Blockchain
By CoinGecko | Updated on Mar 03, 2020
A digital ledger where data is recorded in a chronological order. In Bitcoin's case, it is a decentralized, public ledger which contains transactional information. Users can verify that transactions have occured simply by looking at the data that is publicized on the Bitcoin network.
In a blockchain, the next piece of information that will be added is always linked to a previous, already confirmed information of the blockchain through the use of a hash which describes the past content. With the hash, every block of information in a blockchain becomes referenced with one another, and cannot be easily swapped out, thereby qualifying as an immutable ledger.
Related Terms
Lightning Network
It is the "second layer" or an off-chain of payment protocol that operates on top of a blockchain. Payments on this network do not need block confirmation and it will be instant.
Difficulty
A relative measure on how difficult it is to correctly guess a new block
Full Node
Full Nodes are computers that verify the set of rules that are built into the protocols of a given cryptocurrency.
Salt (cryptography)
In cryptography, a salt is the additional random input that is added to password or passphrase to make the password hash unique. It prevents from the hashed output password to be cracked so easily by the hacker.
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