# WISxCORE S1 FAQs

By [Who is Satoshi](https://paragraph.com/@wisxyz) · 2022-06-26

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How much can I mint an SBT?
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Free.

Minting gas on testnet will also be free.

In the future, only gas fees will be charged on the mainnet.

Can I use SBT to play games?
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Yes, you can.

But you still need an activation code.

And the efficiency of the game will be much lower than using NFTs.

How can I mint my SBT?
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SBT minting is currently only possible using the WIS App.

Can I choose the image I like?
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The algorithm generates a unique avatar image for each address.

If you don't like the default generated avatar, you can generate a new avatar by consuming invitation points.

Can the avatar be modified after casting it into SBT?
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Use invitation points to get alternative avatars before mint.

However, after an avatar mint becomes an SBT, it cannot be modified.

How to get invitation points?
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Invite your friends, when one of your friends' certification level exceeds level 0, you can get 1 invitation point.

Where will my SBT be stored?
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Since Core Testnet has not been launched yet, we currently mint SBTs on BTCs Testnet.

Why can't I see the contract source code now?
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Currently BTCs Testnet does not support API submission of source code.

But our open source SBT contract code can be viewed on the BSC network.

Open source code can also be seen in Core Mainnet in the future.

[https://bscscan.com/address/0x09F56eBee86ffCBeC572996f7d66A9ec2c1A3308](https://bscscan.com/address/0x09F56eBee86ffCBeC572996f7d66A9ec2c1A3308)

Does my SBT still exist after a Core Testnet update?
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Yes.

No gas fees to migrate to the new testnet.

Does my SBT still exist after the Core Mainnet goes live?
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Yes.

But migrating to the mainnet requires gas fees.

How can I sell my SBT?
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SBT is soul bound, you cannot sell or transfer it.

Can SBT be converted into NFT?
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No. But we are designing a way to get NFT with probability by using SBT.

Is this the official cooperation between WIS team and CORE DAO?
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No, this is the first season of SBTs produced with ❤️ by the WIS team for the CORE DAO community.

This is an important test for SBTs and multi-chain supported features.

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*Originally published on [Who is Satoshi](https://paragraph.com/@wisxyz/wisxcore-s1-faqs)*