Habits. Community. Open software.

We build in public, bit by bit.

Why we build

Small consistent actions, stacked over time, create big results. Like stacking sats. Like stacking blocks. That's BitByBit.

Action over speculation. We ship.
Collaboration over competition. With the community, not against it.
Open over closed. Public code, documented decisions.
Long-term over short-term. Stack consistently. Compound.

What we're building

Three real apps, shipped at La Crypta hackathons. Try them and let us know what you think.

BitByBit Habits

Family habit tracker with sat rewards over Lightning.

Habits turns 'la mesada' (the kid's allowance) into a tool for financial education. Parents assign habits with sat rewards; kids complete them and receive real Bitcoin instantly via Lightning. Mesada 2.0.

Lightning Network · Real Bitcoin rewards
Family-first · Parents assign, kids complete
Mesada 2.0 · Real financial education

BitByBit Arena

Public challenges on Nostr — identity, proofs and zaps.

Arena started as a New Year's resolution experiment inside La Crypta — a few of us wanted to improve our habits and share progress by tagging each other on Nostr. Today it's that same loop turned into an app: any Nostr identity can create challenges, join, and earn NIP-58 badges that travel across Nostr clients.

Nostr-native · Identity, proofs, and payouts
NIP-58 badges · Achievements that travel with you
Permissionless · Anyone creates, anyone competes

CURSATS

Lightning checkout for teachers — buyers pay in sats, you choose how to get paid.

CURSATS turns any class or course into a Lightning checkout. Buyers always pay in sats; the seller picks how the money arrives — pesos to a CBU via Wapu, or sats to a Lightning Address.