Blockchain and Cryptography

Reimagining Compliance, Trust and TPRM: Could Blockchain End Our Reliance on PDFs, Screenshots and Questionnaires? ⛓️ Why not use proof instead of trust. And what if instead of trusting auditors, we also trust math? 🔢 Who trusts Attestations and Certifications? 📋 SOC 2 provides trust. You also require trust. You trust that: - The vendor implemented what they claimed (lol, sure) - The auditor properly validated those claims (with screenshots, of course) - Controls haven't degraded since assessment (infrastructure never changes) - Documentation reflects reality (boilerplate policies FTW) But in security, trust isn't a strategy - verification is. Blockchain Security Validation: Trust the Proof ⛓️ Imagine replacing subjective assessment with cryptographic verification: - Configuration states are validated and cryptographically signed - Results immutably recorded on blockchain, evidence are now tamper-proofed - Smart contracts can validate controls automatically against predefined criteria - You can check historical record showing continuous compliance, - Easy real-time alerting when controls drift from attested state Rather than an auditor telling you that "encryption is used," the system would cryptographically verify that "TLS 1.3 is correctly implemented on all endpoints with no deprecated ciphers." Documentation Theatre to Verifiable Security 🎭 This transforms security attestation from paperwork exercise to mathematical proof: - Customers verify cryptographic evidence instead of reading through lengthy massaged control language - Vendors can prove continuous compliance, not just during audit cycles - Configuration drift triggers immediate alerts, not annual findings - Technical teams focus on implementation, not documentation - Customers can check control effectiveness without seeing sensitive implementation details, preserving vendor confidentiality The blockchain creates a permanent, verifiable history addressing both trust issues and point-in-time limitations of current attestations. Why This Matters 🎯 By bridging the documentation-reality gap with cryptographic proof, we eliminate the need for sample-based shallow testing. Imagine never having to answer "Do you have MFA?" again because customers can verify your MFA implementation themselves. The Path Forward 🚀 This isn't woo-woo - the building blocks exist today. We have: - Secure enclave technologies for sensitive validation - Smart contract platforms for attestation logic - API-driven cloud environments ready for integration - Zero-knowledge proofs for private verification What's missing is standardisation and ecosystem adoption. The first vendor to implement this model won't just streamline compliance/audit - they'll fundamentally change TPRM/customer trust dynamics. PS: This wouldn't work for all controls, lots of legal liability to work through, etc. #GRCEngineering

Researchers at the University of Kent have raised concerns about the vulnerability of Bitcoin and other blockchain technologies to quantum computing. In a yet-to-be-peer-reviewed study, they suggest that a sufficiently advanced quantum computer could crack Bitcoin’s cryptographic security, posing an existential threat to the cryptocurrency ecosystem. The announcement follows Google’s recent unveiling of its 105-qubit ‘Willow’ quantum chip, which demonstrated computational power far beyond classical supercomputers. This breakthrough reignited fears about the potential for quantum computers to bypass Bitcoin’s encryption, which relies on algorithms like SHA-256 and ECDSA (Elliptic Curve Digital Signature Algorithm) for transaction security. Key Findings from the Study: 1. Quantum Threat to Bitcoin: A sufficiently advanced quantum computer could break Bitcoin’s encryption, potentially allowing malicious actors to steal funds or manipulate transactions on the blockchain. 2. Lengthy Update Downtime: Transitioning Bitcoin’s infrastructure to quantum-resistant cryptography could require up to 76 days of downtime, during which the blockchain would be extremely vulnerable. 3. Staggering Financial Losses: The disruption caused by such an attack or even the preparation for a quantum-safe upgrade could result in astronomical financial losses. How Quantum Computers Could Crack Bitcoin • Bitcoin uses public-private key pairs for secure transactions. • A quantum computer with sufficient qubits and error correction capabilities could reverse-engineer private keys from public keys using Shor’s Algorithm. • Once private keys are exposed, attackers could authorize transactions and effectively drain wallets. Potential Solutions: • Post-Quantum Cryptography (PQC): Researchers are actively developing encryption methods resistant to quantum attacks, such as lattice-based cryptography. • Blockchain Hard Fork: Implementing a system-wide upgrade to quantum-resistant algorithms before quantum computers reach the necessary scale. • Hybrid Cryptography: Using a combination of classical and quantum-resistant cryptographic methods during the transition period. The Road Ahead: While quantum computers capable of such feats are not yet operational, the rapid advancements in the field suggest it’s only a matter of time. The Bitcoin community, developers, and stakeholders must act proactively to adopt quantum-resistant encryption standards to safeguard the cryptocurrency’s future. As Carlos Perez-Delgado, co-author of the study, points out: “Even brief downtime or delays in blockchain updates can result in catastrophic consequences in a financial system of this scale.”

The original thesis of blockchain was the freedom to transact: an immutable, transparent ledger that no one could censor. Transparency was a powerful starting point, but as a default, it has become a constraint rather than a catalyst. The era of crypto money endlessly circulating within itself is ending. To unlock trillions in institutional and real-world capital, Web3 must evolve. The missing layer is not speed or liquidity. It is privacy, confidentiality, and Smart Compliance. Smart Compliance is the bridge. It enables systems that meet regulatory requirements without exposing everything to everyone. It replaces radical transparency with selective disclosure, enforced by cryptography rather than intermediaries. Midnight is building the foundation for this next phase: On-chain Banking Private payroll, confidential treasury operations, and enterprise-grade financial flows with compliance built in. Regulatory Compliance Tokenized bonds and real-world assets with programmable, selective disclosure for regulators and counterparties. Digital Identity KYC and KYB where individuals and institutions control what data is shared, with whom, and when. The next iteration of Web3 will be defined by Smart Compliance: systems that respect the rule of law while restoring privacy as a first-class primitive. #Web3 #SmartCompliance #Privacy #Blockchain #MidnightProtocol #Fintech #DigitalIdentity

#blockchain :A Survey on the Applications of Zero-Knowledge Proofs. Zero-knowledge proofs (ZKPs) represent a revolutionary advance in computational integrity and privacy technology, enabling the secure and private exchange of information without revealing underlying private data. ZKPs have unique advantages in terms of universality and minimal security assumptions when compared to other privacy-sensitive computational methods for distributed systems, such as homomorphic encryption and secure multiparty computation. Their application spans multiple domains, from enhancing privacy in blockchain to facilitating confidential verification of computational tasks. This survey starts with a high- level overview of the technical workings of ZKPs with a focus on an increasingly relevant subset of ZKPs called zk-SNARKS. While there have been prior surveys on the algorithmic and theoretical aspects of ZKPs, this report is distinguished by providing a broader view of practical aspects and describing many recently-developed use cases of ZKPs across various domains. These application domains span blockchain #privacy , scaling, storage, and interoperability, as well as non-blockchain applications like voting, authentication, timelocks, and machine learning.

BREAKING: Two new papers just dropped that suggest Q-Day is closer than we thought. Is Bitcoin toast? Tl;dr: Two research teams independently showed that breaking the encryption behind Bitcoin, Ethereum, and most of the internet requires far fewer quantum resources than previously estimated — and those resources are approaching engineering reality. Yesterday, Google published a whitepaper with updated estimates for cracking the elliptic curve cryptography (ECC), which secures virtually all major blockchains. Their finding: a superconducting quantum computer with fewer than 500,000 physical qubits could derive a Bitcoin private key in about 9 minutes. A quantum attacker could intercept a transaction in progress, crack the key, and submit a fraudulent replacement before the original is recorded. Today, a team from startup Oratomic and Caltech showed that a neutral atom quantum computer could do the same thing with as few as 10,000 physical qubits — but in days, not minutes. Labs have already demonstrated neutral atom arrays with 6,100+ qubits. Google also published a zero-knowledge proof that their circuits work without revealing the circuits themselves. Think of it as telling the world "we can pick this lock" while refusing to publish the instructions. But cryptocurrency is only part of the story. The same math that secures Bitcoin also secures TLS (every HTTPS website), SSH (remote administration), firmware signing, electronic passports, encrypted messaging, and IoT authentication – among other things. The quantum threat to blockchain is a specific instance of a much, much broader problem. NIST finalized post-quantum cryptography standards in 2024 and migration is underway for some systems. But it's slow, expensive, and for dormant crypto assets, impossible. The time to start moving to post-quantum cryptography...is NOW. Google paper: https://lnkd.in/eUMbf78u Oratomic/Caltech paper: https://lnkd.in/emn7ihf7

𝐃𝐞𝐜𝐨𝐝𝐢𝐧𝐠 𝐆𝐨𝐨𝐠𝐥𝐞’𝐬 𝐐𝐮𝐚𝐧𝐭𝐮𝐦 𝐅𝐫𝐨𝐧𝐭𝐢𝐞𝐫: 𝐓𝐡𝐞 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐑𝐞𝐜𝐤𝐨𝐧𝐢𝐧𝐠 In studying Google’s Quantum AI laboratory, I’ve been dissecting how their superconducting qubit breakthroughs are quietly redrawing the map of digital trust. Their 105-qubit Willow chip doesn’t just compute faster; it breaches the once-sacred wall between classical cryptography and post-quantum reality. With two-qubit error rates below 0.001, Willow has achieved a verified quantum advantage—13,000× faster than the world’s best supercomputers in molecular modeling—and it does so with reproducible fidelity. What few are discussing is the shadow this casts on blockchain security. Elliptic curve cryptography, the backbone of Bitcoin and countless ledgers, may soon yield to quantum factorization. Google’s roadmap implies that by the early 2030s, logical qubit counts will make Shor’s algorithm a weapon, exposing reused keys and legacy chains. Some networks like Algorand and MultiversX are already migrating to lattice-based defenses, while Ethereum is testing Dilithium-class post-quantum signatures. Yet Google’s research hints at something more radical—quantum money that abandons ledgers entirely, enforcing scarcity through the no-cloning theorem. This isn’t just evolution; it’s an existential rewrite of digital economics. Quantum mechanics itself becomes the trust layer, and physics replaces consensus. For those building tomorrow’s cryptographic and robotic systems, the call is clear: we must hybridize now—merging post-quantum cryptography, quantum-secure command channels, and AI autonomy before the quantum dawn arrives. Join Singularity Systems, the current research arm of Cybersecurity Insiders in asking the questions that have not been asked!

Most people think blockchain is about decentralization. It isn’t. It’s about time. More specifically, cryptographic time. When I first started working on distributed systems, one problem kept resurfacing: How do you prove when something happened, without trusting the clock, the server, or the operator? In centralized systems, timestamps are mutable. Admins can rewrite logs. Databases can be rolled back. History can be interpreted. In systems that manage value, rights, or enforcement, that’s unacceptable. Cryptographic time stamping changes the equation. It binds data to a point in time using hash functions and consensus ordering, making the existence of an event provable without trusting any single party. That’s not a UX feature. It’s a structural guarantee. Time stamping is what makes: • Audit trails defensible • Identity histories durable • Governance enforceable • Compliance provable Without verifiable time, you don’t have a ledger. You have a database. And databases answer to administrators. Ledgers answer to math. If your system handles money, identity, compliance, or AI decisions, ask yourself: Can you prove when something happened, or do you just record that it did? There’s a difference. And it matters more than most people realize.

🔎 Bridging Transparency and Privacy with Blockchain Blockchain technology has revolutionized data management by enabling decentralized infrastructures that store and exchange information. However, traditional #blockchain infrastructures often fall short of GDPR principles, such as the right to erasure. In these cases, #technologies like ZK and FHE become indispensable allies. ZK allows users to verify information without revealing sensitive data. For instance, identity verification can be achieved without disclosing unnecessary personal details. This capability directly addresses the conflict between blockchain's transparency and the GDPR's privacy mandates. On the other hand, FHE offers the ability to process encrypted data without needing to decrypt it. This ensures that even the most complex analyses can be conducted without compromising confidentiality. For blockchain infrastructures, this means that #sensitive data, such as transaction logs or metadata stored in smart contracts, can remain encrypted while still being functional. Here is the full article: https://corporate-blog.global.fujitsu.com/fgb/2025-02-06/02/ Alfredo Joaquim Javier Almudena João Carlos

“Google has led the responsible transition to post-quantum cryptography since 2016. In a new whitepaper, we show that future quantum computers may break the elliptic curve cryptography that protects cryptocurrency and other systems with fewer qubits and gates than previously realized. We want to raise awareness on this issue and are providing the cryptocurrency community with recommendations to improve security and stability before this is possible, including transitioning blockchains to post-quantum cryptography (PQC), which is resistant to quantum attacks. https://lnkd.in/e268xP2G

Quantum-ready blockchain strengthens digital trust by protecting data, smart contracts, and decentralized operations from quantum threats. We must see this evolution as essential for the future of digital ecosystems. Quantum computing is progressing faster than many expected, and traditional encryption could soon be insufficient. Preparing our infrastructures today means protecting the integrity of tomorrow’s data flows. A quantum-safe blockchain applies advanced cryptography designed to resist future decryption algorithms. It enables organizations to automate processes securely, manage collaboration without central authorities, and maintain transparency across complex networks. These qualities will be critical for global businesses that depend on reliability, privacy, and interoperability. The transition toward quantum security is not only a technical necessity but also a cultural shift toward long-term digital resilience. It challenges us to think beyond current risks and to build trust into every layer of our digital interactions. #QuantumComputing #Blockchain #CyberResilience