XMR FCMP++ Upgrade Completed and Launched on ANUBIS: Can Privacy Coins Break Through?

In April 2026, the privacy-coin sector welcomed two landmark developments at the same time: Monero (XMR) completed the most important cryptographic upgrade in its history—FCMP++ full-chain membership proofs were officially deployed; meanwhile, a privacy-focused financial public blockchain called ANUBIS Chain announced the launch of its mainnet. These two events sit at opposite ends of the privacy technology spectrum: on one side, Monero continues to further harden itself for extreme anonymity; on the other, ANUBIS attempts to find a third path between privacy protection and regulatory compliance. Within the same time window, the two together outline a deeper question facing the privacy-coin track in 2026: amid tightening global regulation, where should privacy technology go?

Milestones for Two Privacy Infrastructures

Monero officially completed the deployment of the FCMP++ upgrade in April 2026. FCMP++ stands for “Full-Chain Membership Proofs,” a protocol-level upgrade designed to replace Monero’s existing ring signature model. In the current architecture, Monero uses a set of 16 decoy outputs to obfuscate the real input for each transaction input; with FCMP++ deployed, this anonymity set expands from 16 to more than 100 million outputs across the entire blockchain, making it statistically almost infeasible for senders to be tracked.

This upgrade was not something that happened overnight. The development team began pushing FCMP++ R&D and testing in 2024; on October 3, 2025, at block height 2,847,330, they launched an Alpha stress test network for public testing, and released version v0.19.0.0-alpha.1.5 in January 2026, focusing on optimizing memory usage, multi-thread synchronization, and node synchronization performance. In March 2026, core developer jeffro256 published the first-quarter development plan proposal, clearly listing the launch of the FCMP++ Beta stress test network and integrated audits as priority tasks. By early April, the upgrade was officially completed and deployed.

Around the same time, ANUBIS Chain’s mainnet was officially launched at 8:00 PM U.S. Eastern time on April 7 (8:00 AM Singapore time on April 8). ANUBIS is a privacy-focused financial public blockchain built on the EVM architecture, and its core technical roadmap combines a “selective privacy” model with a ZK-KYC compliance framework. Unlike Monero’s fully anonymous design, ANUBIS allows users to choose between private status and public status on their own, and enables selective disclosure through view keys. After the mainnet goes live, the project will enter a phase of network operations and ecosystem expansion, targeting use cases including RWA tokenization and institutional-grade payments.

Although the two events occur within the same day window, they represent two different directions for the evolution of privacy infrastructure. Monero’s FCMP++ upgrade further deepens the technology moat in the incumbent track; ANUBIS’s mainnet launch is an active exploration of compliance pathways in the incremental track. There is no direct competitive relationship between the two, yet they share the same set of external variables: the continued tightening of the regulatory environment for privacy coins worldwide in 2026.

From an industry value perspective, these two events share several common characteristics: structural impact on the industry (an intergenerational shift in the privacy technology stack), changes in the scale of capital and power dynamics (regulation-driven reshaping of market access), market controversy and divergence (a battle over the route between anonymity and compliance), and ongoing discussion potential (the direction of privacy technology evolution is far from settled).

Technical Innovation: A Paradigm Shift from Ring Signatures to Full-Chain Proofs

FCMP++’s technical architecture is built on full-chain membership proofs. Its core logic is: the proof for an output spent in a transaction can be any output on the blockchain, not only proofs confined to a limited decoy group. This mechanism achieves efficient O(log N)-level verification through generalized elliptic-curve proofs, while controlling verification computational overhead without requiring trust.

In terms of deployment, FCMP++ integrates directly with Monero’s existing RingCT framework, avoiding a comprehensive protocol overhaul like Seraphis. This design lowers the engineering complexity of the upgrade and also reduces the risk of network splits. The anonymity set increases from 16 to more than 100 million after the upgrade—one of the largest anonymity-set expansion jumps from a single upgrade in the history of cryptographic privacy technology.

ANUBIS Chain’s technical architecture takes a different path. Its core innovation lies in a hybrid state model—separating and synchronizing private and public states into two cooperating layers. The private state layer is dominated by the UTXO model and handles privacy transactions and asset management; the public state layer is dominated by the account model, fully adapting to the EVM to support Solidity smart contracts and ecosystem integration. A state-root synchronization mechanism and precompiled contracts ensure consistency and compatibility between the two states.

The key significance of this architecture is that developers can seamlessly integrate privacy capabilities in an EVM-compatible environment without changing toolchains or learning new languages; users, meanwhile, can independently choose the privacy level of transactions within the same network, and establish boundaries between compliant audits and privacy protection through view keys.

The divergence between the two technical routes is fundamentally philosophical. Monero pursues “default privacy,” meaning the protocol enforces anonymity protection for all transactions; ANUBIS provides “selective privacy,” returning decision power over privacy levels to users and the application layer. The former’s advantage is the unseverable nature of privacy guarantees; the latter’s advantage is the space for compatibility with existing financial regulatory frameworks.

It’s worth noting that FCMP++’s technical design also includes forward-looking security measures. By using forward secrecy mechanisms and stronger cryptographic assumptions, FCMP++ can, in theory, protect past transaction records from future threats posed by quantum computing attacks. Although this design does not directly change the user experience in the short term, it creates an important security depth in long-term technical evolution.

Market and Regulation: Price Volatility and Liquidity Restructuring Amid Clashing Narratives

Since 2026, the market performance of privacy coins has shown highly volatile characteristics. According to Gate market data, XMR hit an all-time high of about $797.73 in January 2026, significantly breaking above the prior all-time high; however, after that, the market saw a major correction, with prices in early April fluctuating in the roughly $330 to $350 range.

This price trend closely synchronized with regulatory events. In January 2026, the Dubai Financial Services Authority implemented a comprehensive ban on privacy coins in the Dubai International Financial Centre; afterward, India’s financial intelligence agencies also introduced restrictive measures targeting privacy coins. More critically, in February 2026, multiple mainstream centralized exchanges around the world delisted XMR and other privacy coins in response to increasingly stringent AML and KYC compliance requirements.

The delisting has structural implications for the privacy-coin market structure. Privacy coins originally relied on centralized exchanges’ deep liquidity pools to maintain market efficiency; the delisting cut off this key channel, forcing trading activity to migrate toward decentralized exchanges or smaller platforms with looser regulation. This migration leads to liquidity fragmentation and may increase price volatility.

Meanwhile, ANUBIS chose to embed the ZK-KYC compliance framework at the mainnet launch stage—an upfront strategy. By predefining compliance interfaces at the protocol level, ANUBIS aims to avoid the “passive compliance dilemma” faced by traditional privacy coins such as Monero—namely that the technical architecture itself does not support selective disclosure, and thus lacks flexible response space under regulatory pressure.

The FCMP++ upgrade has a dual impact on Monero’s long-term market positioning. On the one hand, the large expansion of the anonymity set significantly strengthens its moat as a privacy asset and solidifies its indispensability in the “extreme anonymity” niche. On the other hand, stronger privacy could further intensify regulatory institutions’ concerns about compliance risk, thereby exacerbating already severe exchange access pressure.

The tension between this technical upgrade and market access forms one of the most important structural contradictions to watch in the privacy-coin track in 2026.

Industry Impact: The Reshaping of Privacy Technology Narratives and the Splintering of Infrastructure

The FCMP++ upgrade is not only an protocol iteration for Monero itself, but also a technical benchmark shift for the entire privacy-coin track. Before this upgrade, the mainstream narrative in privacy technology centered on engineering applications of zero-knowledge proofs; FCMP++ demonstrated the feasibility of another technical path—achieving anonymity guarantees equivalent to or even stronger than those offered by zk-SNARKs, through full-chain membership proofs without relying on zk-SNARKs.

ANUBIS’s mainnet launch, meanwhile, represents an attempt to deeply integrate privacy technology with mainstream public-chain ecosystems. Because ANUBIS is built on the EVM architecture, any developer in the Ethereum ecosystem can migrate the application to this network with relatively low learning costs and selectively enable privacy features. This compatibility design lowers the adoption barrier for privacy technology.

From the perspective of industry infrastructure, in 2026 the privacy-coin track is undergoing clear divergence:

First, divergence in technical routes. “Native privacy chains” represented by Monero continue to focus on the extreme optimization of cryptographic technology; “compatible privacy chains” represented by ANUBIS focus more on blending privacy functions with existing public-chain ecosystems.

Second, divergence in compliance strategies. Traditional privacy coins tend to follow a path of “technological confrontation with regulation,” emphasizing the uncompromising nature of privacy; emerging privacy chains attempt “technological adaptation to regulation,” seeking entry into the mainstream market by leveraging selective disclosure and compliance interfaces.

Third, divergence in application scenarios. Extreme anonymity fits better for individual users with rigid privacy needs and certain specific scenarios; selective privacy aligns more with institutional-level financial applications such as RWA tokenization and compliant payments.

Monero’s core developers’ first-quarter 2026 development plan also includes several supporting tasks, such as reaching out to existing hardware wallet manufacturers to provide security support guidance for Carrot/FCMP++, and collecting assistance for implementing Carrot multi-signature. This indicates that the ecosystem building around FCMP++ is still actively progressing, not something finished once and for all after a single upgrade.

What deserves attention is that privacy technology is evolving from a “niche track” into a more broadly applicable “functional module” for blockchain infrastructure. Whether it’s the widespread application of zero-knowledge proofs in Ethereum L2 solutions or the design approach of embedding privacy capabilities into an L1 public chain like ANUBIS, they point to a trend: privacy functionality is shifting from being the core selling point of independent tokens to becoming a standardized capability of general public chains. This trend is both a challenge and an opportunity for projects focused on privacy tracks like Monero—challenge because differentiation advantages may be diluted, opportunity because the overall market scale of privacy demand may expand through more extensive user education.

Risk Review: Technical Uncertainty, Liquidity Dilemmas, and Compliance Costs

Even after the FCMP++ upgrade, several technical uncertainties remain. According to the Monero development team’s public statements, the stress test network currently still does not support features such as hardware wallets, multi-signature, view-only wallets, transaction proofs, and block explorers. The absence of these functions means that for some users, the full usage experience may not be available for a period after the upgrade. In addition, the data size per transaction for FCMP++ is about 4 KB, larger than the transaction size under the original ring signature scheme, which may create extra pressure on storage and bandwidth resources if network transaction volume increases significantly.

On the ANUBIS side, the mainnet has only just launched, and the ecosystem buildout is essentially starting from zero. While its EVM compatibility lowers the technical barrier for developer migration, the real deployment and validation of core application scenarios such as privacy DeFi and privacy payments still require time.

More broadly, risks also exist at the regulatory level. The stronger anonymity brought by the FCMP++ upgrade may cause Monero, from a regulator’s perspective, to shift from a “high compliance-risk asset” to an “asset that cannot be made compliant,” further compressing its survival space on centralized exchanges. If more jurisdictions emulate the regulatory models of Dubai and India, XMR’s liquidity dilemma could evolve into a long-term structural problem.

ANUBIS’s compliance route also faces the need for validation. The ZK-KYC framework must prove in practice that it meets regulators’ requirements for traceability without damaging users’ expectations of privacy. There is naturally tension between these two goals; how to achieve a balance in concrete implementation will be a key variable determining whether ANUBIS can gain institutional-level adoption.

Multi-Scenario Evolution Forecast: Three Possible Paths for the Privacy-Coin Track

Based on the facts and viewpoints above, the following forecasts outline three possible industry evolution scenarios.

Scenario One: Technical Leadership Drives a Rebound in Demand

In this scenario, the completion of the FCMP++ upgrade deepens Monero’s privacy technology moat further, attracting a continuous inflow of user groups with rigid privacy needs. At the same time, emerging privacy chains such as ANUBIS gradually build application ecosystems at the institutional level; some centralized exchanges re-evaluate their compliance frameworks for privacy coins and restore trading pairs under specified regulatory conditions. In this scenario, the privacy-coin track would likely show a layered pattern: established projects strengthening their technical barriers while emerging projects expand the boundaries of their applications, with the overall market size growing moderately.

Scenario Two: Regulation Continues to Tighten, and Liquidity Layering Intensifies

In this scenario, more jurisdictions introduce restrictive policies targeting privacy coins, and mainstream centralized exchanges further clean up privacy-coin trading pairs. Trading activity for traditional privacy coins such as Monero is compressed into decentralized exchanges and peer-to-peer networks, forming a “parallel liquidity layer” isolated from the mainstream market. Although ANUBIS’s compliance framework preserves access rights for centralized exchanges, the “selective” nature of its privacy capabilities may weaken its appeal to those pursuing pure privacy. In this scenario, the privacy-coin track would form a distinct split between compliant chains and anonymous chains, and overall market efficiency would decline.

Scenario Three: Privacy as Modular Functionality, and the Track Boundaries Blur

In this scenario, privacy technology no longer exists in the form of an independent public chain or token, but instead as modular functionality integrated into mainstream L1 and L2 networks. ANUBIS’s selective privacy model becomes a direction that more public chains borrow from, and Monero’s technical approach could also be introduced into other ecosystems in the form of sidechains or plugins. The narrative of privacy coins as an independent asset class becomes diluted, but the overall penetration rate of privacy technology rises significantly. In this scenario, the very definition of the track would undergo fundamental change.

Conclusion

With XMR completing the FCMP++ upgrade and ANUBIS Chain launching its mainnet, the shared theme of these two events is this: amid the game between regulation and technology, privacy infrastructure is undergoing a profound split and reshaping. Monero pushes anonymity to a new technical height with full-chain membership proofs, while ANUBIS explores another possibility through selective privacy and a compliance framework.

Which path is better remains unknown, and there’s no need to decide too early. What truly matters is that privacy, as a foundational attribute of digital assets, is now being supplied in richer forms. Against the backdrop of ongoing evolution in the global regulatory environment in 2026, the next stage of competition in the privacy track will be not only a contest of technical capabilities, but also a comprehensive test of how deeply the market understands demand and how well it adapts to compliance. No matter which model ultimately gains broader adoption, the overall progress of privacy technology will provide indispensable underlying support for the long-term healthy development of the crypto industry.