Focused engineering for Nostr and Bitcoin products
Threenine helps aligned teams build products around identity, signing, publishing, payments, privacy-sensitive UX, and digital sovereignty.
What we are best at
Specialist product work, not generic software contracting.
We are strongest when the work involves real protocol constraints, trust boundaries, user control, and product decisions that affect identity, keys, payments, publishing, or privacy.
Trust-aware UX
Clear consent flows, safer approval patterns, and product behaviour that respects real security boundaries.
Identity and signing
Product work shaped around identity control, account flows, signers, and permission-aware interactions.
Publishing and content flows
Better tools and workflows for creation, publication, distribution, and user-owned content models.
Bitcoin-aligned product design
Payment journeys, wallet-connected flows, and product architecture that respects ownership and digital sovereignty.