Null Data (OP_RETURN) Transaction
This definition comes from the technical glossary.
Definition
A standard transaction type which allows adding 40 bytes of arbitrary data to the block chain up to once per transaction.
Synonyms
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Null data transaction
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OP_RETURN transaction
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Data carrier transaction
Not To Be Confused With
- OP_RETURN (an op code used in one of the outputs in an OP_RETURN transaction)
Links
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Null data transaction — Bitcoin Developer Guide