diff --git a/package.json b/package.json
index 45743a6..6f196ab 100644
--- a/package.json
+++ b/package.json
@@ -54,6 +54,7 @@
     "@digitalcredentials/did-context": "^1.0.0",
     "base58-universal": "^2.0.0",
     "base64url-universal": "^2.0.0",
+    "cbor": "^10.0.3",
     "chai": "^4.3.7",
     "chai-string": "^1.5.0",
     "data-integrity-test-suite-assertion": "github:w3c-ccg/data-integrity-test-suite-assertion",
@@ -61,6 +62,7 @@
     "json-canon": "^1.0.1",
     "klona": "^2.0.6",
     "multibase": "^4.0.6",
+    "multiformats": "^13.3.1",
     "mocha": "^10.2.0",
     "uuid": "^9.0.0",
     "varint": "^6.0.0",
diff --git a/tests/90-algorithms-sd.js b/tests/90-algorithms-sd.js
index 4fb3b41..da6db34 100644
--- a/tests/90-algorithms-sd.js
+++ b/tests/90-algorithms-sd.js
@@ -9,6 +9,7 @@ import {
 } from './assertions.js';
 import {
   generateCredential,
+  inspectSdProofValue,
   isValidDatetime,
   proofExists,
   secureCredential,
@@ -43,16 +44,17 @@ describe('Algorithms - Create Base Proof (ecdsa-sd-2023)', function() {
       const [issuer] = endpoints;
       let securedCredential;
       before(async function() {
+        const mandatoryPointers = ['/credentialSubject/name'];
         securedCredential = await secureCredential(
-          {issuer, vc: generateCredential()});
+          {issuer, vc: generateCredential(), mandatoryPointers});
       });
       beforeEach(setupRow);
       it('A data integrity proof (map), or an error, is produced as output.',
         async function() {
           this.test.link = 'https://www.w3.org/TR/vc-di-ecdsa/#create-proof-ecdsa-sd-2023';
           const proof = proofExists(securedCredential);
-          assertDataIntegrityProof(proof, 'ecdsa-sd-2023');
-          // Since we are not sending proof options, we only do a positive test
+          assertDataIntegrityProof(proof);
+          // We only do a positive test
         });
       it('Let proof.proofValue be a base64-url-encoded ' +
         'Multibase value of the proofBytes.',
@@ -77,8 +79,9 @@ describe('Algorithms - Base Proof Transformation (ecdsa-sd-2023)', function() {
       const [issuer] = endpoints;
       let securedCredential;
       before(async function() {
+        const mandatoryPointers = ['/credentialSubject/name'];
         securedCredential = await secureCredential(
-          {issuer, vc: generateCredential()});
+          {issuer, vc: generateCredential(), mandatoryPointers});
       });
       beforeEach(setupRow);
       it('The transformation options MUST contain a type identifier for the ' +
@@ -99,7 +102,14 @@ describe('Algorithms - Base Proof Transformation (ecdsa-sd-2023)', function() {
         'options, such as a JSON-LD document loader.',
       async function() {
         this.test.link = 'https://www.w3.org/TR/vc-di-ecdsa/#transformation-ecdsa-sd-2023';
-        this.skip();
+        // Send an issuance request without mandatoryPointers
+        const securedCredentialNoPointers = await secureCredential(
+          {issuer, vc: generateCredential()});
+        const proof = proofExists(securedCredentialNoPointers);
+        const decodedProof =
+          await inspectSdProofValue(proof);
+        should.exist(decodedProof.mandatoryPointers,
+          'Expected mandatoryPointers to be included in the proofValue.');
       });
       it('Whenever this algorithm encodes strings, it MUST use UTF-8 encoding.',
         async function() {
@@ -112,7 +122,11 @@ describe('Algorithms - Base Proof Transformation (ecdsa-sd-2023)', function() {
         'or 32 bytes.',
       async function() {
         this.test.link = 'https://www.w3.org/TR/vc-di-ecdsa/#transformation-ecdsa-sd-2023';
-        this.skip();
+        const proof = proofExists(securedCredential);
+        const decodedProof = await inspectSdProofValue(proof);
+        decodedProof.hmacKey.length.should.equal(32,
+          'Expected HMAC key to be the same length as the digest size.'
+        );
       });
     });
   }
@@ -126,8 +140,9 @@ describe('Algorithms - Base Proof Configuration (ecdsa-sd-2023)', function() {
       const [issuer] = endpoints;
       let securedCredential;
       before(async function() {
+        const mandatoryPointers = ['/credentialSubject/name'];
         securedCredential = await secureCredential(
-          {issuer, vc: generateCredential()});
+          {issuer, vc: generateCredential(), mandatoryPointers});
       });
       it('The proof options MUST contain a type identifier for the ' +
         'cryptographic suite (type) and MUST contain a cryptosuite ' +
@@ -174,8 +189,9 @@ describe('Algorithms - Base Proof Serialization (ecdsa-sd-2023)', function() {
       const [issuer] = endpoints;
       let securedCredential;
       before(async function() {
+        const mandatoryPointers = ['/credentialSubject/name'];
         securedCredential = await secureCredential(
-          {issuer, vc: generateCredential()});
+          {issuer, vc: generateCredential(), mandatoryPointers});
       });
       beforeEach(setupRow);
       it('The proof options MUST contain a type identifier for the ' +
diff --git a/tests/helpers.js b/tests/helpers.js
index 0d946ca..88fb346 100644
--- a/tests/helpers.js
+++ b/tests/helpers.js
@@ -6,10 +6,15 @@ import * as bs58 from 'base58-universal';
 import * as bs64 from 'base64url-universal';
 import * as didKey from '@digitalbazaar/did-method-key';
 import * as EcdsaMultikey from '@digitalbazaar/ecdsa-multikey';
+import {base64url} from 'multiformats/bases/base64';
+import {bases} from 'multiformats/basics';
 import {CachedResolver} from '@digitalbazaar/did-io';
+import cbor from 'cbor';
 import chai from 'chai';
+import {CID} from 'multiformats/cid';
 import {createRequire} from 'node:module';
 import {contexts as credContexts} from '@digitalbazaar/credentials-context';
+import {expect} from 'chai';
 import {isUtf8} from 'node:buffer';
 import {JsonLdDocumentLoader} from 'jsonld-document-loader';
 import {klona} from 'klona';
@@ -344,3 +349,23 @@ export async function multikeyFromVerificationMethod(
   }
   return null;
 }
+
+export async function inspectSdProofValue(proof) {
+  const proofValue = proof.proofValue;
+  expect(proof.proofValue.startsWith('u')).to.be.true;
+  const cborProof = bases.base64url.decode(proofValue);
+  const decodedProof = await cbor.decodeFirst(cborProof, (error, obj) => {
+    return obj;
+  });
+  const decodedProofValues = decodedProof.value;
+  decodedProofValues.length.should.equal(5,
+    'Expected decoded proof value to be of length 5.'
+  );
+  return {
+    baseSignature: decodedProofValues[0],
+    publicKey: decodedProofValues[1],
+    hmacKey: decodedProofValues[2],
+    signatures: decodedProofValues[3],
+    mandatoryPointers: decodedProofValues[4]
+  };
+}