Developers

Flow transactions reach cryptographically-backed soft finality in ~4 seconds and hard finality in ~10 seconds — not minutes or days. Learn how Flow minimizes reorg risk, eliminates optimistic assumptions, and enables DeFi and app experiences with real economic guarantees and near-instant certainty.

Most NFTs store their artwork off-chain, on IPFS, Arweave, or centralized servers. The metadata might point to ipfs://Qm... or https://api.example.com/token/1, leaving the actual image hosted elsewhere. This works, but it introduces dependencies. IPFS gateways go down. Centralized servers get shut off. Your "permanent" NFT suddenly has a broken image.On-chain SVG NFTs solve this by storing the artwork directly in the smart contract. The SVG markup lives on the blockchain forever, rendered by any browser that reads the token's metadata. No external dependencies. No broken links. True permanence.

Modern development increasingly relies on pairing developers with AI assistants, and @onflow/react-sdk is the first Flow toolkit designed specifically for this reality.

Over 3,300 builders. More than 400 projects. $250,000 in prizes. Forte Hacks brought together some of the brightest builders from across the globe to create the next generation of onchain finance, from yield protocols to prediction markets to onramp in developing countries and DeFi tools built for everyone.

Blockchain and Web3 development can seem intimidating at first, but the Flow network and its smart contract language Cadence make it surprisingly accessible. This guide walks through building a complete blockchain application from scratch, all the way to a working "Hello World" example with a React frontend.

Flow dominated ETH Global once again, with one in every four hackers building on Flow. At ETHGlobal New York 2025, Flow was the number 1 network of choice for developers as the most hacked on technology across the entire hackathon. A result of committing to empowering builders, community scholars and exciting the imagination of builders through groundbreaking keynotes redefining what’s possible onchain

The Cadence smart contract programming language utilizes a powerful new concept for access control: entitlements. These work alongside capabilities, references, and interfaces to give developers unprecedented flexibility in how they define access, enforce security, and enable composability in applications.

Flow has rolled out an important upgrade that significantly enhances how NFTs can move between EVM and Cadence.

Generating randomness on-chain is notoriously hard. You need a number that’s unpredictable before it’s revealed, unbiased during its generation, and verifiable afterward. To make things even more challenging, nodes of the network have to generate and agree on random numbers in a distributed and decentralized manner. With these nearly opposing constraints, traditional random functions (like Math.random()) aren’t an option.

Following standout appearances at ETHGlobal events from San Francisco to Bangkok, Flow made a powerful mark at ETHGlobal Taipei, showcasing why it’s quickly becoming the Layer 1 of choice for Developers. From an amazing sunset cruise to strong hackathon participation, Flow continued its mission: empowering developers to create real-world consumer applications that scale.

Flow is pushing the boundaries of blockchain efficiency and scalability.

The Flow team is heading to Taipei! Join us at the ETHGlobal Hackathon from April 4–6, 2025, where Flow is sponsoring $10,000 in bounties for developers building the next wave of consumer crypto applications. Whether you’re working on games, AI agents, RWAs, or social apps—Flow is the chain that gets you to real users and energized communities, fast.

The Flow foundation is excited to announce its latest release: a Wagmi & RainbowKit adapter for FCL that empowers developers to seamlessly integrate Cadence into existing EVM applications.

Superior Web3 apps start with reimagining UX. Flow’s EVM compatibility + Cadence enable seamless atomic transactions, reducing friction & unlocking new possibilities.

From December 1st to 31st, developers across Asia compete online to build the next killer app on Flow.

With 99 apps built on Flow and over 2000 builders, nearly one-third of ETHGlobal winners were Flow projects.

Flow is home to games that scale to millions, like NBA Top Shot, with great UX and and features like true randomness empowering devs to create the next killer app.

Join the cofounders of Flow, Ethereum, and MetaMask in Chiang Mai for the next stop on the Flow World Tour.

At ETHGlobal San Francisco, Flow was the most built on L1 network, and one of the most popular choices for developers

An analysis of the Crescendo upgrade on Flow, the downtime it caused, and how it was resolved.

Hack sports IP and create the next killer app at ETHGlobal San Francisco between Oct 18 and 20th, 2024.

At ETHGlobal in Singapore, over a quarter of participants hacked on Flow, more than 50 apps were built, and hundreds of developers joined the ecosystem.

Flow empowers developers to use Secure Enclave technology to create transform phones into wallets with an enhanced user experienced and security.

How Cadence enabled Flow Community Rewards, a system for incentivizing participation and enhancing engagement within the Flow ecosystem.

Flow provides everything needed create a killer app in DeFi.