diff --git a/src/app/model/data-store.ts b/src/app/model/data-store.ts
index 78834609..9d71c842 100644
--- a/src/app/model/data-store.ts
+++ b/src/app/model/data-store.ts
@@ -2,16 +2,19 @@ import { ActivityStore } from './activity-store';
 import { Progress } from './types';
 import { MetaStore, MetaStrings } from './meta-store';
 import { ProgressStore } from './progress-store';
+import { EvidenceData, EvidenceStore } from './evidence-store';
 
 export class DataStore {
   public meta: MetaStore | null = null;
   public activityStore: ActivityStore | null = null;
   public progressStore: ProgressStore | null = null;
+  public evidenceStore: EvidenceStore | null = null;
 
   constructor() {
     this.meta = new MetaStore();
     this.activityStore = new ActivityStore();
     this.progressStore = new ProgressStore();
+    this.evidenceStore = new EvidenceStore();
   }
 
   public addActivities(activities: ActivityStore): void {
@@ -20,6 +23,9 @@ export class DataStore {
   public addProgressData(progress: Progress): void {
     this.progressStore?.addProgressData(progress);
   }
+  public addEvidenceData(evidence: EvidenceData): void {
+    this.evidenceStore?.addEvidenceData(evidence);
+  }
 
   public getMetaStrings(): MetaStrings {
     if (this.meta == null) {
diff --git a/src/app/model/evidence-store.ts b/src/app/model/evidence-store.ts
new file mode 100644
index 00000000..8d25a131
--- /dev/null
+++ b/src/app/model/evidence-store.ts
@@ -0,0 +1,199 @@
+import { YamlService } from '../service/yaml-loader/yaml-loader.service';
+import { Uuid } from './types';
+
+export interface EvidenceAttachment {
+  type: string; // e.g. 'document', 'image', 'link'
+  externalLink: string; // URL
+}
+
+export interface EvidenceEntry {
+  id: string; // stable UUID for this entry
+  teams: string[];
+  title: string;
+  evidenceRecorded: string; // ISO date string
+  reviewer?: string;
+  description: string;
+  attachment?: EvidenceAttachment[];
+}
+
+export type EvidenceData = Record<Uuid, EvidenceEntry[]>;
+
+const LOCALSTORAGE_KEY: string = 'evidence';
+
+export class EvidenceStore {
+  private yamlService: YamlService = new YamlService();
+  private _evidence: EvidenceData = {};
+
+  // ─── Lifecycle ────────────────────────────────────────────
+
+  public initFromLocalStorage(): void {
+    const stored = this.retrieveStoredEvidence();
+    if (stored) {
+      this.addEvidenceData(stored);
+    }
+  }
+
+  // ─── Accessors ────────────────────────────────────────────
+
+  public getEvidenceData(): EvidenceData {
+    return this._evidence;
+  }
+
+  public getEvidence(activityUuid: Uuid): EvidenceEntry[] {
+    return this._evidence[activityUuid] || [];
+  }
+
+  public hasEvidence(activityUuid: Uuid): boolean {
+    return (this._evidence[activityUuid]?.length || 0) > 0;
+  }
+
+  public getEvidenceCount(activityUuid: Uuid): number {
+    return this._evidence[activityUuid]?.length ?? 0;
+  }
+
+  public getTotalEvidenceCount(): number {
+    let count = 0;
+    for (const uuid in this._evidence) {
+      count += this._evidence[uuid].length;
+    }
+    return count;
+  }
+
+  public getActivityUuidsWithEvidence(): Uuid[] {
+    return Object.keys(this._evidence).filter(uuid => this._evidence[uuid].length > 0);
+  }
+
+  // ─── Mutators ────────────────────────────────────────────
+
+  public addEvidenceData(newEvidence: EvidenceData): void {
+    if (!newEvidence) return;
+
+    for (const activityUuid in newEvidence) {
+      if (!this._evidence[activityUuid]) {
+        this._evidence[activityUuid] = [];
+      }
+
+      const newEntries = newEvidence[activityUuid];
+      if (Array.isArray(newEntries)) {
+        for (const entry of newEntries) {
+          if (!this.isDuplicateEntry(activityUuid, entry)) {
+            this._evidence[activityUuid].push(entry);
+          }
+        }
+      }
+    }
+  }
+
+  public replaceEvidenceData(data: EvidenceData): void {
+    this._evidence = data;
+    this.saveToLocalStorage();
+  }
+
+  public addEvidence(activityUuid: Uuid, entry: EvidenceEntry): void {
+    if (!this._evidence[activityUuid]) {
+      this._evidence[activityUuid] = [];
+    }
+    this._evidence[activityUuid].push(entry);
+    this.saveToLocalStorage();
+  }
+
+  public updateEvidence(
+    activityUuid: Uuid,
+    entryId: string,
+    updatedEntry: Partial<EvidenceEntry>
+  ): void {
+    const entries = this._evidence[activityUuid];
+    if (!entries) {
+      console.warn(`No evidence found for activity ${activityUuid}`);
+      return;
+    }
+    const index = entries.findIndex(e => e.id === entryId);
+    if (index === -1) {
+      console.warn(`Cannot find evidence with id ${entryId} for activity ${activityUuid}`);
+      return;
+    }
+    // Immutable update for Angular change detection
+    entries[index] = { ...entries[index], ...updatedEntry };
+    this.saveToLocalStorage();
+  }
+
+  public deleteEvidence(activityUuid: Uuid, entryId: string): void {
+    const entries = this._evidence[activityUuid];
+    if (!entries) {
+      console.warn(`No evidence found for activity ${activityUuid}`);
+      return;
+    }
+    const index = entries.findIndex(e => e.id === entryId);
+    if (index === -1) {
+      console.warn(`Cannot find evidence with id ${entryId} for activity ${activityUuid}`);
+      return;
+    }
+    entries.splice(index, 1);
+
+    if (entries.length === 0) {
+      delete this._evidence[activityUuid];
+    }
+    this.saveToLocalStorage();
+  }
+
+  public renameTeam(oldName: string, newName: string): void {
+    console.log(`Renaming team '${oldName}' to '${newName}' in evidence store`);
+    for (const uuid in this._evidence) {
+      this._evidence[uuid].forEach(entry => {
+        entry.teams = entry.teams.map(t => (t === oldName ? newName : t));
+      });
+    }
+    this.saveToLocalStorage();
+  }
+
+  // ─── Serialization ──────────────────────────────────────
+
+  public asYamlString(): string {
+    return this.yamlService.stringify({ evidence: this._evidence });
+  }
+
+  public saveToLocalStorage(): void {
+    const yamlStr = this.asYamlString();
+    localStorage.setItem(LOCALSTORAGE_KEY, yamlStr);
+  }
+
+  public deleteBrowserStoredEvidence(): void {
+    console.log('Deleting evidence from browser storage');
+    localStorage.removeItem(LOCALSTORAGE_KEY);
+  }
+
+  public retrieveStoredEvidenceYaml(): string | null {
+    return localStorage.getItem(LOCALSTORAGE_KEY);
+  }
+
+  public retrieveStoredEvidence(): EvidenceData | null {
+    const yamlStr = this.retrieveStoredEvidenceYaml();
+    if (!yamlStr) return null;
+
+    const parsed = this.yamlService.parse(yamlStr);
+    return parsed?.evidence ?? null;
+  }
+
+  // ─── Helpers ─────────────────────────────────────────────
+
+  private isDuplicateEntry(activityUuid: Uuid, entry: EvidenceEntry): boolean {
+    const existing = this._evidence[activityUuid];
+    if (!existing) return false;
+
+    return existing.some(
+      e =>
+        e.description === entry.description &&
+        e.evidenceRecorded === entry.evidenceRecorded &&
+        e.reviewer === entry.reviewer
+    );
+  }
+  public static todayDateString(): string {
+    const now = new Date();
+    return now.toISOString().substring(0, 10);
+  }
+
+  // to be used when creating new evidence entries to ensure they have a stable UUID
+  public static generateId(): string {
+    return crypto.randomUUID?.() ?? `${Date.now()}-${Math.random().toString(36).substring(2, 9)}`;
+  }
+}
diff --git a/src/assets/YAML/team-evidence.yaml b/src/assets/YAML/team-evidence.yaml
new file mode 100644
index 00000000..c6a846fd
--- /dev/null
+++ b/src/assets/YAML/team-evidence.yaml
@@ -0,0 +1,2 @@
+  # Export team evidence from the browser, and replace this file
+evidence: