Kraken, Rainbow, Backpack & Infinex: wallet data, unlocked by Zerion
Kraken
Global crypto exchange for spot/derivatives, expanding institutional services.
Challenge
Kraken built a self-custody wallet to help its users connect to the decentralized web. They needed a simple way to show users’ tokens with price charts and other data. They also needed to show users’ transaction history across the Ethereum mainnet, Polygon, Arbitrum, Optimism, Base, and Blast. Given the size of their user base, they needed to ensure reliability at scale without running their infrastructure.
Solution
Kraken chose Zerion API, using a single call to fetch all token positions and transactions across Ethereum and their required Layer-2 networks. Another Zerion’s endpoint added charts for any token from these chains. While Zerion handles the data infrastructure, Kraken focused on providing simple, safe, and private self-custodial experience to its users.
Rainbow
Fun, secure Ethereum wallet for NFTs and multi-chain assets.
Challenge
Rainbow is a fun, simple, and secure crypto wallet for everyday use. They needed a way to display users' transaction histories, token balances, and detailed holdings without running blockchain indexers across multiple chains.
Solution
Rainbow integrated Zerion API to effortlessly retrieve wallet transaction histories and both simple and complex token positions. Zerion's endpoints provided reliable, real-time data, enabling Rainbow to deliver a streamlined and engaging experience to their users without additional infrastructure complexity.
Infinex
User-friendly DeFi app from the Synthetix founder; one interface for many protocols.
Challenge
Infinex needed real-time, reliable cross-chain data to power a seamless trading and portfolio experience, but managing multiple chain integrations was slow, costly, and complex.
Solution
Zerion’s Portfolio & Webhook APIs deliver unified multi-chain data, instant updates, and enterprise-grade reliability, therefore cutting engineering overhead and enabling Infinex to focus on building a best-in-class crypto UX.
Backpack
Self-custodial wallet + exchange across Solana, EVM, and BTC.
Challenge
Backpack required accurate transaction histories and token balances to deliver clear and engaging wallet insights. They needed this data across multiple chains yet didn’t want to run their own extensive indexing infrastructure.
Solution
Backpack integrated Zerion API to quickly fetch detailed transaction histories and token balances across multiple chains, ensuring accurate and seamless user experience. Backpack also quickly added support for new hot chains, such as the Monad testnet.
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