Del. Code tit. 6 § 3103
The Division of Revenue shall number the certificates when filed, consecutively, and endorse thereon the date of filing, and electronically record such filings in a registry which the Division of Revenue shall create for that purpose, which is named "Sole Proprietorship, Partnership and Association Trade Name Registry," the trade name and title of the person, firm or association, the date of the filing of the certificate, the date of the formation or change in the formation of the firm or association, and the number thereof. For the filing and making of the entries, the Division of Revenue shall collect from the person filing the certificate a fee of $25.00, which amounts shall be credited to the account of the Division of Revenue to be disposed of in the same manner as other fees which are by law payable to the Division of Revenue.
6 Del. C. § 3103