# Digital Content Management Using Non-Fungible Tokens and the Interplanetary File System
## 4 Digital Content Management (DCM) System
### Discussion  
Certain characteristics of NFTs facilitate straightforward asset creation, enabling seamless verification of ownership rights through uncomplicated processes. Their inherent advantages encompass resilience against forgery, intricate traceability, and the facilitation of fractional transactions. In terms of preventing forgery, NFTs mitigate the depreciation of digital assets by rendering the replication of critical data--such as origin, ownership details, and transaction chronicles--challenging. As for traceability, the transparent nature of blockchain data permits anyone to authenticate the origin, issuance time, quantity, and ownership history of NFTs. Ownership authentication and traceability are ensured through decentralized blockchain storage, facilitating easy recovery in case of loss. Additionally, NFTs introduce the concept of fractional ownership, converting illiquid assets into liquid ones by acknowledging partial ownership of assets. Table 2 presents an analysis of NFTs from a security standpoint, outlining threats such as spoofing, tampering, repudiation, information disclosure, and denial-of-service (DoS) attacks. Table 2 demonstrates how it has provided clues to address existing issues following this study. In response to threats from tampering with data external to the existing blockchain, the proposed method enables buyers to share both original and hashed data, allowing for early detection of manipulation. Moreover, the issue of combining hashed data with attackers' addresses has been resolved through the utilization of multi-signature usage. In addressing concerns related to transaction exploitation, they have employed privacy-preserving smart contract policies. Spoofing poses a risk wherein attackers exploit authentication vulnerabilities, potentially pilfering users' private keys. However, the safeguarding of NFT private keys can be achieved through the secure utilization of smart contracts and cold wallets. In scenarios where an NFT's blockchain data are stored externally, there exists a susceptibility to tampering by malicious entities. Yet, sharing both the original and hashed data with the buyer allows verification through hash comparison, thus detecting any tampering attempts. Mitigating the threat of repudiation attacks--wherein attackers combine hashed data with their own address--can be accomplished through the implementation of a multi-signature method. Additionally, the security threat posed by information disclosure, arising from the exploitation of hashes and transactions by attackers, can be mitigated by adopting privacy-centric smart contracts. Consequently, addressing the issue of NFT aging errors stemming from design flaws can be tackled by rigorously verifying the smart contracts in use. To achieve scalability and time efficiency in research focusing on managing digital content using non-fungible tokens (NFTs) and the interplanetary file system (IPFS), there are several elements required in terms of technical specifications and infrastructure, as shown in Table 3. \begin{table}
\begin{tabular}{c c c} \hline \hline
**Type** & **Potential Security Threat** & **Solution** \\ \hline Spoofing & Abuse authentication & Employ NFT-enabled smart contracts/cold wallets \\ \hline Tampering & Manipulate data outside the & Share both original and \\  & blockchain & hashed data with buyers \\ \hline Repudiation & Combining the hash data with the & \\  & attacker’s address & Use multiple signatures \\ \hline Information Disclosure & Attackers exploit hashes and & Apply privacy-protecting \\  & transactions & smart contracts \\ \hline Evaluation of Privilege & NFT property errors caused by & Validation of smart contracts \\ \hline \hline \end{tabular}
\end{table} 
Table 2: NFT security threats and solutions.