(Duplicate) Substrate Client. Different approaches to create a collection

In this guide, we will go through the entire process of creating token using the Unique Network SDK.

To create tokens and collections, we need the following packages:

@unique-nft/substrate-clientopen in new window

@unique-nft/accountsopen in new window


To get signer we need to install the @unique-nft/accountsopen in new window package. An easy way to get signer is to use the KeyringProvider function from the @unique-nft/accounts/keyring package:

Get a signer

// signer.ts
import {KeyringProvider} from '@unique-nft/accounts/keyring';

export const getSigner = async (seed = '//Alice') => {
  const provider = new KeyringProvider({type: 'sr25519'});
  await provider.init();
  const account = await provider.first();
  const signer = account?.getSigner();

  return signer;

Initialize SDK

// sdk.servicce.ts
import { Sdk } from '@unique-nft/substrate-client';
import { getSigner } from './signer';

export const sdk = await Sdk.create({
  chainWsUrl: 'wss://ws-opal.unique.network',
  signer: await getSigner('//Alice'),

Upload a file

You can upload files in the following ways: upload to IPFS, or use our Rest methodopen in new window.

Response example:

  "cid": "QmUDXW8FbHQ1GGhJbj9kiPeCeTH5SX7QPHJFQGtEp9QeEm",
  "fileUrl": "https://ipfs.uniquenetwork.dev/ipfs/QmUDXW8FbHQ1GGhJbj9kiPeCeTH5SX7QPHJFQGtEp9QeEm"

And then, you can use those response entities to create collections/tokens.

Create a collection

import '@unique-nft/substrate-client/tokens';
import { sdk } from './sdk.servicce.ts';

const myCollection = {
  address: 'unjKJQJrRd238pkUZZvzDQrfKuM39zBSnQ5zjAGAGcdRhaJTx',
  description: 'Just sample collection',
  name: 'Sample',
  tokenPrefix: 'SMPL',
  schema: {
    schemaName: 'unique',
    schemaVersion: '1.0.0',
    image: { urlTemplate: 'https://ipfs.uniquenetwork.dev/ipfs/{infix}.ext' },
    coverPicture: {
      ipfsCid: 'QmZ6J9dVMa7B1Xd8PWXALyV8pQUSX5TNNSTpxxWuGH4ZRi',

const result = await sdk.collections.creation.submitWaitResult(myCollection);
const collectionId = result.parsed.collectionId;
const collection = await sdk.collections.get({ collectionId });

Other ways to create a collection

 * returns unsigned extrinsic
const unsignedExtrinsic = await sdk.collections.creation.build(myCollection);

 * return signed extrinsic (unsigned extrinsic + signature + signature type)
const signedExtrinsic = await sdk.collections.creation.sign(myCollection);

 * submitting extrinsic and returns extrinsic hash
const { hash } = await sdk.collections.creation.submit(myCollection);

 * submitting extrinsic and returns Observable of extrinsic progress
const newCollection$ = sdk.collections.creation.submitWatch(myCollection);

Collection settings methods

setLimits - sets collection limits.

setProperties - sets collection properties.

deleteProperties - deletes collection properties.

setPropertyPermissions - sets permissions for collection properties.

setSponsorship - set sponsor of collection.

confirmSponsorship - confirms sponsorship of a collection.

removeSponsorship - deletes the collection sponsor.

setPermissions- sets onchain permissions for a collection.

destroy - destroys collection if no tokens within this collection.

setTransfersEnabled - enables or disables transfers in a collection.

transfer - —Āhanges the owner of the collection.

addAdmin - adds an administrator of a collection.

removeAdmin - removes administrator of a collection.

addToAllowList - adds an address to the allow list.

removeFromAllowList - removes an address from the allow list.

Create a token

import '@unique-nft/substrate-client/tokens';
import { sdk } from './sdk.servicce.ts';

// example ot token arguments
const createTokensArgs = {
  data: {
    image: {
      ipfsCid: '<valid_ipfs_cid>',

const result = await sdk.tokens.create.submitWaitResult(createTokensArgs);
const tokenId = result.parsed;

const token = await this.sdk.tokens.get({ collectionId, tokenId })