Added Deneb config for Sepolia testnet (Consensys#7885)

fixes Consensys#7882

Signed-off-by: Paul Harris <[email protected]>

CHANGELOG.md

@@ -16,6 +16,7 @@ the [releases page](https://github.com/Consensys/teku/releases).
 - Added a hidden flag `--Xfork-choice-updated-always-send-payload-attributes` which would cause
 payload attributes to be calculated and sent with every fcU. This could be useful for builders
 consuming the `payload_attributes` SSE events.
+- Added Deneb (aka Dencun) configuration for Sepolia network for epoch 132608 (2024-01-30 22:51:12 UTC).
 - Added Deneb (aka Dencun) configuration for Holesky network for epoch 29696 (2024-02-07 11:34:24 UTC).
 
 ### Bug Fixes

ethereum/networks/src/main/java/tech/pegasys/teku/networks/Eth2NetworkConfiguration.java

@@ -730,6 +730,7 @@ private Builder applySepoliaNetworkDefaults() {
       return applyTestnetDefaults()
           .constants(SEPOLIA.configName())
           .startupTimeoutSeconds(120)
+          .trustedSetupFromClasspath(MAINNET_TRUSTED_SETUP_FILENAME)
           .eth1DepositContractDeployBlock(1273020)
           .defaultInitialState(
               "https://github.com/eth-clients/merge-testnets/raw/9c873ab67b902aa676370a549129e5e91013afa3/sepolia/genesis.ssz")

ethereum/spec/src/main/resources/tech/pegasys/teku/spec/config/configs/sepolia.yaml

@@ -32,9 +32,9 @@ TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
 CAPELLA_FORK_VERSION: 0x90000072
 CAPELLA_FORK_EPOCH: 56832
 
-# Sharding
-SHARDING_FORK_VERSION: 0x04001020
-SHARDING_FORK_EPOCH: 18446744073709551615
+# Deneb
+DENEB_FORK_VERSION: 0x90000073
+DENEB_FORK_EPOCH: 132608
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -62,18 +62,13 @@ EJECTION_BALANCE: 16000000000
 MIN_PER_EPOCH_CHURN_LIMIT: 4
 # 2**16 (= 65,536)
 CHURN_LIMIT_QUOTIENT: 65536
-
+# [New in Deneb:EIP7514] 2**3 (= 8)
+MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT: 8
 
 # Fork choice
 # ---------------------------------------------------------------
 # 40%
 PROPOSER_SCORE_BOOST: 40
-# 20%
-REORG_HEAD_WEIGHT_THRESHOLD: 20
-# 160%
-REORG_PARENT_WEIGHT_THRESHOLD: 160
-# `2` epochs
-REORG_MAX_EPOCHS_SINCE_FINALIZATION: 2
 
 # Deposit contract
 # ---------------------------------------------------------------
@@ -89,7 +84,7 @@ GOSSIP_MAX_SIZE: 10485760
 MAX_REQUEST_BLOCKS: 1024
 # `2**8` (= 256)
 EPOCHS_PER_SUBNET_SUBSCRIPTION: 256
-## `MIN_VALIDATOR_WITHDRAWABILITY_DELAY + CHURN_LIMIT_QUOTIENT // 2` (= 33024, ~5 months)
+# `MIN_VALIDATOR_WITHDRAWABILITY_DELAY + CHURN_LIMIT_QUOTIENT // 2` (= 33024, ~5 months)
 MIN_EPOCHS_FOR_BLOCK_REQUESTS: 33024
 # `10 * 2**20` (=10485760, 10 MiB)
 MAX_CHUNK_SIZE: 10485760
@@ -108,4 +103,14 @@ SUBNETS_PER_NODE: 2
 ATTESTATION_SUBNET_COUNT: 64
 ATTESTATION_SUBNET_EXTRA_BITS: 0
 # ceillog2(ATTESTATION_SUBNET_COUNT) + ATTESTATION_SUBNET_EXTRA_BITS
-ATTESTATION_SUBNET_PREFIX_BITS: 6
+ATTESTATION_SUBNET_PREFIX_BITS: 6
+
+# Deneb
+# `2**7` (=128)
+MAX_REQUEST_BLOCKS_DENEB: 128
+# MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK
+MAX_REQUEST_BLOB_SIDECARS: 768
+# `2**12` (= 4096 epochs, ~18 days)
+MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS: 4096
+# `6`
+BLOB_SIDECAR_SUBNET_COUNT: 6

ethereum/spec/src/test/java/tech/pegasys/teku/spec/SpecFactoryTest.java

@@ -40,9 +40,9 @@ public class SpecFactoryTest {
   private static final Set<String> NON_BELLATRIX_NETWORKS = Set.of("swift", "less-swift");
 
   private static final Set<String> CAPELLA_NETWORKS =
-      Set.of("sepolia", "mainnet", "gnosis", "chiado", "lukso");
+      Set.of("mainnet", "gnosis", "chiado", "lukso");
 
-  private static final Set<String> DENEB_NETWORKS = Set.of("prater", "holesky");
+  private static final Set<String> DENEB_NETWORKS = Set.of("prater", "sepolia", "holesky");
 
   @Test
   public void defaultFactoryShouldScheduleBellatrixAndCapellaForMainNet() {