✨Blockchains are chains of blocks that contain information and are tamper-proof.
🔒Blockchains use hashing and proof-of-work mechanisms to ensure security.
🌐Blockchains are distributed ledgers, allowing anyone to join the network.
💡Blockchains have various applications, including cryptocurrencies and smart contracts.
🚀Blockchains are constantly evolving and can be implemented using various technologies.
What is a blockchain?
—A blockchain is a chain of blocks that store information. It is secure and tamper-proof.
How does a blockchain work?
—Each block has a unique hash and the hash of the previous block, creating a chain. It uses hashing and proof-of-work mechanisms for security.
What are the benefits of using a blockchain?
—Blockchains are secure, distributed, and can have various applications such as cryptocurrencies and smart contracts.
How can I join a blockchain network?
—Blockchain networks are open to anyone. You can join by getting a full copy of the blockchain.
Can a blockchain be tampered with?
—Tampering with a blockchain is almost impossible due to its security mechanisms and distributed nature.
00:00Blockchains are chains of blocks containing information.
00:15Blockchains were originally used to timestamp digital documents.
00:37Bitcoin was the first application of blockchain technology.
01:45Each block contains data, a unique hash, and the hash of the previous block.
03:08Proof-of-work slows down the creation of new blocks and prevents tampering.
03:48Blockchains are secured through the use of hashes and a distributed network.
04:41Tampering with a blockchain requires changing all previous blocks and controlling the majority of the network.
05:20Blockchain technology has various applications beyond cryptocurrencies.
