. . . . . . . "12967138"^^ . . . . . . . "ISO/IEC 18014 Information technology \u2014 Security techniques \u2014 Time-stamping services is an international standard that specifies time-stamping techniques. It comprises four parts: \n* Part 1: Framework \n* Part 2: Mechanisms producing independent tokens \n* Part 3: Mechanisms producing linked tokens \n* Part 4: Traceability of time sources"@en . . . "ISO/IEC 18014 Information technology \u2014 Security techniques \u2014 Time-stamping services is an international standard that specifies time-stamping techniques. It comprises four parts: \n* Part 1: Framework \n* Part 2: Mechanisms producing independent tokens \n* Part 3: Mechanisms producing linked tokens \n* Part 4: Traceability of time sources"@en . "2705"^^ . . . . . . . . . . . . . "1089321756"^^ . . . . . . . "ISO/IEC 18014"@en . . . . . . . .