# Ownership features in ICRC-1 standard
**URL:** https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008
**Category:** Developers
**Tags:** Discussing
**Created:** [August 8, 2023, 9:19am UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008 "2023-08-08T09:19:44Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@bbb](https://forum.dfinity.org/u/bbb)
#### Post date: [August 8, 2023, 9:19am UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/1 "2023-08-08T09:19:44Z")
Hi, all!
I have a question regarding to ownership of ICRC-1 standard.
In evm based blockchain platform, all tokens has owner and transferOwnership function.
I looked ICRC-1 standard source code but there is not functions related with ownership.
Will it be added later or won’t consider about ownership of tokens on Internet Computer?
In other hands, can I add this feature by customizing token standard?
If anyone have an idea about this, please let me know.
Thanks
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### Author:  [@sea-snake](https://forum.dfinity.org/u/sea-snake)
#### Post date: [August 8, 2023, 9:32am UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/2 "2023-08-08T09:32:10Z")
This is already natively possible with all smart contracts on the IC, it’s called ‘controllers’. Contracts can also own other contracts.
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### Author:  [@roman-kashitsyn](https://forum.dfinity.org/u/roman-kashitsyn)
#### Post date: [August 8, 2023, 9:32am UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/3 "2023-08-08T09:32:32Z")
On the Internet Computer, all canisters have _controllers_, i.e., principals who can modify canister settings and change the code. A canister can check whether the caller is among its controllers using the system API (`ic0.is_controller` system call).
Overall, I don’t think we need another layer of token “owners” beyond the controller mechanism.
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### Author:  [@bbb](https://forum.dfinity.org/u/bbb)
#### Post date: [August 8, 2023, 1:38pm UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/4 "2023-08-08T13:38:57Z")
Thanks for your help.
Then, can canister have several controller?
and can I add new controller and remove original controller? It’s similar to transfer ownership.
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### Author:  [@sea-snake](https://forum.dfinity.org/u/sea-snake)
#### Post date: [August 8, 2023, 2:11pm UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/5 "2023-08-08T14:11:19Z")
Yes it’s similar, a canister can have multiple controller principals. Controllers are the canister/user principals that are allowed to update/delete the canister and add/remove other controllers.
Controllers do not limit which canister methods can be called, you’ll still have to manually implement this yourself, for example the asset canister created by DFX has a list of authorized principals that are allowed to add/update/delete files.
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### Author:  [@bbb](https://forum.dfinity.org/u/bbb)
#### Post date: [August 8, 2023, 2:59pm UTC](https://forum.dfinity.org/t/ownership-features-in-icrc-1-standard/22008/6 "2023-08-08T14:59:24Z")
thank you for your reply. 😀