Hey, We’re Hoseki.
We’re building towards a more connected financial world where Bitcoin is the global standard for money, and proving reserves is secure and easy.
Our Story.
Hoseki was founded to solve a missing piece in the Bitcoin ecosystem: the ability to prove ownership with the same confidence and usability as traditional finance.
While Bitcoin gives users full custody and control, it has lacked the financial infrastructure needed to interact with the real world—especially in situations like underwriting, credit, and financial disclosures.
We saw this gap and built Hoseki to close it. Our mission is to empower Bitcoin holders with tools that make their assets visible, verifiable, and usable—without ever compromising custody.
Our Team
Meet The Hoseki Crew
The brains (and hearts) behind everything we build.
Sam Abbassi
Founder and CEO. Prior to Hoseki, Sam worked as the Director of Bitcoin products at Fidelity, focusing on self custody solutions and proof of reserves.
Cory Wilbur
CTO and Head of Product at Hoseki, has over a decade of experience in Bitcoin, previously leading teams at Strike and Circle.
Erik Cativo
Drives the full product design vision at Hoseki and explores bitcoin backed ecash on the side.
Ben Knab
Head of Engineering
Vini Rocha
Vini is a libertarian developer and passionate Bitcoin enthusiast who enjoys helping others get started. He believes in individual freedom and the power of decentralized information.
In The Press
Learn More About Us
Coverage from leading publications and beyond.
Sam Abbassi on Why Proof of Reserves Matters Now
Bitwise Become First To Disclose Bitcoin ETF Holdings Address
Stillmark Founder on Bitcoin Topping $65,000
Ledn Taps Hoseki for Bitcoin Proof-of-Asset Service Ahead of Mortgage Launch
Avoiding the Bitcoin ETF Rug Pull with Sam Abbassi
Do You Own Your Crypto? w/ Sam Abbassi
Sam Abbassi | From Neuroscience to Bitcoin Proof of Reserves
Hoseki To Launch Open Beta for Bitcoin Proof of Assets Product.
Japanese public company Metaplanet partners with Hoseki to launch Bitcoin proof of reserves.
Australian Bitcoin ETF to Implement Proof of Reserves with Hoseki
Monochrome Bitcoin ETF (Ticker: IBTC) Sets New Transparency Standard with Hoseki Partnership
OUR INVESTORS
Trusted by Bitcoin’s Most Respected Investors
We’re backed by pioneers and builders who believe in financial transparency and the future of Bitcoin.
