approvals; vault creation by backend

db.js

@@ -22,6 +22,11 @@ export async function withDb(cb) {
 }
 
 
+export function dbAddr(addr) {
+    // format an 0x-style address into postgres bytes
+    return '\\' + addr.slice(1)
+}
+
 export async function sql(query) {
     return await withDb(async (db)=>await db.query(query) )
 }