Output Count

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The output count is a 1-9 byte field representing a positive integer in VarInt format. It indicates the number of outputs created by the transaction.

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Note that the number of spendable outputs that can be created in a transaction is limited to approimately. 4.3 billion, despite the fact that the Out-counter field can accommodate a much larger value. This limit is due to the fixed 4-byte length of the Previous TxOut-Index field in the transaction inputs, as explained in the previous section.