Block chain is innovative technology that gives 100 %trust and allows consumers and suppliers to connect directly. Block chain is the distributed ledger technologies that can be programmed to record and track anything of value and stands to revolutionize the way we interact with each other and  distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way. https://socialprachar.com/what-is-block-chain-technology/?ref=blogtraffic/keerthi

accounts receivable ledger, accounts payable ledger, notes receivable ledger, notes payable ledger and equipment subsidiary ledger

General ledger is just another name given to nominal ledger. Nominal ledger is a ledger that maintains impersonal accounts like sale , purchase, capital etc.

What is in incoming ledger

Another name for the General Ledger is Nominal Ledger.