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Building the future of web3: the next era of Sequence

March 18 2025

The web3 adoption problem

Web3 has promised to revolutionize digital ownership, economies, games and applications, but the reality is that blockchains alone are not enough. They are powerful decentralized ledgers, but they lack the usable application layer developers need to build usable, scalable, and interconnected web3 experiences.

For years, the focus in web3 has been on scaling blockchains by optimizing raw blockspace, launching L2s and rollups, and pushing toward higher transaction throughput. But scalability alone isn’t enough. Blockchains are just infrastructure - they are the foundation, not the full stack.

Web3 has the potential to reshape games, applications, economies, and user experiences, but adoption has been bottlenecked by developer friction and fragmented ecosystems. Developers are still forced to stitch together fragmented solutions for wallets, indexing, gasless transactions, and marketplaces. Users face unnecessary complexity when moving across apps and chains, losing network effects along the way.

The real challenge isn’t making blockchains faster, it’s making blockchains useful. This is where Sequence comes in.

The Sequence vision: enabling the application layer of web3

We are building the developer platform and application layer stack for web3. Sequence is the infrastructure that makes web3 development accessible, powerful, and interconnected – so developers can focus on building games, apps, and next-generation onchain economies that scale.

Instead of thinking of blockchains as individual networks, we see web3 as a unified platform where developers can build seamlessly and users can move frictionlessly across ecosystems.

Our approach

• The end of wallet fragmentation: Users should be able to move across apps and games without creating new wallets every time. Our Ecosystem Wallet enables seamless access across an entire chain or game universe, preserving buying power and engagement.
• One developer platform for all chains: Instead of forcing developers to manage custom RPCs, indexers, or fragmented infrastructure, Sequence provides a full-stack backend and SDKs to simplify development.
• An open and scalable future: Web3 infrastructure should be open, modular, and developer-first. That’s why we’re open-sourcing our key technologies and making them deployable at the ecosystem level.

At GDC, we are doubling down on this vision with new releases that give chains, ecosystems, and developers more control, more scalability, and more seamless experiences for their users.

New product releases: unlocking developer scale

1. Ecosystem Wallets: a federated wallet experience for your entire ecosystem

A next-generation wallet solution that combines the power of Universal and Embedded Wallets, eliminating the need for users to create new wallets for every app.

Web3 experiences have been fragmented due to inadequate wallet solutions. Ecosystem Wallets are a paradigm shift for network effects and interoperability between chains, users, and apps—providing a federated single sign-on across a chain’s entire ecosystem of apps and users that drives digital economies and onchain commerce. Sequence wallet infrastructure is open source and verifiable building on strong principles of security and self-custody design.

• Seamless onboarding – Sign in with email and social accounts, or even bring your own web3 wallet.
• Universal accounts – Connect to all chains and apps instantly with a single global wallet account.
• Cross-app spending – Bring your items, inventory, history, and buying power with you across every app.
• Smart sessions – Onchain smart wallet policies enable pre-approved microtransactions and secure high-value transactions.
• Security and recovery – Designed from ground up to ensure users may always self-custody their wallet even under extreme failure scenarios.
• Open source – Open & verifiable to ensure your building blocks are secure by design, extensible and always available.
• Your brand – It’s your ecosystem, your brand, and your users. Whitelabel, customize, and extend the user experience.

This solution ensures that every app in an ecosystem benefits from shared liquidity, shared user bases, and a frictionless onboarding flow. Learn more about how to integrate Ecosystem Wallets into your web3 experience.

2. Chain abstraction: 1-click onchain transactions across any chain, any token, any wallet

Tap into the entire buying power of all users on web3 with a simple cross-chain SDK that works on every wallet (including MetaMask).

The expansion of EVM-compatible blockchains has created a fragmented landscape where liquidity is scattered, transactions are cumbersome, and users must navigate complex bridges and swaps just to perform simple transactions onchain. Sequence’s chain abstraction SDK eliminates these roadblocks, making all chains feel like one, enabling seamless payments, and unlocking a new era of frictionless interoperability for both users and developers.

• Universal buying power – Users can buy assets on any chain, with any currency, with any wallet, with just one-click.
• All wallets – Compatible with all wallets including Metamask, Wallet Connect, EOAs and smart contract wallets.
• Seamless cross-chain transactions – Users pay with assets from any wallet, and from any chain.
• Lightweight SDK integration – Developers integrate frictionless multi-chain transactions into existing wallet solutions.
• Intelligent liquidity routing – Optimizes for best transaction paths across chains.

By combining chain abstraction with our industry-leading account abstraction, indexing, and transaction technology, Sequence ensures that developers can build at scale, and users can interact effortlessly across the entire Ethereum ecosystem. We are so excited to introduce effortless cross-chain transactions, unified liquidity, and frictionless user experiences across the entire Ethereum ecosystem.

3. Ecosystem Manager: full visibility for chains and publishers

An admin portal for tracking wallets, users, transactions, and ecosystem activity.

For chains and ecosystems, managing a web3-powered experience requires visibility and control over user interactions. Ecosystem Manager is our new admin dashboard that gives projects insights into onchain transactions, user activity, and wallet engagement in real time.

• User growth and retention tracking: Monitor how users interact with wallets and applications over time.
• Transaction analytics: Track transaction volumes, spending behavior, and monetization trends.
• Chain-wide developer and app insights: Understand which projects are driving engagement and where liquidity is flowing.

To be released in the coming months, Ecosystem Manager is the foundation of web3 ecosystem intelligence - giving chains and developers the data they need to scale.

4. Sequence Marketplaces: instantly launch custom marketplaces

A completely rebuilt marketplace solution with improved performance, cross-chain compatibility, and a one-click connection to all major aggregated marketplaces.

Web3 marketplaces should be as seamless as web2 e-commerce - with liquidity, ease of use, and deep integration options. The upgraded Sequence Marketplaces make it effortless for developers to launch, customize, and scale compliant in-game and app-based economies.

• One-click aggregated marketplace: Instantly deploy a marketplace from Sequence Builder with access to OpenSea, Magic Eden, Rarible, OKX, and more.
• Seamless asset discovery and trading: Let users buy, sell, and browse digital goods with built-in liquidity.
• Auction and secondary market support: Enable real-time bidding and dynamic resale mechanics.
• Open-source boilerplates: Get started quickly with a complete solution, or fork + extend as much as you like.
• Marketplace SDK: The same functionality with an SDK to embed directly into web, mobile, Unreal, or Unity applications.

This update makes web3 marketplaces as intuitive and powerful as their web2 counterparts while preserving the benefits of true digital ownership.

5. Sequence Indexer: the best alternative to SimpleHash

A high-performance, multi-chain indexer that delivers real-time, reliable, and future-proof access to onchain data.

SimpleHash shutdown: Switch to Sequence Indexer

Querying blockchain data is essential for wallets, apps, games, marketplaces, and DeFi, but existing solutions are fragmented, slow, and unreliable. Sequence Indexer provides a unified, real-time API that enables seamless access to blockchain data - without the need for custom subgraphs, multiple endpoints, or unreliable indexing services.

• One API for all chains: Query wallet balances, transactions, NFTs, and smart contract events across 46+ blockchains with a single request. New chains are added each week.
• Lightning-fast retrieval: Optimized architecture ensures 3X faster response times of onchain data and metadata compared to alternatives.
• Real-time webhooks and event logs: Stay updated with instant notifications when users receive tokens, complete transactions, or interact with apps.
• Spam filtering and automatic contract detection: Prevent token clutter and automatically detect new smart contracts without backend updates.
• Open source: Maintain full control over your indexing infrastructure with self-hosting options.

Sequence Indexer is designed for anyone who needs real-time blockchain data – faster, more reliable, and built for long-term stability.

6. Sidekick: self-hosted backend companion for web3 apps and games

A secure and extensible containerized web3 backend companion that lets developers automate, query, and interact with blockchain data effortlessly.

Building in web3 requires constant interaction with blockchain data – retrieving balances, tracking transactions, handling smart contract events, and executing onchain actions. Traditionally, developers have had to manually integrate multiple APIs, manage complex queries, and handle infrastructure scaling themselves.

Sidekick is a companion backend service that runs along side your own app’s backend, acting as a simple and extensible web3 backend service that lives in your cloud. Written in Typescript, open source, and packaged as a Docker container with powerful integrations for both Google Cloud and AWS.

• Automated onchain actions: Define rules and scripts to execute transactions, send assets, or update smart contracts dynamically.
• Real-time webhooks and event listeners: Set up custom triggers for onchain activity, enabling instant responses to transactions, transfers, and mints.
• Programmatic querying: Automate access to wallet balances, transaction history, NFT metadata, and smart contract events via a single API.
• Multi-chain compatibility: Interact with all supported EVM chains in one request—no need for separate queries per chain.

Sidekick makes building web3 applications as seamless as integrating web2 backends - giving developers the power to scale without complexity, without managing servers, and without limits.

Building the future of web3 development

Web3’s future isn’t just about scaling chains, it’s about scaling applications.

Sequence provides the missing layer between developers, users and blockchains – making web3 development fast, flexible, and scalable. With these new releases, we’re giving chains, developers, and ecosystems the tools they need to build applications that drive real adoption.

Learn more about our future-proof web3 development platform at sequence.xyz and join our dev community on X and Discord!

Sequence makes building onchain simple. Developers and teams can launch, grow, and monetize apps with unified wallets, 1-click cross-chain transactions, and real-time data, all in a modular and secure stack. No more stitching together fragmented tools or battling poor user flows. Sequence is production-ready infrastructure that helps teams ship faster, onboard more users, and scale confidently. From chains and stablecoins to DeFi and gaming, Sequence powers developers and applications across the EVM ecosystem with billions in transaction volume and millions of users. Trusted by leaders in blockchain, Sequence powers today’s onchain apps and delivers future-proof infrastructure for tomorrow’s breakthroughs. Learn more at sequence.xyz _.