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

**Confirmation** is the [[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]] transaction has been verified by the network. This happens through a process known as [[dido:public:ra:xapend:xapend.a_glossary:m:mining|mining]], in a [[dido:public:ra:xapend:xapend.a_glossary:p:proof_of_work|proof-of-work]] system (e.g. [[dido:public:ra:xapend:xapend.a_glossary:b:bitcoin|Bitcoin]]). Once a transaction is confirmed, it cannot be reversed or double spent. The more confirmations a transaction has, the harder it becomes to perform a [[dido:public:ra:xapend:xapend.a_glossary:d:double_spend|double spend]] attack..

Source: [[https://hackernoon.com/blockchain-dictionary-f4d098c9ef89]]


/**=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
/* To add a discussion page to this page, comment out the line that says 
  ~~DISCUSSION:off~~
*/
~~DISCUSSION:on|Outstanding Issues~~
~~DISCUSSION:off~~