Token Extensions
💎 Token Extensions Overview
Token Extensions are advanced functionality designed specifically to meet the need of businesses with compliance obligations. They are added feature sets designed with regulatory obligation in mind, and may break Whirlpool’s functionality if integrated incorrectly.
Orca currently supports a set of Token Extension, with some requiring Token Badge permission. The extensions support status is listed on the table below.
Token Badge is only granted via an explicit, case by case review by the Orca Team. Due to some extension’s ability to compromise Orca’s programs, Token Badges are not issued lightly.
If your project has a reasonable requirement for using Token Extensions, you may reach out to Orca. Please fill out the contact form linked at the bottom of the page.
For a deeper dive into TokenExtensions, please check out Solana Foundation’s White Paper.
🧮 Extension Functionalities and Support Status
TransferFee
Allow transfer fees to be charged on each transfer and sent to a defined account.
Supported
MemoTransfer
Requiring all incoming transfers to include a memo instruction immediately before the transfer function.
Supported
MetadataPointer
Allow token creator to designate an address for the canonical metadata.
Supported
TokenMetadata
Allow storage of token info such as name, symbol, and key parameters.
Supported
InterestBearing
Allows tokens to be set with an interest rate, which continuously compounds.
Supported
ConfidentialTransfer (but non-confidential transfer only)
Allow confidential transfers between participating users without revealing the amount of the transfer.
Supported, Non-confidential transfer only.
PermanentDelegate
Allow for the transfer of any amount of tokens from any account to another or even burn them.
TokenBadge required
TransferHook
Allows calling specific programs with each token transfer
TokenBadge Required
MintCloseAuthority
Allows owners to close mint accounts and reclaim the on the mint account.
TokenBadge Required
DefaultAccountState
Allows mints to predefine the state of a token account upon creation. An account can be either frozen or initialized.
TokenBadge Required
FreezeAuthority (not extension, but restricted
Allows token creator to freeze or thaw individual token accounts associated with their token
TokenBadge Required
NonTransferable
Enables “soul-bound” tokens that cannot be transferred to other accounts
Not Supported
GroupPointer
Allow token creator to designate a group of accounts for its metadata.
Not Supported
Member
Describes configurations for a group member, such as group address and a member’s number.
Not Supported
MemberPointer
Allows the token creator to designate a member account (see above) that describes the mint.
Not Supported
Native mint for Token-2022 (not extension, but restricted)
-
Not Supported
All other extensions not listed in the above
-
Not Supported
Q & A
For more technical deep dive into Token Extensions, feel free to check out our developer documentation on TokenExtension, and our smart contract implementation. Please feel free to ask questions in our Public Discord channel.
If you have a need to gain TokenBadge permission, you can contact us.
Thanks! 🐳
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