From privacy coins to shiny iris-scanning orbs, zero-knowledge proofs have become synonymous with crypto, scalability and privacy.
In 2022, investors gave over $700 million in funding to companies pushing the envelope with zero-knowledge proofs. This year, ZK-proofs has arguably become one of the biggest blockchain trends, with several major Ethereum scaling protocols hitting mainnet.
ZK-proofs are a cryptographic protocol that allows one party to prove the truth of a statement to another party without sharing any of the statement’s contents.
An often-cited example is proving to a bartender that you’re old enough to drink without showing your ID or even telling them your birthdate.
In August 2010, the user “Red” on the online forum Bitcointalk asked whether there could be a way to improve the privacy of Bitcoin transactions.
“One of the things that bugs me about bitcoin is that the entire history of transactions is completely public,” the forum-goer said. Another member piped in, suggesting that zero-knowledge proofs could be the solution.
“This is a very interesting topic,” replied Nakamoto.
“If a solution was found, a much better, easier, more convenient implementation of Bitcoin would be possible.”
However, Nakamoto wasn’t convinced the tech could get around the “double-spending” problem — a fundamental flaw that exists in all digital cash protocols where a bad actor could spend the same digital tokens more than once.
“It’s the need to check for the absence of double-spends that requires global knowledge of all transactions,” said Nakamoto.
Satoshi Nakamoto’s response to users suggesting ZK-proofs to raise the privacy of Bitcoin transactions. (Bitcointalk)
“It’s hard to think of how to apply zero-knowledge-proofs in this case. We’re trying to prove the absence of something, which seems to require knowing about all and checking that the something isn’t included,” he argued.
Years later, someone cracks the code
Little did Nakamoto know that the cypherpunks would eventually find a way to solve the problem.
Privacy-focused cryptocurrency Zcash was launched in October 2016 by Electric Coin — a firm made up of computer scientists from the formative years of Bitcoin. Zcash was built by modifying Bitcoin’s original source code.
It was also the first time zero-knowledge proofs were used in a real peer-to-peer cryptocurrency, allowing users to hide or shield the crypto wallet address sending or receiving funds.
The world finally knows that famed whistleblower Edward Snowden was one of the pivotal members of the Zcash Ceremony, where six people combined portions of the project’s private key to launch it in 2016. https://t.co/Lgag6bGA0n
The founding scientist of Zcash, Eli Ben-Sasson, would then go on to found StarkWare, a company known today for using zero-knowledge proofs to scale Ethereum through rollups.
Ben-Sasson tells Magazine that the early enthusiasm from Bitcoin core developers for ZK-proofs played a “pivotal role” in his eventual co-founding of StarkWare.
“The Bitcoin 2013 conference in San Jose marked my Eureka moment.”
“Mike Hearn, a then-Bitcoin developer and one of the earliest Bitcoin adopters, went as far as to declare my talk on ZK-proofs as the most crucial of the event due to its potential impact on the future of blockchain.”
“It was there that I realized the transformative potential of the Validity Proofs I was developing,” says Ben-Sasson.
Fast forward to today, Bitcoin itself now stands ready to enter the world of ZK-proofs.
ZeroSync, a nonprofit founded by three computer scientists (and sponsored by StarkWare), is developing the world’s first ZK light client for Bitcoin.
“Long-term, we hope to bring mass scalability to Bitcoin using STARK Proofs,” said Robin Linus, co-founder of ZeroSync.
Linus said that ZeroSync has designed and is currently implementing a layer-2 protocol that could allow Bitcoin to process more than 100 transactions per second while bringing privacy properties to Bitcoin.
“This could be a major feat in bringing Bitcoin toward the scalability it needs.”
So what would Nakamoto think?
“It’s evident from Satoshi’s past remarks that he strongly favored the use of ZK-proofs for privacy,” says Ben-Sasson.
Nakamoto was a stickler for anonymity. His public interactions on Bitcointalk and his emails were all reportedly done using the IP-masking browser, Tor. It’s the main reason his public IP address could never be traced back to him.
The administrator for Bitcointalk says Nakamoto has always used The Onion Router (Tor) to access the forum. (Bitcointalk)
The Bitcoin creator even dedicated a section to privacy in the Bitcoin white paper, suggesting users keep their public keys anonymous so that, even though the public can see transactions occurring, they don’t know who is involved, like a stock exchange.
Privacy diagram as shown in the Bitcoin white paper. (Bitcoin.org)
“It’s clear that Satoshi would have been intrigued by the privacy innovations my peers and I contributed to at Zcash,” says Ben-Sasson.
Unfortunately, Nakamoto never approached the subject again before he vanished from the public eye on Dec. 12, 2010 — the date of his last post on Bitcointalk.
“While they have recently found their way into Bitcoin through ZeroSync, I believe Satoshi would have been inclined to make the necessary adjustments to integrate them further,” he says.
“After all, for Bitcoin to realize its vision as a global currency, the imperative to scale cannot be ignored, especially considering its current state of ossification.”
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Felix Ng
Felix Ng first began writing about the blockchain industry through the lens of a gambling industry journalist and editor in 2015. He has since moved into covering the blockchain space full-time. He is most interested in innovative blockchain technology aimed at solving real-world challenges.
In one of his first appearances as the recently sworn-in chair of the US Securities and Exchange Commission, Paul Atkins delivered remarks to the agency’s third roundtable discussion of crypto regulation.
In the “Know Your Custodian” roundtable event on April 25, Atkins said he expected “huge benefits” from blockchain technology through efficiency, risk mitigation, transparency, and cutting costs. He reiterated that among his goals at the SEC would be to facilitate “clear regulatory rules of the road” for digital assets, hinting that the agency under former chair Gary Gensler had contributed to market and regulatory uncertainty.
“I look forward to engaging with market participants and working with colleagues in President Trump’s administration and Congress to establish a rational fit-for-purpose framework for crypto assets,” said Atkins.
SEC chair Paul Atkins addressing the April 25 crypto roundtable. Source: SEC
Some critics of US President Donald Trump see Atkins’ nomination to lead the SEC as a nod to the crypto industry, acting on campaign promises to remove Gensler — the former chair resigned the day Trump took office — and cut back on regulation. Democratic lawmakers on the Senate Banking Committee questioned Atkins on his ties to the industry, potentially presenting conflicts of interest in his role regulating crypto.
“We’ve noticed that we don’t have to be as concerned […] about being accused of things that we’re not doing, like being broker-dealers for securities,” Exodus chief legal officer Veronica McGregor, who participated in the roundtable, told Cointelegraph on April 24.”It’s just a less scary regulatory environment in general. It is, however, still unclear what the ultimate regs are going to look like for crypto.”
The SEC crypto task force is scheduled to hold two more roundtables in May and June to discuss tokenization and decentralized finance, respectively. Commissioner Hester Peirce, who leads the task force, told Cointelegraph in March that she welcomed the opportunity to work with Atkins to “reorient the agency,” hinting at an SEC with regulations more favorable to the crypto industry.
In addition to the roundtables, the crypto task force has reported several meetings with digital asset firms to discuss various policies and considerations in developing a regulatory framework.
Nasdaq has urged the US Securities and Exchange Commission (SEC) to hold digital assets to the same regulatory standards as securities if they constitute “stocks by any other name,” according to an April 25 comment letter.
The exchange said the US financial regulator needs to establish a clearer taxonomy for cryptocurrencies, including categorizing a portion of digital assets as “financial securities.” Those tokens, Nasdaq argued, should continue to be regulated “as they are regulated today regardless of tokenized form.”
“Whether it takes the form of a paper share, a digital share, or a token, an instrument’s underlying nature remains the same and it should be traded and regulated in the same ways,” the letter said.
It also proposed categorizing a portion of cryptocurrencies as “digital asset investment contracts,” to be subject to “light touch regulation” but still overseen by the SEC.
Nasdaq’s April 25 letter to the SEC. Source: Nasdaq
The SEC has dramatically pivoted its stance on cryptocurrency oversight since US President Donald Trump took office in January.
Under the leadership of former Chair Gary Gensler, the SEC took the position that practically all cryptocurrencies, with the exception of Bitcoin (BTC), represent investment contracts and therefore qualify as securities.
This stance led the agency to bring upwards of 100 lawsuits against crypto firms for alleged securities law violations.
However, under Trump nominee Paul Atkins, who was sworn in as chair on April 21 after a lengthy Senate confirmation, the SEC has claimed jurisdiction over a narrower segment of cryptocurrencies.
In February, the agency issued guidance stating that memecoins — if clearly identified as purely speculative assets with no intrinsic value — do not qualify as investment contracts pursuant to US law.
In April, the SEC said that stablecoins — digital tokens pegged to the US dollar — similarly do not qualify as securities if they are marketed solely as a means of making payments.
In its April 21 letter, Nasdaq said existing financial infrastructure “can readily absorb digital assets by establishing the proper taxonomy and calibrating certain rules to reflect what is truly new and novel about digital assets.”
The Depository Trust & Clearing Corporation (DTCC) — a private US securities clearinghouse closely overseen by the SEC — has been laying the foundation for integrating blockchain technology into regulated financial markets.
Cryptocurrency firms and centralized exchanges are launching more traditional investment offerings, bridging the divide between traditional financial and digital assets.
With investors seeking more flexible product offerings under one platform, the “line is blurring” between traditional finance (TradFi) and the cryptocurrency space, as the two financial paradigms signal a “growing synergy,” according to Gracy Chen, CEO of Bitget, the world’s sixth-largest crypto exchange.
In the wider crypto space, Securitize partnered with Mantle protocol to launch an institutional fund that will generate yield on a basket of diverse cryptocurrencies, similar to how traditional index funds track a mix of stocks.
The developments come after crypto investor sentiment staged a significant recovery, moving from “fear” to “neutral” for the first time since January 2025.
Investor sentiment was bolstered after US President Donald Trump said that import tariffs on Chinese goods will “come down substantially,” adopting a softer tone in negotiations for the first time since the reciprocal tariff announcement.
Crypto firms moving into Wall Street territory
Cryptocurrency firms and exchanges are increasingly moving into Wall Street territory, launching more traditional investment offerings and showcasing the increasing connection between crypto and traditional finance (TradFi).
“There’s a growing synergy between traditional financial investments and the emerging crypto space,” according to Gracy Chen, the CEO of Bitget, the world’s sixth-largest crypto exchange.
“Crypto players are now checking out traditional finance as they see the opportunity to bridge it,” Chen told Cointelegraph.
“The lines are blurring. Investors want flexibility, and products that can straddle both worlds are naturally attractive,” Chen said. “Some players see TradFi as a safety net; others, like Bitget, see it as a launchpad for broader adoption.” She added:
“In a volatile market, integration is smarter than isolation.”
Securitize, Mantle launch institutional crypto fund
Tokenization platform Securitize partnered with decentralized finance (DeFi) protocol Mantle to launch an institutional fund designed to earn yield on a diverse basket of cryptocurrencies, the companies said.
Similar to how a traditional index fund tracks a mix of stocks, the Mantle Index Four (MI4) Fund aims to offer investors exposure to cryptocurrencies, including Bitcoin (BTC), Ether (ETH), and Solana (SOL), as well as stablecoins tracking the US dollar, Securitize said in an April 24 announcement.
The fund also integrates liquid staking tokens — including Mantle’s mETH, Bybit’s bbSOL, and Ethena’s USDe — in a bid to enhance returns with onchain yield, according to the announcement.
Mantra says CEO has begun the process of burning his 150 million OM tokens
Mantra founder and CEO John Patrick Mullin has started unstaking 150 million of his Mantra (OM) tokens in preparation for sending them to a burn address in an attempt to restore the token’s value by tightening supply.
Mantra announced on April 21 that the unstaking process had begun, and would be completed by April 29, at which point Mullin’s Mantra (OM) tokens will be sent to the burn address and permanently removed from circulating supply.
Mullin said it was a “first step in rebuilding trust with the community, but far from the last.”
Mantra said it was also in talks with “key ecosystem partners” about burning a further 150 million OM to bring the total burn amount to 300 million.
With 150 million fewer OM, Mantra’s total supply will decline to 1.67 billion, and its number of staked tokens will drop by over 26% to 421.8 million OM from 571.8 million OM.
Symbiotic raises $29 million for staking-based universal coordination layer
Cryptocurrency staking protocol Symbiotic closed a $29 million Series A funding round led by Web3-focused investment firms, including Pantera Capital and Coinbase Ventures, to support the launch of a new economic coordination layer for blockchain security.
The round included more than 100 angel investors, with participation by major industry players Aave, Polygon and StarkWare, the company said in an April 23 announcement shared with Cointelegraph.
The closing of the funding round also marks the launch of Symbiotic’s Universal Staking Framework, which aims to be an economic coordination layer that bolsters blockchain security via staking.
The new staking layer enables the use of any combination of cryptocurrencies to secure networks, including monolithic and modularlayer-1 and layer-2 blockchains, the announcement said.
“We’ve created a modular framework that lets protocols evolve security models over time while efficiently coordinating risk,” Misha Putiatin, co-founder of Symbiotic, told Cointelegraph. “This empowers protocols at every stage of their lifecycle to evolve their security models seamlessly without rebuilding infrastructure.”
The US Securities and Exchange Commission (SEC) delayed a decision on whether to approve a proposed exchange-traded fund (ETF) holding Polkadot’s native token, regulatory filings show.
According to an April 24 filing, the regulator has extended its deadline for a final ruling until June 11, nearly four months after the Nasdaq sought permission to list Grayscale Polkadot Trust on Feb. 24.
Grayscale’s ETF filing adds to a roster of about 70 proposed ETFs awaiting SEC approval, including funds holding altcoins, memecoins and crypto-related financial derivatives, according to Bloomberg Intelligence.
Asset managers are pitching ETFs for “[e]verything from XRP, Litecoin and Solana to Penguins, Doge and 2x Melania and everything in between,” Bloomberg analyst Eric Balchunas said in an April 21 post on the X platform. Asset manager 21Shares is also awaiting permission to list its own Polkadot ETF.
According to data from Cointelegraph Markets Pro and TradingView, most of the 100 largest cryptocurrencies by market capitalization ended the week in the green.
The Official Trump (TRUMP) token rose over 73% as the week’s biggest gainer, after the president announced an exclusive in-person dinner for the top tokenholders. The Sui (SUI) token rose over 69% as the week’s second-best performing token.
Total value locked in DeFi. Source: DefiLlama
Thanks for reading our summary of this week’s most impactful DeFi developments. Join us next Friday for more stories, insights and education regarding this dynamically advancing space.