Release cardano-node-11.0

cabal.project

@@ -14,7 +14,7 @@ repository cardano-haskell-packages
 -- you need to run if you change them
 index-state:
   , hackage.haskell.org 2026-03-26T20:21:33Z
-  , cardano-haskell-packages 2026-04-14T21:25:56Z
+  , cardano-haskell-packages 2026-04-22T19:21:15Z
 
 active-repositories:
   , :rest

cardano-node-chairman/cardano-node-chairman.cabal

@@ -45,7 +45,7 @@ executable cardano-node-chairman
                       , cardano-crypto-class
                       , cardano-git-rev ^>= 0.2.2
                       , cardano-ledger-core
-                      , cardano-node ^>= 10.7
+                      , cardano-node ^>= 11.0
                       , cardano-prelude
                       , containers
                       , contra-tracer

cardano-node/cardano-node.cabal

@@ -1,7 +1,7 @@
 cabal-version: 3.8
 
 name:                   cardano-node
-version:                10.7.1
+version:                11.0
 synopsis:               The cardano full node
 description:            The cardano full node.
 category:               Cardano,
@@ -149,7 +149,7 @@ library
                       , cardano-ledger-babbage
                       , cardano-ledger-binary >= 1.7.1
                       , cardano-ledger-byron
-                      , cardano-ledger-conway
+                      , cardano-ledger-conway >= 1.22.1.0
                       , cardano-ledger-core
                       , cardano-ledger-dijkstra
                       , cardano-ledger-shelley

cardano-node/src/Cardano/Node/Protocol/Cardano.hs

@@ -181,8 +181,8 @@ mkSomeConsensusProtocolCardano NodeByronProtocolConfiguration {
           shelleyBasedLeaderCredentials = shelleyLeaderCredentials
         }
       , Consensus.cardanoProtocolVersion = if npcExperimentalHardForksEnabled
-                                           then ProtVer (natVersion @11) 0
-                                           else ProtVer (natVersion @10) 8
+                                           then ProtVer (natVersion @12) 0
+                                           else ProtVer (natVersion @11) 0
         -- The remaining arguments specify the parameters needed to transition between two eras
       , Consensus.cardanoLedgerTransitionConfig =
           Ledger.mkLatestTransitionConfig

cardano-testnet/changelog.d/20260421_175934_jordan.millar_disable_experimental_hardforks_enabled.md

@@ -0,0 +1,7 @@
+### Fixed
+
+- Disable `ExperimentalHardForksEnabled` in the default testnet config.
+  After the experimental-gated `cardanoProtocolVersion` was bumped to 12,
+  Conway-era testnets forged blocks with protocol version 12, which the Conway
+  BBody rule rejects (max protocol version = 11). Dropping the flag makes the
+  node use protocol version 11, which Conway accepts.

cardano-testnet/src/Testnet/Defaults.hs

@@ -219,9 +219,8 @@ defaultYamlHardforkViaConfig sbe =
   hardforkViaConfig :: ShelleyBasedEra era -> Aeson.KeyMap Aeson.Value
   hardforkViaConfig sbe' =
     Aeson.fromList $
-      [ ("ExperimentalHardForksEnabled", Aeson.Bool True)
-      , ("ExperimentalProtocolsEnabled", Aeson.Bool True) ]
-      ++ (case sbe' of
+      ("ExperimentalProtocolsEnabled", Aeson.Bool True)
+      : (case sbe' of
             ShelleyBasedEraShelley ->
                 [ ("TestShelleyHardForkAtEpoch", Aeson.Number 0) ]
             ShelleyBasedEraAllegra ->

cardano-testnet/test/cardano-testnet-golden/files/golden/node_default_config.json

@@ -5,7 +5,6 @@
     "DijkstraGenesisFile": "dijkstra-genesis.json",
     "EnableLogMetrics": false,
     "EnableLogging": true,
-    "ExperimentalHardForksEnabled": true,
     "ExperimentalProtocolsEnabled": true,
     "LastKnownBlockVersion-Alt": 0,
     "LastKnownBlockVersion-Major": 9,

configuration/cardano/mainnet-config.json

@@ -18,7 +18,7 @@
     "SnapshotInterval": 4320
   },
   "MaxKnownMajorProtocolVersion": 2,
-  "MinNodeVersion": "10.7.0",
+  "MinNodeVersion": "11.0",
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresNoMagic",
   "ShelleyGenesisFile": "mainnet-shelley-genesis.json",

configuration/cardano/mainnet-config.yaml

@@ -96,9 +96,9 @@ LedgerDB:
 
 ##### Version Information #####
 
-# Min is currently 10.7.0 due to change of config bundled peer-snapshot
+# Min is currently 11.0 due to change of config bundled peer-snapshot
 # version.
-MinNodeVersion: 10.7.0
+MinNodeVersion: "11.0"
 
 ##### Logging configuration #####