# Digitally sign a URCap

**URL:** <https://forum.universal-robots.com/t/digitally-sign-a-urcap/2531>\
**Category:** URCaps SDK\
**Created:** [August 15, 2018, 2:02pm UTC](https://forum.universal-robots.com/t/digitally-sign-a-urcap/2531 "2018-08-15T14:02:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anon62734967](https://avatars.discourse-cdn.com/v4/letter/a/bcef8e/32.png) [@anon62734967](https://forum.universal-robots.com/u/anon62734967)\
**Post date:** [August 15, 2018, 2:02pm UTC](https://forum.universal-robots.com/t/digitally-sign-a-urcap/2531/1 "2018-08-15T14:02:43Z")

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Hi,  
Is it possible to digitally sign a URCap (e.g. with java jarsigner) and verify that its contents are intact?  
We are planning to release a commercial URCap that is bound to a specific serial number, and we want to protect it from cracking/hacking.