Intermediate Topic 20 of 51 Emerging & Frontier Topics
Smart Contracts
Programs executing on a blockchain.
How it works
Contracts are programs deployed on a blockchain (Solidity on Ethereum) that run deterministically and hold funds; code is immutable once deployed.
Where it is used
DeFi, tokens, NFTs.
Common pitfall
Bugs are irreversible and exploitable (The DAO hack); audit thoroughly.
Where it fits in the course
Smart Contracts is topic 20 of 51 in Emerging & Frontier Topics, rated Intermediate. It follows Proof of Work and Proof of Stake. The next topic is Cryptocurrencies.
Practice and explore
- Open the interactive lesson, with a mini quiz.
- Take the Emerging & Frontier Topics quiz.
How to study this topic
- Read the explanation above and restate the definition in your own words.
- Open the interactive lesson and answer its mini quiz.
- Read the common pitfall, then write a short example that avoids it.
- Check your understanding in the Emerging & Frontier Topics quiz, and revisit the topic if you miss a question.
Frequently asked questions
What is Smart Contracts?
Programs executing on a blockchain. It belongs to Emerging & Frontier Topics and is an intermediate-level topic.
Where do people use Smart Contracts?
DeFi, tokens, NFTs.
What is the most common mistake with Smart Contracts?
Bugs are irreversible and exploitable (The DAO hack); audit thoroughly.
What should I learn before this topic?
Start with Proof of Work and Proof of Stake, the topic just before it in Emerging & Frontier Topics.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Emerging & Frontier Topics quiz.
Is Smart Contracts hard to learn?
It is an Intermediate topic. Be comfortable with the Beginner topics in this area first, then read the common pitfall carefully, since it is where most mistakes happen.
How long does it take to learn Smart Contracts?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Smart Contracts?
Proof of Work and Proof of Stake, Cryptocurrencies, Blockchain are closely connected. The full list is in the related topics section of this page.
What should I study after Smart Contracts?
Continue with Cryptocurrencies, the next topic in Emerging & Frontier Topics.
Related topics
- Proof of Work and Proof of Stake (Emerging & Frontier Topics)
- Cryptocurrencies (Emerging & Frontier Topics)
- Blockchain (Emerging & Frontier Topics)
- Decentralized Applications (Emerging & Frontier Topics)
- Smart Home Systems (Mobile, Embedded & IoT)