Blockchain Introduction
A blockchain is a distributed ledger that maintains a continuously growing list of ordered records, called "blocks", that are linked together and secured using cryptography.
Last updated
A blockchain is a distributed ledger that maintains a continuously growing list of ordered records, called "blocks", that are linked together and secured using cryptography.
Last updated
A blockchain is a distributed ledger with growing lists of records (blocks) that are securely linked together via cryptographic hashes. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree, where data nodes are represented by leaves). Since each block contains information about the previous block, they effectively form a chain (compare linked list data structure), with each additional block linking to the ones before it. Consequently, blockchain transactions are irreversible in that, once they are recorded, the data in any given block cannot be altered retroactively without altering all subsequent blocks.
Blocks are data bundles where data is permanently recorded on a blockchain.
A block records:
Transactions
Timestamp
Hash of the previous block
Nonce
Bitcoin is an innovative payment network and a new kind of money.
Ethereum is the community-run technology powering the cryptocurrency ether (ETH) and thousands of decentralized applications.
Chainlink is the decentralized computing platform powering the verifiable web.
