<p>If this is what you are proposing:</p>

<pre><code>Address A: 1Axyz...
Address B: 1Bxyz...
Address C: 1Cxyz...

Tx1

A -&gt; Multisig requiring 1 of 2 signatures from pubkeys of B &amp; C

Tx2

Tx1 output 0 -&gt; OP_RETURN
</code></pre>

<p>Then yes, that's totally legal on the blockchain. Not sure why you would want to do it, though.</p>

CC BY-SA 3.0
2016-01-26T20:12:08.610Z
@IgorBarinov Huh? I think you got cut off there.
Nick ODell
CC BY-SA 3.0
2016-01-26T23:08:16.177Z
Thanks! So here is the idea: Company B splits an "access key" which can be used to access a file from company’s http server into two parts. One part has been sent to company A using regular communication, e.g. email. We need to prove that both Company A approved to accept this request and client approved to share his file from company B to company A.
Igor Barinov
CC BY-SA 3.0
2016-01-26T23:08:35.403Z
Company A created and funded a wallet to accept this key. Company B and it's client both sign a transaction with part of access key in op_return. Company A knows that the client gave access for this file by signing a transaction and gets second part of the key from the blockchain transaction.
Igor Barinov
CC BY-SA 3.0
2016-01-26T16:22:32.503Z
2016-01-26T19:48:01.393Z
2016-01-26T19:48:01.393Z
morsecoder
<p>Let's say I have wallets A,B,C.
A funds multisig address with B and C.
B &amp; C show keys, get input and spent it to OP_RETURN transactions.</p>

<p>Is it possible?</p>

<multi-signature>
OP_RETURN with Multisig
Igor Barinov
# OP_RETURN with Multisig

(Asked by: username_0 on 2016-01-26)

Let's say I have wallets A,B,C.
A funds multisig address with B and C.
B & C show keys, get input and spent it to OP\_RETURN transactions.

Is it possible?

**Tags:** multi-signature


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## 1 answers

### Answer by username_1 on 2016-01-26. Score: 1

If this is what you are proposing:
Address A: 1Axyz...
Address B: 1Bxyz...
Address C: 1Cxyz...

Tx1

A -> Multisig requiring 1 of 2 signatures from pubkeys of B & C

Tx2

Tx1 output 0 -> OP_RETURN

Then yes, that's totally legal on the blockchain. Not sure why you would want to do it, though.

> **Comments:**
> **username_2**: @IgorBarinov Huh? I think you got cut off there.  
> **username_0**: Thanks! So here is the idea: Company B splits an "access key" which can be used to access a file from company’s http server into two parts. One part has been sent to company A using regular communication, e.g. email. We need to prove that both Company A approved to accept this request and client approved to share his file from company B to company A.  
> **username_0**: Company A created and funded a wallet to accept this key. Company B and it's client both sign a transaction with part of access key in op_return. Company A knows that the client gave access for this file by signing a transaction and gets second part of the key from the blockchain transaction.  

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