Table 1 Literature review of existing methods.

From: A federated incremental blockchain framework with privacy preserving XAI optimization for securing healthcare data

Author and citation

Approach

Blockchain platform

Key technologies

Advantages

Disadvantages

Sezer et al.14

PPFchain

Blockchain

sensor-IoT-based architectures

Precision, effectiveness, and improved security are provided by PPFchain

Real-time data traceability, availability, and low latency

Li et al.15

ADDetector, DP

NA

IoT, FL based scheme

The aggregation procedure among clients and the cloud should be protected by a FL-based system

Data transmission leakage of the model and raw data

Ngan Van et al.,16

PriFL-Chain, DP

Blockchain

FL based scheme, MEC

Minimize the expense of ML model training, efficiently safeguard privacy, and make use of diverse data sources

Large-scale deployment of IoT devices is difficult and expensive

Madill et al.17

ScaleSFL

Blockchain-based sharing- Hyperledger Fabric

FL

Maintain efficiency and security while increasing validation performance linearly

Provide the appearance of malevolent system assaults

Cui et al.18

BCFL, smart contract

Blockchain

FL

Minimize the training loss, and training time of classifier

Communication load of BFL is higher

Lo et al.19

Trustworthy federated learning based on blockchain

Blockchain

FL

Enable accountability and improve fairness

The amount of samples every client has during classification decreases as the number of customers declines

Miao et al.20

PBFL

Blockchain

FL

Achieves convergence and provides privacy protection.

The suggested model has not examined the communication impose of PBFL

Tian et al.21

RPDFL, Ring-All reduce-based data sharing

Blockchain

FL

According to security studies, RPDFL has improved accuracy, convergence, and is provably secure

Real-time applications are not supported

Guduri et al.22

blockchain-based lightweight encryption strategy

Blockchain

Cloud computing

Proposed system very effective proxy re-encryption mechanism with FL

Strive for credibility and embrace responsible AI concepts

Ouyang et al.23

FL based on blockchain

Blockchain

RFID, FL, IoT

Benefits related to decentralization, privacy, and security.

Doesn’t support for large-scale applications

Wang et al.24

BCFL, two-stage Stackelberg game

Blockchain

FL

Clients in determining the lesser computational time.

Malicious clients and servers have the ability to poison federated learning systems

Yazdinejad et al.25

AP2FL

NA

ActPerFL

Robustness, fairness, openness, and integrity of the FL process. Improved precision and successful removal of privacy leaks

Inadequate privacy protection for larger datasets

Hu et al.26

FL-HMChain, FL-CNN-HMChain

Blockchain

FL

Ensuring that the cooperative model training procedure is generally dependable and trustworthy. The suggested model significantly reduces the probability of privacy leaking

More attention must be paid to developing more accurate and dependable prediction models for the medical field

Tian et al.27

PEFL, DP

Blockchain

MFF

PEFL demonstrates better defense against various attack models. Proposed system achieves higher training efficiency while ensuring privacy security

Less support for efficiency, and reliability in data sharing

Asad and Otoum28

BPPFL

Blockchain

IoT, FL

Reduces computation and communication overhead. Highest model accuracy and robust privacy guarantees

Enhancing throughput and reducing latency in the blockchain’s infrastructure