. . . . . . . . . . . "Linked timestamping is a type of trusted timestamping where issued time-stamps are related to each other." . . . . "Linked timestamping" . . . "986492854"^^ . . . . . . . . . . . . . . . . . . . . . . . . "13352"^^ . . "Linked timestamping is a type of trusted timestamping where issued time-stamps are related to each other." . . "25372042"^^ . . . . . . . .