src/controllers/MetadataController.ts

@@ -6,9 +6,10 @@ import {
   validateEvent,
   verifyEvent,
   Event,
-  EventTemplate
+  EventTemplate,
+  nip19
 } from 'nostr-tools'
-import { ProfileMetadata, RelaySet } from '../types'
+import { NostrJoiningBlock, ProfileMetadata, RelaySet } from '../types'
 import { NostrController } from '.'
 import { toast } from 'react-toastify'
 import { queryNip05 } from '../utils'
@@ -166,14 +167,16 @@ export class MetadataController {
       })
   }
 
-  public getNostrJoiningBlockNumber = async (hexKey: string) => {
+  public getNostrJoiningBlockNumber = async (
+    hexKey: string
+  ): Promise<NostrJoiningBlock | null> => {
     const relaySet = await this.findRelayListMetadata(hexKey)
 
-    const relays: string[] = []
+    const userRelays: string[] = []
 
     // find user's relays
     if (relaySet.write.length > 0) {
-      relays.push(...relaySet.write)
+      userRelays.push(...relaySet.write)
     } else {
       const metadata = await this.findMetadata(hexKey)
       const metadataContent = this.extractProfileMetadataContent(metadata)
@@ -182,12 +185,12 @@ export class MetadataController {
         const nip05Profile = await queryNip05(metadataContent.nip05)
 
         if (nip05Profile && nip05Profile.pubkey === hexKey) {
-          relays.push(...nip05Profile.relays)
+          userRelays.push(...nip05Profile.relays)
         }
       }
     }
 
-    if (relays.length === 0) return null
+    if (userRelays.length === 0) return null
 
     // filter for finding user's first kind 1 event
     const eventFilter: Filter = {
@@ -198,7 +201,7 @@ export class MetadataController {
     const pool = new SimplePool()
 
     // find user's kind 1 events published on user's relays
-    const events = await pool.querySync(relays, eventFilter)
+    const events = await pool.querySync(userRelays, eventFilter)
     if (events && events.length) {
       // sort events by created_at time in ascending order
       events.sort((a, b) => a.created_at - b.created_at)
@@ -270,10 +273,20 @@ export class MetadataController {
         '#p': [jobSignedEvent.pubkey]
       })
 
-      // asynchronously get block number from dvm job with 10 seconds timeout
+      // asynchronously get block number from dvm job with 20 seconds timeout
-      const dvmJobResult = await subscribeWithTimeout(sub, 10000)
+      const dvmJobResult = await subscribeWithTimeout(sub, 20000)
 
-      return parseInt(dvmJobResult)
+      const encodedEventPointer = nip19.neventEncode({
+        id: event.id,
+        relays: userRelays,
+        author: event.pubkey,
+        kind: event.kind
+      })
+
+      return {
+        block: parseInt(dvmJobResult),
+        encodedEventPointer
+      }
     }
 
     return null

src/pages/profile/index.tsx

@@ -9,11 +9,11 @@ import {
 } from '@mui/material'
 import { UnsignedEvent, nip19, kinds, VerifiedEvent } from 'nostr-tools'
 import { useEffect, useMemo, useState } from 'react'
-import { useParams } from 'react-router-dom'
+import { Link, useParams } from 'react-router-dom'
 import { toast } from 'react-toastify'
 import placeholderAvatar from '../../assets/images/nostr-logo.jpg'
 import { MetadataController, NostrController } from '../../controllers'
-import { ProfileMetadata } from '../../types'
+import { NostrJoiningBlock, ProfileMetadata } from '../../types'
 import styles from './style.module.scss'
 import { useDispatch, useSelector } from 'react-redux'
 import { State } from '../../store/rootReducer'
@@ -34,7 +34,8 @@ export const ProfilePage = () => {
   const nostrController = NostrController.getInstance()
 
   const [pubkey, setPubkey] = useState<string>()
-  const [blockNumber, setBlockNumber] = useState<number | null>(null)
+  const [nostrJoiningBlock, setNostrJoiningBlock] =
+    useState<NostrJoiningBlock | null>(null)
   const [profileMetadata, setProfileMetadata] = useState<ProfileMetadata>()
   const [savingProfileMetadata, setSavingProfileMetadata] = useState(false)
   const metadataState = useSelector((state: State) => state.metadata)
@@ -64,7 +65,7 @@ export const ProfilePage = () => {
       metadataController
         .getNostrJoiningBlockNumber(pubkey)
         .then((res) => {
-          setBlockNumber(res)
+          setNostrJoiningBlock(res)
         })
         .catch((err) => {
           // todo: handle error
@@ -239,15 +240,18 @@ export const ProfilePage = () => {
                   src={profileMetadata.picture || placeholderAvatar}
                   alt='Profile Image'
                 />
-                {blockNumber && (
+                {nostrJoiningBlock && (
                   <Typography
                     sx={{
                       color: theme.palette.getContrastText(
                         theme.palette.background.paper
                       )
                     }}
+                    component={Link}
+                    to={`https://njump.me/${nostrJoiningBlock.encodedEventPointer}`}
+                    target='_blank'
                   >
-                    On nostr since {blockNumber.toLocaleString()}
+                    On nostr since {nostrJoiningBlock.block.toLocaleString()}
                   </Typography>
                 )}
               </ListItem>

src/types/nostr.ts

@@ -12,3 +12,8 @@ export interface RelaySet {
   read: string[]
   write: string[]
 }
+
+export interface NostrJoiningBlock {
+  block: number
+  encodedEventPointer: string
+}