Add 'value' known value (codepoint 25) to Blockchain Commons registry

Author: wolfmcnally

known-value-assignments/json/0_blockchain_commons_registry.json

@@ -184,6 +184,12 @@
       "uri": "http://xmlns.com/foaf/spec/#term_nick",
       "description": "The subject is a nickname for the object."
     },
+    {
+      "codepoint": 25,
+      "name": "value",
+      "uri": "",
+      "description": "The object is the primary value in a set of assertions. Frequently used with `salt`."
+    },
     {
       "codepoint": 50,
       "name": "attachment",

known-value-assignments/markdown/0_blockchain_commons_registry.md

@@ -47,6 +47,7 @@
 | 22 | `validUntil` | property | https://schema.org/validUntil | The subject is valid until the date in the object. |
 | 23 | `position` | property | https://schema.org/position | The position of an item in a series or sequence of items. |
 | 24 | `nickname` | property | http://xmlns.com/foaf/spec/#term_nick | The subject is a nickname for the object. |
+| 25 | `value` | property | | The object is the primary value in a set of assertions. Frequently used with `salt`. |
 
 ### Attachments (50-52)