Getting Started with Wasm

Minimum Requirements

• Node.js (>= v20)

Install the Library

If your project does not contain it already, install the peer dependency @iota/iota-sdk as well.

npm

npm install @iota/iota-sdk

Yarn

yarn add @iota/iota-sdk

pnpm

pnpm add @iota/iota-sdk

You can install the latest beta version of the library by running the following command:

npm

npm install @iota/identity-wasm@beta

Yarn

yarn add @iota/identity-wasm@beta

pnpm

pnpm add @iota/identity-wasm@beta

Build the Library

Alternatively, you can build the bindings to work with currently unreleased features. You can find instructions for this in the identity.rs repository.

Usage in Node.js and Web

The Wasm packages are bundled for both Node.js and web. To use them, you must import them from the correct entry point:

Node.js

import { ... } from '@iota/identity/node';

Web

import { ... } from '@iota/identity/web';

Usage Examples

Typescript (Node.js)

bindings/wasm/identity_wasm/examples/src/0_basic/0_create_did.ts

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See full example on GitHub

Typescript (Web)

import { IotaDID } from "@iota/identity-wasm/web";
import { IotaClient } from "@iota/iota-sdk/client";
import { createDocumentForNetwork, getFundedClient, getMemstorage, NETWORK_URL } from "../util";

/** Demonstrate how to create a DID Document and publish it. */
export async function createIdentity(): Promise<void> {
    // create new client to connect to IOTA network
    const iotaClient = new IotaClient({ url: NETWORK_URL });
    const network = await iotaClient.getChainIdentifier();

    // create new client that offers identity related functions
    const storage = getMemstorage();
    const identityClient = await getFundedClient(storage);

    // create new unpublished document
    const [unpublished] = await createDocumentForNetwork(storage, network);
    console.log(`Unpublished DID document: ${JSON.stringify(unpublished, null, 2)}`);
    let did: IotaDID;

    console.log("Creating new identity");
    const { output: identity } = await identityClient
        .createIdentity(unpublished)
        .finish()
        .buildAndExecute(identityClient);
    did = identity.didDocument().id();

    // check if we can resolve it via client
    const resolved = await identityClient.resolveDid(did);
    console.log(`Resolved DID document: ${JSON.stringify(resolved, null, 2)}`);
}

See utils for details about the implementations about the helper functions used here.

Expected Output

Last part of the output should look as following:

Resolved DID document: {
  "doc": {
    "id": "did:iota:aa8c860b:0xa46b033974ca00aca19f4ea319f55cc1cfb44f7fbeb758149a632c43f98acc52",
    "verificationMethod": [
      {
        "id": "did:iota:aa8c860b:0xa46b033974ca00aca19f4ea319f55cc1cfb44f7fbeb758149a632c43f98acc52#key-1",
        "controller": "did:iota:aa8c860b:0xa46b033974ca00aca19f4ea319f55cc1cfb44f7fbeb758149a632c43f98acc52",
        "type": "JsonWebKey2020",
        "publicKeyJwk": {
          "kty": "OKP",
          "alg": "EdDSA",
          "crv": "Ed25519",
          "x": "Hx9cgXJke2LtgVzA0a6VSRa7Yfpzzf9BXa-fGPipgyA"
        }
      }
    ]
  },
  "meta": {
    "created": "2025-03-11T08:07:02Z",
    "updated": "2025-03-11T08:07:02Z"
  }
}

API Reference

Examples