~hackernoon | Bookmarks (2034)

This section explains how Layer-2 rollups reduce costs and improve scalability for blockchain networks, and examines Project Mariana’s L1 AMM model for CBDC exchange.

This paper proposes a multi-layer blockchain system using Layer-2 and competing Layer-3 AMMs to enable cheaper, scalable cross-border CBDC trading, outperforming Project Mariana in simulations.

Avi Schiffmann is the Founder/CEO of Friend.com, the new AI necklace companion. Previously Avi dropped out of Harvard and founded InternetActivism.org, where he notably built a COVID tracker that over 600M people visited. Avi was kind enough to spend a few minutes sharing his rare insights with the HackerNoon community. 

This prompt guides you to explore blockchain nodes—what they are, how they work, and why they matter. Cover different node types, transaction validation, consensus models, and how node providers like GetBlock reduce the complexity for developers. Ideal for Web3 newcomers and contest participants alike.

BingX is celebrating its 7th anniversary with a user story campaign. The campaign invites users to share their unique journeys and unforgettable moments with BingX. BingX is offering a 10,000 USDT Early Bird Prize Pool for the first 1,000 participants.

This week, we are proud to present Aptible, a Platform as a Service (PaaS) that gives startups everything they need to launch and scale apps and databases that are secure, reliable, and compliant.

Learn how color grading works, what color targets are, and build your own palette-based grading tool in React — from scratch and with purpose.

A new way to learn SQL: solve crimes using real SQL queries. Build database logic fast with interactive storytelling and gamified practice.

A fictional CEO learns the real-world importance of blockchain nodes—decentralized computers that validate transactions and prevent financial fraud through consensus.

Learn about the development of a multi-stage Langchain agent for MySQL, including the challenges faced and lessons learned.

CNN's John Sutter shares four stories of people he's done business with who were deeply unwell psychologically. Sutter: "I ask myself whether it's a degree of insanity within myself that has attracted these people and circumstances"

HIKMICRO showcased its game-changing "digital system" concept at the IWA Outdoor Classics 2025 in Nuremberg. The company, known for its cutting-edge digital optics, has introduced an integrated technological ecosystem that enhances every aspect of the hunting experience.

In this blog, we will outline the step-by-step journey to establish a successful cybersecurity career—from the fundamentals to becoming an expert.

Learn how to perform a basic vulnerability scan using free tools like Nmap & Nikto. A simple step-by-step guide to find and fix security flaws.

iAsk AI just passed half a billion searches. That’s not a typo. 500,000,000+ questions asked, problems solved, papers summarized, and headaches avoided.

Tonga’s digital government is broken. From Gmail addresses to insecure sites, here’s why basic tech standards could transform public services for everyone.

Discover how blockchain can help decentralize and democratize AI through open data, decentralized storage, and community-driven governance.

Go 1.24 comes with many improvements over Go 1.23. The language now fully supports type aliases. The standard library now includes mechanisms to facilitate FIPS 140-3 compliance.

Explore how DAI maintains its $1 peg through smart contracts, market belief, and simulations—plus key risks affecting stablecoins in volatile DeFi markets.

Explore how DAI maintains its $1 peg through smart contracts, market belief, and simulations—plus key risks affecting stablecoins in volatile DeFi markets.

Explore how DAI maintains its $1 peg through smart contracts, market belief, and simulations—plus key risks affecting stablecoins in volatile DeFi markets.

Explore how DAI maintains its $1 peg through smart contracts, market belief, and simulations—plus key risks affecting stablecoins in volatile DeFi markets.

Explore how DAI maintains its $1 peg through smart contracts, market belief, and simulations—plus key risks affecting stablecoins in volatile DeFi markets.