Abstract: A commercial credit scoring method which enables a perfectly anonymous commercial transaction on a site built on a computer network. A person intended to newly participate as a seller or purchaser in a commercial transaction on the site is certified as a transactor when the person satisfies a given condition. A rank of the certified transactor is determined based on a given company data including at least one of a capital, sales amount, and transaction history about the transactor. A transaction limit in the transaction of the transactor is determined based on the rank, and a restraint is placed on the transaction when the amount of the transaction exceeds the transaction limit of the seller or purchaser. It is possible to perform an electronic commerce entirely in a perfectly anonymous manner including the business discussion, contract, settlement, and delivery.

Abstract: A commercial credit scoring method which enables a perfectly anonymous commercial transaction on a site built on a computer network. A person intended to newly participate as a seller or purchaser in a commercial transaction on the site is certified as a transactor when the person satisfies a given condition. A rank of the certified transactor is determined based on a given company data including at least one of a capital, sales amount, and transaction history about the transactor. A transaction limit in the transaction of the transactor is determined based on the rank, and a restraint is placed on the transaction when the amount of the transaction exceeds the transaction limit of the seller or purchaser. It is possible to perform an electronic commerce entirely in a perfectly anonymous manner including the business discussion, contract, settlement, and delivery.