Blockchain is a distributed ledger technology that securely stores data on multiple computers, forming an immutable and transparent network. Its features include: distributed, tamper-proof, secure, transparent, traceable and censorship-resistant. It has wide applications in finance, supply chain management, healthcare and voting.
What is blockchain?
Blockchain is a distributed ledger technology that forms a secure, transparent and tamper-proof network by storing data on multiple computers.
Detailed explanation:
-
Distributed ledger: Blockchain is not a central database, but records data on multiple computers called "blocks". Each block contains a set of transactions and hashes pointing to previous blocks.
-
Immutable: Once a block is added to the blockchain, it is difficult to modify or delete. This is because each block contains the hash of the previous block, so any change invalidates the hashes of all subsequent blocks in the chain.
-
Security: Blockchain ensures data security by using cryptographic hash functions and asymmetric encryption. Hash functions ensure the uniqueness and integrity of data, while encryption prevents unauthorized access.
-
Transparency: Blockchain data is open to all network participants. This means anyone can view and verify transactions, which increases transparency and accountability.
Features of blockchain:
- Distributed
- Immutable
- Secure
- Transparent
- Traceable
- Anti-censorship
Blockchain application:
Blockchain in There are a wide range of applications across various industries, including:
- Finance: cryptocurrencies, digital payments
- Supply chain management: tracking and verifying goods
- Healthcare: securely storing and sharing medical records
- Voting: transparent and secure elections Process
The above is the detailed content of What is the complete explanation of blockchain?. For more information, please follow other related articles on the PHP Chinese website!