Due to the immutable nature of blockchains, illegal information on a blockchain cannot be deleted separately. To prevent illegal information from being uploaded to a blockchain, we recommend that you integrate Alibaba Cloud Blockchain as a Service (BaaS) with Alibaba Cloud Content Moderation. When you specify parameters to call a smart contract by using a REST API, the Alibaba Cloud Content Moderation service automatically reviews the parameter settings to prevent illegal information from being uploaded to a blockchain.
Integrate Alibaba Cloud BaaS with Alibaba Cloud Content Moderation
Note: Before you integrate Alibaba Cloud BaaS with Alibaba Cloud Content Moderation, you must install the cloud service integration module and access the blockchain network by using a REST API.
Find the target organization in the My Organizations section and click Cloud service integration on the right side.
Click the Content Moderation tab.
Click Condition detection to check the status of cloud service integration.
If you have not enabled the Alibaba Cloud Content Moderation service, click Enable service.
If you have not authorized Alibaba Cloud BaaS to access the Content Moderation service, click Authorization Service to authorize Alibaba Cloud BaaS.
If the following figure appears, the integration is complete. You can check the data you want to upload to a blockchain by referring to Sample procedure for uploading data to a blockchain or the API document Launch On-chain Transactions.