Table 3. Comprehensive evaluation of projects in blockchain development era and blockchain as a platform era.
| Studies | Blockchain type | Platform | Consensus | EHR storage | Performance evaluation |
Patient monitoring |
Disease prediction (AI) |
|---|---|---|---|---|---|---|---|
| Liu et al. (2019) | Private | N/A | DpoS | On chain: Private | Based on EHR sharing-Blockchain | – | - |
| IBM’s Medical-Blockchain | Private | Hyperledger | N/A | Off chain: Cloud | Based on EHR sharing-Blockchain | – | - |
| Al Omar et al. (2019) | Private | Ethereum | N/A | On chain: Permissioned | Based on EHR sharing-Blockchain | – | - |
| Tanwar, Parekh & Evans (2020) | Private | Hyperledger | BET | On chain: Private | Based on EHR sharing-Blockchain | - | - |
| Niu et al. (2020) | Private | Ethereum | PoW | Off chain: Local cloud | Based on attribute-Based Encryption | - | - |
| Veeramakali et al. (2021) | Private | N/A | N/A | On chain: Private | Based on prediction model |
+ | + |
| Połap, Srivastava & Yu (2021) | Private | N/A | N/A | Off chain: Database | Based on operation of learning agent | + | + |
| Chen et al. (2021) | Private | N/A | N/A | Interplanetary File System | Based on prediction model |
+ | + |
| Arul et al. (2021) | N/A | N/A | N/A | Off chain: Database | Based on EHR sharing-Blockchain | + | + |