diff --git a/index.html b/index.html
index 86b0d6640..db8263d77 100644
--- a/index.html
+++ b/index.html
@@ -55,7 +55,6 @@
             company: "Spec-Ops", companyURL: "https://spec-ops.io/",
             w3cid: "44770" }
         ],
-
         // authors, add as many as you like.
         // This is optional, uncomment if you have authors as well as editors.
         // only "name" is required. Same format as editors.
@@ -66,7 +65,6 @@
           { name: "Dave Longley", url: "http://digitalbazaar.com/",
             company: "Digital Bazaar", companyURL: "http://digitalbazaar.com/"}
         ],
-
         // name of the WG
         wg:           "Verifiable Claims Working Group",
 
@@ -653,6 +651,70 @@ <h1>Basic Concepts</h1>
 toward the end of the document.
       </p>
 
+      <section>
+        <h2>Contexts</h2>
+
+        <p>
+When two software systems need to exchange data, they must use terminology
+that both systems understand. A useful analogy is to think about how two
+people communicate; both people must use the same language and the words
+that each of them use must mean the same thing to the other party. This
+specification uses the <code>@context</code> property to express the context
+of the conversation.
+        </p>
+
+        <dl>
+          <dt><dfn>@context</dfn></dt>
+          <dd>
+The value of this property MUST be one or more URIs where first URI is the
+value <code>https://w3.org/2018/credentials/v1</code>.
+If more than one URI is provided, the URIs MUST be interpreted as an
+ordered set. It is RECOMMENDED that dereferencing the URI results in a
+document containing machine-readable information about the context.
+          </dd>
+        </dl>
+
+        <pre class="example nohighlight" title="Usage of the @context property">
+{
+  <span class="highlight">"@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ]</span>,
+  "id": "http://dmv.example.gov/credentials/3732",
+  "type": ["VerifiableCredential", "ProofOfAgeCredential"],
+  "claim": {
+    "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
+    "ageOver": 21
+  },
+  "proof": { ... }
+}
+        </pre>
+
+        <p>
+The example above uses the base context
+(<code>https://w3.org/2018/credentials/v1</code>) to establish that the
+conversation is about a Verififiable Credential. It then adds an additional
+context (<code>https://example.com/examples/v1</code>) to establish that the
+conversation will also be about examples.
+        </p>
+
+        <p class="note">
+This document uses the Example Context
+(<code>https://example.com/examples/v1</code>) for the purposes of
+demonstrating examples. The Example Context MUST NOT be used for any other
+purpose such as in pilot or production systems.
+        </p>
+
+        <p>
+The data available at <code>https://w3.org/2018/credentials/v1</code>
+is a static document that is never updated and MAY be downloaded and
+cached. The associated human-readable vocabulary document for the
+Verifiable Credentials Data Model can be found at the following URL:
+<a href="https://w3.org/2018/credentials">https://w3.org/2018/credentials</a>.
+This concept is expanded upon in Section <a href="#extensibility"></a>.
+        </p>
+      </section>
+
       <section>
         <h2>Identifiers</h2>
 
@@ -682,7 +744,7 @@ <h2>Identifiers</h2>
 
         <pre class="example nohighlight" title="Usage of the 'id' property">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": "https://w3.org/2018/credentials/v1",
   <span class="highlight">"id": "http://dmv.example.gov/credentials/3732"</span>,
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   "claim": {
@@ -740,7 +802,10 @@ <h2>Types</h2>
 
         <pre class="example nohighlight" title="Usage of the type property">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://dmv.example.gov/credentials/3732",
   <span class="highlight">"type": ["VerifiableCredential", "ProofOfAgeCredential"]</span>,
   "claim": {
@@ -882,7 +947,10 @@ <h2>Issuer</h2>
         </dl>
         <pre class="example nohighlight" title="Usage of issuer properties">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://dmv.example.gov/credentials/3732",
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   <span class="highlight">"issuer": "https://dmv.example.gov/issuers/14"</span>,
@@ -915,7 +983,10 @@ <h2>Proofs (e.g., Signatures)</h2>
         <pre class="example nohighlight"
           title="Usage of proof property on a verifiable credential">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://example.gov/credentials/3732",
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   "issuer": "https://dmv.example.gov",
@@ -963,7 +1034,10 @@ <h2>Expiration</h2>
 
         <pre class="example nohighlight" title="Usage of expirationDate property">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://dmv.example.gov/credentials/3732",
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   "issuer": "https://dmv.example.gov/issuers/14",
@@ -1018,7 +1092,10 @@ <h2>Status</h2>
 
         <pre class="example nohighlight" title="Usage of status property">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://dmv.example.gov/credentials/3732",
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   "issuer": "https://dmv.example.gov/issuers/14",
@@ -1059,7 +1136,10 @@ <h2>Presentations</h2>
 
         <pre class="example nohighlight" title="Basic structure of a presentation">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "urn:uuid:3978344f-8596-4c3a-a978-8fcaba3903c5",
   "type": ["VerifiablePresentation"],
   <span class="highlight">"verifiableCredential": [{ ... }],
@@ -1165,7 +1245,10 @@ <h2>Extensibility</h2>
 
         <pre class="example nohighlight" title="A simple credential">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://example.com/credentials/4643",
   "type": ["VerifiableCredential"],
   "issuer": "https://example.com/issuers/14",
@@ -1215,7 +1298,7 @@ <h2>Extensibility</h2>
           title="A verifiable credential with a custom extension">
 {
   "@context": <span class="highlight">[
-    </span>"https://w3id.org/credentials/v1",
+    </span>"https://w3.org/2018/credentials/v1",
     <span class="highlight">"https://example.com/contexts/mycontext.jsonld"
   ]</span>,
   "id": "http://example.com/credentials/4643",
@@ -1298,7 +1381,7 @@ <h3>Semantic Interoperability</h3>
   "@context": {
     "referenceNumber": "https://example.com/vocab#referenceNumber",
     <span class="highlight">"claim": {
-      "@id": "https://w3id.org/credentials#claim",
+      "@id": "https://w3.org/2018/credentials#claim",
       "@context": {
         "favoriteFood": "https://example.com/vocab#favoriteFood"
       }
@@ -1351,7 +1434,7 @@ <h2>Refreshing</h2>
         <pre class="example nohighlight" title="Usage of termsOfUse property by an Issuer">
 {
   "@context": [
-    "https://w3id.org/credentials/v1",
+    "https://w3.org/2018/credentials/v1",
     "https://example.org/motorlicense/v1"
   ],
   "id": "http://dmv.example.gov/credentials/3732",
@@ -1424,7 +1507,7 @@ <h2>Terms of Use</h2>
         <pre class="example nohighlight" title="Usage of termsOfUse property by an Issuer">
 {
   "@context": [
-    "https://w3id.org/credentials/v1",
+    "https://w3.org/2018/credentials/v1",
     "https://example.org/motorlicense/v1"
   ],
   "id": "http://dmv.example.gov/credentials/3732",
@@ -1458,7 +1541,7 @@ <h2>Terms of Use</h2>
         <pre class="example nohighlight" title="Usage of termsOfUse property by a Holder">
 {
   "@context": [
-    "https://w3id.org/credentials/v1",
+    "https://w3.org/2018/credentials/v1",
     "https://example.org/motorlicense/v1"
   ],
   "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
@@ -1548,7 +1631,7 @@ <h2>Evidence</h2>
         <pre class="example nohighlight" title="Usage of evidence property">
 {
   "@context": [
-    "https://w3id.org/credentials/v1",
+    "https://w3.org/2018/credentials/v1",
     "https://example.org/motorlicense/v1"
   ],
   "id": "http://dmv.example.gov/credentials/3732",
@@ -1642,7 +1725,7 @@ <h2>Credential Uniquely Identifies Subject</h2>
       <pre class="example nohighlight" title="An example of a credential
 that uniquely identifies a subject">
 {
-  "@context": ["https://w3id.org/credentials/v1", "https://schema.org/"]
+  "@context": ["https://w3.org/2018/credentials/v1", "https://schema.org/"]
   "id": "http://dmv.example.gov/credentials/332",
   "type": ["VerifiableCredential", "IdentityCredential"],
   "issuer": "https://dmv.example.gov/issuers/4",
@@ -2004,7 +2087,10 @@ <h2>Disputes</h2>
         <pre class="example nohighlight"
           title="Expressing a disputed credential">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://example.com/credentials/245",
   "type": ["VerifiableCredential", "DisputeCredential"],
   <span class="highlight">"claim": {
@@ -2180,7 +2266,7 @@ <h3>JSON Web Token</h3>
     "aud": "www.example.com",
     "sub": "did:example:ebfeb1f712ebc6f1c276e12ec21",
     "verifiableCredential": {
-      "@context": "https://w3id.org/security/v1",
+      "@context": "https://w3.org/2018/security/v1",
       "id": "http://example.gov/credentials/3732",
       "type": ["VerifiableCredential", "ProofOfAgeCredential"],
       "issuer": "https://dmv.example.gov",
@@ -2226,7 +2312,12 @@ <h2>JSON-LD</h2>
 processing a <a>verifiable credential</a> or <a>verifiable presentation</a>,
 and a <code>@context</code> property is not present at the top-level of the
 JSON-LD document, then a <code>@context</code> property with a value of
-<code>https://w3id.org/credentials/v1</code> MUST be assumed.
+<code>https://w3.org/2018/credentials/v1</code> MUST be assumed. The
+JSON-LD Context available at <code>https://w3.org/2018/credentials/v1</code>
+is a static document that is never updated and may thus be downloaded and
+cached client side. The associated vocabulary document for the
+Verifiable Credentials Data Model can be found at the following URL:
+<code>https://w3.org/2018/credentials</code>.
         </p>
 
       </section>
@@ -2706,7 +2797,10 @@ <h3>Bearer Credentials</h3>
 
         <pre class="example nohighlight" title="Usage of issuer properties">
 {
-  "@context": "https://w3id.org/credentials/v1",
+  "@context": [
+    "https://w3.org/2018/credentials/v1",
+    "https://example.com/examples/v1"
+  ],
   "id": "http://dmv.example.gov/credentials/temporary/28934792387492384",
   "type": ["VerifiableCredential", "ProofOfAgeCredential"],
   "issuer": "https://dmv.example.gov/issuers/14",
diff --git a/vocab/context.jsonld b/vocab/context.jsonld
index 3fe82f7c6..856ea4b4b 100644
--- a/vocab/context.jsonld
+++ b/vocab/context.jsonld
@@ -3,11 +3,11 @@
     {
       "@version": 1.1
     },
-    "https://w3id.org/security/v1",
+    "https://w3.org/2018/security/v1",
     {
       "id": "@id",
       "type": "@type",
-      "cred": "https://w3id.org/credentials#",
+      "cred": "https://w3.org/2018/credentials#",
       "dc": "http://purl.org/dc/terms/",
       "schema": "http://schema.org/",
       "xsd": "http://www.w3.org/2001/XMLSchema#",
diff --git a/vocab/credentials.html b/vocab/credentials.html
index 8e01d7611..f01d93a44 100755
--- a/vocab/credentials.html
+++ b/vocab/credentials.html
@@ -10,7 +10,7 @@
     specStatus:  "base",
     shortName:   "vc-vocab",
     publishDate: "2018-07-25",
-    thisVersion: "http://w3id.org/credentials",
+    thisVersion: "http://w3.org/2018/credentials",
     doJsonLd:    true,
     //edDraftURI: "https://w3c.github.io/vc-vocab/",
     // lcEnd: "3000-01-01",
@@ -72,7 +72,7 @@
       .bold {font-weight: bold;}
     </style>
   </head>
-  <body resource="https://w3id.org/credentials#" typeof="owl:Ontology" prefix="cred: https://w3id.org/credentials#">
+  <body resource="https://w3.org/2018/credentials#" typeof="owl:Ontology" prefix="cred: https://w3.org/2018/credentials#">
     <section id="abstract">
       <p>This document describes the
         <span property="dc:title">Verifiable Claims Vocabulary</span>
@@ -89,7 +89,7 @@
         <dt>Published:</dt><dd><time property="dc:date">2018-07-25</time></dd>
         <dt>Imports:</dt>
           <dd><a href="http://purl.org/dc/terms/" property="owl:imports">http://purl.org/dc/terms/</a></dd>
-          <dd><a href="https://w3id.org/security" property="owl:imports">https://w3id.org/security</a></dd>
+          <dd><a href="https://w3.org/2018/security" property="owl:imports">https://w3.org/2018/security</a></dd>
         <dt>Version Info:</dt>
         <dd><a href="" property="owl:versionInfo"></a></dd>
         <dt>See Also:</dt>
@@ -107,11 +107,11 @@ <h2>Introduction</h2>
       <p>This specification makes use of the following namespaces:</p>
       <dl class="terms">
         <dt><code>cred</code>:</dt>
-        <dd><code>https://w3id.org/credentials#</code></dd>
+        <dd><code>https://w3.org/2018/credentials#</code></dd>
         <dt><code>dc</code>:</dt>
         <dd><code>http://purl.org/dc/terms/</code></dd>
         <dt><code>sec</code>:</dt>
-        <dd><code>https://w3id.org/security#</code></dd>
+        <dd><code>https://w3.org/2018/security#</code></dd>
         <dt><code>xsd</code>:</dt>
         <dd><code>http://www.w3.org/2001/XMLSchema#</code></dd>
       </dl>
@@ -291,7 +291,7 @@ <h2>Term Definitions</h2>
         </dd>
         <dt>cred</dt>
         <dd>
-            https://w3id.org/credentials#
+            https://w3.org/2018/credentials#
         </dd>
         <dt>credentialStatus</dt>
         <dd>
diff --git a/vocab/credentials.jsonld b/vocab/credentials.jsonld
index e5ea79e0b..6c4f6326b 100755
--- a/vocab/credentials.jsonld
+++ b/vocab/credentials.jsonld
@@ -3,11 +3,11 @@
     {
       "@version": 1.1
     },
-    "https://w3id.org/security/v1",
+    "https://w3.org/2018/security/v1",
     {
       "id": "@id",
       "type": "@type",
-      "cred": "https://w3id.org/credentials#",
+      "cred": "https://w3.org/2018/credentials#",
       "dc": "http://purl.org/dc/terms/",
       "schema": "http://schema.org/",
       "xsd": "http://www.w3.org/2001/XMLSchema#",
@@ -140,7 +140,7 @@
         "@type": "@id"
       }
     },
-    "@id": "https://w3id.org/credentials#",
+    "@id": "https://w3.org/2018/credentials#",
     "@type": "owl:Ontology",
     "dc:title": {
       "en": "Verifiable Claims Vocabulary"
@@ -151,7 +151,7 @@
     "dc:date": "2018-07-25",
     "owl:imports": [
       "http://purl.org/dc/terms/",
-      "https://w3id.org/security"
+      "https://w3.org/2018/security"
     ],
     "rdfs:seeAlso": [
       "https://www.w3.org/TR/verifiable-claims-data-model/"
diff --git a/vocab/credentials.ttl b/vocab/credentials.ttl
index 606819069..db5818d04 100755
--- a/vocab/credentials.ttl
+++ b/vocab/credentials.ttl
@@ -2,7 +2,7 @@
 @prefix owl: <http://www.w3.org/2002/07/owl#> .
 @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
 @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
-@prefix cred: <https://w3id.org/credentials#> .
+@prefix cred: <https://w3.org/2018/credentials#> .
 @prefix schema: <http://schema.org/> .
 @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
 
@@ -11,7 +11,7 @@ cred: a owl:Ontology;
   dc:title "Verifiable Claims Vocabulary"@en;
   dc:description """This document describes the RDFS vocabulary description used for Verifiable Claims [[verifiable-claims-data-model]] along with the default JSON-LD Context."""@en;
   dc:date "2018-07-25"^^xsd:date;
-  dc:imports <http://purl.org/dc/terms/>, <https://w3id.org/security>;
+  dc:imports <http://purl.org/dc/terms/>, <https://w3.org/2018/security>;
   rdfs:seeAlso <https://www.w3.org/TR/verifiable-claims-data-model/>;
 
 # Class definitions
diff --git a/vocab/template.html b/vocab/template.html
index 03a3098ad..4902d7e90 100755
--- a/vocab/template.html
+++ b/vocab/template.html
@@ -10,7 +10,7 @@
     specStatus:  "base",
     shortName:   "vc-vocab",
     publishDate: "<%=ont["dc:date"]%>",
-    thisVersion: "http://w3id.org/credentials",
+    thisVersion: "http://w3.org/2018/credentials",
     doJsonLd:    true,
     //edDraftURI: "https://w3c.github.io/vc-vocab/",
     // lcEnd: "3000-01-01",
@@ -112,11 +112,11 @@ <h2>Introduction</h2>
       <p>This specification makes use of the following namespaces:</p>
       <dl class="terms">
         <dt><code>cred</code>:</dt>
-        <dd><code>https://w3id.org/credentials#</code></dd>
+        <dd><code>https://w3.org/2018/credentials#</code></dd>
         <dt><code>dc</code>:</dt>
         <dd><code>http://purl.org/dc/terms/</code></dd>
         <dt><code>sec</code>:</dt>
-        <dd><code>https://w3id.org/security#</code></dd>
+        <dd><code>https://w3.org/2018/security#</code></dd>
         <dt><code>xsd</code>:</dt>
         <dd><code>http://www.w3.org/2001/XMLSchema#</code></dd>
       </dl>
diff --git a/vocab/vocab.csv b/vocab/vocab.csv
index 8298f90d0..ffd77109a 100644
--- a/vocab/vocab.csv
+++ b/vocab/vocab.csv
@@ -1,11 +1,11 @@
 id,type,label,subClassOf,domain,range,@type,@container,comment
-,@context,,https://w3id.org/security/v1,,,,,
-cred,prefix,,https://w3id.org/credentials#,,,,,
+,@context,,https://w3.org/2018/security/v1,,,,,
+cred,prefix,,https://w3.org/2018/credentials#,,,,,
 dc,prefix,,http://purl.org/dc/terms/,,,,,
 schema,prefix,,http://schema.org/,,,,,
 xsd,prefix,,http://www.w3.org/2001/XMLSchema#,,,,,
 ,owl:imports,,http://purl.org/dc/terms/,,,,,
-,owl:imports,,https://w3id.org/security,,,,,
+,owl:imports,,https://w3.org/2018/security,,,,,
 ,rdfs:seeAlso,,https://www.w3.org/TR/verifiable-claims-data-model/,,,,,
 claim,rdf:Property,claim,,VerifiableCredential,,@id,@graph,A statement made about a `subject`.
 issuer,rdf:Property,issuer,,VerifiableCredential,,@id,,The value of this property MUST be a URI. It is RECOMMENDED that dereferencing the URI results in a document containing machine-readable information about the issuer that may be used to verify the information expressed in the `credential`.