user7433: Here is an example of multisig tx
https://blockchain.info/tx/09dd94f2c85262173da87a745a459007bb1eed6eeb6bfa238a0cd91a16cf7790?show_adv=true
the 3rd one output is 1 of 2 keys. 
So the question is what is going to happen if 
both addresses will try to spend that transaction ? 

user12835: Each private key can send the transaction fully, similar to having a joint account, the other party can cash out the account at any time and so can you.

7433: <p>Here is an example of multisig tx</p>

<p><a href="https://blockchain.info/tx/09dd94f2c85262173da87a745a459007bb1eed6eeb6bfa238a0cd91a16cf7790?show_adv=true" rel="nofollow">https://blockchain.info/tx/09dd94f2c85262173da87a745a459007bb1eed6eeb6bfa238a0cd91a16cf7790?show_adv=true</a></p>

<p>the 3rd one output is 1 of 2 keys. </p>

<p>So the question is what is going to happen if 
both addresses will try to spend that transaction ? </p>
 12835: <p>Each private key can send the transaction fully, similar to having a joint account, the other party can cash out the account at any time and so can you.</p>
