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This project allows the retrieval of historical data from the blockchain programmatically, switching between a full and archive node provider when necessary.

See the full tutorial on the Chainstack blog:

• Querying full and archive Ethereum nodes with JavaScript

This repository holds the JavaScript version of a tool to query common state functions. Some essential functions include getting an address balance and storage at a given position, a contract bytecode, or even the whole transactions included on a given block.

This tool queries the blockchain using the web3 and inquirer libraries for JavaScript.

git clone https://github.com/yieniggu/chainstack-full-vs-archive-query-js.git

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.

Add your RPC node URLs and rename the file to .env.

CHAINSTACK_FULL_NODE="CHAINSTACK_FULL_NODE_URL"
CHAINSTACK_ARCHIVE_NODE="CHAINSTACK_ARCHIVE_NODE_URL"

npm run start

• Node.js: ^16.17.0— install Node
• A full and archive node RPC endpoints.

Deploy a full and archive node with Chainstack:

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

• dotenv: ^16.0.3
• inquirer: ^8.2.4
• web3.js: ^1.7.4

Clone this repository:

git clone https://github.com/yieniggu/chainstack-full-vs-archive-query-js.git

Install the dependencies in the project's directory:

cd query-full-and-archive-nodes-javascript

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.