diff --git a/src/Metadata.js b/src/Metadata.js
index 8ae72cd..c11e4a4 100644
--- a/src/Metadata.js
+++ b/src/Metadata.js
@@ -8,7 +8,7 @@ class ManifestMetadata {
     date = '';
     imageAuthor = '';
     license = 'CC BY-NC-ND 4.0';
-    copyright = 'BNN/CNR-ISPC';
+    copyright = "Ministero della Cultura (Biblioteca Nazionale 'Vittorio Emanuele III' di Napoli)/CNR-Istituto di Scienze del Patrimonio Culturale";
 
     /**
      * @todo Maybe this doesn't make any sense??
diff --git a/src/common.js b/src/common.js
index 5f561de..3f7f8da 100644
--- a/src/common.js
+++ b/src/common.js
@@ -20,9 +20,8 @@ const authors = {
 	DAN: 'Danilo P. Pavone',
 };
 /**
- * 
  * @param {string} imgFilename 
- * @returns {object}
+ * @returns {{papyrus:string,imageAuthor:string,date:string}}
  */
 function extractNIRMetadata(imgFilename) {
 	return {
@@ -32,15 +31,27 @@ function extractNIRMetadata(imgFilename) {
 	}
 }
 /**
- * 
  * @param {string} imgFilename 
- * @returns {object}
+ * @returns {{papyrus:string,imageAuthor:string,date:string,copyright:string}}
  */
-function extractDNOMetadata(imgFilename) {
+function extractDNMetadata(imgFilename) {
 	return {
 		papyrus: imgFilename.split('_')[1],
 		imageAuthor: '',
 		date: '',
+		copyright: "Ministero della Cultura (Biblioteca Nazionale 'Vittorio Emanuele III' di Napoli)",
+	}
+}
+/**
+ * @param {string} imgFilename 
+ * @returns {{papyrus:string,imageAuthor:string,date:string,copyright:string}}
+ */
+function extractDOMetadata(imgFilename) {
+	return {
+		papyrus: imgFilename.split('_')[1],
+		imageAuthor: '',
+		date: '',
+		copyright: "The Bodleian Libraries, University of Oxford",
 	}
 }
 /**
@@ -63,6 +74,7 @@ Common.getParamsFromFolders = async function() {
 }
 /**
  * @param {string} manifestId 
+ * @returns {string[]}
  */
 Common.getImageList = async function (manifestId) {
     let folderName = manifestId.replace(/pherc-(\d+)-(\w+)$/, function (_match, g1, g2) {
@@ -105,6 +117,7 @@ Common.getImageSize = async function (imageId) {
 /**
  * Get image name for given canvas
  * @param {Canvas} canvas
+ * @returns {string}
  */
 Common.getImageName = async function (canvas) {
     const images = await this.getImageList(canvas.resourceId);
@@ -117,7 +130,7 @@ Common.getImageName = async function (canvas) {
  * Create a canvas from an image filename
  * @param {Manifest} manifest 
  * @param {string} filename The image filename 
- * @returns 
+ * @returns {Canvas}
  */
 Common.createCanvas = async function (manifest, filename) {
 	let canvas = new Canvas(
@@ -199,12 +212,13 @@ Common.createMetadata = function (manifest, imgFilename) {
 /**
  * @param {string} imgFilename 
  * @param {string} technique 
+ * @returns {{papyrus:string,imageAuthor:string,date:string,copyright:?string}}
  */
 Common.getMetadataFromImgName = function (imgFilename, technique) {
 	const extractor = {
 		nir: extractNIRMetadata,
-		dn: extractDNOMetadata,
-		do: extractDNOMetadata,
+		dn: extractDNMetadata,
+		do: extractDOMetadata,
 	}
 
 	return extractor[technique](imgFilename);