===== Immutable =====
[[dido:public:ra:xapend:xapend.a_glossary:start| Return to Glossary ]]

**Immutable** is an unchanging over time or unable to be changed((
"Immutable", Lexico, Oxford English Dictionary, 28 June 2018,
)). The immutability property of a [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]] refers to the fact that any data once written on the blockchain cannot be changed. ((
"Blockchain Technology Explained: Introduction, Meaning, and Applications", Mayank Pratap, 1 August 2018, Hackernoon,
[[https://hackernoon.com/blockchain-technology-explained-introduction-meaning-and-applications-edbd6759a2b2]]
))