  Recent technological advancements have led to the development of new methods
for managing organ donation systems, which aim to overcome the limitations of
traditional centralized systems. To achieve increased transparency, security,
and efficiency in the organ donation process, blockchain technology is being
proposed as a replacement for these centralized systems. However, most previous
works on organ donation systems have focused on using Ethereum-based blockchain
solutions, which offer limited control, a fixed set of consensus protocols, and
no support for concurrent executions. In contrast, our work has utilized the
Hyperledger Fabric framework to develop a network model of the organ donation
system. We have designed and deployed a prototype system with smart contracts
using Amazon Managed Blockchain Service. Additionally, we have built a client
application that uses the Fabric SDK to interact with the network and perform
various actions. To evaluate the performance of our system, we conducted
extensive testing using the Hyperledger Caliper benchmarking tool. In our test
bench, the system achieved a peak actual send rate of 389.1 transactions per
second (TPS) for creating new records and 508.4 TPS for reading records. At a
send rate of 800 TPS, the system took an average of 12.16 seconds to serve a
request for creating a record and an average of 3.71 seconds to serve a request
for reading a record. Future work is required to extend the functionalities of
the system and identify potential endorsers and managers for this type of
controlled blockchain network.
