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Update and rename 3_5_Sending_a_Raw_Transaction_with_an_OP_RETURN.md to 4_3_Sending_a_Raw_Transaction_with_an_OP_RETURN.md

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Shannon Appelcline 2017-03-23 14:05:25 -07:00 committed by GitHub
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3_5_Sending_a_Raw_Transaction_with_an_OP_RETURN.md → 4_3_Sending_a_Raw_Transaction_with_an_OP_RETURN.md
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# 3.5: Sending a Raw Transaction with an OP_RETURN
[[maybe put this in a complex transaction section with RBF and child-funds-parent]]
> **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.
A P2PKH transaction is one of the simplest forms of Bitcoin transaction... except perhaps the OP_RETURN. That's because an OP_RETURN is basically a null: an invalid output. Why would you use one? To store data on the blockchain: up to 80 bytes.