raw₿it — Visual Bitcoin raw Transaction Builder

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 ('Show code' in node menu)

16 hands-on lessons + exercises included (P2PKH, P2SH, SegWit, multisig, timelocks, payment channels, Taproot) — all broadcast to testnet. More coming (Coinjoin, Lightning, Mining …).

Free · open-source · educational only

rawbit.io

https://github.com/rawBit-io/rawbit

Human Rights Foundation and OpenSats grantee
https://hrf.org/latest/hrfs-bitcoin-development-fund-announces-support-for-26-projects-worldwide/

https://opensats.org/blog/seventeenth-wave-of-bitcoin-grants