Guides
SupportStatusSign UpLogin

Metadata storage in NFTs, IPFS and Limits

Suggest Edits

Tatum partnered with NFT.Storage to offer free IPFS storage for NFTs to developers. The files are stored on IPFS.

📘

IPFS file limit size is up to 50MB. File batch upload is unsupported.

Steps

Step_1: Upload an image, video, audio file, etc to IPFS

Example request:

  • A successful request will return a response that includes an IPFS hash
curl --request POST \
  --url https://api.tatum.io/v3/ipfs \
  --header 'content-type: multipart/form-data' \
  --header 'x-api-key: REPLACE_KEY_VALUE' \
  -F file=@local_path_to_your_file_e_q_test-356.jpg
//Response:
{
  "ipfsHash": "bafybeihrumg5hfzqj6x47q63azflcpf6nkgcvhzzm6f6nhic2eg6uvozlq/test-356.jpg"
}

import {ipfsGet, ipfsGet} from '@tatumio/tatum';
/**
 * Gets data from the IPFS
 * @param id - IPFS CID of the file
 */
  const ipfsId = await ipfsGet('QmXJJ6UF5WkF4WTJvsdhiA1etGwBLfpva7Vr9AudGMe3pj');
 
/**
 * Upload file to the IPFS storage.
 * @param file - data buffer of the file. Content Type: multipart/form-data
 * @returns ipfsHash - IPFS hash of the file
 */
  const ipfsHash = await ipfsUpload('logo.jpg', 'fileName');

Step_2: Create a JSON metadata file

Create a JSON file with the metadata scheme to upload. The required fields are:

  1. Name of NFT
  2. Description of NFT
  3. IPFS hash from step_1

Example file

{
  "name": "Lorem Ipsum Dolor Test",
  "description": "Friendly Lorem OpenSea Creature that enjoys long swims in the ocean.",
  "image": "ipfs://bafybeihrumg5hfzqj6x47q63azflcpf6nkgcvhzzm6f6nhic2eg6uvozlq/test-356.jpg"
}

Step_3: Upload your saved JSON metadata scheme to IPFS

Example request:

  • A successful request will return a response that includes an IPFS hash
curl --request POST \
  --url https://api.tatum.io/v3/ipfs \
  --header 'content-type: multipart/form-data' \
  --header 'x-api-key: REPLACE_KEY_VALUE' \
  -F file=@local_path_to_your_file_e_q_test-356.json
//Response:
{
  "ipfsHash": "bafybeidi7xixphrxar6humruz4mn6ul7nzmres7j4triakpfabiezll4ti/metadata.json"
}

Step_4: Include the response hash in the "url" of your NFT mint request

Example request:

//cURL && PrivateKey
curl --request POST \
  --url https://api.tatum.io/v3/nft/mint \
  --header 'content-type: application/json' \
  --header 'x-api-key: REPLACE_KEY_VALUE' \
  --data '{
      "chain":"MATIC",
      "tokenId":"100000",
      "to":"0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
      "contractAddress":"0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
      "url":"ipfs://bafybeidi7xixphrxar6humruz4mn6ul7nzmres7j4triakpfabiezll4ti/metadata.json",
      "fromPrivateKey":"0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2"
  }'
//cURL && KMS
curl --request POST \
  --url https://api.tatum.io/v3/nft/mint \
  --header 'content-type: application/json' \
  --header 'x-api-key: REPLACE_KEY_VALUE' \
  --data '{
      "chain":"MATIC",
      "tokenId":"100000",
      "to":"0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
      "contractAddress":"0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
      "url":"ipfs://bafybeidi7xixphrxar6humruz4mn6ul7nzmres7j4triakpfabiezll4ti/metadata.json",
      "index": 0,
      "signatureId": "26d3883e-4e17-48b3-a0ee-09a3e484ac83", //must match existing wallet in your KMS instance
      "nonce": 0 //optional usage. With high transaction volume, use manual nonce
  }'

import {Currency, mintNFTWithUri} from '@tatumio/tatum';
const transactionHash = await mintNFTWithUri(false, {
    to: '0x687422eEA2cB73B5d3e242bA5456b782919AFc85',
    url: 'ipfs://bafybeidi7xixphrxar6humruz4mn6ul7nzmres7j4triakpfabiezll4ti/metadata.json',
    tokenId: '100000',
    chain: Currency.MATIC,
    contractAddress: '0x687422eEA2cB73B5d3e242bA5456b782919AFc85',
    fromPrivateKey: '0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2'
});

Updated 11 months ago