes the tx.
Lose it and the coins are stuck, even with the right private key.
Proposal — store it on-chain, encrypted with the heir's public key in an OP_RETURN.
Full demo in rawBit →
rawbit.io?s=s1_60Xc2Hwxw_s@lianabitcoin@nunchuk_io@CasaHODL
Shoutout to @andywong311 Gradale, @Harrisbigboy89 and other bitcoiners on the call for contributing to the session. We went through the flows, built a raw transaction and even broadcasted it to the testnet! See you next Monday.
Another nice call today, team. Special shoutout to Gradale, @andywong31 and @Harrisbigboy89 who shared their @rawBit_io transaction flows. Keep up the good work.
First cohort of our raw Bitcoin TX course @CodeOrangeDevs just started.
Today we built P2PKH from scratch in rawBit.
Thanks to @HRF and @OpenSats for making it possible.
16 bitcoiners on the @rawBit_io intro call. We went through the flow of building a raw bitcoin transaction and assigned homework to each participant. This is the very first rawBit study cohort ever. Making history over here!
See you next week Monday 11:00 UTC to continue: discord.gg/6XPJ96sCY4?event=…
Join the rawBit transaction cohort ✨
In this cohort we will go through : P2PKH, P2SH, P2PK, multisig, timelocks (nLocktime, nSequence, CSV, CLTV).
Building raw transactions visually on the canvas, executing Bitcoin Script and sending them to testnet.
One week left until we start our @rawBit_io study cohort.
- Scripts, SegWit, multisig, timelocks
- Hands-on with an interactive tool
- Accountability with bitcoiners
Sign up now: forms.gle/MfhS2u2dt13rJd4a8
@rawBit_io has been one of the most practical tools I’ve used to understand Bitcoin transactions. After a few weeks of hands-on use, the learning clarity is undeniable.
It enables visual transaction building, live byte level inspection, and step-by-step script execution with a stack view.
We’re looking to adopt it at @osguildHQ and @BitDevsMRU to strengthen hands-on Bitcoin education.
raw₿it — Visual Raw Transaction Builder & Script Debugger
An interactive tool to build and understand Bitcoin transactions visually.
• Connect predefined nodes → see every byte update live
• Step through script execution with live stack view
• Full Python code behind each node
10 hands-on lessons included (P2PKH → SegWit, multisig, timelocks, payment channels, etc.) — all broadcast to testnet. More coming (Taproot, Lightning, covenants…).
Free · open-source · educational only
Try it: rawbit.io
Source: github.com/rawBit-io/rawbit
Most Bitcoin tutorials (like @ChristopherA excellent “Learning Bitcoin from the Command Line”) teach you bitcoin-cli.
Great for real-world use, but they hide the internals.
rawBit is different: you build transactions visually and see the exact Python code behind every node.