BIP-434: Add reference implementation, bump to 1.0.0, mark complete

README.mediawiki

@@ -1436,13 +1436,13 @@ users (see also: [https://en.bitcoin.it/wiki/Economic_majority economic majority
 | Gregory Sanders
 | Informational
 | Draft
-|-
+|- style="background-color: #ffffcf"
 | [[bip-0434.md|434]]
 | Peer Services
 | Peer Feature Negotiation
 | Anthony Towns
 | Specification
-| Draft
+| Complete
 |-
 | [[bip-0440.mediawiki|440]]
 | Consensus (soft fork)

bip-0434.md

@@ -3,13 +3,13 @@
   Layer: Peer Services
   Title: Peer Feature Negotiation
   Authors: Anthony Towns <aj@erisian.com.au>
-  Status: Draft
+  Status: Complete
   Type: Specification
   Assigned: 2026-01-14
   License: BSD-2-Clause
   Discussion: 2025-12-19: https://gnusha.org/pi/bitcoindev/aUUXLgEUCgGb122o@erisian.com.au/T/#u
               2020-08-21: https://gnusha.org/pi/bitcoindev/20200821023647.7eat4goqqrtaqnna@erisian.com.au/
-  Version: 0.1.0
+  Version: 1.0.0
 ```
 
 ## Abstract
@@ -286,6 +286,11 @@ that prefer to fully validate each message received:
  * Sending unknown messages after `verack` is explicitly forbidden,
    in so far as that is possible.
 
+## Reference implementation
+
+This feature was implemented in Bitcoin Core [PR#35221][PR#35221],
+which may be used as a reference implementation.
+
 ## Backward compatibility
 
 Clients specifying a version number prior to `70017` remain fully
@@ -327,6 +332,7 @@ advertised even to peers that do not support the features in question.
 [PR#20564]: https://github.com/bitcoin/bitcoin/pull/20564
 [PR#9720]: https://github.com/bitcoin/bitcoin/pull/9720
 [PR#19723]: https://github.com/bitcoin/bitcoin/pull/19723
+[PR#35221]: https://github.com/bitcoin/bitcoin/pull/35221
 [btcd#1812]: https://github.com/btcsuite/btcd/pull/1812
 [btcd#1661]: https://github.com/btcsuite/btcd/issues/1661
 [permless-extensible]: https://github.com/bitcoin/bitcoin/pull/20564#issuecomment-738456560