Hacking is the process of using a computer to manipulate another computer or computer system in an unauthorized fashion.
Hal Finney was a cryptographer and programmer who pioneered Bitcoin’s development and worked with Satoshi Nakamoto.
An event in which the total rewards per confirmed block halves.
A hard cap is the absolute maximum supply of a digital asset.
A type of protocol change that validates all previously invalid transactions, and invalidates all previously valid transactions.
A hardware security module is a type of computing device that secures digital keys and encrypts data.
A hardware wallet is a wallet for cryptocurrencies that usually resemble a USB stick.
A hash is the output result of a hashing algorithm, which creates a unique, fixed-length string to encrypt and secure a certain selection of arbitrary data.
Any function used to map data of arbitrary size to data of a fixed size. *see Cryptographic Hash Function.
A unit of measurement for the amount of computing power being consumed by the network to continuously operate.
Hidden cap is an unknown limit to the amount of money a team elects to receive from investors in its initial coin offering (ICO). The purpose of a hidden cap is to even the playing field by letting smaller investors put in money, without the large investors forming an accurate understanding of the total cap and adjusting their investment as a result.
A wallet that uses Hierarchical Deterministic (HD) protocol to support the generation of crypto-wallets from a single master seed using 12 mnemonic phrases. *see Deterministic Wallet.
A type of passive investment strategy where you hold an investment for a long period of time, regardless of any changes in the price or markets. The term first became famous due to a typo made in a Bitcoin forum, and the term is now commonly expanded to stand for “Hold On for Dear Life.”
Honeyminer is a cryptocurrency mining app available for download on multiple devices.
A wallet managed by a third-party service.
The online storage of private keys allowing for quicker access to cryptocurrencies. *see Cold Storage.
A cryptocurrency wallet that is connected to the internet for hot storage of cryptoassets, as opposed to an offline, cold wallet with cold storage. *See Cold Wallet.
A test used to determine whether or not an asset is a security.
A hybrid PoW/PoS allows for both proof-of-stake and proof-of-work as consensus distribution algorithms on the network. This approach aims to bring together the security of PoW consensus and the governance and energy efficiency of PoS.
Hyperledger is an umbrella project of open source blockchains and blockchain-related tools started by the Linux Foundation in 2015 to support the collaborative development of blockchain-based distributed ledgers.