<p>Depends on the wallet. To recognise the transaction at all, their wallet would have to have the script / multisig address in it too. They'd have to have done that themselves, you can't generally trick someone because their wallet simply wouldn't see the transaction at all.</p>

CC BY-SA 4.0
2018-08-05T03:13:58.517Z
right, obviously depends on the wallet. i was asking about the current popular ones. you're saying they wouldn't recognize it, because it's a weird format? that's good!
Farzher
CC BY-SA 4.0
2018-08-05T03:15:21.347Z
Yep! A multisig address starts with a 3 and is indistinguishable from any other address starting with a 3 unless you have the corresponding script
meshcollider
CC BY-SA 4.0
2018-08-05T03:16:34.437Z
do you need a multisig address to do something like this? you can't lock a coin for 1 of 2 normal bitcoin addresses?
Farzher
CC BY-SA 4.0
2018-08-05T04:07:38.487Z
@StephenBugsKamenar That's essentially what a multisig does. You supply m public keys, and say an output can be spent by n of those keys signing the tx (an n of m multisig).
Raghav Sood
CC BY-SA 4.0
2018-08-05T03:05:24.990Z
2018-08-05T03:05:24.990Z
meshcollider
<p>it seems like the scripting language could allow multiple private keys to spend a coin?</p>

<p>what if i send a coin to someone, but also allow it to be spendable by me. would their wallet still show they received the $?</p>

<script>
what if a coin is spendable by multiple keys?
Farzher
# what if a coin is spendable by multiple keys?

(Asked by: username_0 on 2018-08-05)

it seems like the scripting language could allow multiple private keys to spend a coin?

what if i send a coin to someone, but also allow it to be spendable by me. would their wallet still show they received the $?

**Tags:** script


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## 1 answers

### Answer by username_1 on 2018-08-05. Score: 3 | Accepted answer

Depends on the wallet. To recognise the transaction at all, their wallet would have to have the script / multisig address in it too. They'd have to have done that themselves, you can't generally trick someone because their wallet simply wouldn't see the transaction at all.

> **Comments:**
> **username_0**: right, obviously depends on the wallet. i was asking about the current popular ones. you're saying they wouldn't recognize it, because it's a weird format? that's good!  
> **username_1**: Yep! A multisig address starts with a 3 and is indistinguishable from any other address starting with a 3 unless you have the corresponding script  
> **username_0**: do you need a multisig address to do something like this? you can't lock a coin for 1 of 2 normal bitcoin addresses?  
> **username_2**: @StephenBugsKamenar That's essentially what a multisig does. You supply m public keys, and say an output can be spent by n of those keys signing the tx (an n of m multisig).  

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