Изучай Блокчейн

Introduction to blockchain technology

What a blockchain actually is, how blocks link together, why old records are so hard to change, and the different kinds of chain. You'll open real Vaulta blocks on an explorer. No account, no money. Explain a blockchain in plain words: a shared record that many computers keep and check together. Say what goes into a block and how a hash links each block to the one before it. Explain the difference between signing and encrypting, and which key does what. Open a block on a public explorer and read its number, ID, producer and time. Tell public, private, permissioned and permissionless chains apart, and say when a normal database is the better tool.

Модулей: 3 · 70 мин · Попробуй: 2

Key features, consensus and smart contracts

What decentralisation really buys you, how different chains agree on the next block, and how smart contracts run. You'll find a live Vaulta block producer and trace a contract on an explorer. No account, no money. Explain what decentralisation, transparency and immutability give you, and what each one costs. Describe proof of work, proof of stake and delegated proof of stake, and the trade-offs between them. Explain how Vaulta picks its 21 producers and how Savanna makes blocks final in about a second. Find a block producer that's in the top 21 right now on a public explorer. Describe what a smart contract is, how one runs, and the questions to ask before trusting one.