CCC's Support for User Defined Token (UDT)

CCC - CKBers' Codebase is a one-stop solution for your CKB JS/TS ecosystem development.
Empower yourself with CCC to discover the unlimited potential of CKB.
Interoperate with wallets from different chain ecosystems.
Fully enabling CKB's Turing completeness and cryptographic freedom power.

Quick Start

• At the moment, UDT and UDTPausable from @ckb-ccc/udt are fully supported through SSRI. In the future, there will be built in TypeScript generation directly based on the Rust source code on compilation.
• To instantiate a UDT script compliant with SSRI, you can provide the SSRI server url and also specify the OutPoint of the script code.
• You can also instantiate a UDTPausable script or other scripts that extends from UDT.

import { Server } from "@ckb-ccc/ssri";
import { Udt, UdtPausable } from "@ckb-ccc/udt";

const { signer } = useApp();
const server = new Server("https://localhost:9090");

const udt = new Udt(
  server,
  {
    txHash: "0x...",
    index: 0,
  },
  {
    codeHash: "0x...",
    hashType: "type",
    args: "0x...",
  },
);

const udtPausable = new UdtPausable(
  server,
  {
    txHash: "0x...",
    index: 0,
  },
  {
    codeHash: "0x...",
    hashType: "type",
    args: "0x...",
  },
);
Copy

You can directly call the methods in the script:

const { res: udtSymbol } = await udt.symbol();
const { res: pauseList } = await udtPausable.enumeratePaused();
Copy

Some of the methods can return a ccc.Transaction. For example, you can call transfer with the following params:

const { script: to } = await signer.getRecommendedAddressObj();

const { res: transferTx } = await udt.transfer(signer, [{ to, amount: 100 }]);
const completedTx = await udt.completeUdtBy(transferTx, signer);

await completedTx.completeInputsByCapacity(signer);
await completedTx.completeFeeBy(signer);
const transferTxHash = await signer.sendTransaction(completedTx);
Copy

Read more about CCC on our website or GitHub Repo.