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When a Bitcoin transaction contains inputs that reference previous transaction outputs sent to different Bitcoin addresses, personally identifiable information of the user will leak into the blockchain in an uncontrolled manner. While undesirable, these transactions are frequently unavoidable due the natural
fragmentation of wallet balances over time.
This standard proposes a set of best practice guidelines which minimize the uncontrolled disclosure of personally identifiable information by defining standard forms for transactions containing heterogenous input scripts.
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