GoldRush guides

An explanation for Web3 developers on what Web3 wallets are and how to build them leveraging GoldRush's blockchain API.

In this guide, you'll learn how you can build a multi-chain portfolio tracker that fetches tokens across 100+ chains in less than 15 minutes.

Have you ever wondered how you can track the historic value of your crypto holdings for the last 30/60/90 days or longer? With the GoldRush API..

Ever wondered how you can build a Web3 wallet like Metamask or Coinbase wallet? GoldRush has endpoints that allow you to do it easily.

This comparison between GoldRush and RPC providers shows that GoldRush's API offers a more efficient solution for developers to access blockchain data.

Learn how to build a Web3 portfolio tracker to keep track of all a wallet's on-chain assets like ERC-20 tokens and NFTs!

Use the GoldRush API to easily fetch a complete list of token holders for different types of tokens across any supported blockchain.

Have you ever felt uneasy about the different dApps you've approved? In this guide, we'll build an 'approvals checker' with the GoldRush API.

Explore GoldRush's time buckets for efficient transaction retrieval. Utilize 15-minute intervals for precise, scalable data access.

Ever wondered how you can get the total transaction count, earliest, or latest transaction of an address? With GoldRush's brand new endpoint, it is easy.

A guide to the new v3 suite of Transaction APIs including paginating through large contracts with millions of transactions.

In this tutorial, you'll learn how to build a multi-chain block transactions explorer with the GoldRush API in less than 30 minutes.

Calculate your crypto cost basis and capital gains in minutes with GoldRush’s easy tool. Track transactions and simplify crypto taxes – get started now!

Explore the types of blockchain transactions and discover how Covalent delivers detailed historical on-chain data. Start exploring now!

Learn how to retrieve the earliest transaction history for an Ethereum address using GoldRush API. Start building your blockchain dApp today!

Retrieve Bitcoin balances and transactions with GoldRush API. Get detailed wallet data and transaction history for your Bitcoin application. Try it now!

Analyze your Ethereum gas consumption using the GoldRush API. Uncover transaction costs, optimize fees, and boost your blockchain efficiency. Start saving now!

Build a DIY crypto tax calculator using GoldRush API and Google Sheets. Track transactions, calculate gains and simplify your crypto tax filing.

This guide examines the internal architecture of a typical RPC node, including the client handler, core engine, router, decoders, and encoders.

GoldRush's Transactions API handles all the complexity of running nodes and indexing blockchain data so developers don't have to.

Learn how to get detailed historical blockchain transaction data for any Ethereum address using the GoldRush API.

Ever wondered how you can build something like Nansen's Smart Alerts, or the Whale Alert bot on Twitter? Look no further.

Learn to find transaction counts in blockchain blocks using the GoldRush API with this quick developer guide.

Utilize the GoldRush API to easily fetch gas estimates for specific events like erc-20 transfers, native transfers and Uniswap v3 swap events.

Getting all transactions on historical blocks on 200+ chains including fully decoded event logs.

Uncover the details of internal transactions in Ethereum, their role in smart contracts, and their impact on blockchain technology.

Learn all about account abstraction in the Ethereum ecosystem: what it is, benefits and use cases and more.

Explore ERC-4337 with our guide: Dive into top SDKs like Alchemy's, understand Account Abstraction, and enhance your dApp's user experience.

This guide teaches you how to efficiently filter and retrieve UserOps (account abstraction transactions) pertaining to a particular user.

This installment of our Account Abstraction series focuses on using the Paymaster contract in preparation to create a gasless dapp!

This tutorial will guide you through setting up a Hardhat project and deploying a CoinFlip smart contract on the blockchain to make an easy game.

Understanding the Sender Field Using Smart Contract Accounts in ERC 4337.

Curious about account abstraction? This article dives into the different types of Ethereum Accounts (EOAs vs. SCAs), account abstraction use cases and more.

This guide will walk through how developers can create UserOperations using the Stackup and Biconomy SDKs tailored for Account Abstraction.

Follow along in this detailed step-by-step tutorial to create a gasless dApp using Paymasters as part of our Account Abstraction guide series.

This guide explains Gwei and its use cases in the Ethereum network for gas fees and prices. Learn about the origin of Gwei and how gas is calculated!

Learn how to build a memecoin sniping bot in Solana - Part 1 : Setting up + establish the streaming connection via GoldRush

You don’t need a programming background to get information from an Ethereum contract address, but you do need to know where to look. Read to find out!

Build the "Fuel Gauge" for Account Abstraction. Monitor Paymaster balances and prevent gas failures using Covalent GoldRush

Learn how to build an early warning system on Monad using GoldRush API - Part 1

Learn to build a Hyperliquid liquidation data API with GoldRush - Part 3

Build a real-time sniper bot on Monad. Stream new DEX pairs with GoldRush, track liquidity, measure latency, and baseline launch signals before execution

Actual patterns whales, institutions, and smart money leave behind on-chain on your webapp

Master Ethereum PeerDAS with this hands-on guide. Explore DAS mechanics, KZG crypto, and use the PeerDAS Playground CLI for simulations

Use GoldRush Foundational API to pull Base wallet history, build hourly features, and run simple anomaly scores to surface suspicious DeFi activity.

Actual patterns whales, institutions, and smart money leave behind on-chain, and what those patterns really mean

Build the "UserOp Traffic Controller". Monitor real-time Paymaster interactions, analyze gas usage, and detect spikes using the GoldRush Wallet Activity API

Sybil Resistance (Part 3): Building a Fairer Future with On-Chain Gamification on Base with GoldRush

Part 1 of a 3-part guide: build a real-time DeFi exploit monitor on Base using GoldRush Streams, with wallet-based alerts that prepare you for AI detection.

caps, cooldown and dry-run, then execute guarded two-leg DEX swaps.

Learn how to track whale wallets on the Base blockchain using Covalent's GoldRush Streaming API.

Start tracking Base whale activity live. Part 1 of our series introduces the Covalent GoldRush Streaming API to build your on-chain intelligence system.

A practical, production-ready env that uses the GoldRush Streaming API to detect Sybils as they happen

Build a Sonic HFT loop: use Goldrush Streams for real-time on-chain data, keep clean prices in memory, and trigger a deterministic after-fee arbitrage signal.

Final part of a Solana memecoin sniper bot - piecing all the setup together

Anamoly Detection Dashboard on Solana (Part 2): Setting up the streaming connection and building the UI

Learn how to make your on-chain AI agent profitable on Base with GoldRush (part 2): Master cost-aware execution, real-time data, and PnL backfill analysis.

Learn how to build a memecoin sniping bot in Solana - Part 2 : Connect to Solana Network + streaming via Goldrush

Guide to build a real-time agent on Base using GoldRush Part One—connect streaming data, define a deterministic signal, and prep your pipeline for automation.

Real-time anomaly detection transforms Web3 security from reactive to proactive. By integrating Goldrush Streaming APIs and granular monitoring

Follow our detailed guide on integrating RainbowKit into your dApps. From setup to execution, learn everything you need for successful wallet integration.

Curious about how to integrate RainbowKit into your project? Follow our detailed guide on integrating RainbowKit into an NFT minting dApp.

The blockchain trilemma, architecture differences, and how modular blockchains enable scalability over monolithic design.

This guide will show you an easy way to calculate unrealized PnL and stay on top of your crypto assets. It includes a DIY spreadsheet template!

This guide provides an overview of Layer 2 blockchains, Ethereum's scalability challenges, and how L2s improve performance and drive adoption.

Learn how to check BTC wallet balances and track Bitcoin transactions easily using the GoldRush API for structured blockchain data.

A step-by-step guide on how to understand and calculate impermanent loss that takes place on AMMs, with specific considerations for UniswapV3.

In this tutorial, we'll guide you through the process of cloning UniswapV2 and also provide insights into how the UniswapV2 contract operates.

Explore Liquid Staking Derivatives (LSDs) that unlock liquidity and boost staking yields in Web3 markets. Learn how they revolutionize crypto staking.

Explore EIP-4844 proto-danksharding and its role in boosting Ethereum scalability with efficient data blobs. Learn more about this blockchain upgrade now.

Explore the differences between Ethereum and Solana. Learn about consensus, smart contracts, and scalability—find the best platform for your project.

This guide delves into the intricacies of deterministic wallets, providing an exhaustive understanding of their technical details, management tips, and more.

ZK rollups are a type layer 2 scaling solution designed to increase the throughput of blockchain networks without compromising security.

Zk rollups are an exciting innovation, but they come with challenges surrounding data availability, which is crucial for verifying transactions. Let's explore.

This article explores Decentralized Identifiers (DIDs), including their definition, key benefits, and practical use cases.

This guide explains what hashing algorithms are, detailing their fundamental principles, and common uses in data security and integrity.

Explore the key blockchain consensus mechanisms, and learn how they ensure security, scalability, and decentralization in blockchain networks.

Learn how public key cryptography secures data, authenticates users, and protects online transactions.

At its core, intent-based systems shift focus from explicit onchain instructions to the underlying intentions behind transactions, improving user experience.

In this guide, you'll learn how to implement an ERC1363 smart contract and integrate it with a voting contract.

Discover ERC-1363, the Payable Token Standard, enabling seamless token transfers and function calls within smart contracts.

Discover the top Web3 programming languages for blockchain developers and how each language tailors to different blockchain platforms and project needs

Learn to read blockchain data using JSON-RPC with this comprehensive guide on its structure, and workflow.

Learn about Ethereum accounts, including their types, how to manage them, and security tips. Grasp the differences between private keys, public keys, and more.

RPC nodes act as messengers facilitating requests and responses between nodes on a blockchain network. They are essential to be able to build on blockchains.

Learn about the concept of abstraction in Web3 and how blockchains are becoming increasingly invisible to users as UI improves.

GoldRush provides a unified API for Web3 that bridges the gap between blockchain networks and developers. Learn more.

Check our guide on Etherscan API alternatives and learn why GoldRush's multi-chain support and ease of integration make it a valuable tool for web3 development.

This guide will walk you through setting up and using the GoldRush API with the Viem framework, enhancing your blockchain projects with minimal API calls.

The GoldRush SDK is a one-stop solution for access to blockchain data, including token balances, historical transactions, NFT metadata and more.

This guide focuses on leveraging the GoldRush API to convert Ethereum Name Service (ENS) domains into corresponding wallet addresses.

This guide explores the concept of vanity addresses on the blockchain.

This guide dives into the details of Smart Contract ABIs (Application Binary Interfaces) and how to interact with them.

This guide aims to simplify the intricate relationship between AI and cryptocurrencies, showcasing the potential of these technologies.

Understand the difference between DeFi and CeFi, the different types of DeFi taxes, and what kinds of data are required for DeFi tax reporting.

This comprehensive guide equips developers with the essentials to build on modular blockchains, emphasizing scalability, interoperability, and customization.

This guide walks you through multi-signature contracts, how they work, their role in improving the security of Web3, and popular examples like Safe and Argent.

This guide provides a deep technical comparison of JSON-RPC and gRPC for blockchain use cases, examining serialization, authentication, code generations & more.

This guide teaches you how to clone the UniswapV2 frontend and connect it with a deployed smart contract on any EVM blockchain.

In this hands-on guide, you'll learn how to implement a multi-signature contract by following along step-by-step with detailed instructions.

In this guide, we'll explore the modularities of blockchains, from the standard monolithic designs to the newer modular ones and intermediaries.

Confused about Ethereum clients? Erigon vs Geth: We break down the key differences to help you choose the right one for you

This step-by-step guide teaches you how to create a vault that follows the ERC-4626 vault standard. Understand how yield-bearing tokens work under the hood.

In this comprehensive guide, we dive into the core concepts and practical use cases of ERC-4626, bridging the gap between theory and pragmatic usage.

This guide explains Merkle Patricia Tries in depth and how they solve for data storage challenges and data integrity on the Ethereum blockchain.

This guide walks you through Decentralized Autonomous Organizations (DAOs) and how they work, including the blockchain infrastructure and voting mechanisms.