Overview
ProofSpace is a tool that lets organizations issue digital proofs (think a tamper-proof online version of an ID card, a diploma, or proof of age) and accept those same proofs back later when someone wants to log in, sign up, or check out1. The people receiving the proofs hold them in a free phone app and reuse them anywhere else they're accepted, the way you might show the same library card at any branch.
The platform pairs a business dashboard with a free mobile wallet app, built on the Cardano blockchain through Atala PRISM, an open-source identity toolkit originally developed by Input Output Group for Cardano1. ProofSpace itself is run by ZAKA Group Ltd., a London-based company that rebranded from ZAKA to ProofSpace in March 20222.
Key Features
- Set up credentials without writing code. A web dashboard lets organizations design what a credential looks like, who it's issued to, and what gets checked, all without a developer in the loop1.
- Replace passwords with a phone scan. Visitors register or log in by scanning a QR code with the ProofSpace app, so the site never has to store or reset a password for them3.
- Verify IDs from almost anywhere. The platform handles document checks across 11,000 ID types in more than 230 countries and 48 languages, plus account verification for seven major social platforms3.
- Share only what's needed. People can prove a single fact (like being over 18) without handing over the underlying document, and organizations can set rules to auto-delete data after a defined period1.
- ID2020-certified mobile app. Ledger Insights reports the ProofSpace mobile app was the third product worldwide to earn certification from the ID2020 Alliance, a digital-identity standards body whose backers include Microsoft, Accenture, and the Rockefeller Foundation4.
What to Expect
ProofSpace is a business-to-business product. Most people who meet it do so because an organization they're already dealing with (a university, a marketplace, a community platform, a government program) asks them to install the free ProofSpace app to receive a credential. From then on, the same app holds every credential they collect, and they reuse it elsewhere without having to verify themselves again1. Organizations curious about identity tooling can sign up for the dashboard themselves and try the flow before building anything custom.
Pricing starts at a free tier covering up to 15 monthly active users. Paid Build and Grow plans add fixed annual or monthly fees, with per-interaction charges kicking in past about a thousand credentials a month5. Technical reference material lives in a public knowledge base, and the team has been written up in Forbes and the Wall Street Journal. ProofSpace has also submitted eight community-funded proposals through Cardano's Project Catalyst program (Funds 8 to 10), covering KYC checks, mental-health credentials, ADA payments tied to identity flows, and translations of the platform into Japanese, Spanish, and Swahili.
