Not subject or susceptible to change. Public blockchains are considered immutable (or tamper-resistant) since no one can modify or delete existing entries.

Initial Coin Offering (ICO)
An Initial Coin Offering (also called an ICO) is a crowdfunding method in which a new blockchain-related project may sell in advance tokens, in exchange for upfront funding. ICOs may be used for developers of a new project to raise capital, but have been scrutinized as they were also a laying ground for exit scams and pump’n’dump schemes.

Initial Token Offering (ITO)
Initial Token Offerings are like ICOs (initial coin offerings), but different in that not every blockchain project that is tokenized has developed a new coin or token. A project built on the Ethereum network that is tokenized using ETH would be considered an ITO, as the project isn’t launching a new coin but just a new application on an already existing network.

Intentional Fork
Helps to reverse and repair the damages related to hacking or a catastrophic bug on a blockchain, by modifying the rules of the blockchain.

InterPlanetary File System (IPFS)
Is a distribution protocol that started as an open source project at Interplanetary Networks, and a peer-to-peer network for storing and sharing data in a distributed file system. It aims to help applications run faster, safer and with more transparency. IPFS allows information to be exchanged and interact without a single point of failure, while creating trust-less node interrelations.