--- title: "BuildBear (@BuildBear) | Hashnode" description: "Test your DApps at Scale. Create your private Testnet (forked from any Mainnet EVM Chain), with your own Explorer, Faucet and RPC" url: "https://hashnode.com/@BuildBear" --- @BuildBear # BuildBear @BuildBear · Joined May 2023 Test your DApps at Scale. Create your private Testnet (forked from any Mainnet EVM Chain), with your own Explorer, Faucet and RPC [Website](https://www.buildbear.io/) ### [The Ultimate Guide to Web3.py for Developers](https://buildbear.hashnode.dev/the-ultimate-guide-to-web3py-for-developers?utm_source=hashnode&utm_medium=feed) For Python developers looking to interact with Ethereum, web3.py is the go-to library. This guide shows you how to use web3.py with BuildBear RPC to test, deploy, and manage dApps effortlessly within a realistic testing environment. We’ll also demons... 5 min read · [buildbear.hashnode.dev](https://buildbear.hashnode.dev/the-ultimate-guide-to-web3py-for-developers?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/the-ultimate-guide-to-web3py-for-developers/67481edd2ba9fb95c4b74c0f) [Nov 28, 2024](https://hashnode.com/posts/the-ultimate-guide-to-web3py-for-developers/67481edd2ba9fb95c4b74c0f) ### [EOF Explained: What Developers Need to Know](https://buildbear.hashnode.dev/eof-explained-what-developers-need-to-know?utm_source=hashnode&utm_medium=feed) Ethereum has undergone numerous upgrades recently, with the Ethereum Virtual Machine remaining fundamental to its architecture. In the upcoming Pectra upgrade, the core development team of Ethereum has announced the agreement on the inclusion of EVM ... 5 min read · [buildbear.hashnode.dev](https://buildbear.hashnode.dev/eof-explained-what-developers-need-to-know?utm_source=hashnode&utm_medium=feed) [Oct 20, 2024](https://hashnode.com/posts/eof-explained-what-developers-need-to-know/67173df025375b5b05634cbc) ### [How to Use Chainlink VRF | Beginner Friendly](https://buildbear.hashnode.dev/how-to-use-chainlink-vrf-beginner-friendly?utm_source=hashnode&utm_medium=feed) Chainlink Verifiable Random Function (VRF) is a random number generator for smart contracts. Developers can use Chainlink VRF on BuildBear Sandbox to build and test smart contracts for any decentralized applications that rely on unpredictable outcome... 6 min read · [buildbear.hashnode.dev](https://buildbear.hashnode.dev/how-to-use-chainlink-vrf-beginner-friendly?utm_source=hashnode&utm_medium=feed) [Aug 30, 2024](https://hashnode.com/posts/how-to-use-chainlink-vrf-beginner-friendly/66d1ab7e20532e8f1d615050) ### [A Deep Dive into ERC-7683 for Cross-Chain Intent](https://buildbear.hashnode.dev/a-deep-dive-into-erc-7683-for-cross-chain-intent-1?utm_source=hashnode&utm_medium=feed) The ecosystem has become more fragmented with the proliferation of multiple blockchains (rollups and appchains). Blockchain interoperability is essential to communicating, transferring assets, and connecting across these diverse blockchain networks. ... 7 min read · [buildbear.hashnode.dev](https://buildbear.hashnode.dev/a-deep-dive-into-erc-7683-for-cross-chain-intent-1?utm_source=hashnode&utm_medium=feed) [Aug 7, 2024](https://hashnode.com/posts/a-deep-dive-into-erc-7683-for-cross-chain-intent-1/66b3078d53221b36460ca6e8) ### [EIP-3074 and EIP-7702: A New Era to Account Abstraction](https://buildbear.hashnode.dev/eip-3074-and-eip-7702-a-new-era-to-account-abstraction?utm_source=hashnode&utm_medium=feed) The Ethereum Account Abstraction roadmap kicked off in 2023 and has since become a prominent subject, especially with the recent announcement of EIP-3074’s inclusion in the upcoming Ethereum Hard fork (Pectra). This article explores how the Pectra up... 7 min read · [buildbear.hashnode.dev](https://buildbear.hashnode.dev/eip-3074-and-eip-7702-a-new-era-to-account-abstraction?utm_source=hashnode&utm_medium=feed) [Aug 5, 2024](https://hashnode.com/posts/eip-3074-and-eip-7702-a-new-era-to-account-abstraction/66b0773796be713c43340931)