diff --git a/ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js b/ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js
index 38a1b91dde..08b77c9c1e 100644
--- a/ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js
+++ b/ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js
@@ -659,7 +659,7 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
       const fileDigest = new Uint32Array(HEADER_DIGEST_SIZE / 4);
       sah.read(fileDigest, {at: HEADER_OFFSET_DIGEST});
       const compDigest = this.computeDigest(this.#apBody, flags);
-      //console.warn("getAssociatedPath() compDigest",compDigest);
+      console.warn("getAssociatedPath() flags",flags.toString(16), "compDigest", compDigest);
       if(fileDigest.every((v,i) => v===compDigest[i])){
         // Valid digest
         const pathBytes = this.#apBody.findIndex((v)=>0===v);
@@ -700,7 +700,7 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
       this.#apBody.fill(0, enc.written, HEADER_MAX_PATH_SIZE);
       this.#dvBody.setUint32(HEADER_OFFSET_FLAGS, flags);
       const digest = this.computeDigest(this.#apBody, flags);
-      //console.warn("setAssociatedPath(",path,") digest",digest);
+      console.warn("setAssociatedPath(",path,") digest",digest);
       sah.write(this.#apBody, {at: 0});
       sah.write(digest, {at: HEADER_OFFSET_DIGEST});
       sah.flush();
diff --git a/ext/wasm/tests/opfs/sahpool/digest-worker.js b/ext/wasm/tests/opfs/sahpool/digest-worker.js
new file mode 100644
index 0000000000..5396252a83
--- /dev/null
+++ b/ext/wasm/tests/opfs/sahpool/digest-worker.js
@@ -0,0 +1,95 @@
+/*
+  2025-01-31
+
+  The author disclaims copyright to this source code.  In place of a
+  legal notice, here is a blessing:
+
+  *   May you do good and not evil.
+  *   May you find forgiveness for yourself and forgive others.
+  *   May you share freely, never taking more than you give.
+
+  ***********************************************************************
+
+  This file is part of sahpool-pausing.js's demonstration of the
+  pause/unpause feature of the opfs-sahpool VFS.
+*/
+const clog = console.log.bind(console);
+const wPost = (type,...args)=>postMessage({type, payload:args});
+const log = (...args)=>{
+  clog("Worker:",...args);
+  wPost('log',...args);
+}
+
+const hasOpfs = ()=>{
+  return globalThis.FileSystemHandle
+    && globalThis.FileSystemDirectoryHandle
+    && globalThis.FileSystemFileHandle
+    && globalThis.FileSystemFileHandle.prototype.createSyncAccessHandle
+    && navigator?.storage?.getDirectory;
+};
+if( !hasOpfs() ){
+  wPost('error',"OPFS not detected");
+  throw new Error("OPFS not detected");
+}
+
+clog("Importing sqlite3...");
+const searchParams = new URL(self.location.href).searchParams;
+importScripts(searchParams.get('sqlite3.dir') + '/sqlite3.js');
+
+const runTests = function(sqlite3, poolUtil){
+  const fname = '/my.db';
+  let db = new poolUtil.OpfsSAHPoolDb(fname);
+  let n = (new Date()).valueOf();
+  try {
+    db.exec([
+      "create table if not exists t(a);"
+    ]);
+    db.exec({
+      sql: "insert into t(a) values(?)",
+      bind: n++
+    });
+    log("Record count: ",db.selectValue("select count(*) from t"));
+  }finally{
+    db.close();
+  }
+
+  db = new poolUtil.OpfsSAHPoolDb(fname);
+  try {
+    db.exec({
+      sql: "insert into t(a) values(?)",
+      bind: n++
+    });
+    log("Record count: ",db.selectValue("select count(*) from t"));
+  }finally{
+    db.close();
+  }
+
+  const fname2 = '/my2.db';
+  db = new poolUtil.OpfsSAHPoolDb(fname2);
+  try {
+    db.exec([
+      "create table if not exists t(a);"
+    ]);
+    db.exec({
+      sql: "insert into t(a) values(?)",
+      bind: n++
+    });
+    log("Record count: ",db.selectValue("select count(*) from t"));
+  }finally{
+    db.close();
+  }
+};
+
+globalThis.sqlite3InitModule().then(async function(sqlite3){
+  log("sqlite3 version:",sqlite3.capi.sqlite3_libversion(),
+      sqlite3.capi.sqlite3_sourceid());
+  const sahPoolConfig = {
+    name: 'opfs-sahpool-digest',
+    clearOnInit: false,
+    initialCapacity: 6
+  };
+  return sqlite3.installOpfsSAHPoolVfs(sahPoolConfig).then(poolUtil=>{
+    log('vfs acquired');
+    runTests(sqlite3, poolUtil);
+  });
+});
diff --git a/ext/wasm/tests/opfs/sahpool/digest.html b/ext/wasm/tests/opfs/sahpool/digest.html
new file mode 100644
index 0000000000..c4ba6cc1aa
--- /dev/null
+++ b/ext/wasm/tests/opfs/sahpool/digest.html
@@ -0,0 +1,141 @@
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
+    <link rel="stylesheet" href="../../../common/emscripten.css"/>
+    <link rel="stylesheet" href="../../../common/testing.css"/>
+    <title>sqlite3 tester: OpfsSAHPool Digest</title>
+    <style></style>
+  </head>
+  <body><h1 id='color-target'></h1>
+
+    <p>
+      This is a test app for the digest calculation of the OPFS
+      SAHPool VFS. It requires running it with a new database created using
+      v3.49.0 or older, then running it again with a newer version, then
+      again with 3.49.0 or older.
+    </p>
+    <div class='input-wrapper'>
+      <input type='checkbox' id='cb-log-reverse'>
+      <label for='cb-log-reverse'>Reverse log order?</label>
+    </div>
+    <div id='test-output'></div>
+    <script>
+      /*
+        2025-02-03
+
+        The author disclaims copyright to this source code.  In place of a
+        legal notice, here is a blessing:
+
+        *   May you do good and not evil.
+        *   May you find forgiveness for yourself and forgive others.
+        *   May you share freely, never taking more than you give.
+
+        ***********************************************************************
+
+        This is a bugfix test for the OPFS SAHPool VFS. It requires setting up
+        a database created using v3.49.0 or older, then runnig it again with
+        a newer version.
+      */
+      (function(){
+        'use strict';
+        document.querySelector('h1').innerHTML =
+        document.querySelector('title').innerHTML;
+        const mapToString = (v)=>{
+          switch(typeof v){
+            case 'number': case 'string': case 'boolean':
+            case 'undefined': case 'bigint':
+              return ''+v;
+            default: break;
+          }
+          if(null===v) return 'null';
+          if(v instanceof Error){
+            v = {
+              message: v.message,
+              stack: v.stack,
+              errorClass: v.name
+            };
+          }
+          return JSON.stringify(v,undefined,2);
+        };
+        const normalizeArgs = (args)=>args.map(mapToString);
+        const logTarget = document.querySelector('#test-output');
+        const logClass = function(cssClass,...args){
+          const ln = document.createElement('div');
+          if(cssClass){
+            for(const c of (Array.isArray(cssClass) ? cssClass : [cssClass])){
+              ln.classList.add(c);
+            }
+          }
+          ln.append(document.createTextNode(normalizeArgs(args).join(' ')));
+          logTarget.append(ln);
+        };
+        const cbReverse = document.querySelector('#cb-log-reverse');
+        //cbReverse.setAttribute('checked','checked');
+        const cbReverseKey = 'tester1:cb-log-reverse';
+        const cbReverseIt = ()=>{
+          logTarget.classList[cbReverse.checked ? 'add' : 'remove']('reverse');
+          //localStorage.setItem(cbReverseKey, cbReverse.checked ? 1 : 0);
+        };
+        cbReverse.addEventListener('change', cbReverseIt, true);
+        /*if(localStorage.getItem(cbReverseKey)){
+          cbReverse.checked = !!(+localStorage.getItem(cbReverseKey));
+          }*/
+        cbReverseIt();
+
+        const log = (...args)=>{
+          //console.log(...args);
+          logClass('',...args);
+        }
+        const warn = (...args)=>{
+          console.warn(...args);
+          logClass('warning',...args);
+        }
+        const error = (...args)=>{
+          console.error(...args);
+          logClass('error',...args);
+        };
+
+        const toss = (...args)=>{
+          error(...args);
+          throw new Error(args.join(' '));
+        };
+
+        const endOfWork = (passed=true)=>{
+          const eH = document.querySelector('#color-target');
+          const eT = document.querySelector('title');
+          if(passed){
+            log("End of work chain. If you made it this far, you win.");
+            eH.innerText = 'PASS: '+eH.innerText;
+            eH.classList.add('tests-pass');
+            eT.innerText = 'PASS: '+eT.innerText;
+          }else{
+            eH.innerText = 'FAIL: '+eH.innerText;
+            eH.classList.add('tests-fail');
+            eT.innerText = 'FAIL: '+eT.innerText;
+          }
+        };
+
+        log("Running opfs-sahpool digest tests...");
+        const W1 = new Worker('digest-worker.js?sqlite3.dir=../../../jswasm');
+        W1.onmessage = function({data}){
+          //log("onmessage:",data);
+          switch(data.type){
+            case 'log':
+              log('worker says:', ...data.payload);
+              break;
+            case 'error':
+              error('worker says:', ...data.payload);
+              endOfWork(false);
+              break;
+            case 'initialized':
+              log(data.workerId, ': Worker initialized',...data.payload);
+              break;
+          }
+        };
+      })();
+    </script>
+  </body>
+</html>
diff --git a/manifest b/manifest
index 05212cec00..638b314db7 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Initial\swork\son\sa\sfix\sfor\sthe\sSAHPool\sVFS's\seffectively-no-op\sdigest\scalculation,\sas\sreported\sin\s[https://github.com/sqlite/sqlite-wasm/issues/97|ticket\s#97\sof\sthe\sdownstream\snpm\ssubproject].\sThis\srequires\smore\stesting\salongside\sdatabases\screated\sbefore\sthis\sversion\sto\sensure\sthat\sit's\sbackwards-compatible.
-D 2025-02-03T16:26:30.488
+C Add\sa\stest\sapp\sto\sassist\sin\svalidating\sthe\sSAHPool\sdigest\scalculation\sfix.
+D 2025-02-03T17:21:54.248
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md e108e1e69ae8e8a59e93c455654b8ac9356a11720d3345df2a4743e9590fb20d
@@ -645,7 +645,7 @@ F ext/wasm/api/sqlite3-api-worker1.c-pp.js 5cc22a3c0d52828cb32aad8691488719f47d2
 F ext/wasm/api/sqlite3-license-version-header.js 0c807a421f0187e778dc1078f10d2994b915123c1223fe752b60afdcd1263f89
 F ext/wasm/api/sqlite3-opfs-async-proxy.js 3774befd97cd1a5e2895c8225a894aad946848c6d9b4028acc988b5d123475af
 F ext/wasm/api/sqlite3-vfs-helper.c-pp.js 3f828cc66758acb40e9c5b4dcfd87fd478a14c8fb7f0630264e6c7fa0e57515d
-F ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js 2635b4c7f63a8ab496bcff91cb33a890d060e979c34d34e5c782d970fdbce36d
+F ext/wasm/api/sqlite3-vfs-opfs-sahpool.c-pp.js d1d17004bfee7a9159b56888b83345c6219262448297a81966faae4fd28f749c
 F ext/wasm/api/sqlite3-vfs-opfs.c-pp.js 9b86ca2d8276cf919fbc9ba2a10e9786033b64f92c2db844d951804dee6c4b4e
 F ext/wasm/api/sqlite3-vtab-helper.c-pp.js e809739d71e8b35dfe1b55d24d91f02d04239e6aef7ca1ea92a15a29e704f616
 F ext/wasm/api/sqlite3-wasm.c 6f9d8529072d072359cd22dc5dfb0572c524684686569cfbd0f9640d7619fc10
@@ -700,6 +700,8 @@ F ext/wasm/tester1.c-pp.js 005a94be87b888ca33aff130aeaef58045781ebfb92e559063d14
 F ext/wasm/tests/opfs/concurrency/index.html 657578a6e9ce1e9b8be951549ed93a6a471f4520a99e5b545928668f4285fb5e
 F ext/wasm/tests/opfs/concurrency/test.js d08889a5bb6e61937d0b8cbb78c9efbefbf65ad09f510589c779b7cc6a803a88
 F ext/wasm/tests/opfs/concurrency/worker.js 0a8c1a3e6ebb38aabbee24f122693f1fb29d599948915c76906681bb7da1d3d2
+F ext/wasm/tests/opfs/sahpool/digest-worker.js cdf4bb6dad5e274985e4b0022d0d85f9e782df03352044d8c7c22532845d7304
+F ext/wasm/tests/opfs/sahpool/digest.html 83d0c2f1dd6fe83e9088c603091514ac8549ee04a4632d8cc51d27fd094f05b3
 F ext/wasm/wasmfs.make 68999f5bd8c489239592d59a420f8c627c99169bbd6fa16a404751f757b9f702
 F magic.txt 5ade0bc977aa135e79e3faaea894d5671b26107cc91e70783aa7dc83f22f3ba0
 F main.mk 8cfe182232ac7bbc87530792db6f31c09f2a2f35e9887d0412978746efe42ea9
@@ -2209,11 +2211,8 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P d693c2dddbd10a2e0b77893b04b11502e30b768f1b06814105f7f35172845fb9
-R f5d8b5467421514674c485e5d9d6f1f0
-T *branch * sahpool-digest
-T *sym-sahpool-digest *
-T -sym-trunk * Cancelled\sby\sbranch.
+P 9234c33f92d92bfddc6211c9c587f1072e70837c0ffe1416ef7d84d59bacd364
+R 176b17e8248aa3df480fb81ba267bf4c
 U stephan
-Z fa5f726034dfcd33aa64a420eace023f
+Z 9279d9607c28db362f757a9d03a072e6
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 0ea45d1c37..fef85d18dd 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-9234c33f92d92bfddc6211c9c587f1072e70837c0ffe1416ef7d84d59bacd364
+a1e304b8020025cc73a658bd8c7697d59b4f3ad96cac0a3e36553a3207d13dc6