diff --git a/packages/cactus-core-api/src/main/typescript/plugin/consortium/i-plugin-consortium.ts b/packages/cactus-core-api/src/main/typescript/plugin/consortium/i-plugin-consortium.ts
new file mode 100644
index 0000000000..f14439b210
--- /dev/null
+++ b/packages/cactus-core-api/src/main/typescript/plugin/consortium/i-plugin-consortium.ts
@@ -0,0 +1,27 @@
+import { ICactusPlugin } from "../i-cactus-plugin";
+
+/**
+ * Common interface to be implemented by plugins which are implementing the connection to ledgers.
+ */
+export interface IPluginConsortium<
+  GetNodeJwsIn,
+  GetNodeJwsOut,
+  GetConsortiumJwsIn,
+  GetConsortiumJwsOut
+> extends ICactusPlugin {
+  /**
+   * Returns the JSON Web Signature of the consortium metadata, as issued by the
+   * **current node** that the request has been issued to.
+   * @param req The parameters of the request, if any.
+   */
+  getNodeJws(req?: GetNodeJwsIn): Promise<GetNodeJwsOut>;
+
+  /**
+   * Returns the JSON Web Signature of the consortium metadata, as issued by
+   * **all the nodes in the consortium** that are known to be in the consortium
+   * by this current node that the request has been issued to.
+   *
+   * @param req The parameters of the request, if any.
+   */
+  getConsortiumJws(req?: GetConsortiumJwsIn): Promise<GetConsortiumJwsOut>;
+}
diff --git a/packages/cactus-core-api/src/main/typescript/public-api.ts b/packages/cactus-core-api/src/main/typescript/public-api.ts
index b0e2215385..422da181f9 100755
--- a/packages/cactus-core-api/src/main/typescript/public-api.ts
+++ b/packages/cactus-core-api/src/main/typescript/public-api.ts
@@ -2,6 +2,7 @@ export * from "./generated/openapi/typescript-axios/index";
 export * from "./generated/openapi/typescript-axios/base";
 
 export { IPluginLedgerConnector } from "./plugin/ledger-connector/i-plugin-ledger-connector";
+export { IPluginConsortium } from "./plugin/consortium/i-plugin-consortium";
 export { IPluginKeychain } from "./plugin/keychain/i-plugin-keychain";
 export { IExpressRequestHandler } from "./plugin/web-service/i-express-request-handler";