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This template will no longer automatically categorize articles as candidates to move to Wiktionary. In cryptocurrencies , an unspent transaction output UTXO is an output of a blockchain transaction that has not been spent, i.
Bitcoin is the most famous example of a cryptocurrency that uses the UTXO model. Outputs are a superset of UTXOs. Bitcoin UTXO lifespans have been studied. In the case of a valid blockchain transaction, unspent outputs and only unspent outputs may be used to effect further transactions. The requirement that only unspent outputs may be used in further transactions is necessary to prevent double spending and fraud. For this reason, inputs on a blockchain are deleted when a transaction occurs, whilst at the same time, outputs are created in the form of UTXOs.
These unspent transaction outputs may be used by the holders of private keys ; for example, persons with cryptocurrency wallets for the purpose of future transactions. From Wikipedia, the free encyclopedia. This article has multiple issues. Please help improve it or discuss these issues on the talk page. Learn how and when to remove these template messages.
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March Learn how and when to remove this template message. This article may be confusing or unclear to readers. Please help us clarify the article. There might be a discussion about this on the talk page. This article appears to be a dictionary definition. Please rewrite it to present the subject from an encyclopedic point of view. If it cannot be turned into a full encyclopedia article in the near future, consider moving it to Wiktionary.
Steps for moving to Wiktionary: Check that this article meets Wiktionary's criteria for inclusion. Check that Wiktionary does not have an article on this word or phrase, as verified using the search page. Get the definition here". Bitcoin Unspent Output Transaction ". Proof-of-authority Proof-of-space Proof-of-stake proof-of-work.
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