sketched the idea

src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/application/InitService.kt

@@ -0,0 +1,9 @@
+package org.domaindrivenarchitecture.provs.desktop.application
+
+import org.domaindrivenarchitecture.provs.desktop.domain.GitTrust
+
+class InitService {
+    fun init():List<GitTrust> {
+
+    }
+}

src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/domain/GitTrust.kt

@@ -0,0 +1,20 @@
+package org.domaindrivenarchitecture.provs.desktop.domain
+
+class GitTrusts(val trusts: List<GitTrust>) {
+    constructor():this(listOf<GitTrust>(
+        GitTrust("github.com", setOf(
+            "SHA256:uNiVztksCsDhcc0u9e8BujQXVUpKZIDTMczCvj3tD2s github.com",  // (RSA)
+            "SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM github.com",  // (ECDSA)
+            "SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU github.com"   // (Ed25519)
+        )),
+        GitTrust("gitlab.com", setOf(
+            "gitlab.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAfuCHKVTjquxvt6CM6tdG4SLp1Btn/nOeHHE5UOzRdf",
+            "gitlab.com ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCsj2bNKTBSpIYDEGk9KxsGh3mySTRgMtXL583qmBpzeQ+jqCMRgBqB98u3z++J1sKlXHWfM9dyhSevkMwSbhoR8XIq/U0tCNyokEi/ueaBMCvbcTHhO7FcwzY92WK4Yt0aGROY5qX2UKSeOvuP4D6TPqKF1onrSzH9bx9XUf2lEdWT/ia1NEKjunUqu1xOB/StKDHMoX4/OKyIzuS0q/T1zOATthvasJFoPrAjkohTyaDUz2LN5JoH839hViyEG82yB+MjcFV5MU3N1l1QL3cVUCh93xSaua1N85qivl+siMkPGbO5xR/En4iEY6K2XPASUEMaieWVNTRCtJ4S8H+9",
+            "gitlab.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBFSMqzJeV9rUzU4kWitGjeR4PWSa29SPqJ1fVkhtj3Hw9xjLVXVYrU9QlYWrOLXBpQ6KWjbjTDTdDkoohFzgbEY=",
+        ))
+    )) {}
+}
+
+class GitTrust(hostName: String, fingerprints: Set<String>) {
+
+}