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Retrieve multiple token balances on Ethereum

This repository contains code examples on how you can retrieve Ethereum tokens in bulk using:

• GraphQL
• Etherplex
• web3.js BatchRequest

Quick start

Clone the repository:

git clone https://github.com/chainstack/ethereum-token-balances.git

Install dependencies:

npm ci

Use npm ci to launch a clean install of the dependencies, this will install the same version as in the package.json file.

Replace the following values in the constant.js file to suit your use case:

• username — your Ethereum node RPC username.
• password — your Ethereum node RPC password.
• rpcEndpoint — your Ethereum node RPC endpoint.
• bathEndpoint — your Ethereum node RPC endpoint with authentication credentials.
• walletAddress — the account address you want to query.
• ABI (Application Binary Interface) - contract ABI with only the balanceOf function, remember to add the function calls you're planning to execute to the ABI constant.

Then:

GraphQL

GraphQL is a runtime natively supported by Go Ethereum client. See also GraphQL on Ethereum.

Run:

node graph

Sample results:

{
  "GameCredits":"1600000000000000000000 GAME",
  "Swarm Fund":"0 SWM",
  "Augur":"250684955559177177971383 REP",
  "Tether":"52057527540802 USDT",
  "DigixDAO":"122062000003 DGD",
  "SingularDTV":"1809462 SNGLS",
  "Veros":"0 VRS",
  "Golem":"83169802320824576633066602 GLM",
  "Circuits of Value":"0 COVAL",
  "chrono tech":"0 TIME",
  "Melon":"0 MLN",
  "WeTrust":"0 TRST",
  "iExec RLC":"1633118384742405 RLC",
  ...
}

Etherplex

Etherplex is a JavaScript library that makes use of the multicall smart contract to aggregate function calls and execute them in batches.

Run:

node etherplex

Sample results:

{
  "GameCredits":"1600000000000000000000 GAME",
  "Swarm Fund":"0 SWM",
  "Augur":"250684955559177177971383 REP",
  "Tether":"52057527540802 USDT",
  "DigixDAO":"122062000003 DGD",
  "SingularDTV":"1809462 SNGLS",
  "Veros":"0 VRS",
  "Golem":"83169802320824576633066602 GLM",
  "Circuits of Value":"0 COVAL",
  "chrono tech":"0 TIME",
  "Melon":"0 MLN",
  "WeTrust":"0 TRST",
  "iExec RLC":"1633118384742405 RLC",
  ...
}

web3.js BatchRequest

web3.js is a JavaScript library that makes use of the generic JSON-RPC methods.

The web3.js BatchRequest method aggregates the list of contract function calls and converts them into an array of JSON-RPC calls before sending it to the Ethereum node in one XMLHttpRequest.

Run:

node batch

Sample results:

{
  "GameCredits":"1600000000000000000000 GAME",
  "Swarm Fund":"0 SWM",
  "Augur":"250684955559177177971383 REP",
  "Tether":"52057527540802 USDT",
  "DigixDAO":"122062000003 DGD",
  "SingularDTV":"1809462 SNGLS",
  "Veros":"0 VRS",
  "Golem":"83169802320824576633066602 GLM",
  "Circuits of Value":"0 COVAL",
  "chrono tech":"0 TIME",
  "Melon":"0 MLN",
  "WeTrust":"0 TRST",
  "iExec RLC":"1633118384742405 RLC",
  ...
}

Prerequisites

• Node.js: ^16.17.0— install Node
• A node RPC endpoint.

Deploy a node with Chainstack:

1. Sign up with Chainstack.
2. Deploy a node.
3. View node access and credentials.