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Relays

UnderSound Relay

Online
wss://undersound.link

Musica Libera e Indipendente su Nostr

Read-only
ScoreScore: 50

Connection

Connect
134 ms
Read
21 ms
Write
—n/a
Network
Clearnet
Last checked
45 minutes ago
Last online
45 minutes ago

Uptime

Last 24 hours
50%
Last 7 days
50%
Each bar is one check (every 6 hours), newest on the right.

Popularity

Listed by users
0
as read relay
0
as write relay
0
NIP-66 monitors
3
Notes in the last hour
0

Supported NIPs

Access & policy

Authentication (NIP-42)
No
Payment required
No
Restricted writes
Yes
Sends AUTH challenge
No
Minimum PoW (NIP-13)
None
Write test
Rejected: blocked: write access restricted to artists only

Limits

Max message length
131K
Max subscriptions
200
Max filter limit
500
Max content length
—n/a
Max event tags
—n/a

Overview

Software
strfry
Version
1.1.0-4-ge53d8de
Contact
Telegram Bot
Countries
—n/a
Languages
—n/a
First seen
Oct 30, 2026, 12:17 AM UTC
Discovered via
nip66

NIP-11 document

{
  "name": "UnderSound Relay",
  "description": "Musica Libera e Indipendente su Nostr",
  "banner": "https://undersound.link/assets/icon.jpg",
  "icon": "https://undersound.link/assets/icon.jpg",
  "pubkey": "25954d75b2a7588e9cf22827cd57686afed157c93ead34078b149c78ade4eeb8",
  "contact": "Telegram Bot",
  "supported_nips": [
    1,
    2,
    4,
    9,
    11,
    28,
    40,
    42,
    45,
    70,
    77
  ],
  "software": "git+https://github.com/hoytech/strfry.git",
  "version": "1.1.0-4-ge53d8de",
  "limitation": {
    "max_message_length": 131072,
    "max_subscriptions": 200,
    "max_limit": 500
  }
}

Use this data

View JSON
curl
curl "/api/v1/relays/undersound.link"