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## Testnets We're going to explore how to use testnets to deploy smart contracts and make transactions. ### Tenderly We'll be using a virtual testnet tool called "Tenderly." This is our preferred method for interacting with a testnet. ### Why Tenderly? Using a virtual testnet is our preferred method for interacting with a testnet. Obtaining actual testnet funds can be very challenging. ### Testnet Transactions (Optional) We'll also take a look at what sending a transaction on a testnet looks like. This section is optional. If you are unable to obtain testnet funds, don't worry. You can still learn everything you need to know by using Tenderly. ### Testnet Exploration (Optional) We'll explore what a different explorer looks like, such as Etherscan or Blockscout. This section is optional. ### Summary The testnet sections are optional throughout Cyfrin Updraft. If you want to experience it firsthand, we highly recommend using Tenderly.
Explore testnets and blockchain explorers with optional hands-on practice—Tenderly makes testing smart contracts simple and fund-free.
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Course Overview
About the course
Blockchain fundamentals
Introduction to smart contract gas
Introduction to wallets
Transaction signatures
Smart contracts
Advanced gas concepts
Security researcher
$49,999 - $120,000 (avg. salary)
Web3 developer
$60,000 - $150,000 (avg. salary)
Smart Contract Engineer
$100,000 - $150,000 (avg. salary)
Smart Contract Auditor
$100,000 - $200,000 (avg. salary)
Web3 Developer Relations
$85,000 - $125,000 (avg. salary)
Last updated on May 27, 2025
Duration: 3h 11min
Certification: Blockchain Basics
This proficiency exam is designed to confirm your understanding of all key concepts and learnings presented in the course material. You will have 45 minutes to answer 30 questions and score 18 to pass and earn a Certificate of Completion.
Course Overview
About the course
Blockchain fundamentals
Introduction to smart contract gas
Introduction to wallets
Transaction signatures
Smart contracts
Advanced gas concepts
Security researcher
$49,999 - $120,000 (avg. salary)
Web3 developer
$60,000 - $150,000 (avg. salary)
Smart Contract Engineer
$100,000 - $150,000 (avg. salary)
Smart Contract Auditor
$100,000 - $200,000 (avg. salary)
Web3 Developer Relations
$85,000 - $125,000 (avg. salary)
Last updated on May 27, 2025