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Tokens · medium

13. Creating Coins (sui::coin::create_currency)

Fungible tokens and Treasury Capabilities.

1 min read2 questionsup to 50 XPtopic 13/25

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Publishing a token currency returns a `TreasuryCap<T>` (permits minting/burning) and a `CoinMetadata<T>` (sets decimals, symbol, and icon URL).

move
let (treasury_cap, metadata) = coin::create_currency(
    witness, 9, b"USDC", b"USD Coin", b"", option::none(), ctx
);
transfer::public_freeze_object(metadata);
transfer::public_transfer(treasury_cap, ctx.sender());

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Check your understanding

  1. 1. What capability is returned to the publisher when creating a new Coin on Sui?

  2. 2. Why is CoinMetadata typically frozen with transfer::public_freeze_object?

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