The implementation of this disclosure isBlock chain domain name of first block chain instanceIdentify the first block chain instance within the integrated block chain network and the repeater linked communicatively with the second block chain instance;Identifying block chain domain names for a second block chain instanceAccess request for accessing a second block chain instanceReceiving from the node of the first block chain instance;Access requestIncluding block chain domain names for a second block chain instanceTo receive andIdentifying the chain identifier of the second block chain instance based on the block chain domain name of the second block chain instance;The chain identifier of the second block chain instance isShows a block chain network configuration of a second block chain instanceIdentifying andIncluding providing access to a second block chain instance to a first block chain instance based on a block chain network configuration indicated by the chain identifier of the second block chain instance.
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