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by HackerNoon
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- Yesterday3 min
Rho Labs Announces Rho Relay, Bringing Private Cross-Chain Settlement To The Canton Network
This story was originally published on HackerNoon at: https://hackernoon.com/rho-labs-announces-rho-relay-bringing-private-cross-chain-settlement-to-the-canton-network. Built for the next phase of crypto market structure, Rho Relay is designed to be more than a conventional bridge or swap interface. It brings Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #web3, #canton, #blockmanwire, #press-release, #blockchain-development, #crypto-exchange, #crypto-adoption, #good-company, and more. This story was written by: @blockman. Learn more about this writer by checking @blockman's about page, and for more stories, please visit hackernoon.com.
- 2 days ago12 min
Can Claude Audit Smart Contracts? Zero-Shot Vulnerability Detection Across Five SWC Classes
This story was originally published on HackerNoon at: https://hackernoon.com/can-claude-audit-smart-contracts-zero-shot-vulnerability-detection-across-five-swc-classes. Claude Sonnet 4.6 caught all five known smart contract vulnerabilities in a zero-shot benchmark test — but marked every single one as Critical. Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #smart-contract-security, #claude-sonnet-4.6, #solidity-vulnerabilities, #smartbugs-benchmark, #smart-contract-auditing, #ethereum-security, #reentrancy-attacks, #hackernoon-top-story, and more. This story was written by: @dilraboorziqulova. Learn more about this writer by checking @dilraboorziqulova's about page, and for more stories, please visit hackernoon.com. This article evaluates Claude Sonnet 4.6 on five vulnerable Solidity contracts from the SmartBugs Curated benchmark using a zero-shot auditing setup. Claude successfully identified all five primary vulnerability classes — including reentrancy, integer underflow, tx.origin misuse, timestamp manipulation, and unchecked send — while also surfacing additional valid findings across the contracts. The analysis focuses not only on detection accuracy, but on Claude’s tendency to consistently overestimate severity, raising questions about how LLMs should be positioned alongside tools like Slither and Mythril within real-world smart contract auditing workflows.
- 3 days ago10 min
Designing a Blockchain-Based Universal Healthcare Identity System With Hyperledger and GCP
This story was originally published on HackerNoon at: https://hackernoon.com/designing-a-blockchain-based-universal-healthcare-identity-system-with-hyperledger-and-gcp. A technical blueprint for building a blockchain-based Universal Healthcare ID system using Hyperledger Fabric, Google Cloud, and FHIR interoperability standards Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #healthcare-blockchain, #healthcare-tech, #google-cloud-platform, #universal-healthcare-id, #hyperledger-fabric, #healthcare-identity-management, #healthcare-cloud-architecture, #healthcare-data-fragmentation, and more. This story was written by: @dshivani. Learn more about this writer by checking @dshivani's about page, and for more stories, please visit hackernoon.com. This article proposes a production-grade Universal Healthcare ID (UHID) architecture designed to solve patient identity fragmentation across the U.S. healthcare system. Using Hyperledger Fabric for decentralized identity anchoring, Google Cloud Platform for healthcare data infrastructure, and FHIR/SMART interoperability standards for EMR integration, the piece outlines a three-layer system for secure patient identity resolution, consent management, and cross-provider healthcare coordination. It also explores governance, HIPAA compliance, auditability, and privacy challenges associated with nationwide healthcare identity infrastructure
- 3 days ago7 min
Bitcoin Miners are Not Disappearing. They are Being Repriced as AI Infrastructure
This story was originally published on HackerNoon at: https://hackernoon.com/bitcoin-miners-are-not-disappearing-they-are-being-repriced-as-ai-infrastructure. Bitcoin mining difficulty fell 7.76% at block 941,472 on March 21, 2026, marking the second-largest negative adjustment of the year. Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #web3, #bitcoin-mining, #btc, #ai, #emcd, #pool-mining, #bitcoin-mining-difficulty, #bitcoin-trading, and more. This story was written by: @MichaelJerlis. Learn more about this writer by checking @MichaelJerlis's about page, and for more stories, please visit hackernoon.com. Bitcoin mining difficulty fell 7.76% at block 941,472 on March 21, 2026, marking the second-largest negative adjustment of the year.
- 4 days ago13 min
Critical Minerals, Africa, & the Case for Tokenization as a Serious Financing Mechanism
This story was originally published on HackerNoon at: https://hackernoon.com/critical-minerals-africa-and-the-case-for-tokenization-as-a-serious-financing-mechanism. Africa holds 30% of the world's critical minerals but can't access the capital being built around them. Here's why tokenization may change that. Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #blockchain-in-africa, #tokenization, #critical-minerals, #financing, #tokenization-of-rwas, #u.s-defense-innovation, #investing-and-africa, #hackernoon-top-story, and more. This story was written by: @audreynesbitt. Learn more about this writer by checking @audreynesbitt's about page, and for more stories, please visit hackernoon.com. Western governments have built a financing architecture that makes critical minerals projects bankable, but it was designed for allied nations. Africa holds the geology the world needs and is largely locked out of that system. Tokenization of real-world mining assets is one of the more credible mechanisms for closing that gap, but only where the legal, infrastructure, and regulatory conditions exist to support it.
- 4 days ago12 min
Smart Contract Security: A Taxonomy of Vulnerabilities, Attacks, and Defenses
This story was originally published on HackerNoon at: https://hackernoon.com/smart-contract-security-a-taxonomy-of-vulnerabilities-attacks-and-defenses. A practical taxonomy of smart contract vulnerabilities, covering reentrancy, integer overflow, access control, MEV, invariant violations, and key defense strate Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #smart-contract-security, #smart-contracts, #ethereum, #solidity-vulnerabilities, #reentrancy-attack, #flash-loan-exploits, #smart-contract-auditing, #hackernoon-top-story, and more. This story was written by: @kamronbek. Learn more about this writer by checking @kamronbek's about page, and for more stories, please visit hackernoon.com. Smart contracts are immutable once deployed. A single bug can drain millions in minutes. This article builds a practical taxonomy of the most dangerous vulnerability classes: reentrancy, integer overflow, access control, MEV, and invariant violations. Each section explains the vulnerability with Solidity code, formal notation, and systematic defenses.
- 5 days ago8 min
WeFi Visa Deal Shows Stablecoins Still Need a Spending Layer
This story was originally published on HackerNoon at: https://hackernoon.com/wefi-visa-deal-shows-stablecoins-still-need-a-spending-layer. The volume is there. The checkout isn't. WeFi's stablecoin Visa card targets the gap between holding USDC and actually buying something with it. Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #stablecoins, #crypto-payments, #visa-crypto-card, #wefi, #usdc-usdt, #defi-spending, #fintech-payments, #crypto-adoption, and more. This story was written by: @gabrielmanga. Learn more about this writer by checking @gabrielmanga's about page, and for more stories, please visit hackernoon.com. The volume is there. The checkout isn't. WeFi's stablecoin Visa card targets the gap between holding USDC and actually buying something with it.
- 5 days ago6 min
Why the SEC Delayed Prediction Market ETFs
This story was originally published on HackerNoon at: https://hackernoon.com/why-the-sec-delayed-prediction-market-etfs. Prediction market ETFs were supposed to launch. The SEC paused them. Here's why settlement is broken, who has jurisdiction, and who ends up unprotected. Check more stories related to web3 at: https://hackernoon.com/c/web3. You can also check exclusive content about #prediction-market-etfs, #sec-etf-review-delay, #cftc-regulation, #binary-outcome-markets, #etf-settlement-risk, #prediction-market-regulation, #derivatives-etfs, #event-contract-etfs, and more. This story was written by: @vitaliiyatskiv. Learn more about this writer by checking @vitaliiyatskiv's about page, and for more stories, please visit hackernoon.com. Prediction market ETFs cleared the standard SEC review window, then the regulator asked for more time. The real issue is structural: event contracts settle on interpreted outcomes, not objective data, which creates ambiguity the ETF wrapper concentrates rather than resolves. There's also a jurisdiction gap between the CFTC, which oversees the underlying platforms, and the SEC, which oversees the fund. Neither agency has worked out what happens when those frameworks collide during a contested resolution with retail money already in the fund. The delay is likely temporary, but the problems it surfaces are not.
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