Posted By : Pankaj
In today's digital world, document security and integrity are vital. Traditional document management systems (DMS) are subject to tampering and unauthorized access. However, blockchain solutions development provides a strong and secure document management system that ensures authenticity and immutability. In this article, we'll look at how to build a simple document management system with blockchain technology.
Before we go into the implementation, let's look at why blockchain is a great fit for document management:
Immutability: Once data is stored on a blockchain, it cannot be changed or erased. This ensures the document's integrity.
Transparency: Blockchain offers a transparent and verifiable method for tracking the history of documents.
Security: Because blockchain is decentralized, bad actors have a tough time manipulating data.
Decentralization: It eliminates a single point of failure by distributing data among several nodes.
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Blockchain Network: This is the foundation of our system, where papers will be hashed and saved.
Smart Contracts: These are self-executing contracts in which the terms of the agreement are directly written in code.
User Interface: A simple interface that allows users to upload and validate documents.
Storage: Documents themselves can be stored off-chain (for example, IPFS) alongside their hashes stored on-chain for verification.
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To keep things simple, we'll be using Ethereum, one of the most popular blockchain platforms. Use tools like Ganache to create a local Ethereum network.
Ganache can be downloaded and installed directly from the official website.
Begin Ganache: Launch Ganache to begin your local Ethereum blockchain.
We'll create a simple smart contract in Solidity to manage document storage.
solidity
Copy code
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract DocumentManager {
struct Document {
string hash;
address owner;
uint256 timestamp;
}
mapping(string => Document) private documents;
function storeDocument(string memory _hash) public {
require(bytes(documents[_hash].hash).length == 0, 'Document already exists');
documents[_hash] = Document(_hash, msg.sender, block.timestamp);
}
function verifyDocument(string memory _hash) public view returns (address, uint256) {
require(bytes(documents[_hash].hash).length != 0, 'Document does not exist');
Document memory doc = documents[_hash];
return (doc.owner, doc.timestamp);
}
}
Compile the contract: To compile the contract, use the Remix IDE.
Deploy the Contract: Install the contract on your local Ganache network using Remix or Truffle.
Using IPFS (InterPlanetary File System) to store off-chain documents:
Install IPFS: To set up IPFS, follow the installation procedure.
Add a document to IPFS: To add a document, run the IPFS command line.
sh
Copy code: ipfs add path/to/document.
Get the hash: IPFS will return a hash of your content. This hash will be recorded on the blockchain.
To interact with our smart contract, we'll build a simple web interface out of HTML, CSS, and JavaScript.
HTML
Copy code
Document Management System
Document Management System
Upload Document: Reads the file, computes the hash, and stores it on the blockchain.
Verify Document: Uses a document hash to check the blockchain and display the owner and timestamp.
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Following these instructions will allow you to establish a simple yet secure document management system utilizing blockchain technology. This technology guarantees the integrity and authenticity of papers, offering a visible and tamper-proof solution. As blockchain technology advances, its applications in document management and other fields will expand, creating new potential for creativity and security. If you are looking to initiate a document management system using blockchain, connect with our blockchain developers to get started.
September 5, 2024 at 07:22 pm
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