diff --git a/lib/facts/blob-service.js b/lib/facts/blob-service.js
new file mode 100644
--- /dev/null
+++ b/lib/facts/blob-service.js
@@ -0,0 +1,7 @@
+// @flow
+
+const config = {
+  url: 'https://blob.commtechnologies.org',
+};
+
+export default config;
diff --git a/lib/utils/blob-service.js b/lib/utils/blob-service.js
new file mode 100644
--- /dev/null
+++ b/lib/utils/blob-service.js
@@ -0,0 +1,39 @@
+// @flow
+
+import invariant from 'invariant';
+
+import blobServiceConfig from '../facts/blob-service.js';
+
+const BLOB_SERVICE_URI_PREFIX = 'comm-blob-service://';
+
+function makeBlobServiceURI(holder: string): string {
+  return `${BLOB_SERVICE_URI_PREFIX}${holder}`;
+}
+
+function isBlobServiceURI(uri: string): boolean {
+  return uri.startsWith(BLOB_SERVICE_URI_PREFIX);
+}
+
+function holderFromBlobServiceURI(uri: string): string {
+  invariant(isBlobServiceURI(uri), 'Not a blob service URI');
+  return uri.slice(BLOB_SERVICE_URI_PREFIX.length);
+}
+
+function holderFromURI(uri: string): ?string {
+  if (!isBlobServiceURI(uri)) {
+    return null;
+  }
+  return holderFromBlobServiceURI(uri);
+}
+
+function getBlobFetchableURL(holder: string): string {
+  return `${blobServiceConfig.url}/blob/${holder}`;
+}
+
+export {
+  makeBlobServiceURI,
+  isBlobServiceURI,
+  holderFromURI,
+  holderFromBlobServiceURI,
+  getBlobFetchableURL,
+};