Arkham Announces 'De-anonymization' of ZCash. Which Transactions Are Being Tracked

RBK-cryptoPublished on 2025-12-09Last updated on 2025-12-09

Abstract

Analytics platform Arkham Intelligence has announced it has begun "de-anonymizing" transactions of the privacy-focused cryptocurrency Zcash (ZEC). Arkham claims to have labeled over half (53%) of all ZEC transactions, including both private (shielded) and public ones, and has linked $420 billion worth of ZEC to specific individuals and entities. Its monitoring tools provide alerts for large transactions and use AI for analysis. As an example, Arkham highlighted that the U.S. government holds $1.26 million in ZEC, confiscated from AlphaBay founder Alexander Cazes eight years ago. Zcash creator Zooko Wilcox responded by stating the announcement is not true de-anonymization, as ZEC users themselves choose whether to make their transactions visible on such a dashboard. The news comes amid a significant price surge for ZEC, which has increased nearly tenfold since the start of the year. Wilcox admitted he does not know the reason for the price increase but dismissed theories of a "coordinated pump" as cynical propaganda. Zcash supporters argue that Arkham's labeling is primarily based on data from the public portion of the network, though Arkham asserts it used methods to correlate some activity from the private pool as well.

Analytics platform Arkham has announced that it has started 'de-anonymizing' transactions in the Zcash cryptocurrency. This coin is known for allowing users to choose between private or public transaction processing.

Arkham claims to have labeled more than half (53%) of the transactions in the Zcash network, both shielded and open. Analysts have linked $420 billion in ZEC to specific individuals and organizations. Arkham's features for monitoring Zcash activity include the ability to receive notifications about large transactions, as well as analyze operations using artificial intelligence.

As an example of Zcash monitoring, Arkham pointed out that eight years ago, the US government confiscated $737,000 in ZEC from AlphaBay founder Alexander Cazes, which has appreciated in value over the years. The US government's balance now holds $1.26 million in ZEC.

Zcash creator Zooko Wilcox stated that this is not de-anonymization in the full sense, as ZEC users themselves decide whether their operations will be visible.

"The Arkham headline makes it sound like they can 'de-anonymize' Zcash owners. But in reality, when you use Zcash, you choose for yourself whether one of your wallets will be displayed on their dashboard or not," Wilcox wrote.

This fall, after almost five years of dormancy, the price of ZEC has increased nearly tenfold since the beginning of the year. Such a sharp spike has caused a lively reaction in the crypto community, dividing it into two camps: some believe the growth is a natural revaluation of the project's fundamental characteristics, while others see it as the result of a large-scale and coordinated promotional campaign.

At the end of October, Wilcox admitted that he did not know why ZEC was rising so much in price or if it would fall back. "But here's what I do know: the talk about this being a 'coordinated pump' is just more propaganda from people who can't believe in something good and genuine," the ZEC founder wrote.

Zcash supporters on social media also claim that the main part of Arkham's labeling is based on data from the open part of the network. The company itself assures that it used methods to correlate some activity from the private pool as well.

As of 12:40 Moscow time, Zcash is trading around $410. Over the past 24 hours, the coin has appreciated by 4.5%, and over the year by 543%.

Tether has invested in humanoid robots. When will they be launched

Binance suspends employee for insider trading. What happened

Strategy purchased the largest batch of bitcoins since July

Related Reads

Those Pre-Bitcoin PoW Protocols Have Recently Been Reimplemented

This article details a recent surge in replicating pre-Bitcoin Proof-of-Work (PoW) protocols, specifically focusing on Hal Finney's 2004 RPOW (Reusable Proofs of Work). Within five days in May 2026, multiple independent builders in the Bitcoin/cypherpunk community launched projects inspired by this early electronic cash proposal. The initiative began with Fred Krueger's `rpow2.com`, a centralized but auditable system that replaced RPOW's original IBM 4758 hardware with Ed25519 signatures. Initially a faithful replica, it later adopted Bitcoin-like features (21M supply cap, difficulty adjustment) and a controversial 5.24% founder allocation. This sparked rapid forks, including `rpow4.com` which incorporated full Bitcoin parameters, a prediction market (`rpowmarket.com`), and a DEX (`rpow2swap.com`). Concurrently, Mike In Space created a prototype of Wei Dai's 1998 b-money proposal (`b-money.replit.app`), pushing the historical exploration even further back. The article contrasts these centralized, server-dependent experiments with Bitcoin's core innovation of decentralized, trustless consensus. It also highlights a parallel development: the `HASH` project on Ethereum, which uses smart contract hooks to enable a purely fair-launch, browser-mineable PoW token with 0% allocations to team or VCs. The collective activity is framed as a meme-driven, educational exploration of cypherpunk history rather than a serious financial movement, with all projects heavily disclaiming any investment value.

marsbit5m ago

Those Pre-Bitcoin PoW Protocols Have Recently Been Reimplemented

marsbit5m ago

South Korean Exchanges 'Battle' Regulators, Challenging the Boundaries of Enforcement and Legislation

South Korea's cryptocurrency industry is engaged in a rare, direct confrontation with regulators. The Financial Intelligence Unit (FIU), the primary anti-money laundering (AML) watchdog, has recently imposed heavy penalties on major exchanges like Upbit and Bithumb for alleged violations involving unregistered overseas VASPs and AML procedures. However, exchanges are now actively challenging these actions in court and through industry associations. In a significant shift, the Seoul Administrative Court ruled in favor of Upbit's operator, Dunamu, overturning part of an FIU-ordered business suspension. The court found the FIU's penalty criteria and justification insufficiently clear. Similarly, the court suspended the enforcement of a six-month business suspension against Bithumb pending a final ruling, citing potential irreversible harm to the exchange. Beyond legal battles, the industry is contesting proposed legislative amendments. The Digital Asset eXchange Alliance (DAXA) strongly opposes a draft rule that would mandate Suspicious Transaction Reports (STRs) for all crypto transfers over 10 million KRW (~$6,800). DAXA argues this "poison pill" clause violates legal principles and would overwhelm the STR system, increasing reports from 63,000 to an estimated 5.45 million annually for major exchanges, thereby crippling effective AML monitoring. This conflict highlights a structural tension in South Korea's crypto governance: comprehensive digital asset laws are still developing, while regulators rely heavily on AML enforcement. The industry's move from passive compliance to active legal and legislative challenges signifies a new phase, pressing for clearer rules and more proportionate enforcement. While short-term disputes may intensify, this clash could ultimately lead to a more mature and sustainable regulatory framework for South Korea's vibrant crypto market.

marsbit58m ago

South Korean Exchanges 'Battle' Regulators, Challenging the Boundaries of Enforcement and Legislation

marsbit58m ago

After 50x Storage Surge, Justin Sun Always Looks to the Next Decade

Sun Yuchen, known for his controversial stunts like a $30 million lunch with Warren Buffett (canceled due to a kidney stone) and eating a $6.2 million duct-taped banana, is often overshadowed by a significant fact: his decade-long track record of spotting major investment trends. In 2016, he famously advised young people to invest in Bitcoin, Nvidia, Tesla, and Tencent instead of buying property. A hypothetical $20,000 investment in Nvidia and Tesla from that list would now be worth over 50 million RMB. His latest major call was on November 6, 2025, predicting a "50x storage opportunity" tied to the AI boom, which materialized with Sandisk's stock surging nearly 50-fold by 2026. Looking ahead, Sun now focuses on the next frontier: Physical AI. He identifies four key areas: 1. **Embodied AI/Robotics**: He sees this reaching its "iPhone moment," with companies like UBTech and Galaxy General leading in commercialization. 2. **Drones**: Viewed as the first commercially viable form of Physical AI, revolutionizing sectors from warfare (e.g., AeroVironment's Switchblade) to logistics. 3. **Spatial Computing**: Beyond VR, it's about AI understanding physical space, a foundational technology for robotics and autonomous systems, exemplified by Apple's Vision Pro. 4. **Space Exploration**: After a 2025 suborbital flight with Blue Origin, Sun advocates for space as the ultimate frontier, discussing blockchain's potential role in space asset management and data transactions. His investment philosophy involves betting on entire, inevitable trends rather than single companies. For robotics, he sees Tesla (the body/manufacturer) and Nvidia (the brain/AI platform) as complementary plays. In defense drones, he highlights companies making tanks obsolete (AeroVironment) and those augmenting fighter jets (Kratos). For space, he participated in Blue Origin's flight and anticipates SpaceX's potential IPO to redefine the sector's valuation. Sun Yuchen's vision frames the next two decades not as a revolution in information flow (like the internet), but in the fundamental operation of the physical world through AI-powered robots, autonomous systems, and spatial intelligence, ultimately extending human and AI activity into space. While many still focus on conventional assets, he continues to look toward the next technological horizon.

marsbit1h ago

After 50x Storage Surge, Justin Sun Always Looks to the Next Decade

marsbit1h ago

The Billionaires Behind the Most Expensive Midterm Election in History

"The Most Expensive Midterm Elections and Their Billionaire Backers" This analysis details the unprecedented scale of spending in the 2026 midterm elections, highlighting the key billionaire donors shaping the political landscape. Jeff Yass, founder of Susquehanna International Group, has contributed over $81 million, ranking third among individual donors behind George Soros ($102.6M) and Elon Musk ($84.8M). Yass is a major donor to Trump's MAGA Inc. and supports school choice and various candidates. Overall, federal committees have raised over $4.7 billion this cycle, with political ad spending projected to reach $10.8 billion. Republican-aligned groups are significantly out-raising their Democratic counterparts. "Dark money" from undisclosed sources continues to grow. The core stakes involve control of Congress and policy direction for Trump's final term. Donors are also motivated by specific issues: Sergey Brin and Chris Larsen are funding opposition to a proposed California wealth tax and supporting crypto-friendly policies. Other top donors include OpenAI's Greg Brockman and his wife Anna ($50M total to MAGA Inc. and an AI-focused PAC), Richard Uihlein ($45.3M to conservative causes), venture capitalists Marc Andreessen and Ben Horowitz (each over $44M to crypto/AI PACs and MAGA Inc.), Miriam Adelson ($42.6M to GOP leadership PACs), Paul Singer ($33.9M), and Diane Hendricks ($25.8M to MAGA Inc.). The article notes that the peak fundraising period is still ahead, with major primaries approaching.

marsbit1h ago

The Billionaires Behind the Most Expensive Midterm Election in History

marsbit1h ago

Trading

Spot
Futures
活动图片