问题 In hyperledger fabric, suppose there is a channel, 'channel_12' between org1 and org2 and another channel, 'channel_13' between org1 and org3. Suppose there are 2 users, 'Org1User1' & 'Org1User2' in org1. Can we restrict the access of Org1User1 to channel_12 and that of Org1User2 to channel_13? 回答1: One way with which we can achieve this is: While enrolling the user we can set the attributes in the X509 certificate for the user about which channel he has access to. For this, we need to