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<p>I was studying bitcoin script, and upon watching this transaction in blockexplorer i was confused , what exactly is ScriptSig and scriptPubKey is of reciever?</p>

<p>According to what I know, the receiver contributes the ScripSig and sender contributes the ScriptPubKey. I cannot understand the function of CHECKSIG operation and what signature does it validate.</p>

CC BY-SA 3.0
2018-02-09T13:30:03.747Z
https://en.bitcoin.it/wiki/OP_CHECKSIG
Jan Janssen
CC BY-SA 3.0
2018-02-09T14:35:07.067Z
The question is very generic, and requires a whole lot to be answered... Also the image has low resolution. We would have to type the numbers from an address or a transaction manually into a block explorer - that's a bit too much :-) I provided a link, where the idea of the scripts is explained. Andreas' book "Mastering Bitcoin" is an amazing book that'll definitely give you additional help. It's freely available online here: http://chimera.labs.oreilly.com/books/1234000001802/index.html, see chapters 6 on transactions, and 7 on scripting.
pebwindkraft
<script><input-script>
what are ScriptSig?
Ravi Raj
# what are ScriptSig?

(Asked by: username_0 on 2018-02-09)

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I was studying bitcoin script, and upon watching this transaction in blockexplorer i was confused , what exactly is ScriptSig and scriptPubKey is of reciever?

According to what I know, the receiver contributes the ScripSig and sender contributes the ScriptPubKey. I cannot understand the function of CHECKSIG operation and what signature does it validate.

**Tags:** script, input-script

> **Comments:**
> **username_1**: https://en.bitcoin.it/wiki/OP_CHECKSIG  
> **username_2**: The question is very generic, and requires a whole lot to be answered... Also the image has low resolution. We would have to type the numbers from an address or a transaction manually into a block explorer - that's a bit too much :-) I provided a link, where the idea of the scripts is explained. Andreas' book "Mastering Bitcoin" is an amazing book that'll definitely give you additional help. It's freely available online here: http://chimera.labs.oreilly.com/books/1234000001802/index.html, see chapters 6 on transactions, and 7 on scripting.  

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## 0 answers

