Symmetric　searchable　encryption　(SSE)　can　retrieve　encrypted　data　without　disclosing　user　privacy　and　has　been　widely　studied　and　applied　in　cloud　storage.　However,　in　SSE　schemes,　semi-honest　or　dishonest　servers　may　tamper　with　the　data　in　files　and　return　the　untrusted　files　to　users,　so　it　is　necessary　to　verify　these　files.　Most　existing　verifiable　SSE　schemes　are　verified　by　the　users　locally,　and　malicious　users　may　forge　verification　results,　which　cannot　ensure　verification　fairness.　To　this　end,　this　study　proposes　a　verifiable　dynamic　symmetric　searchable　encryption　scheme　based　on　blockchain,　VDSSE).　VDSSE　employs　symmetric　encryption　to　achieve　forward　security　in　the　dynamic　updating,　and　on　this　basis,　the　blockchain　is　utilized　to　verify　the　search　results.　During　the　verification,　a　new　verification　tag,　Vtag,　is　proposed.　The　accumulation　of　Vtag　is　leveraged　to　compress　the　verification　information,　reduce　the　storage　cost　of　verification　information　on　the　blockchain,　and　effectively　support　the　dynamic　verification　of　SSE　schemes.　Finally,　experimental　evaluation　and　security　analysis　are　conducted　on　VDSSE　to　verify　the　feasibility　and　security　of　the　scheme.　©　2023　Chinese　Academy　of　Sciences.　All　rights　reserved.