diff --git a/devbox.json b/devbox.json
new file mode 100644
index 00000000..d8469df3
--- /dev/null
+++ b/devbox.json
@@ -0,0 +1,9 @@
+{
+  "$schema":  "https://raw.githubusercontent.com/jetify-com/devbox/0.14.0/.schema/devbox.schema.json",
+  "packages": ["bikeshed@latest"],
+  "shell": {
+    "init_hook": [
+        "alias bikeshed='bikeshed --no-update'",
+    ]
+  }
+}
diff --git a/devbox.lock b/devbox.lock
new file mode 100644
index 00000000..4632445a
--- /dev/null
+++ b/devbox.lock
@@ -0,0 +1,72 @@
+{
+  "lockfile_version": "1",
+  "packages": {
+    "bikeshed@latest": {
+      "last_modified": "2025-05-06T08:06:31Z",
+      "resolved": "github:NixOS/nixpkgs/1cb1c02a6b1b7cf67e3d7731cbbf327a53da9679#bikeshed",
+      "source": "devbox-search",
+      "version": "5.1.2",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/byk7ag1k1mxrn0k2xdik7rzln600d39h-bikeshed-5.1.2",
+              "default": true
+            },
+            {
+              "name": "dist",
+              "path": "/nix/store/x7p41gi116xfdn43qyzx61yamwyhaqxk-bikeshed-5.1.2-dist"
+            }
+          ],
+          "store_path": "/nix/store/byk7ag1k1mxrn0k2xdik7rzln600d39h-bikeshed-5.1.2"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/5nwp942h6mni220dzqbcqb04mxnh6mfc-bikeshed-5.1.2",
+              "default": true
+            },
+            {
+              "name": "dist",
+              "path": "/nix/store/jjrv0vwvnnjpd6wisb8b3xg24rxz5zwp-bikeshed-5.1.2-dist"
+            }
+          ],
+          "store_path": "/nix/store/5nwp942h6mni220dzqbcqb04mxnh6mfc-bikeshed-5.1.2"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/vwh4hjpd0r9zw4fxdwjb6z1x9l39jmq9-bikeshed-5.1.2",
+              "default": true
+            },
+            {
+              "name": "dist",
+              "path": "/nix/store/rk3091z67f5mamqywgasm1y9ghfmyizl-bikeshed-5.1.2-dist"
+            }
+          ],
+          "store_path": "/nix/store/vwh4hjpd0r9zw4fxdwjb6z1x9l39jmq9-bikeshed-5.1.2"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/l80hk33mi0wsynwl12livkc6c3sqj0bd-bikeshed-5.1.2",
+              "default": true
+            },
+            {
+              "name": "dist",
+              "path": "/nix/store/gpxy88dizvl00fj10r4dbh0qa10ham5r-bikeshed-5.1.2-dist"
+            }
+          ],
+          "store_path": "/nix/store/l80hk33mi0wsynwl12livkc6c3sqj0bd-bikeshed-5.1.2"
+        }
+      }
+    },
+    "github:NixOS/nixpkgs/nixpkgs-unstable": {
+      "resolved": "github:NixOS/nixpkgs/b3582c75c7f21ce0b429898980eddbbf05c68e55?lastModified=1746576598&narHash=sha256-FshoQvr6Aor5SnORVvh%2FZdJ1Sa2U4ZrIMwKBX5k2wu0%3D"
+    }
+  }
+}
diff --git a/proposals/primer/authorization-agent.bs b/proposals/primer/authorization-agent.bs
index 2da04cca..6b20b6d9 100644
--- a/proposals/primer/authorization-agent.bs
+++ b/proposals/primer/authorization-agent.bs
@@ -97,7 +97,6 @@ shape tree assigned to the Data Registration.
   line-start: 1
   line-highlight: 3
   </pre>
-  </pre>
   <figcaption>Data Registration for projects in one of Alice's Data Registries</figcaption>
 </figure>
 
@@ -188,8 +187,8 @@ Its main purpose is to make [[#access-grant]] available to the registered agent.
 
 ## Social Agent Registration
 
-Social Agent Registration is created for a Social Agent. Besides [[##access-grant]]
-it can also reference a [[#reciprocal-registration]]
+Social Agent Registration is created for a Social Agent. Besides [[#access-grant]]
+it can also reference a [[#reciprocal-registration]].
 
 ### Reciprocal Registration ### {#reciprocal-registration}
 
diff --git a/proposals/primer/data-grant.bs b/proposals/primer/data-grant.bs
index 97e08d88..7da7b633 100644
--- a/proposals/primer/data-grant.bs
+++ b/proposals/primer/data-grant.bs
@@ -21,6 +21,9 @@ Data Grant can be consider as the most important data structure, it provides fol
 : dataOwner
 :: Social Agent who owns the data
 
+: grantedBy
+:: Social Agent who granted the access
+
 : registeredShapeTree
 :: Shape Tree used by related Data Registration
 
diff --git a/proposals/primer/snippets/auth.alice.example/cd247a67-0879-4301-abd0-828f63abb252.ttl b/proposals/primer/snippets/auth.alice.example/cd247a67-0879-4301-abd0-828f63abb252.ttl
index dbbd16b0..9f1d18f2 100644
--- a/proposals/primer/snippets/auth.alice.example/cd247a67-0879-4301-abd0-828f63abb252.ttl
+++ b/proposals/primer/snippets/auth.alice.example/cd247a67-0879-4301-abd0-828f63abb252.ttl
@@ -7,6 +7,7 @@ PREFIX alice-pro: <https://pro.alice.example/>
 alice-auth:cd247a67-0879-4301-abd0-828f63abb252
   a interop:DataGrant ;
     interop:dataOwner <https://alice.example/#id> ;
+    interop:grantedBy <https://alice.example/#id> ;
     interop:registeredShapeTree solidtrees:Project ;
     interop:hasDataRegistration alice-pro:773605f0-b5bf-4d46-878d-5c167eac8b5d ;
     interop:accessMode acl:Read, acl:Write ;
diff --git a/proposals/specification/access-authorizations.bs b/proposals/specification/access-authorizations.bs
index 5a3a1fbb..193db281 100644
--- a/proposals/specification/access-authorizations.bs
+++ b/proposals/specification/access-authorizations.bs
@@ -145,6 +145,11 @@ needs to change, it should be replaced.
     </tr>
   </thead>
   <tbody>
+    <tr>
+      <td>grantedBy</td>
+      <td>[SocialAgent](#classSocialAgent)</td>
+      <td>[=Social Agent=] that granted the [=Data Authorization=]</td>
+    </tr>
     <tr>
       <td>dataOwner</td>
       <td>[SocialAgent](#classSocialAgent)</td>
@@ -346,6 +351,11 @@ needs to change, it should be replaced.
       <td>[SocialAgent](#classSocialAgent)</td>
       <td>[=Social Agent=] that owns the data being granted</td>
     </tr>
+    <tr>
+      <td>grantedBy</td>
+      <td>[SocialAgent](#classSocialAgent)</td>
+      <td>[=Social Agent=] that granted the [=Data Grant=]</td>
+    </tr>
     <tr>
       <td>grantee</td>
       <td>[Agent](#classAgent)</td>
diff --git a/proposals/specification/interop.shex b/proposals/specification/interop.shex
index 7be1ee3d..9acf5a60 100644
--- a/proposals/specification/interop.shex
+++ b/proposals/specification/interop.shex
@@ -153,6 +153,7 @@ PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
 <#DataAuthorizationAllShape> {
   a [ interop:DataAuthorization ] ;
   $<#CommonDataAuthorizationProperties> (
+    interop:grantedBy                       IRI  // shex:reference <#AgentShape> ;
     interop:grantee                         IRI  // shex:reference <#AgentShape> ;
     interop:registeredShapeTree             IRI  // shex:reference sts:ShapeTree ;
     interop:satisfiesAccessNeed             IRI? // shex:reference <#AccessNeedShape> ;
diff --git a/proposals/specification/snippets/alice.example/0945218b.ttl b/proposals/specification/snippets/alice.example/0945218b.ttl
index df2e815e..1c58a94d 100644
--- a/proposals/specification/snippets/alice.example/0945218b.ttl
+++ b/proposals/specification/snippets/alice.example/0945218b.ttl
@@ -12,6 +12,7 @@ PREFIX alice-work-data: <https://work.alice.example/data/>
 alice-projectron:0945218b
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee projectron:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
   interop:hasDataRegistration alice-work-data:df4ab227\/ ;
diff --git a/proposals/specification/snippets/alice.example/0e36ba8f.ttl b/proposals/specification/snippets/alice.example/0e36ba8f.ttl
index 9a884090..c4cc8cce 100644
--- a/proposals/specification/snippets/alice.example/0e36ba8f.ttl
+++ b/proposals/specification/snippets/alice.example/0e36ba8f.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:0e36ba8f
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner bob:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
diff --git a/proposals/specification/snippets/alice.example/0e4cb692.ttl b/proposals/specification/snippets/alice.example/0e4cb692.ttl
index 7e0e0596..87078400 100644
--- a/proposals/specification/snippets/alice.example/0e4cb692.ttl
+++ b/proposals/specification/snippets/alice.example/0e4cb692.ttl
@@ -11,6 +11,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:0e4cb692
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee projectron:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
diff --git a/proposals/specification/snippets/alice.example/244dfe3e.ttl b/proposals/specification/snippets/alice.example/244dfe3e.ttl
index bd7aa4d1..f1c29a08 100644
--- a/proposals/specification/snippets/alice.example/244dfe3e.ttl
+++ b/proposals/specification/snippets/alice.example/244dfe3e.ttl
@@ -12,6 +12,7 @@ PREFIX alice-work-data: <https://work.alice.example/data/>
 alice-performchart:244dfe3e
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
   interop:hasDataRegistration alice-work-data:df4ab227\/ ;
diff --git a/proposals/specification/snippets/alice.example/2d1568fb.ttl b/proposals/specification/snippets/alice.example/2d1568fb.ttl
index ce0e79e1..71e2b017 100644
--- a/proposals/specification/snippets/alice.example/2d1568fb.ttl
+++ b/proposals/specification/snippets/alice.example/2d1568fb.ttl
@@ -11,6 +11,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 
 alice-authorization:2d1568fb
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee sarah:\#id ;
   interop:satisfiesAccessNeed jarvis:\#fde6805e ;
diff --git a/proposals/specification/snippets/alice.example/3e94161f.ttl b/proposals/specification/snippets/alice.example/3e94161f.ttl
index 0026d69a..dcb30ada 100644
--- a/proposals/specification/snippets/alice.example/3e94161f.ttl
+++ b/proposals/specification/snippets/alice.example/3e94161f.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:3e94161f
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner jose:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
diff --git a/proposals/specification/snippets/alice.example/40d038ea.ttl b/proposals/specification/snippets/alice.example/40d038ea.ttl
index e1321709..2a259a7d 100644
--- a/proposals/specification/snippets/alice.example/40d038ea.ttl
+++ b/proposals/specification/snippets/alice.example/40d038ea.ttl
@@ -12,6 +12,7 @@ PREFIX alice-work-data: <https://work.alice.example/data/>
 alice-projectron:40d038ea
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee projectron:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration alice-work-data:8501f084\/ ;
diff --git a/proposals/specification/snippets/alice.example/54a1b6a0.ttl b/proposals/specification/snippets/alice.example/54a1b6a0.ttl
index e5ccdfc2..095477af 100644
--- a/proposals/specification/snippets/alice.example/54a1b6a0.ttl
+++ b/proposals/specification/snippets/alice.example/54a1b6a0.ttl
@@ -11,6 +11,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:54a1b6a0
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:grantee projectron:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:accessMode acl:Read, acl:Create ;
diff --git a/proposals/specification/snippets/alice.example/55363f56.ttl b/proposals/specification/snippets/alice.example/55363f56.ttl
index 79eb742c..f5ea3cad 100644
--- a/proposals/specification/snippets/alice.example/55363f56.ttl
+++ b/proposals/specification/snippets/alice.example/55363f56.ttl
@@ -10,6 +10,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 
 alice-authorization:55363f56
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee jarvis:\#id ;
   interop:satisfiesAccessNeed jarvis:\#3fb5f9a6 ;
diff --git a/proposals/specification/snippets/alice.example/5ca4692b.ttl b/proposals/specification/snippets/alice.example/5ca4692b.ttl
index f696af36..d56d4af2 100644
--- a/proposals/specification/snippets/alice.example/5ca4692b.ttl
+++ b/proposals/specification/snippets/alice.example/5ca4692b.ttl
@@ -11,6 +11,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 
 alice-authorization:5ca4692b
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee sarah:\#id ;
   interop:satisfiesAccessNeed jarvis:\#fde6805e ;
diff --git a/proposals/specification/snippets/alice.example/60e37fe3.ttl b/proposals/specification/snippets/alice.example/60e37fe3.ttl
index 451d03d8..39ccb848 100644
--- a/proposals/specification/snippets/alice.example/60e37fe3.ttl
+++ b/proposals/specification/snippets/alice.example/60e37fe3.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:60e37fe3
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner jose:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
diff --git a/proposals/specification/snippets/alice.example/6531c8e2.ttl b/proposals/specification/snippets/alice.example/6531c8e2.ttl
index 40d84d35..f9ab090f 100644
--- a/proposals/specification/snippets/alice.example/6531c8e2.ttl
+++ b/proposals/specification/snippets/alice.example/6531c8e2.ttl
@@ -12,6 +12,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:6531c8e2
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
diff --git a/proposals/specification/snippets/alice.example/6ef722af.ttl b/proposals/specification/snippets/alice.example/6ef722af.ttl
index e43cba6d..0e1ffb6f 100644
--- a/proposals/specification/snippets/alice.example/6ef722af.ttl
+++ b/proposals/specification/snippets/alice.example/6ef722af.ttl
@@ -10,6 +10,7 @@ PREFIX alice-agents-jarvis: <https://alice.example/agents/b5eea7bb/>
 alice-agents-jarvis:6ef722af
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee jarvis:\#id ;
   interop:satisfiesAccessNeed jarvis:\#fde6805e ;
   interop:accessMode acl:Read, acl:Update, acl:Control ;
diff --git a/proposals/specification/snippets/alice.example/8f178288.ttl b/proposals/specification/snippets/alice.example/8f178288.ttl
index 7aed43d2..514934ff 100644
--- a/proposals/specification/snippets/alice.example/8f178288.ttl
+++ b/proposals/specification/snippets/alice.example/8f178288.ttl
@@ -12,6 +12,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:8f178288
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
diff --git a/proposals/specification/snippets/alice.example/8fac3576.ttl b/proposals/specification/snippets/alice.example/8fac3576.ttl
index 9127ac6a..57cda855 100644
--- a/proposals/specification/snippets/alice.example/8fac3576.ttl
+++ b/proposals/specification/snippets/alice.example/8fac3576.ttl
@@ -10,7 +10,8 @@ PREFIX alice-sarah: <https://alice.example/agents/b49afcdf/>
 
 alice-sarah:8fac3576
   a interop:DataGrant ;
-  interop:dataOwner alice: ;
+  interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee sarah:\#id ;
   interop:satisfiesAccessNeed jarvis:\#3fb5f9a6 ;
   interop:accessMode acl:Read, acl:Update, acl:Control ;
diff --git a/proposals/specification/snippets/alice.example/935458cf.ttl b/proposals/specification/snippets/alice.example/935458cf.ttl
index fd539705..2d6a143b 100644
--- a/proposals/specification/snippets/alice.example/935458cf.ttl
+++ b/proposals/specification/snippets/alice.example/935458cf.ttl
@@ -10,6 +10,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 
 alice-authorization:935458cf
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee jarvis:\#id ;
   interop:satisfiesAccessNeed jarvis:\#fde6805e ;
diff --git a/proposals/specification/snippets/alice.example/95ff7580.ttl b/proposals/specification/snippets/alice.example/95ff7580.ttl
index 5f470d64..dd7b4fbe 100644
--- a/proposals/specification/snippets/alice.example/95ff7580.ttl
+++ b/proposals/specification/snippets/alice.example/95ff7580.ttl
@@ -12,7 +12,8 @@ PREFIX projectron: <https://projectron.example/>
 
 alice-bob:95ff7580
   a interop:DataGrant ;
-  interop:dataOwner alice: ;
+  interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee bob:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
   interop:hasDataRegistration alice-work-data:df4ab227\/ ;
diff --git a/proposals/specification/snippets/alice.example/a0623c8f.ttl b/proposals/specification/snippets/alice.example/a0623c8f.ttl
index df2a613f..b22931b8 100644
--- a/proposals/specification/snippets/alice.example/a0623c8f.ttl
+++ b/proposals/specification/snippets/alice.example/a0623c8f.ttl
@@ -12,6 +12,7 @@ PREFIX alice-personal-data: <https://personal.alice.example/data/>
 alice-projectron:a0623c8f
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee projectron:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration alice-personal-data:fe7a8e7b\/ ;
diff --git a/proposals/specification/snippets/alice.example/a8a224e6.ttl b/proposals/specification/snippets/alice.example/a8a224e6.ttl
index 228e6d51..24d24977 100644
--- a/proposals/specification/snippets/alice.example/a8a224e6.ttl
+++ b/proposals/specification/snippets/alice.example/a8a224e6.ttl
@@ -12,6 +12,7 @@ PREFIX alice-work-data: <https://work.alice.example/data/>
 alice-performchart:a8a224e6
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration alice-work-data:8501f084\/ ;
diff --git a/proposals/specification/snippets/alice.example/b0dc6c78.ttl b/proposals/specification/snippets/alice.example/b0dc6c78.ttl
index b83c7777..0165e037 100644
--- a/proposals/specification/snippets/alice.example/b0dc6c78.ttl
+++ b/proposals/specification/snippets/alice.example/b0dc6c78.ttl
@@ -10,6 +10,7 @@ PREFIX alice-agents-jarvis: <https://alice.example/agents/b5eea7bb/>
 alice-agents-jarvis:b0dc6c78
   a interop:DataGrant ;
   interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee jarvis:\#id ;
   interop:satisfiesAccessNeed jarvis:\#3fb5f9a6 ;
   interop:accessMode acl:Read, acl:Update, acl:Control ;
diff --git a/proposals/specification/snippets/alice.example/b42228af.ttl b/proposals/specification/snippets/alice.example/b42228af.ttl
index 8c247486..9c6b139e 100644
--- a/proposals/specification/snippets/alice.example/b42228af.ttl
+++ b/proposals/specification/snippets/alice.example/b42228af.ttl
@@ -12,7 +12,8 @@ PREFIX alice-work-data: <https://work.alice.example/data/>
 
 alice-bob:b42228af
   a interop:DataGrant ;
-  interop:dataOwner alice: ;
+  interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee bob:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration alice-work-data:8501f084\/ ;
diff --git a/proposals/specification/snippets/alice.example/ca14a518.ttl b/proposals/specification/snippets/alice.example/ca14a518.ttl
index 101f0c05..c764753c 100644
--- a/proposals/specification/snippets/alice.example/ca14a518.ttl
+++ b/proposals/specification/snippets/alice.example/ca14a518.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 alice-authorization:ca14a518
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner bob:\#id ;
   interop:grantee performchart:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
diff --git a/proposals/specification/snippets/alice.example/d85fd1f5.ttl b/proposals/specification/snippets/alice.example/d85fd1f5.ttl
index 0fb88c16..7e47d648 100644
--- a/proposals/specification/snippets/alice.example/d85fd1f5.ttl
+++ b/proposals/specification/snippets/alice.example/d85fd1f5.ttl
@@ -10,7 +10,8 @@ PREFIX alice-sarah: <https://alice.example/agents/b49afcdf/>
 
 alice-sarah:d85fd1f5
   a interop:DataGrant ;
-  interop:dataOwner alice: ;
+  interop:dataOwner alice:\#id ;
+  interop:grantedBy alice:\#id ;
   interop:grantee sarah:\#id ;
   interop:satisfiesAccessNeed jarvis:\#3fb5f9a6 ;
   interop:accessMode acl:Read, acl:Update, acl:Control ;
diff --git a/proposals/specification/snippets/alice.example/ec6057d9.ttl b/proposals/specification/snippets/alice.example/ec6057d9.ttl
index 1bc48257..59fa0ce1 100644
--- a/proposals/specification/snippets/alice.example/ec6057d9.ttl
+++ b/proposals/specification/snippets/alice.example/ec6057d9.ttl
@@ -13,6 +13,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 alice-authorization:ec6057d9
   a interop:DataAuthorization ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
+  interop:grantedBy alice:\#id ;
   interop:dataOwner alice:\#id ;
   interop:grantee bob:\#id ;
   interop:satisfiesAccessNeed projectron:\#9462959c ;
diff --git a/proposals/specification/snippets/alice.example/f800b10c.ttl b/proposals/specification/snippets/alice.example/f800b10c.ttl
index 37793742..66192d47 100644
--- a/proposals/specification/snippets/alice.example/f800b10c.ttl
+++ b/proposals/specification/snippets/alice.example/f800b10c.ttl
@@ -12,6 +12,7 @@ PREFIX alice-agents: <https://alice.example/agents/>
 
 alice-authorization:f800b10c
   a interop:DataAuthorization ;
+  interop:grantedBy alice:\#id ;
   interop:grantee bob:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:satisfiesAccessNeed projectron:\#ac54ff1e ;
diff --git a/proposals/specification/snippets/bob.example/b2b6a645.ttl b/proposals/specification/snippets/bob.example/b2b6a645.ttl
index 877e235f..468ca087 100644
--- a/proposals/specification/snippets/bob.example/b2b6a645.ttl
+++ b/proposals/specification/snippets/bob.example/b2b6a645.ttl
@@ -12,7 +12,8 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 bob-alice:b2b6a645
   a interop:DataGrant ;
-  interop:dataOwner bob: ;
+  interop:dataOwner bob:\#id ;
+  interop:grantedBy bob:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration bob-work-data:08a99a10\/ ;
diff --git a/proposals/specification/snippets/bob.example/d5b5760c.ttl b/proposals/specification/snippets/bob.example/d5b5760c.ttl
index 7acf5ff5..0386a32c 100644
--- a/proposals/specification/snippets/bob.example/d5b5760c.ttl
+++ b/proposals/specification/snippets/bob.example/d5b5760c.ttl
@@ -12,7 +12,8 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 bob-alice:d5b5760c
   a interop:DataGrant ;
-  interop:dataOwner bob: ;
+  interop:dataOwner bob:\#id ;
+  interop:grantedBy bob:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
   interop:hasDataRegistration bob-work-data:45e092cf\/ ;
diff --git a/proposals/specification/snippets/bob.example/e4b1b154.ttl b/proposals/specification/snippets/bob.example/e4b1b154.ttl
index 5d9b81d5..21bee678 100644
--- a/proposals/specification/snippets/bob.example/e4b1b154.ttl
+++ b/proposals/specification/snippets/bob.example/e4b1b154.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 bob-authorization:e4b1b154
   a interop:DataAuthorization ;
+  interop:grantedBy bob:\#id ;
   interop:dataOwner bob:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
diff --git a/proposals/specification/snippets/jose.example/10d14db3.ttl b/proposals/specification/snippets/jose.example/10d14db3.ttl
index 78c31d3c..17f71274 100644
--- a/proposals/specification/snippets/jose.example/10d14db3.ttl
+++ b/proposals/specification/snippets/jose.example/10d14db3.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 jose-alice:10d14db3
   a interop:DataGrant ;
   interop:dataOwner jose:\#id ;
+  interop:grantedBy jose:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:TaskTree ;
   interop:hasDataRegistration jose-work-data:9a1bdd8f\/ ;
diff --git a/proposals/specification/snippets/jose.example/2aa21a8c.ttl b/proposals/specification/snippets/jose.example/2aa21a8c.ttl
index 55cc5b79..64440508 100644
--- a/proposals/specification/snippets/jose.example/2aa21a8c.ttl
+++ b/proposals/specification/snippets/jose.example/2aa21a8c.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 jose-alice:2aa21a8c
   a interop:DataGrant ;
   interop:dataOwner jose:\#id ;
+  interop:grantedBy jose:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;
   interop:hasDataRegistration jose-work-data:c3feca8c\/ ;
diff --git a/proposals/specification/snippets/jose.example/69095550.ttl b/proposals/specification/snippets/jose.example/69095550.ttl
index a787f02e..4c9b5bde 100644
--- a/proposals/specification/snippets/jose.example/69095550.ttl
+++ b/proposals/specification/snippets/jose.example/69095550.ttl
@@ -13,6 +13,7 @@ PREFIX pm-shapetrees: <http://data.example/shapetrees/pm#>
 
 jose-authorization:69095550
   a interop:DataAuthorization ;
+  interop:grantedBy jose:\#id ;
   interop:dataOwner jose:\#id ;
   interop:grantee alice:\#id ;
   interop:registeredShapeTree pm-shapetrees:ProjectTree ;