diff --git a/README.md b/README.md
index e578451c3..ad39c8489 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,6 @@ Repository | Reference | Recent Version
 [ansi-colors][ansi-colorsGHUrl] | [Documentation][ansi-colorsDOCUrl] | [![NPM version][ansi-colorsNPMVersionImage]][ansi-colorsNPMUrl]
 [async][asyncGHUrl] | [Documentation][asyncDOCUrl] | [![NPM version][asyncNPMVersionImage]][asyncNPMUrl]
 [aws-sdk][aws-sdkGHUrl] | [Documentation][aws-sdkDOCUrl] | [![NPM version][aws-sdkNPMVersionImage]][aws-sdkNPMUrl]
-[base62][base62GHUrl] | [Documentation][base62DOCUrl] | [![NPM version][base62NPMVersionImage]][base62NPMUrl]
 [body-parser][body-parserGHUrl] | [Documentation][body-parserDOCUrl] | [![NPM version][body-parserNPMVersionImage]][body-parserNPMUrl]
 [bootstrap][bootstrapGHUrl] | [Documentation][bootstrapDOCUrl] | [![NPM version][bootstrapNPMVersionImage]][bootstrapNPMUrl]
 [bootstrap-markdown][bootstrap-markdownGHUrl] | [Documentation][bootstrap-markdownDOCUrl] | [![NPM version][bootstrap-markdownNPMVersionImage]][bootstrap-markdownNPMUrl]
@@ -147,11 +146,6 @@ Outdated dependencies list can also be achieved with `$ npm outdated`
 [aws-sdkNPMUrl]: https://www.npmjs.com/package/aws-sdk
 [aws-sdkNPMVersionImage]: https://img.shields.io/npm/v/aws-sdk.svg?style=flat
 
-[base62GHUrl]: https://github.com/base62/base62.js
-[base62DOCUrl]: https://github.com/base62/base62.js/blob/master/Readme.md
-[base62NPMUrl]: https://www.npmjs.com/package/base62
-[base62NPMVersionImage]: https://img.shields.io/npm/v/base62.svg?style=flat
-
 [body-parserGHUrl]: https://github.com/expressjs/body-parser
 [body-parserDOCUrl]: https://github.com/expressjs/body-parser/blob/master/README.md
 [body-parserNPMUrl]: https://www.npmjs.com/package/body-parser
diff --git a/controllers/scriptStorage.js b/controllers/scriptStorage.js
index d0183811f..de74ffa39 100644
--- a/controllers/scriptStorage.js
+++ b/controllers/scriptStorage.js
@@ -27,7 +27,6 @@ var mediaType = require('media-type');
 var mediaDB = require('mime-db');
 var async = require('async');
 var moment = require('moment');
-var Base62 = require('base62/lib/ascii');
 var SPDX = require('spdx-license-ids');
 var sizeOf = require('image-size');
 var ipRangeCheck = require("ip-range-check");
@@ -570,6 +569,7 @@ exports.sendScript = function (aReq, aRes, aNext) {
 
     var lastModified = null;
     var eTag = null;
+    var hashSRI = null;
     var maxAge = 7 * 60 * 60 * 24; // nth day(s) in seconds
     var now = null;
     var continuation = true;
@@ -628,6 +628,10 @@ exports.sendScript = function (aReq, aRes, aNext) {
       }
     }
 
+    hashSRI = aScript.hash
+      ? 'sha512-' + Buffer.from(aScript.hash).toString('base64')
+      : 'undefined';
+
     // HTTP/1.1 Caching
     aRes.set('Cache-Control', 'public, max-age=' + maxAge +
       ', no-cache, no-transform, must-revalidate');
@@ -639,8 +643,8 @@ exports.sendScript = function (aReq, aRes, aNext) {
       lastModified = moment(aScript.updated)
         .utc().format('ddd, DD MMM YYYY HH:mm:ss') + ' GMT';
 
-      // Convert a based representation of the hex sha512sum
-      eTag = '"'  + Base62.encode(parseInt('0x' + aScript.hash, 16)) + ' .user.js"';
+      // Use SRI of the stored sha512sum
+      eTag = '"'  + hashSRI + ' .user.js"';
 
       // If already client-side... HTTP/1.1 Caching
       if (aReq.get('if-none-match') === eTag || aReq.get('if-modified-since') === lastModified) {
@@ -796,10 +800,12 @@ exports.sendScript = function (aReq, aRes, aNext) {
             } else {
               source = result.code;
 
-              // Calculate a based representation of the hex sha512sum
-              eTag = '"'  + Base62.encode(
-                parseInt('0x' + crypto.createHash('sha512').update(source).digest('hex'), 16)) +
-                  ' .min.user.js"';
+              // Calculate SRI of the source sha512sum
+              eTag = '"sha512-' +
+                Buffer.from(
+                  crypto.createHash('sha512').update(source).digest('hex')
+                ).toString('base64') + ' .min.user.js"';
+
             }
           } catch (aE) { // On any failure default to unminified
             if (isDev) {
@@ -827,8 +833,8 @@ exports.sendScript = function (aReq, aRes, aNext) {
             lastModified = moment(aScript.updated)
               .utc().format('ddd, DD MMM YYYY HH:mm:ss') + ' GMT';
 
-            // Reset to convert a based representation of the hex sha512sum
-            eTag = '"'  + Base62.encode(parseInt('0x' + aScript.hash, 16)) + ' .user.js"';
+            // Reset SRI of the stored sha512sum
+            eTag = '"'  + hashSRI + ' .user.js"';
           }
 
           // If already client-side... partial HTTP/1.1 Caching
@@ -928,8 +934,8 @@ exports.sendMeta = function (aReq, aRes, aNext) {
       meta = script.meta; // NOTE: Watchpoint
 
       if (/\.json$/.test(aReq.params.scriptname)) {
-        // Create a based representation of the hex sha512sum
-        eTag = '"'  + Base62.encode(parseInt('0x' + aScript.hash, 16)) + ' .meta.json"';
+        // Use SRI of the stored sha512sum
+        eTag = '"'  + script.hashSRI + ' .meta.json"';
 
         // If already client-side... HTTP/1.1 Caching
         if (aReq.get('if-none-match') === eTag) {
@@ -955,7 +961,7 @@ exports.sendMeta = function (aReq, aRes, aNext) {
         // Overwrite any keys found with the following...
         meta.OpenUserJS.installs = [{ value: script.installs }];
         meta.OpenUserJS.issues =  [{ value: 'n/a' }];
-        meta.OpenUserJS.hash = aScript.hash ? [{ value: aScript.hash }] : undefined;
+        meta.OpenUserJS.hash = script.hash ? [{ value: script.hashSRI }] : 'undefined';
 
         // Get the number of open issues
         scriptOpenIssueCountQuery = Discussion.find({ category: exports
@@ -966,8 +972,8 @@ exports.sendMeta = function (aReq, aRes, aNext) {
         async.parallel(tasks, asyncComplete);
 
       } else {
-        // Create a based representation of the hex sha512sum
-        eTag = '"'  + Base62.encode(parseInt('0x' + aScript.hash, 16)) + ' .meta.js"';
+        // Use SRI of the stored sha512sum
+        eTag = '"'  + script.hashSRI + ' .meta.js"';
 
         // If already client-side... HTTP/1.1 Caching
         if (aReq.get('if-none-match') === eTag) {
diff --git a/libs/modelParser.js b/libs/modelParser.js
index 27cf6e04a..9767751c5 100644
--- a/libs/modelParser.js
+++ b/libs/modelParser.js
@@ -489,7 +489,14 @@ var parseScript = function (aScript) {
   parseDateProperty(script, 'updated');
 
   // Hash
-  script.hashShort = script.hash ? script.hash.substr(0, 7) : 'undefined';
+  script.hashShort = 'undefined';
+  script.hashSRI = 'undefined';
+
+  if (script.hash) {
+     // NOTE: May be absent in dev DB but should not be in pro DB
+    script.hashShort = script.hash.substr(0, 7);
+    script.hashSRI = 'sha512-' + Buffer.from(script.hash).toString('base64');
+  }
 
   if (script.created && script.updated && script.created.toString() !== script.updated.toString()) {
     script.isUpdated = true;
diff --git a/package.json b/package.json
index 4def7cb12..e52d2843d 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,6 @@
     "async": "3.2.0",
     "@octokit/auth-oauth-app": "4.3.0",
     "aws-sdk": "2.944.0",
-    "base62": "2.0.1",
     "body-parser": "1.19.0",
     "bootstrap": "3.4.1",
     "bootstrap-markdown": "2.10.0",
diff --git a/views/pages/scriptPage.html b/views/pages/scriptPage.html
index cce6bc0a6..2938a9ea5 100644
--- a/views/pages/scriptPage.html
+++ b/views/pages/scriptPage.html
@@ -27,7 +27,7 @@
 
             <div class="script-meta">
               <p><i class="fa fa-fw fa-clock-o"></i> <b>Published:</b> <time datetime="{{script.createdISOFormat}}" title="{{script.created}}">{{script.createdHumanized}}</time></p>
-              <p><i class="fa fa-fw fa-history"></i> <b>Version:</b> <code>{{script.meta.UserScript.version.0.value}}<span title="SHA-512 {{script.hash}}">+{{script.hashShort}}</span></code>{{#script.isUpdated}} updated <time class="script-updated" datetime="{{script.updatedISOFormat}}" title="{{script.updated}}">{{script.updatedHumanized}}</time>{{/script.isUpdated}}</p>
+              <p><i class="fa fa-fw fa-history"></i> <b>Version:</b> <code>{{script.meta.UserScript.version.0.value}}<span title="{{script.hashSRI}}">+{{script.hashShort}}</span></code>{{#script.isUpdated}} updated <time class="script-updated" datetime="{{script.updatedISOFormat}}" title="{{script.updated}}">{{script.updatedHumanized}}</time>{{/script.isUpdated}}</p>
               {{#script.description}}<p><i class="fa fa-fw fa-info"></i> <b>Summary:</b> {{script.description}}</p>{{/script.description}}
               {{#script.hasGroups}}
                 <span>