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Fiverr Pro
English
$
USD
I will develop a blockchain based document verification system
Blockchain Fullstack Developer, Solidity Expert, Web3 Integrations
I specialize in building decentralized applications and integrating smart contracts. Proficient in Solidity, Ethereum, and Web3, and experienced in developing scalable solutions using MEAN and MERN st...
About this Gig
Looking to build a tamper-proof certificate verification system using blockchain?
I will develop CertVerify, a custom blockchain-based solution that allows organizations to issue, store, and verify certificates securely using smart contracts.
Using Solidity, Web3.js, and a clean frontend, this DApp ensures that issued certificates are immutable and verifiable by anyone, eliminating the risk of forgery.
Key Features:
- Smart contract for certificate hash storage
- Web interface to verify certificates using ID/hash
- Admin panel for issuing, managing, and approving certificates (Premium)
- Secure and scalable deployed on testnet or mainnet
- Built using Solidity, Node.js, Angular, MongoDB (on request)
Whether you're an educational institution, training center, or company issuing digital certificates, CertVerify will help you maintain credibility and trust.
Keep your assets and information safe
Cryptocurrency services focus solely on developing and programming. Never share sensitive information or private keys with others.
My Portfolio
FAQ
How does this certificate verification system work?
The system stores a cryptographic hash of each certificate on the blockchain. Anyone can verify a certificate's authenticity by comparing its hash with the one stored on-chain.
Can the certificates be verified publicly without login?
Yes! The system allows public verification by entering the certificate ID or uploading the file to match the hash on the blockchain.
Which blockchain will be used?
By default, I use Ethereum-compatible testnets (like Polygon or Sepolia). For production, I can deploy to Ethereum mainnet or other EVM chains like Polygon, BNB, or Avalanche.
Will the admin panel be included in all packages?
The admin panel is included only in the Premium package
Can you integrate KYC or certificate templates?
Yes, in the Premium package, I can include basic KYC and certificate template selections. Advanced customization is available as an extra.
Is hosting or deployment included?
Yes, deployment to a testnet and assistance with frontend/backend hosting is included in the Premium package.
