Digital Certificate Verification using Blockchain

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023 www.irjet.net p-ISSN: 2395-0072
© 2023, IRJET | Impact Factor value: 8.226 | ISO 9001:2008 Certified Journal | Page 1464
Digital Certificate Verification using Blockchain
Prof. Priyanka Abhale1, Anjali Chikate2, Shubhada Jadhav3, Irshad Shaikh4, Rutuja
Bhole5
ALARD COLLEGE OF ENGINEERING & MANAGEMENT
(ALARD Knowledge Park, Survey No. 50, Marunji, Near Rajiv Gandhi IT Park, Hinjewadi, Pune-411057)
Approved by AICTE. Recognized by DTE. NAAC Accredited. Affiliated to SPPU (Pune University).
----------------------------------------------------------------------***--------------------------------------------------------------------
Abstract - This composition describes a blockchain
technology algorithm for validating digital instruments. As
the number of university and advanced education scholars
and graduates continues to grow each time, there's a need
to fluently validate scale instruments. In this paper, we
project two fiscal models in which the price of services is
balanced between graduates and employers as the main
actors of services. scholars demand cheap and fluently
empirical instruments, and employers demand presto and
dependable evidence of their degrees. The issue of fake
credentials is a big bone. Getting a fake education
instrument in India isn't that delicate.
Key Words: (Blockchain, Document Verification, QR
Code, Privacy Protection, Hash Value, connect to the
blockchain network, Digital Certificate, distributed,
Pre-processing)
1. INTRODUCTION
During the training scholars will get numerous
instruments. scholars produce these instruments when
applying for public or private sector jobs. All of these
instruments must be manually vindicated. occasionally
scholars present fake instruments and are delicate to
identify. The issue of fake academic credentials has long
been a problem in academia. This is because similar
instruments are cheap to produce and bear homemade
confirmation, which greatly complicates the confirmation
process. This problem can be answered by storing digital
instruments on the blockchain.
1.1 Problem Definition
Student certificate verification using blockchain
technology is a process that utilizes the decentralized and
immutable nature of blockchain to verify the authenticity
and integrity of student certificates. It involves recording
certificate details, such as academic qualifications and
achievements, on a blockchain network. This information
is cryptographically secured and stored across multiple
nodes in the network, making it resistant to tampering and
fraud.
1.2 Model Architecture
For blockchain- grounded inflexible instruments,
universities must first enroll. Each university has a
portmanteau address for transferring deals. Universities
can only be added by smart contract possessors. Once
added, the university can pierce the system to produce
instruments containing data fields. Each instrument
created is stored in the Interplanetary train System (IPFS)
and returned with a unique hash generated using the SHA-
256 algorithm. This serves as a unique ID for each
document. All this data, along with this generated hash and
instrument details, is stored on the blockchain and the
performing sale ID is transferred to the pupil.
systems to achieve agreement among multiple participants
or nodes on a single shared value or state. Consensus
algorithms are crucial for ensuring the integrity,
consistency, and fault tolerance of distributed systems,
especially in scenarios where there is a possibility of node
failures or malicious behavior.
Contrast-Limited Adaptive Histogram Equalization
(CLAHE): CLAHE further refines AHE by introducing a
constraint on the amount of contrast enhancement
Fig -1: Model Architecture
1.3 Algorithm consensus algorithm
A consensus algorithm is a mechanism used in distributed

applied. It limits the amplification of the histogram
equalization process to prevent over-amplification of noise
and maintain a more natural appearance.
smart contrast algorithms
These are just a few examples of smart contrast
algorithms, and there are many variations and
combinations of these techniques. Each algorithm has its
strengths and weaknesses, and the choice of algorithm
depends on the specific requirements of the application
and the desired visual outcome cases. Some notable
consensus algorithms include:
Raft: Raft is a consensus algorithm designed for simplicity
and ease of understanding. It divides the participants into
three roles: leader, follower, and candidate. The leader is
responsible for coordinating the consensus process, and
followers replicate the leader's actions. Raft focuses on
strong leader election and log replication to achieve
consensus.
2. Implementation
Implementing certification verification using QR codes and
blockchain technology can provide a secure and tamper-
proof method for verifying the authenticity and integrity of
certificates.
1. Certificate Creation: The certification authority
generates the certificates and assigns a unique identifier to
each certificate. The certificate details, including the issuer,
recipient, and certification data, are stored in a digital
format.
2. QR Code Generation: A QR code is generated for each
certificate, containing the unique identifier or a reference
to the certificate data. The QR code can be printed on the
physical certificate or made available electronically.
3. Blockchain Integration: The certificate data and its
unique identifier are hashed and stored on a blockchain.
The blockchain provides an immutable and decentralized
ledger to securely store and verify the certificate
information. The certificate hash serves as a digital
fingerprint or proof of the certificate's existence.
4. QR Code Linking: The QR code is linked to the
corresponding certificate entry on the blockchain. This
linkage can be achieved by storing the unique identifier or
the blockchain transaction ID within the QR code itself or
associating it in a centralized database.
5. Verification Process: When a certificate needs to be
verified, the recipient or anyone with access to the
certificate can scan the QR code using a QR code reader
application on their smartphone or device.
6. QR Code Decoding: The QR code reader decodes the
information embedded in the QR code, which typically
includes the unique identifier or reference to the
certificate data.
7. Blockchain Lookup: The decoded unique identifier or
reference is used to retrieve the corresponding certificate
entry from the blockchain. The certificate data, including
the hash value, is fetched from the blockchain.
8. Hash Comparison: The fetched certificate data is hashed
again, and the resulting hash is compared with the stored
hash value retrieved from the blockchain. If the hashes
match, it indicates that the certificate has not been
tampered with.
9. Additional Verification: Depending on the requirements,
additional verification steps can be performed, such as
checking the issuer's digital signature, expiration date, or
cross-referencing the certificate details with a trusted
database.
3.Objectives
The system saves paper, reduces administrative costs,
prevents document counterfeiting, and provides accurate
and reliable digital certificate information. This system
ensures the accuracy, security and immutability of
information. Implement a validation algorithm that can
validate each peer for each access request.
Scope of Study
The purpose of system is to enhance the security,
transparency, and trustworthiness of certificates or
credentials issued by a system or organization. By
integrating QR codes into the certificates, individuals or
entities can easily scan the code with a smartphone or
other devices to retrieve and verify the certificate's
information. This process helps in preventing tampering or
forgery of the certificate. The use of blockchain technology
adds an additional layer of security and immutability to
the verification process.

4. OUTPUT
1. Home Page
2. Register Page
3. Student Login Page
5. Student Education Details
4. Student Profile Update
6. Student profile Details in Admin page
7. Student Upload QR code to Company

8. Generate QR code
ACKNOWLEDGEMENT
Compass of Study This document was supported by Alard
College of Engineering & Management, Pune 411057. We'd
like to express our sincere gratefulness to everyone who
gave us precious opinions toward the completion of the
forum report of" Digital Qualification Examination by
Blockchain", which is part of the class of this forum. We
thank the cooperating departments for furnishing precious
support and prerequisites for system development. We're
veritably thankful to Professor Priyanka Abhale for guiding
us in the right way, giving her time whenever demanded,
giving her knowledge and participating their experience in
carrying out this design. We'd like to thank you for
correcting our dubieties by furnishing them.
FUTURE SCOPE
1. Enhanced Security: Blockchain's inherent properties of
immutability and decentralized consensus make it highly
secure for certificate verification. By storing certificates on
a distributed ledger, the risk of fraud, tampering, or
unauthorized modifications is minimized, ensuring the
integrity and authenticity of certificates.
2. Portability and Interoperability: Certificates stored on a
blockchain can be easily accessed and verified from
anywhere, providing portability and accessibility across
different platforms and institutions. Interoperability
between blockchain networks can further enable cross-
platform verification, allowing certificates from various
sources to be validated seamlessly.
REFERENCES
1. S.Gupta and R.Gupta," Blockchain- grounded Certificate
Verification System using Ethereum." 2020 IEEE
International Conference on Smart Technologies and
Management for Computing, Communication, Controls,
Energy and Accoutrements (ICSTM).
2. Huh and S. Shim," Blockchain- grounded Certificate
Verification for MOOCs." 2020 IEEE 20th International
Conference on Advanced Learning Technologies (ICALT).
Ghosh, M. Chatterjee, and A. Kumar," Enhancing Security of
Certificate Verification Using Blockchain Technology."
2020 5th International Conference on Computing,
Communication, and Security (ICCCS).
3. Iqbal, M. Raza, and R. Asim," Blockchain- Grounded
Certificate Verification Using Permissioned Blockchain
fabrics." 2021 International Conference on Intelligent
Computing and Sustainable Systems (ICICSS).
4. Vijayarani, R.S. Latha, and R. Gayathri," Secured
Certificate Verification System using Blockchain
Technology." 2022 transnational Conference on Advances
in Computing, Communication and Information Science
(ICACCIS).
In this research, we have successfully investigated how
digital certificate validation works. This model can be used
in enterprise implementations of candidate validation
where candidate certificates are legally validated. The
automatic certificate issuance is open and transparent
within the system. Therefore, a company or organization
can request information about certificates from the
system. The proposed system saves administrative costs,
prevents document forgery, and provides accurate and
reliable digital certificate information.
5. CONCLUSIONS

Digital Certificate Verification using Blockchain

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