Programmer. I contribute to open source in my spare time, mostly around Bitcoin and local-first software.
I'm a programmer from Brazil, living in Madrid. I've been writing software for a little over twenty years and I still enjoy it.
In my free time I contribute to open source, mainly Drivechain (BIP300/301) and Layer Two Labs sidechains, and I build small tools I want to use myself: local-first apps, a Lisp for personal data, and a few games.
Blog: Pensaduras 路 GitHub 路 santacroce-tech 路 X / Twitter 路 Email
- Bitcoin & Drivechain: simplepool, forknet-bootstrap, btc-keytool, hashrate_derivative
- Upstream contributions: bip300301_enforcer, bip300_bip301_specifications, cusf-enforcer-mempool, thunder-rust
- EELisp & editors: eeditor-next, eelisp-rs
- Apps & products: Qvault, Zoetrope, SuperSynch, Finance Tracker
- Cryptography, ZK & security: zklisp, chainlog, bitcoin-onn-quantumlike, zkgame
- Games: Millennium, Parcels, Societies, Harrow Reach
More, with descriptions, at rsantacroce.github.io.



