<p>No, it is not possible.</p>

<p>"Bitcoin contracts" are executing when spending funds from UTXO. If the receiver can do it without signing the transaction - everyone can do the same thing. </p>

CC BY-SA 4.0
2018-05-15T12:15:58.500Z
Thanks for that, with ETH I found a way to handle it. 
Do anyone know if and when RSK is availbale for the public?
marigold
CC BY-SA 3.0
2018-03-31T10:08:51.100Z
2018-03-31T10:08:51.100Z
amaclin
<p>I really need help.
I am currently Developing a Bitcoin wallet and want to build in a SMS Based send function where the sender does not need to know the receiver publicKey. After the contract get executed on the reciever phone through the wallet the public key should be added to it and execute the redeem process / script.</p>

<p>Is that possible in any way? </p>

<wallet><script><checklocktimeverify>
Bitcoin multisig contract - to Lock coins with nTimeLock (BIP65)
marigold
# Bitcoin multisig contract - to Lock coins with nTimeLock (BIP65)

(Asked by: username_0 on 2018-03-31)

I really need help.
I am currently Developing a Bitcoin wallet and want to build in a SMS Based send function where the sender does not need to know the receiver publicKey. After the contract get executed on the reciever phone through the wallet the public key should be added to it and execute the redeem process / script.

Is that possible in any way?

**Tags:** wallet, script, checklocktimeverify


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## 1 answers

### Answer by username_1 on 2018-03-31. Score: 1

No, it is not possible.

"Bitcoin contracts" are executing when spending funds from UTXO. If the receiver can do it without signing the transaction - everyone can do the same thing.

> **Comments:**
> **username_0**: Thanks for that, with ETH I found a way to handle it.  Do anyone know if and when RSK is availbale for the public?  

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