# Safest field to use for md5 storage

**URL:** <https://community.mp3tag.de/t/safest-field-to-use-for-md5-storage/46963>\
**Category:** Support\
**Created:** [November 4, 2019, 11:12am UTC](https://community.mp3tag.de/t/safest-field-to-use-for-md5-storage/46963 "2019-11-04T11:12:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hek](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/h/3bc359/32.png) [@hek](https://community.mp3tag.de/u/hek)\
**Post date:** [November 4, 2019, 11:12am UTC](https://community.mp3tag.de/t/safest-field-to-use-for-md5-storage/46963/1 "2019-11-04T11:12:41Z")

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Hi which field are unlikely and never to be used any all programs? so I can use it for my md5 storage.. I was thinking of using either the copyright or comment field..

Note I don't want to create a custom field because I did it before and editing meta data using windows explorer wiped that field.. I learnt it the hard way..

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [November 4, 2019, 12:41pm UTC](https://community.mp3tag.de/t/safest-field-to-use-for-md5-storage/46963/2 "2019-11-04T12:41:33Z")

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I am equipped with very limited clairevoyant abilities.  
So I am not able to say which turns the future development of players will take and which of the standard (as in "can be used by everyone") fields will be used.

What I can say: it is rather short-sighted to use the Windows Explorer with all its limitations as tagging program. MP3tag is the program of choice for this purpose.

See the help for a list of supported fields:

> **[Tag Field Mappings – Mp3tag Documentation](https://docs.mp3tag.de/mapping/)**
>
> Overview of all available tag fields, their names in Mp3tag, and how they are mapped to the internal structures of the different tag formats. Mp3tag is the universal Tag Editor.

Or you write a little tagging program of your own and use the PRIV field which can only be handled by the originating application. It is a standard field but is usually ignored. And as standard field it won't get deleted by WE.

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:28pm UTC](https://community.mp3tag.de/t/safest-field-to-use-for-md5-storage/46963/3 "2026-02-09T12:28:19Z")

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