Ethereum co-founder Vitalik Buterin believes that one-per-person digital ID systems, despite using zero-knowledge proofs (ZK proofs), carry risks to privacy. ZK proof wrapped IDs offered by World ID (formerly Worldcoin) using biometric data and ZK proofs have been gaining traction, recently crossing 10 million users.

Therefore, in his blog on Saturday, Buterin suggested ‘pluralistic identity’ as the “best realistic solution” to fully preserve privacy.

ZK proof wrapped IDs use ZK proofs to establish that a user has a valid ID without revealing any details of their ID, thus promising privacy. However, Buterin argued that ZK proof wrapped digital IDs still have loopholes that could compromise privacy.

ZK wrapped IDs solve ‘a lot of important problems’

Buterin concedes that “ZK-wrapping solves a lot of important problems.” Apart from ZKIDs, all options to authenticate a user’s identity on any application require the user to reveal their entire legal ID. According to Buterin:

“This is a gross violation of the common computer-security principle of least privilege: a process should only get the least authority and information required to accomplish its task.”

For instance, if an app requires a user to prove their age, the application should not be able to access any other data in the legal ID. Therefore, ZKIDs provide a crucial and previously unavailable avenue to preserving privacy, Buterin said.

Risks associated with ZK proof wrapped IDs

The designs of current ZK-identity platforms come with constraints—they allow users to create only one ID for each application. Firstly, the one-per-person ID limit means that ZK IDs do not guarantee pseudonymity, Buterin said. He explained:

“In the real world, pseudonymity generally requires having multiple accounts: one for your “regular identity” and others for any pseudonymous identities.”

Teenagers and many others already practice having multiple accounts, calling them fake and real Instagram accounts. Buterin wrote:

“…under one-per-person ID, even if ZK-wrapped, we risk coming closer to a world where all of your activity must de facto be under a single public identity.”

The single ID constraint for each application means that the “practical level of pseudonimity” offered by ZK wrapped IDs is lower. This is because, currently, services like Google accounts allow users to create up to five accounts.

Secondly, users can be coerced by governments or companies to reveal their identities on one or more applications, thus nullifying privacy preservation. For instance, an employer can ask a potential recruit to reveal their full ID on one or more social media platforms as a condition of employment.

Therefore, Buterin said that ZK does not “eliminate the possibility” that a person’s identity could be revealed under coercion.

Lastly, ZK proof wrapped IDs also come with non-privacy risks like errors.

In extraordinary or edge cases, all forms of IDs often fall short. For instance, biometric IDs may not work for users whose features have been damaged or warped by injury. Biometric IDs could also be potentially spoofed by replicas. Additionally, government IDs do not include stateless persons or those who have yet to acquire such documents. Therefore, Buterin wrote:

“These edge cases are most harmful in the case of systems that try to maintain a one-per-person property, and they have nothing to do with privacy; hence, ZK does not help.”

Pluralistic identities are the solution, Buterin said

Buterin defined pluralistic identity as “an identity regime where this is no single dominant issuing authority, whether that’s a person, or an institution, or a platform.” According to Buterin, pluralistic IDs can be explicit or implicit.

In explicit pluralistic identity or ‘social-graph-based identity,’ a user has to prove a certain feature, like their age, or that they’re human, through attestations from others in the community, who are also each verified through the same process. Explicit pluralistic ID systems can allow users to have one or more pseudonyms, with each pseudonym having its own online presence and history, Buterin claimed.

On the other hand, in an implicit pluralistic identity system, a user can provide any ID—government IDs or social media IDs—for verification. According to Buterin, implicit pluralistic identity systems reduce the possibility of a user being coerced to reveal their entire identity.

Furthermore, pluralistic ID systems are “naturally more error tolerant,” allowing people who are generally excluded, like those without the right documents, to prove their identities.

Buterin warned, however, that these benefits disappear and the system effectively turns into a one-per-person ID system when “any one form of ID gets close to 100% market share, and it becomes realistic to demand it as a sole login option.”

Mentioned in this article

• Fartcoin price has surged over 216% in the past 30 days, becoming the most traded token on decentralized exchanges.
• Despite not being listed on major centralized platforms, Fartcoin has attracted significant trading interest and “smart money” activity.
• Technical indicators like RSI show short-term strength, but market watchers remain cautious due to meme coin volatility.
• The token is still far below its all-time high of $2.48, and while some traders target $1, others expect pullbacks before any further rally.

While most of the crypto market — and the world — has been dragging along the bottom, weighed down by Donald Trump’s tariff plans, some meme coins have been defying gravity. Fartcoin (FARTCOIN) has soared more than 200% over the past 30 days.

According to CoinGecko, the token jumped nearly 216% in that period. It started March trading at around $0.25, climbed steadily, and reached $0.62 by March 24.

As of April 10, the price pushed past $0.75, sparking fresh optimism among traders. Could $1 be next? Hard to say — especially in such a shaky market and with meme coins being as unpredictable as ever.

Fartcoin’s most recent all-time high (ATH) came back on Jan. 19, when it briefly hit $2.48. That’s roughly 70% above its current price.

Still, activity around the token has clearly picked up. Data from GeckoTerminal shows that over the past seven days, Fartcoin’s trading volume on decentralized exchanges (DEXs) surged to $118 million, making it the most traded asset on DEXs during that stretch.

And it’s not just retail traders getting involved. According to Stalkchain data from March 27, Fartcoin has become the most popular meme coin among wallets flagged as “smart money,” with around $80,000 in daily activity.

Is $1 a Realistic Target for Fartcoin Price?

According to CoinGlass, Fartcoin price is currently showing strength on the weekly Relative Strength Index (RSI), standing out as one of the more resilient assets in the past seven days.

Some traders are starting to draw comparisons. A user known as Unipcs posted on X that Fartcoin’s price movement reminded them of Pepe (PEPE) in 2024 — one of the year’s top-performing meme coins. They noted that despite not being listed on major centralized exchanges, Fartcoin is still pulling in significant trading volume.

Another trader described Fartcoin price as entering an “upward phase,” with the recent 40% daily growth on April 9–10 possibly backing that up.

Meanwhile, a third trader believes the coin is still “in the green zone.” They speculate that its market cap could grow to $1.3 billion — up from $723 million as of April 10. Still, they warned that dips are likely before any sustained rally.

Some community members are even more bullish, calling for a long-term target of $10. But as always with meme coins, caution is warranted. Their price action is notoriously volatile and often disconnected from fundamentals. Just recently, traders were asking whether the “meme coin mania” was over. A Cryptonews investigation also showed that more than half of Trump-themed meme coins have lost 90% or more from their all-time highs.

Unlike most assets, Fartcoin hasn’t surged on the back of any major news. The token was launched in October 2024 during the AI hype cycle, and it’s often labeled as part of the “AI meme coin” trend.

For now, Fartcoin is not only one of the few meme coins showing signs of life after a brutal crypto winter. It’s also one of the rare Solana-based tokens launched via Pump.fun to bounce back after the chaos surrounding Libra token (LIBRA) and other recent scams.

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