diff --git a/src/controllers/MetadataController.ts b/src/controllers/MetadataController.ts
index 511b1a2..8c10ce6 100644
--- a/src/controllers/MetadataController.ts
+++ b/src/controllers/MetadataController.ts
@@ -171,6 +171,7 @@ export class MetadataController {
 
     const relays: string[] = []
 
+    // find user's relays
     if (relaySet.write.length > 0) {
       relays.push(...relaySet.write)
     } else {
@@ -188,19 +189,25 @@ export class MetadataController {
 
     if (relays.length === 0) return null
 
+    // filter for finding user's first kind 1 event
     const eventFilter: Filter = {
       kinds: [kinds.ShortTextNote],
       authors: [hexKey]
     }
 
     const pool = new SimplePool()
+
+    // find user's kind 1 events published on user's relays
     const events = await pool.querySync(relays, eventFilter)
     if (events && events.length) {
+      // sort events by created_at time in ascending order
       events.sort((a, b) => a.created_at - b.created_at)
 
+      // get first ever event published on user's relays
       const event = events[0]
       const { created_at } = event
 
+      // initialize job request
       const jobEventTemplate: EventTemplate = {
         content: '',
         created_at: Math.round(Date.now() / 1000),
@@ -211,6 +218,7 @@ export class MetadataController {
         ]
       }
 
+      // sign job request event
       const jobSignedEvent = await this.nostrController.signEvent(
         jobEventTemplate
       )
@@ -221,6 +229,7 @@ export class MetadataController {
         'wss://relayable.org'
       ]
 
+      // publish job request
       await this.nostrController.publishEvent(jobSignedEvent, relays)
 
       console.log('jobSignedEvent :>> ', jobSignedEvent)
@@ -254,12 +263,14 @@ export class MetadataController {
 
       await dvmNDK.connect(2000)
 
+      // filter for getting DVM job's result
       const sub = dvmNDK.subscribe({
         kinds: [68002 as number],
         '#e': [jobSignedEvent.id],
         '#p': [jobSignedEvent.pubkey]
       })
 
+      // asynchronously get block number from dvm job with 10 seconds timeout
       const dvmJobResult = await subscribeWithTimeout(sub, 10000)
 
       return parseInt(dvmJobResult)