Elon Musk talks Crypto：HODL

Gwei

The denomination used in defining the cost of gas in transactions involving Ether.

Hacking

Hacking is the process of using a computer to manipulate another computer or computer system in an unauthorized fashion.

Hal Finney

Hal Finney was a cryptographer and programmer who pioneered Bitcoin’s development and worked with Satoshi Nakamoto.

Hard Cap

A hard cap is the absolute maximum supply of a digital asset.

Hard Fork (Blockchain)

A type of protocol change that validates all previously invalid transactions, and invalidates all previously valid transactions.

Hard Fork Combinator

A hard fork combinator (first designed by IOHK) is a tool to combine protocols specifically on the Cardano blockchain after a hard fork has occurred.

Hard Peg

A hard peg is an exchange rate policy, where a currency is set at a fixed rate against another currency.

Hardware Security Module

A hardware security module is a type of computing device that secures digital keys and encrypts data.

Hardware Wallet

A hardware wallet is a wallet for cryptocurrencies that usually resemble a USB stick.

Hash

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.

Hash Function

Any function used to map data of arbitrary size to data of a fixed size. *see Cryptographic Hash Function.

Hash Power / Hash Rate

A unit of measurement for the amount of computing power being consumed by the network to continuously operate.

Hashed Timelock Contract (HTLC)

A hashed timelock contract (HTLC) is an agreement between two parties that requires no trust between two users by offering special features to reduce risk.

Hashgraph Consensus Mechanism

The hashgraph consensus is an advanced and up-to-date version of the technology that enables consensus mechanisms.

Haskell Programming Language

The Haskell programming language is a standardized, general-purpose, statically-typed, purely functional programming language that came into existence in 1990.

Hedge Contract

A hedge contract is a form of insurance that investors use to hedge against the risk of financial loss. Typically, a hedge is designed to protect against price fluctuations in the market.

Hedge Fund

A hedge fund is pooled investment fund that employs a number of investment strategies in a variety of liquid asset classes.

Hidden Cap

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.

Hierarchical Deterministic Wallet (HD Wallet)

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.

Higher High

A higher high is when the price of a cryptocurrency closes higher than the previous day, which itself closed at a high.

Higher Low

A higher low is when the price of a cryptocurrency closes at a level that is higher than the close of the previous day.

Honeyminer

Honeyminer is a cryptocurrency mining app available for download on multiple devices.

HODL

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.”