Beyond Web3: When AI meets distributed ledger technology

Blockchain has so far failed to deliver the scale boosters long promised. The Web-AI fusion will bring TradFi and DeFi together, allowing the financial system to work as a single stack.

The internet stands at a pivotal inflection point, undergoing a transformative evolution beyond Web3’s singular focus on decentralization and user ownership. This paradigm is characterized by the profound convergence of artificial intelligence and distributed ledger technology (DLT) — opening an era where autonomous agents operate proactively on behalf of users. This fundamental shift reshapes digital economic activity, user experiences and the very architectural underpinnings of the internet.

Even a decade since its inception, the aspirations of Web3 regarding decentralization and digital sovereignty have for the most part not materialized at the consumer interface. But the recent emergence of generative AI, large language models and autonomous agents is now instigating a new developmental phase of Web-AI. In this era, the synergy of AI and DLT is enabling intent-based, agent-driven interactions, which are allowing a fundamental re-envisioning of the internet’s structural organization and economic principles. While the Web3 era introduced significant advancements such as decentralization and user sovereignty, the Web-AI convergence introduces an advanced conceptualization and special technology stack — engineered not only to rectify the limitations of Web3 but also to empower intelligent agents and foster seamless interoperability across human, machine and decentralized systems.

These developments are being accelerated by cryptographic innovations such as fully homomorphic encryption (FHE), zero-knowledge proofs (ZKPs) and post-quantum cryptography (PQC). These technologies address critical challenges in data privacy, regulatory compliance and future-proof security, establishing a foundation for the next-generation financial stack and enabling a secure, private and quantum-resistant Web-AI financial infrastructure.

Web1-2-3 and the AI fusion that comes next

Internet architecture has evolved through different phases, starting from the read-only and static Web1 to the read-write Web2 with centralized platforms of user-generated content. That was followed by Web3, which could be described as read-write-own (with ownership incorporated into the internet using distributed ledger technologies such as blockchain). Although many still hope for a further evolution of Web3, the internet is actually on the cusp of another shift — to the Web-AI paradigm.

The core flaw currently facing the traditional financial system is misalignment with the Web3 revolution, where decentralized protocols were not designed for human interaction. The complexity of managing private keys, gas fees and decentralized Web3 applications created a gap limiting wider adoption. But increasingly, the maturation of AI agents, continued development of large language models and DLTs can provide trust, privacy and data verification. Continued evolution of AI can also be expected to gradually reduce system and operation complexity. This transformation will form the base for Web-AI, where users won’t just “read, write and own” — they’ll also delegate operational tasks to their customized AI agents.

The limitations of blockchain technology, which promoters have promised for at least a decade would decentralize finance, have become apparent. Blockchains are excessively complex, feature poor usability and — crucially — have failed to displace TradFi platform dominance. The Web-AI paradigm, however, will bring together AI with blockchains to move beyond human-centric interaction and
unlock autonomous agents executing tasks on behalf of users. AI agents are improving incrementally and becoming more reliable. Initially capable only of basic tasks, the agents are learning from errors, and there’s reason to believe that, in the future, they will be able to make better financial decisions than humans.

Encryption evolution is helping enable the shift

These developments are being accelerated by cryptographic innovations such as fully homomorphic encryption, zero-knowledge proofs and post-quantum cryptography. These technologies address critical challenges in data privacy, regulatory compliance and future-proof security, establishing a foundation for the next-generation financial stack and enabling a secure, private and quantum-resistant Web-AI financial infrastructure.

Fully homomorphic encryption (FHE) is a critical component for transforming privacy and security on the web, especially as AI becomes integral to online services. FHE allows computations to be performed directly on encrypted data, enabling both websites and AI-driven cloud services to process user information without ever decrypting it. This means sensitive data can remain confidential even during advanced analytics or machine-learning processes, a crucial feature for protecting personal information from data breaches, unauthorized access or surveillance.

With AI systems increasingly being used to analyze user behavior and a huge range of personal data such as medical records and financial transactions, the use of FHE ensures that AI can pull those insights without sacrificing privacy. As the web evolves toward more intelligent and decentralized applications, the use of FHE alongside DLT and AI offers a robust approach that maximizes data utility and innovation while upholding the highest standards of privacy and cybersecurity. The technology is also resistant to quantum attacks which could break types of encryption widely used today, making it an indispensable long-term tool for data protection. In both DeFi and TradFi, FHE can support (1) secure data collaboration, where banks and financial institutes can jointly analyze encrypted customer data for risk assessment without sharing the raw data; (2) real-time analysis of encrypted transaction streams that can identify anomalies while preserving user privacy; and (3) verification of data integrity without accessing plaintext records.

Web giants such as Google and Meta exploit network effects to stifle competition and innovation by rivals. User data in centralized platforms is monetized, and data can also be used to manipulate trends and economic dynamics. Distributed ledgers alone cannot solve those issues because limits to their scalability and friction with developers hinder mass adoption. Meanwhile, AI alone lacks
verifiability and invites further centralization. But together, both technologies can form a complementary framework: AI/machine learning can be joined together with DLT and zero-knowledge proofs (ZKPs), where the ledgers verify execution and the use of ZKPs enables trustless verification. revolutionizing DeFi and TradFi workflows. Such an arrangement could allow financial actors to comply with know- your-customer and anti-money-laundering regulations without revealing sensitive personal data like ID numbers or account balances; validate DeFi transactions or determine loan eligibility without exposing wallet histories; and instantly prove solvency or capital adequacy to regulators through ZPKs while reducing dependency on trusted third parties, driving down costs and
latency time.

Another emerging cryptographic innovation, post-quantum cryptography (PQC), will help counter the serious threat posted to current encryption protocols by massively powerful quantum computers. Migrating payments to networks using PQC algorithms (such as FIPS 203, FIPS 204, FIPS 205, CRYSTALS-Kyber) can prevent so-called harvest now, decrypt later attacks, where secure data is gathered now and stored until advances in quantum computing are able to defeat the protection of strong encryption algorithms. In this way, PQC can ensure the viability of long-lived digital assets such as central bank digital currencies (CBDCs). Global initiatives like the Bank of International Settlements’ Quantum Leap Project prioritize PQC adoption in DeFi and TradFi infrastructure.

  • FHE + ZKPs: Enable cross-institutional data pooling (e.g., fraud detection across banks) without compromising confidentiality.
  • PQC + ZKPs: Ensure that tokenized assets remain secure, transparent and auditable. Helps maintain security against quantum threats while meeting increasing demands for regulatory oversight.

Learning to love the new architecture

Financial regulation is also experiencing a profound transformation as these new technologies transform the sector, and as regulators worldwide navigate the complex intersection of things like ZKPs, PQC and blockchain infrastructure. This regulatory evolution represents one of the most significant paradigm shifts in financial oversight since the advent of digital banking, altering how both TradFi and DeFi ecosystems operate, compete for and serve their customers.

Traditional financial regulations were designed for centralized, intermediated systems where transparency was achieved through institutional oversight and reporting mechanisms. However, the emergence of blockchain technology has challenged these fundamental assumptions, creating a regulatory paradox where the very features that make blockchain valuable — such as decentralization — come into conflict with existing compliance frameworks. Regulators across jurisdictions are struggling to balance innovation with consumer protection, financial stability and anti-money-laundering requirements.

The regulatory response has been fragmented and evolving. The European Union’s Markets in Crypto-Assets (MiCA) regulation represents one of the most comprehensive attempts to create a unified framework, while the United States continues to develop its approach through various agencies including the US Securities and Exchange Commission, the Commodity Futures Trading Commission and the Treasury Department. Asian markets like Singapore and Japan have pioneered more progressive regulatory sandboxes, allowing controlled experimentation with blockchain-based financial services.

Zero-knowledge proofs are emerging as the critical technology that reconciles the seemingly incompatible demands of privacy and regulatory compliance. ZKP systems allow parties to prove the validity of statements without revealing the underlying data, creating unprecedented opportunities for privacy-preserving compliance mechanisms. In the context of financial regulation, this means institutions can demonstrate compliance with capital requirements, transaction limits and risk parameters without exposing sensitive customer data or proprietary trading strategies. Banks can now prove to regulators that they maintain adequate reserves without revealing specific account balances or customer identities. Trading firms can demonstrate compliance with position limits without disclosing their exact holdings or strategies. Cross-border payment
processors can verify sanctions compliance without revealing transaction details to intermediate parties. This capability is driving regulatory interest in ZKP technology, with several central banks exploring ZKP-based CBDCs that could provide monetary policy tools while preserving transaction privacy.

This is among the reasons why financial institutions are increasingly putting money into ZKP infrastructure, recognizing that privacy-preserving compliance will become a competitive advantage. Major banks, for instance, are experimenting with ZKP-based solutions for trade finance, where multiple parties need to verify compliance with complex international regulations without sharing sensitive commercial information. Insurance companies are exploring ZKP systems for fraud detection that can identify suspicious patterns across the industry without revealing individual customer data.

This burgeoning industry interest is being amplified by the simultaneous regulatory push for PQC, accelerating innovation in quantum-safe blockchain protocols and driving investment in hybrid cryptographic systems that can transition seamlessly from classical to post-quantum algorithms, ensuring continuity of operations during the cryptographic migration period. Regulators are urgently focusing on the threat that quantum computing poses to current cryptographic systems.

Quantum computers capable of breaking current encryption standards (such as RSA and elliptic curve cryptography) could emerge within the next 10 to 15 years, potentially compromising decades of encrypted financial data. The National Institute of Standards and Technology has standardized several post-quantum cryptographic algorithms, and financial regulators are beginning to mandate their adoption. The US Federal Financial Institutions Examination Council has issued guidance requiring financial institutions to develop quantum-readiness plans, including timelines for PQC implementation. European banking authorities are following suit, with the European Banking Authority developing quantum risk-assessment frameworks.

For traditional financial institutions, the shift to integrate these new cryptographic standards and technologies and meet evolving regulatory requirements means fundamental changes in their operations. It goes well beyond simple digitization, instead representing a reimagining of core financial processes to build them around cryptographic proofs and decentralized verification mechanisms. The result is more efficient capital allocation, reduced compliance costs and improved risk management.

For instance, banks are developing blockchain-based settlement systems that provide real-time regulatory reporting while maintaining transaction privacy through ZKP implementations. These systems enable continuous compliance monitoring, replacing periodic regulatory examinations with ongoing
cryptographic proofs of compliance. Likewise, new quantum-safe communications channels, PQC-based digital identity systems and quantum-resistant backup systems for critical financial data are also being adapted or created as proactive responses to developing regulatory requirements — as well as potential competitive differentiators for security and privacy-conscious customers.

Even though the DeFi ecosystem was built around newer technologies, it too is undergoing a dramatic transformation as it adapts to regulatory requirements while seeking to preserve core principles of decentralization and permissionless access. Here, too, these evolving cryptographic protocols are playing a key role. Emerging ”RegFi” (or regulatory finance) protocols can integrate compliance mechanisms directly into smart contract architecture by using ZKP systems. DeFi protocols are also implementing sophisticated compliance layers that can verify
user eligibility, monitor transaction patterns for suspicious activity and generate regulatory reports without compromising user privacy or protocol decentralization.

These systems use ZKP circuits to prove compliance with various regulatory requirements — from know-your-customer verification to sanctions screening — while keeping user data private and maintaining the permissionless nature of DeFi protocols. Blockchain networks are now being designed with post-quantum cryptography from the ground up, while existing protocols are implementing upgrade paths to implement quantum-resistant algorithms. This proactive approach is attracting institutional adoption, as traditional financial institutions require quantum-safe infrastructure for their DeFi interactions. CBDCs represent the most visible manifestation of this convergence. CBDCs combine the efficiency of blockchain technology with the regulatory oversight of traditional central banking, using ZKP systems to provide monetary policy tools while preserving transaction privacy. The implementation of quantum-safe CBDCs is becoming a priority for central banks worldwide, recognizing the long-term security implications of quantum computing.

New competitive dynamics are being created in the financial services industry by this convergence. Institutions that successfully integrate ZKPs, PQC and blockchain technologies into their operations will gain significant advantages in terms of operational efficiency, regulatory compliance, customer privacy and long-term security. Those that fail to adapt risk being left behind in an increasingly complex and technologically sophisticated regulatory environment. The development of global standards for ZKP-based compliance, blockchain interoperability and PQC implementation will be crucial for creating a stable and efficient global financial system. International cooperation between regulators will be essential to prevent regulatory arbitrage and ensure consistent standards across jurisdictions.

The future of finance will be built on cryptographic foundations that enable privacy, security and compliance in ways that would have been highly complex just a few years ago. Financial institutions, regulators and technology providers that understand and adapt to this evolution will shape the future of global finance.

The Web-AI convergence

The transition from human-centric to agent-centric financial operations represents more than an evolutionary step; it is a paradigmatic shift that fundamentally alters how financial services are conceived, delivered and regulated. The Web-AI framework enables autonomous agents to operate with unprecedented sophistication while maintaining the security, privacy and
compliance requirements essential for institutional adoption. This transformation addresses the persistent usability barriers that have hindered Web3 adoption while simultaneously creating new opportunities for financial innovation that were previously impossible under either traditional or purely decentralized models.

For financial institutions, the implications of this convergence are profound and immediate. Organizations that proactively adopt these technologies will not merely gain competitive advantages; they will fundamentally transform their operational capabilities, risk profiles and value propositions. The ability to process encrypted data through FHE, prove compliance without revealing sensitive information through ZKPs and maintain security against quantum threats through PQC will soon become baseline requirements. The window for strategic positioning in this new landscape is rapidly narrowing, making immediate action essential for long-term viability. Looking forward, the successful implementation of Web-AI financial systems will require continued collaboration between technology developers, financial institutions and regulatory bodies.

The technical complexity of integrating AI agents, blockchain infrastructure and advanced cryptographic systems demands sophisticated implementation strategies and robust governance frameworks.

However, the potential benefits — including enhanced privacy, improved efficiency, reduced costs and increased security — justify the investment and effort required for successful adoption. For financial institutions, adopting this cryptographic triad is not optional but a strategic necessity.

Author

  • Dr. Jacob Mendel is the co-chief technology officer at Parfin, a leading digital asset infrastructure firm based in Brazil. He is also a senior lecturer at Tel Aviv University’s Coller School of Management, where he does work on cryptography and cybersecurity. His previous experience includes senior positions working on cybersecurity and blockchain at Intel, JP Morgan and State Street. He holds a PhD in economics and a master’s of business administration from Ben-Gurion University of the Negev.

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