Public Blockchain

A public blockchain is a decentralized, permissionless distributed ledger technology. Its core characteristic, as defined in ISO 22739:2020, is that anyone can join the network, read the entire history of transactions, and participate in the consensus process. This openness ensures high transparency and data immutability. From an enterprise risk management (ERM) perspective, its primary risks stem from this transparency. Publicly visible transaction data can lead to breaches of privacy regulations like GDPR or Taiwan's PDPA if it contains personally identifiable information (PII). Furthermore, the irreversibility of transactions creates operational risks, as errors cannot be easily corrected. This contrasts with permissioned (private or consortium) blockchains, which offer greater control over privacy and governance by restricting participation to authorized entities.

In ERM, public blockchains are primarily applied to enhance supply chain traceability, leveraging transparency to mitigate information asymmetry risks. A typical implementation involves three steps: 1) Data Risk Assessment: Classify supply chain data according to regulations like GDPR. Non-sensitive data (e.g., batch numbers) is placed on-chain, while sensitive data is hashed or stored off-chain. 2) Privacy-Enhanced Design: Implement controls like Zero-Knowledge Proofs in smart contracts, allowing partners to verify claims without revealing underlying confidential data. 3) On-Chain Monitoring: Establish automated tools to monitor for anomalies, such as counterfeit goods entering the supply chain, triggering real-time alerts. For example, food industry leaders use public blockchains to track high-value products, reducing traceability time from days to seconds and improving audit pass rates.

Taiwan enterprises face three key challenges: 1) Regulatory Uncertainty: The permanent and public nature of on-chain data potentially conflicts with the "right to be forgotten" under GDPR and Taiwan's PDPA. The solution is a hybrid model, storing sensitive data off-chain while placing only its cryptographic hash on-chain for verification. 2) Technical Complexity & Talent Shortage: Integrating blockchain with legacy ERP and SCM systems is difficult, and there is a scarcity of talent skilled in smart contract security. Mitigation involves using Blockchain-as-a-Service (BaaS) platforms with APIs to simplify development and partnering with external experts for pilot projects. 3) Performance and Cost: Public blockchains often have low transaction throughput (TPS) and volatile fees (gas), making them unsuitable for high-frequency enterprise use. The strategy is to adopt Layer 2 scaling solutions, which can significantly reduce costs and increase transaction speed.

Winners Consulting specializes in public blockchain for Taiwan enterprises, delivering compliant management systems within 90 days. Free consultation: https://winners.com.tw/contact