(noun): A fixed-length string of characters generated by a cryptographic algorithm, used to uniquely represent data.

Example: The hash of the file ensures its integrity and can be used to verify if it has been tampered with.

Hard fork

(noun): A significant and permanent divergence in a blockchain network, resulting in two separate chains with different rules and protocols.

Example: The cryptocurrency community debated the implications of the upcoming hard fork, which could lead to a split in the network.

Hash function

(noun): A mathematical function that takes an input and produces a fixed-size string of characters, known as a hash.

Example: The hash function converts the user’s password into an encrypted hash, protecting their sensitive information.


(noun): A process in some cryptocurrencies, such as Bitcoin, where the reward for mining new blocks is reduced by half at regular intervals.

Example: Bitcoin experiences a halving event approximately every four years, reducing the rate at which new coins are created.


(noun): An open-source blockchain framework and platform designed for developing enterprise-level applications.

Example: The company implemented Hyperledger technology to streamline their supply chain operations and enhance transparency.


(verb): A slang term in the cryptocurrency community that means to hold onto a cryptocurrency asset for the long term, rather than selling or trading it.

Example: Despite market fluctuations, he decided to HODL his Bitcoin investment and wait for potential future gains.


(noun): The unauthorized access or manipulation of computer systems or networks to gain information or disrupt normal operations.

Example: The cybersecurity team worked tirelessly to prevent hacking attempts and protect sensitive user data.

Hot wallet

(noun): A cryptocurrency wallet that is connected to the internet and used for frequent transactions.

Example: He kept a small amount of Bitcoin in his hot wallet for day-to-day purchases and online transactions.


(noun): The computational power of a mining device or network, measuring the number of hashes that can be calculated per second.

Example: The increase in miners joining the network led to a higher hashrate, resulting in increased security and transaction speed.