# SEAIS: Secure and Efficient Agricultural Image Storage Combining Blockchain and Satellite Networks
## 2 Related Works
### Blockchain-Based Agricultural Data Storage Scheme  
Blockchain is mostly used for trusted storage, deposit, and traceability of agricultural data. [PERSON] et al. [29] proposed a storage method for agricultural monitoring data based on blockchain, which mainly focused on storage and privacy protection solutions. The scheme stored encrypted data in the cloud and stored hash value in the blockchain, which addresses the issue of insufficient local storage space caused by the increasing volume of monitoring data. [PERSON] et al. [30] proposed the Agri-SCM-BIoT architecture, which combines blockchain and IoT to optimize storage and scalability in the agricultural supply chain. This architecture addresses the interoperability, security, and privacy issues present in current single-chain agricultural supply chain systems. [PERSON] et al. [31] explored the use of an aerial blockchain approach for storing images to ensure secure data transmission in Air-Ground Integrated Networks. [PERSON] et al. [32] proposed a dual-blockchain scheme based on IPFS storage for agricultural IoT sampling data protection. The scheme combines IPFS networks and Ethereum, achieving efficient and secure data storage and retrieval. [PERSON] et al. [33] used blockchain to create a decentralized platform for storing image data in air-to-ground IoT heterogeneous networks, addressing security issues by ensuring data integrity and security.  
In summary, blockchain is currently used more for agricultural data storage. The research focused on performance optimization, privacy protection, and supply chain management. However, there are no studies yet on the verifiable storage of images.  
Table 1 compares the existing solutions, showing that existing agricultural image data acquisition primarily relies on ground-based equipment and UAVs, which provide high-precision images but are limited in remote areas or extreme environments. Satellite imaging, with its wide coverage and high frequency, can offer continuous monitoring of large farmlands. However, satellite image data is vast and complex, and current research lacks effective mechanisms to verify its integrity and authenticity. The decentralized and tamper-proof nature of blockchain offers a promising solution, but research on verifiable storage for agricultural images remains limited.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Related Works**} & **Image Acquisition** & **Storage** & **Verifiable** & \multirow{2}{*}{**Scalability**} \\  & **Method** & **Method** & **Storage** & \\ \hline \multirow{2}{*}{[19]} & Ground Equipment & Local & \multirow{2}{*}{\(\times\)} & Low \\  & & Storage & & \\ \multirow{2}{*}{[20,22]} & UAV Imaging & Cloud & \multirow{2}{*}{\(\times\)} & High \\  & & Storage & & \\ \multirow{2}{*}{[31,33]} & Ground Equipment + & \multirow{2}{*}{Blockchain} & ✓ & Low \\  & UAV Imaging & & & \\ \multirow{2}{*}{SEAIS} & Ground Equipment + & IPFS + & \multirow{2}{*}{\(\check{\surd}\)} & High \\  & UAV + Satellite Imaging & & & \\ \hline \hline \end{tabular}
\end{table}
Table 1: Comparison of related works.