diff --git a/.typos.toml b/.typos.toml
index 79fb1312af..bc0109460f 100644
--- a/.typos.toml
+++ b/.typos.toml
@@ -16,7 +16,7 @@ extend-ignore-re = [
     "prefix.*",
     "value: .*",
     "pqNTRUsign",
-    "Strnad",
+    "nsec1.*",
 ]
 
 [default.extend-words]
@@ -29,6 +29,7 @@ Atack = "Atack"
 Falke = "Falke"
 Meni = "Meni"
 Ono = "Ono"
+Strnad = "Strnad"
 Toom = "Toom"
 
 [files]
diff --git a/bip-0085.mediawiki b/bip-0085.mediawiki
index b0f00abbef..2b08eb17f3 100644
--- a/bip-0085.mediawiki
+++ b/bip-0085.mediawiki
@@ -8,7 +8,7 @@
   Type: Informational
   Assigned: 2020-03-20
   License: BSD-2-Clause OR OPUBL-1.0
-  Version: 2.0.0
+  Version: 2.1.0
 </pre>
 
 ==Abstract==
@@ -423,6 +423,52 @@ OUTPUT
 * DERIVED ENTROPY=5e41f8f5d5d9ac09a20b8a5797a3172b28c806aead00d27e36609e2dd116a59176a738804236586f668da8a51b90c708a4226d7f92259c69f64c51124b6f6cd2
 * DERIVED ROLLS=1,0,0,2,0,1,5,5,2,4
 
+===Nostr===
+
+Application number: 9000'
+
+9000 is the zip code of Funchal in Madeira, Portugal, where this specification was written during the Sovereign Engineering event.
+
+The derivation path format is: <code>m/83696968'/9000'/{identity}'/{account_index}'</code>
+
+Uses the entropy as a Nostr private key.
+
+Identity index <code>0'</code> is reserved for future protocol use.
+Account index <code>0'</code> is reserved across all identities for key management operations.
+Usable keys start at <code>identity >= 1'</code> and <code>account_index >= 1'</code>.
+
+The resulting 32-byte private key is Bech32 encoded as an <code>nsec</code> per NIP19.
+
+'''identity=1, account=1'''
+
+INPUT:
+* MASTER BIP32 ROOT KEY: xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb
+* PATH: m/83696968'/9000'/1'/1'
+
+OUTPUT
+* DERIVED ENTROPY=552ad1d578fe1bc927cec9612651652b07c52dde4017911bc23bc953568075ff
+* DERIVED NSEC=nsec1254dr4tclcdujf7we9sjv5t99vru2tw7gqtezx7z80y4x45qwhlsmxapst
+
+'''identity=1, account=2'''
+
+INPUT:
+* MASTER BIP32 ROOT KEY: xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb
+* PATH: m/83696968'/9000'/1'/2'
+
+OUTPUT
+* DERIVED ENTROPY=4fd36c0061a65db375b4350f44bb62a6d7f716ee93bd0f59887ac50b35fa8b96
+* DERIVED NSEC=nsec1flfkcqrp5ewmxad5x585fwmz5mtlw9hwjw7s7kvg0tzskd063wtq34wlgr
+
+'''identity=2, account=1'''
+
+INPUT:
+* MASTER BIP32 ROOT KEY: xprv9s21ZrQH143K2LBWUUQRFXhucrQqBpKdRRxNVq2zBqsx8HVqFk2uYo8kmbaLLHRdqtQpUm98uKfu3vca1LqdGhUtyoFnCNkfmXRyPXLjbKb
+* PATH: m/83696968'/9000'/2'/1'
+
+OUTPUT
+* DERIVED ENTROPY=b2d3b48992d46f98beac0196c4e258417087e467dbec1503342785368f4402c2
+* DERIVED NSEC=nsec1ktfmfzvj63he304vqxtvfcjcg9cg0er8m0kp2qe5y7zndr6yqtpq7q5y44
+
 ==Backwards Compatibility==
 
 This specification is not backwards compatible with any other existing specification.
@@ -431,16 +477,20 @@ This specification relies on BIP32 but is agnostic to how the BIP32 root key is
 
 ==References==
 
-BIP32, BIP39
+BIP32, BIP39, [https://github.com/nostr-protocol/nips/blob/master/01.md NIP01], [https://github.com/nostr-protocol/nips/blob/master/06.md NIP06], [https://github.com/nostr-protocol/nips/blob/master/19.md NIP19]
 
 ==Reference Implementations==
 
 * 1.3.0 Python 3.x library implementation: [https://github.com/akarve/bipsea]
-* 1.1.0 Python 2.x library implementation: [https://github.com/ethankosakovsky/bip85]
-* 1.0.0 JavaScript library implementation: [https://github.com/hoganri/bip85-js]
 
 ==Changelog==
 
+===2.1.0 (2026-05-15)===
+
+====Added====
+
+* Nostr application 9000'
+
 ===2.0.0 (2025-09-19)===
 
 ====Fixed====