The acquisition consolidates what was already a close working relationship. ZKPassport circuits are built using Noir, the zero-knowledge domain-specific language developed by Aztec. Before the deal closed, Aztec had already deployed ZKPassport in two high-stakes contexts: gating access to its testnet sequencer/validator onboarding to filter out Sybil attacks, and verifying participant identity during its December 2024 community token sale, which raised approximately $61 million from more than 16,700 participants using Uniswap Labs' Continuous Clearing Auction mechanism.

Prior to the acquisition, ZKPassport operated under a split structure. The protocol itself was a non-profit public good, while Obsidion Labs served as the for-profit commercial layer built on top of it by the same founding team. The co-founders described Obsidion as a privacy-focused, fintech-style application. The acquisition folds both entities into Aztec Labs, removing the structural separation and placing long-term development under a single, well-capitalised entity. Aztec has raised more than $119 million in total funding, including a $100 million Series B in December 2022 led by a16z, with participation from Paradigm and Ethereum co-founder Vitalik Buterin. Following the December 2024 community token sale, the company conducted its Token Generation Event on February 11, 2026.

How ZKPassport Works

ZKPassport allows users to tap the NFC chip embedded in a biometric passport, national ID card, or residence permit using their smartphone. The app reads the chip, verifies the issuing country's cryptographic signature against the International Civil Aviation Organization's global public key infrastructure, and generates a zero-knowledge proof entirely on-device. No personal data leaves the phone. The resulting proof can attest to specific attributes, such as age, nationality, or personhood, without revealing any of the underlying personal data.

The protocol currently supports documents from more than 130 countries that follow ICAO 9303 standards. The app is available on both the App Store and Google Play.

Aztec CEO Zac Williamson described the technology in a prior interview with Crypto.news: "You can tap your passport to your phone and get a ZKP that shows you have a valid passport. You can choose what information you want to disclose, your nationality, your date of birth, your name, whatever you decide."

Neither co-founder Michael Elliot nor Théo Madzou commented publicly on the acquisition, and no acquisition-specific statements from either founder were available at the time of publication.

ZKPassport competes in a growing segment alongside Self Protocol, Rarimo, and Holonym, which acquired Gitcoin Passport for $10 million in a comparable ZK identity acquisition.

Regional Access Remains Uneven

The acquisition carries real implications for users outside Western markets, and not all of them are straightforward.

In India, the largest potential user base by population, the most widely held identity document is Aadhaar, the government's centralised biometric system with over one billion enrolled users. Aadhaar cards do not support NFC scanning and cannot currently be used with ZKPassport. Indian passport holders can use the protocol, but passport penetration in India remains low, estimated at roughly 5 to 6 percent of the population, a figure that should be treated as approximate pending independent verification against a named primary source. Pakistan, Bangladesh, Nepal, and Sri Lanka issue ICAO-compliant biometric passports, making their holders eligible in principle, though no region-specific rollout data is available.

Hardware requirements add another layer of friction across South Asia and large parts of Africa. ZKPassport's app exceeds 400MB in size and can require up to 2GB of RAM for ECDSA-based identity proofs. Initial proof generation takes between 10 and 50 seconds. These demands are manageable on flagship devices but present real barriers on the mid-range and entry-level smartphones that dominate emerging markets. Tekedia, a Lagos-based technology analysis publication, has specifically flagged that ZK proof integration has the potential to exacerbate existing digital divides. User-reported issues in ZKPassport community forums have also flagged scanning problems with some African passports and ID cards, though the specific countries affected have not been publicly confirmed. Nigeria and Kenya, the continent's two largest crypto markets by volume, represent a particularly important test of whether Aztec can extend the technology's reach meaningfully into the Global South.

The Ethereum Foundation has already provided an early precedent for that kind of reach. It used ZKPassport to distribute Devcon ticket discounts across 11 Latin American countries, the most documented instance to date of the protocol operating in an emerging-market context.

The open-source commitment is material in this context. Developer communities in South Asia and Africa frequently build localised forks and community-maintained tooling rather than relying on first-party distribution. By keeping the protocol and iOS app openly licensed, Aztec avoids foreclosing that kind of participation. The existing Aztec stack is published under the Apache 2.0 licence; whether ZKPassport will be released under the same terms has not been confirmed at the time of publication.

What Comes Next

Aztec's network is still in active development. In March 2026, the company disclosed a critical network vulnerability, with a fix scheduled as part of a v5 release targeted for July 2026. The team has also projected that block times will drop from the current 36 to 72 seconds to approximately 4 seconds by the end of 2026. Underpinning that ambition is PLONK, the ZK proof system co-invented by CEO Zac Williamson that has become one of the most widely deployed in the industry, improving approximately 250 times in speed since 2019 and giving Aztec a credible foundation from which to advance ZKPassport's proving performance.

The strategic logic of the ZKPassport acquisition fits within a broader thesis Aztec has been building toward: that on-chain privacy is a prerequisite for mainstream adoption, not a niche feature. Whether hardware optimisation and broader document support follow will determine how far beyond early adopters the technology can actually reach.