Collectors & Dealers
You track provenance, spot fakes, and understand how documentation affects value. We want to learn how you verify authenticity today — and where the gaps are.
String Authority is building the permanent historical record for guitars — where instruments, models, and the people who document them accumulate verified, lasting context.
This isn't a platform looking for users. It's infrastructure looking for collaborators.
We're in active discovery, conducting short conversations with people across the guitar ecosystem to understand what matters, what's broken, and what should exist. If any of the following describes you, we'd like to talk.
You track provenance, spot fakes, and understand how documentation affects value. We want to learn how you verify authenticity today — and where the gaps are.
You create instruments and know what information should travel with them. We want to understand how you document your work and what gets lost over time.
Your videos and articles are historical records — but they're scattered across platforms with no structured attribution. We're designing a system where your contributions become permanent, verified, and linked to the instruments and models you cover.
You manage inventory, field buyer questions, and deal with inconsistent data across platforms. We want to learn what information you wish you had — and what you're tired of re-entering.
You capture and preserve visual history. We want to understand your workflows, how you organize and attribute images, and what would make your archive more useful over time.
You research and publish the stories behind instruments. We're building infrastructure designed for citation, attribution, and permanence — and we'd like your input on what that should look like.
A 20-minute video conversation.
No pitch, no demo —
how you work, what's broken, what should exist. No pitch, no demo. Just listening.
Your input directly shapes what we build.
Book a call directly Schedule a 20-minute conversation at a time that works for you. → Schedule on Cal.com
Or leave your contact info We'll reach out to find a time. → Contact form
The guitar world runs on oral history, scattered documentation, and institutional knowledge that disappears when people retire or move on. We're building the system that should have existed decades ago — but it only works if it's shaped by the people who actually live this.
If you care about guitars lasting — not just physically, but as documented, attributed, knowable artifacts — we'd like to hear from you.
String Authority is a project by Mariano Rozanski, a software engineer and product leader building tools for guitar provenance, lore, and documentation. Guitar Times is the weekly news digest of String Authority, curating important stories, auctions, and releases from across the guitar world.