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<div>ZKPs can prove I'm old enough without telling you my age</div>

Opinion by: Andre Omietanski, General Counsel, and Amal Ibraymi, Legal Counsel at Aztec Labs

What if you could prove you’re over 18, without revealing your birthday, name, or anything else at all? Zero-knowledge proofs (ZKPs) make this hypothetical a reality and solve one of the key challenges online: verifying age without sacrificing privacy. 

The need for better age verification today

We’re witnessing an uptick in laws being proposed restricting minors’ access to social media and the internet, including in Australia, Florida, and China. To protect minors from inappropriate adult content, platform owners and governments often walk a tightrope between inaction and overreach. 

For example, the state of Louisiana in the US recently enacted a law meant to block minors from viewing porn. Sites required users to upload an ID before viewing content. The Free Speech Coalition challenged the law as unconstitutional, making the case that it infringed on First Amendment rights.

The lawsuit was eventually dismissed on procedural grounds. The reaction, however, highlights the dilemma facing policymakers and platforms: how to block minors without violating adults’ rights or creating new privacy risks.

Traditional age verification fails

Current age verification tools are either ineffective or invasive. Self-declaration is meaningless, since users can simply lie about their age. ID-based verification is overly invasive. No one should be required to upload their most sensitive documents, putting themselves at risk of data breaches and identity theft. 

Biometric solutions like fingerprints and face scans are convenient for users but raise important ethical, privacy, and security concerns. Biometric systems are not always accurate and may generate false positives and negatives. The irreversible nature of the data, which can’t be changed like a regular password can, is also less than ideal. 

Other methods, like behavioral tracking and AI-driven verification of browser patterns, are also problematic, using machine learning to analyze user interactions and identify patterns and anomalies, raising concerns of a surveillance culture.

ZKPs as the privacy-preserving solution

Zero-knowledge proofs present a compelling solution. Like a government ID provider, a trusted entity verifies the user’s age and generates a cryptographic proof confirming they are over the required age.

Websites only need to check the proof, not the excess personal data, ensuring privacy while keeping minors at the gates. No centralized data storage is required, alleviating the burden on platforms such as Google, Meta, and WhatsApp and eliminating the risk of data breaches. 

Recent: How zero-knowledge proofs can make AI fairer

Adopting and enforcing ZKPs at scale

ZKPs aren’t a silver bullet. They can be complex to implement. The notion of “don’t trust, verify,” proven by indisputable mathematics, may cause some regulatory skepticism. Policymakers may hesitate to trust cryptographic proofs over visible ID verification. 

There are occasions when companies may need to disclose personal information to authorities, such as during an investigation into financial crimes or government inquiries. This would challenge ZKPs, whose very intention is for platforms not to hold this data in the first place.

ZKPs also struggle with scalability and performance, being somewhat computationally intensive and tricky to program. Efficient implementation techniques are being explored, and breakthroughs, such as the Noir programming language, are making ZKPs more accessible to developers, driving the adoption of secure, privacy-first solutions. 

A safer, smarter future for age verification

Google’s move to adopt ZKPs for age verification is a promising signal that mainstream platforms are beginning to embrace privacy-preserving technologies. But to fully realize the potential of ZKPs, we need more than isolated solutions locked into proprietary ecosystems. 

Crypto-native wallets can go further. Open-source and permissionless blockchain-based systems offer interoperability, composability, and programmable identity. With a single proof, users can access a range of services across the open web — no need to start from scratch every time, or trust a single provider (Google) with their credentials.

ZKPs flip the script on online identity — proving what matters, without exposing anything else. They protect user privacy, help platforms stay compliant, and block minors from restricted content, all without creating new honeypots of sensitive data.

Google’s adoption of ZKPs shows mainstream momentum is building. But to truly transform digital identity, we must embrace crypto-native, decentralized systems that give users control over what they share and who they are online.

In an era defined by surveillance, ZKPs offer a better path forward — one that’s secure, private, and built for the future.

Opinion by: Andre Omietanski, General Counsel, and Amal Ibraymi, Legal Counsel at Aztec Labs.

This article is for general information purposes and is not intended to be and should not be taken as legal or investment advice. The views, thoughts, and opinions expressed here are the author’s alone and do not necessarily reflect or represent the views and opinions of Cointelegraph.

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US sanctions crypto wallet tied to ransomware, infostealer host

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US sanctions crypto wallet tied to ransomware, infostealer host

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SEC approves conversion of Grayscale’s large-cap crypto fund into ETF

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<div>SEC approves conversion of Grayscale's large-cap crypto fund into ETF</div>

<div>SEC approves conversion of Grayscale's large-cap crypto fund into ETF</div>

Grayscale has slowly narrowed the arbitrage opportunities on its crypto trusts by converting them into exchange-traded funds.

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Chief rabbi condemns BBC’s ‘mishandled response’ to anti-IDF chanting at Glastonbury – as Bob Vylan issue new statement

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Chief rabbi condemns BBC's 'mishandled response' to anti-IDF chanting at Glastonbury - as Bob Vylan issue new statement

The chief rabbi has described the BBC’s response to anti-IDF chanting at Glastonbury as “belated and mishandled” – as the punk-rap duo involved, Bob Vylan, said the UK government needed to talk about its “criminal inaction”.

Sir Ephraim Mirvis said “vile Jew-hatred” had been aired at the Somerset music festival and it was a “time of national shame”.

Confidence in the BBC’s “ability to treat antisemitism seriously” has been brought to a “new low”, he said in a post on X, adding that “outright incitement to violence and hatred” appeared to be acceptable if it was couched as “edgy political commentary”.

Ordinary people had not only failed to see incitement “for what it is” but had cheered it, chanted it, and celebrated it, he said. “Toxic Jew-hatred is a threat to our entire society,” he added.

Bob Vylan, posting a new statement on Instagram on Tuesday, said they were “not for the death of Jews, Arabs or any other race or group of people”.

Rather, they were for the “dismantling of a violent military machine” – the Israel Defence Forces.

Bob Vylan chanted “death to the IDF” at Glastonbury. As many as 95% of the IDF are thought to be Jewish.

In their statement, the group said they were a “distraction from the story” and that whatever “sanctions” they received would also be a distraction.

Their US visas have been revoked and United Talent Agency, their US representatives, have dropped them.

Bob Vylan with their MOBO award in London in November 2022. Pic: Reuters
Image:
Bob Vylan with their MOBO award in London in November 2022. Pic: Reuters

Referring to the war in Gaza, they claimed the UK government does not want them to ask “why they remain silent in the face of this atrocity”, “why they aren’t doing more to stop the killing” and “feed the starving”.

They added: “The more time they talk about Bob Vylan, the less time they spend answering for their criminal inaction.

“We are being targeted for speaking up. We are not the first, we will not be the last, and if you care for the sanctity of human life and freedom of speech, we urge you to speak up, too.”

It has emerged that Tim Davie, the BBC’s director-general, was at Glastonbury when the duo led chants of “Death to the IDF” which were broadcast live.

The prime minister’s spokesman, asked if the PM had confidence in Mr Davie, said Sir Keir Starmer had “confidence in the BBC”, adding: “The position of the director-general is a matter for the BBC’s board.”

Speaking in the Commons, Culture Secretary Lisa Nandy said “accountability” was important and it was something she had “impressed upon the BBC leadership”.

She added: “When you have one editorial failure, it’s something that must be gripped. When you have several, it becomes a problem of leadership.”

The cabinet minister said she’d called Mr Davie after Bob Vylan’s set had been broadcast to find out why it had aired, and why the feed had not been cut.

“I expect answers to these questions without delay,” she said.

Meanwhile Dame Caroline Dinenage, chair of the culture, media and sport committee, has written to Mr Davie in relation to the corporation’s Glastonbury coverage.

The committee has said the letter asks about editorial and decision-making processes and whether consideration was given to broadcasting with a delay. It also asks about staffing levels at the festival and contingency planning.

Secretary of State for Culture, Media, and Sport Lisa Nandy arrives in Downing Street, London, for a Cabinet meeting. Picture date: Tuesday May 13, 2025.
Image:
Lisa Nandy, the culture secretary, has claimed there is a ‘problem of leadership’ at the BBC. File pic: PA

Avon and Somerset Police has begun a criminal investigation and is reviewing footage of both Bob Vylan and Kneecap’s performances at Glastonbury.

The force said a senior detective had been appointed – and it had been contacted by people from around the world.

“We… recognise the strength of public feeling,” it said.

During Kneecap’s set, one member suggested starting a “riot” outside his bandmate’s forthcoming court appearance, before clarifying that he meant “support”. Liam Og O hAnnaidh, also known as Mo Chara, is charged with a terror offence.

Moglai Bap and Mo Chara of Kneecap perform at Glastonbury. Pic: Reuters
Image:
Moglai Bap and Mo Chara of Kneecap performing at Glastonbury. Pic: Reuters

Bob Vylan had been due to tour the US before their visas were revoked.

US deputy secretary of state Christopher Landau said action had been taken “in light of their hateful tirade at Glastonbury, including leading the crowd in death chants”.

“Foreigners who glorify violence and hatred are not welcome visitors to our country,” he added.

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During Bob Vylan’s set, the duo performed in front of a screen that showed several messages, including one that claimed Israel’s actions in Gaza amounted to “genocide”.

The war in Gaza began after Hamas militants attacked Israel on 7 October 2023 and killed 1,200 people and took about 250 hostage.

Israel’s offensive in Gaza has led to the deaths of more than 56,500 people, according to the Hamas-run health ministry, which does not differentiate between civilians and combatants.

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Media watchdog Ofcom has said the BBC “clearly has questions to answer” over the live stream from Glastonbury.

A BBC spokesperson said: “The director-general was informed of the incident after the performance and at that point he was clear it should not feature in any other Glastonbury coverage.”

The broadcaster respects freedom of expression but “stands firmly against incitement to violence”, they said.

They added: “The antisemitic sentiments expressed by Bob Vylan were utterly unacceptable and have no place on our airwaves…

“The team were dealing with a live situation, but with hindsight we should have pulled the stream during the performance. We regret this did not happen.”

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