diff --git a/execution_chain/common/common.nim b/execution_chain/common/common.nim
index 933cc4803f..65504685f0 100644
--- a/execution_chain/common/common.nim
+++ b/execution_chain/common/common.nim
@@ -292,7 +292,7 @@ func toHardFork*(
   toHardFork(com.forkTransitionTable, forkDeterminer)
 
 func toHardFork*(com: CommonRef, timestamp: EthTime): HardFork =
-  for fork in countdown(com.forkTransitionTable.timeThresholds.high, Shanghai):
+  for fork in countdown(HardFork.high, Shanghai):
     if com.forkTransitionTable.timeThresholds[fork].isSome and timestamp >= com.forkTransitionTable.timeThresholds[fork].get:
       return fork
 
@@ -306,6 +306,27 @@ func toEVMFork*(com: CommonRef, forkDeterminer: ForkDeterminationInfo): EVMFork
   let fork = com.toHardFork(forkDeterminer)
   ToEVMFork[fork]
 
+func nextFork*(com: CommonRef, currentFork: HardFork): Opt[HardFork] =
+  ## Returns the next hard fork after the given one
+  ## The next fork can also be the last fork
+  if currentFork < Shanghai:
+    return Opt.none(HardFork) 
+  for fork in currentFork .. HardFork.high:
+    if fork > currentFork and com.forkTransitionTable.timeThresholds[fork].isSome:
+      return Opt.some(fork)
+  return Opt.none(HardFork)
+
+func lastFork*(com: CommonRef, currentFork: HardFork): Opt[HardFork] =
+  ## Returns the last hard fork before the given one
+  for fork in countdown(HardFork.high, currentFork):
+    if fork > currentFork and com.forkTransitionTable.timeThresholds[fork].isSome:
+      return Opt.some(HardFork(fork))
+  return Opt.none(HardFork)
+
+func activationTime*(com: CommonRef, fork: HardFork): Opt[EthTime] =
+  ## Returns the activation time of the given hard fork
+  com.forkTransitionTable.timeThresholds[fork]
+
 func toEVMFork*(com: CommonRef, header: Header): EVMFork =
   com.toEVMFork(forkDeterminationInfo(header))
 
@@ -323,6 +344,10 @@ func forkId*(com: CommonRef, head, time: uint64): ForkID {.gcsafe.} =
   ## EIP 2364/2124
   com.forkIdCalculator.newID(head, time)
 
+func forkId*(com: CommonRef, forkActivationTime: EthTime): ForkID {.gcsafe.} =
+  # Only works for timestamp based forks
+  com.forkIdCalculator.newID(0'u64, forkActivationTime.uint64)
+
 func forkId*(com: CommonRef, head: BlockNumber, time: EthTime): ForkID {.gcsafe.} =
   ## EIP 2364/2124
   com.forkIdCalculator.newID(head, time.uint64)
diff --git a/execution_chain/core/tx_pool/tx_desc.nim b/execution_chain/core/tx_pool/tx_desc.nim
index cb2d48c74a..c6b3a51fe7 100644
--- a/execution_chain/core/tx_pool/tx_desc.nim
+++ b/execution_chain/core/tx_pool/tx_desc.nim
@@ -55,15 +55,15 @@ type
     blobTab  : BlobLookupTab
 
 const
-  MAX_POOL_SIZE = 5000
-  MAX_TXS_PER_ACCOUNT = 100
-  TX_ITEM_LIFETIME = initDuration(minutes = 60)
+  MAX_POOL_SIZE = 8000
+  MAX_TXS_PER_ACCOUNT = 500
+  TX_ITEM_LIFETIME = initDuration(minutes = 5)
   TX_MAX_SIZE* = 128 * 1024
   # BLOB_TX_MAX_SIZE is the maximum size a single transaction can have, outside
   # the included blobs. Since blob transactions are pulled instead of pushed,
   # and only a small metadata is kept in ram, there is no critical limit that
   # should be enforced. Still, capping it to some sane limit can never hurt.
-  BLOB_TX_MAX_SIZE* = 1024 * 1024
+  BLOB_TX_MAX_SIZE* = 1024 * 1024 * 2
 
 # ------------------------------------------------------------------------------
 # Private functions
diff --git a/execution_chain/evm/precompiles.nim b/execution_chain/evm/precompiles.nim
index 7bbd7feed5..98ef8e6678 100644
--- a/execution_chain/evm/precompiles.nim
+++ b/execution_chain/evm/precompiles.nim
@@ -110,19 +110,32 @@ const
     paP256VerifyAddress        # paP256Verify
   ]
 
+  precompileNames*: array[Precompiles, string] = [
+    "ECREC",
+    "SHA256",
+    "RIPEMD160",
+    "ID",
+    "MODEXP",
+    "BN254_ADD",
+    "BN254_MUL",
+    "BN254_PAIRING",
+    "BLAKE2F",
+    "KZG_POINT_EVALUATION",
+    "BLS12_G1ADD",
+    "BLS12_G1MSM",
+    "BLS12_G2ADD",
+    "BLS12_G2MSM",
+    "BLS12_PAIRING_CHECK",
+    "BLS12_MAP_FP_TO_G1",
+    "BLS12_MAP_FP2_TO_G2",
+    "P256_VERIFY"
+  ]
+
 
 # ------------------------------------------------------------------------------
 # Private functions
 # ------------------------------------------------------------------------------
 
-func getMaxPrecompile(fork: EVMFork): Precompiles =
-  if fork < FkByzantium: paIdentity
-  elif fork < FkIstanbul: paPairing
-  elif fork < FkCancun: paBlake2bf
-  elif fork < FkPrague: paPointEvaluation
-  elif fork < FkOsaka: paBlsMapG2
-  else: Precompiles.high
-
 func getSignature(c: Computation): EvmResult[SigRes]  =
   # input is Hash, V, R, S
   template data: untyped = c.msg.data
@@ -796,6 +809,14 @@ proc p256verify(c: Computation): EvmResultVoid =
 # Public functions
 # ------------------------------------------------------------------------------
 
+func getMaxPrecompile*(fork: EVMFork): Precompiles =
+  if fork < FkByzantium: paIdentity
+  elif fork < FkIstanbul: paPairing
+  elif fork < FkCancun: paBlake2bf
+  elif fork < FkPrague: paPointEvaluation
+  elif fork < FkOsaka: paBlsMapG2
+  else: Precompiles.high
+
 iterator activePrecompiles*(fork: EVMFork): Address =
   let maxPrecompile = getMaxPrecompile(fork)
   for c in Precompiles.low..maxPrecompile:
diff --git a/execution_chain/rpc/rpc_utils.nim b/execution_chain/rpc/rpc_utils.nim
index 8b79b0b32e..935bf82050 100644
--- a/execution_chain/rpc/rpc_utils.nim
+++ b/execution_chain/rpc/rpc_utils.nim
@@ -10,6 +10,7 @@
 {.push raises: [].}
 
 import
+  stew/endians2,
   std/[sequtils, algorithm],
   ./rpc_types,
   ./params,
@@ -308,3 +309,86 @@ proc createAccessList*(header: Header,
       )
 
     prevTracer = tracer
+
+
+proc populateConfigObject*(com: CommonRef, fork: HardFork): ConfigObject =
+  let
+    cancunSystemContracts: seq[SystemContractPair] = @[
+      SystemContractPair(
+        address: BEACON_ROOTS_ADDRESS,
+        name: "BEACON_ROOTS_ADDRESS"
+      )
+    ]
+    pragueSystemContracts: seq[SystemContractPair] = @[
+      SystemContractPair(
+        address: SYSTEM_ADDRESS,
+        name: "CONSOLIDATION_REQUEST_PREDEPLOY_ADDRESS"
+      ),
+      SystemContractPair(
+        address: com.depositContractAddress(),
+        name: "DEPOSIT_CONTRACT_ADDRESS"
+      ),
+      SystemContractPair(
+        address: HISTORY_STORAGE_ADDRESS,
+        name: "HISTORY_STORAGE_ADDRESS"
+      ),
+      SystemContractPair(
+        address: WITHDRAWAL_REQUEST_PREDEPLOY_ADDRESS,
+        name: "WITHDRAWAL_REQUEST_PREDEPLOY_ADDRESS"
+      )
+    ]
+
+  var configObject = ConfigObject()
+
+  configObject.activationTime = Number com.activationTime(fork).get(EthTime(0))
+  configObject.chainId = com.chainId
+  configObject.forkId = FixedBytes[4] com.forkId(
+    com.activationTime(fork).get(EthTime(0))
+  ).crc.toBytesBE
+  configObject.blobSchedule.max = Number com.maxBlobsPerBlock(fork)
+  configObject.blobSchedule.target = Number com.targetBlobsPerBlock(fork)
+  configObject.blobSchedule.baseFeeUpdateFraction = Number com.baseFeeUpdateFraction(fork)
+
+  # Precompiles
+  let 
+    evmFork = ToEVMFork[fork]
+    lastPrecompile = getMaxPrecompile(evmFork)
+
+  for i in Precompiles.low..lastPrecompile:
+    configObject.precompiles.add PrecompilePair(
+      address: precompileAddrs[i],
+      name: precompileNames[i],
+    )
+
+  # System Contracts
+  if fork == Cancun:
+    configObject.systemContracts = cancunSystemContracts
+  elif fork >= Prague:
+    configObject.systemContracts = cancunSystemContracts & pragueSystemContracts
+  else:
+    configObject.systemContracts = @[]
+
+  return configObject
+
+proc getEthConfigObject*(com: CommonRef, 
+                         chain: ForkedChainRef,
+                         fork: HardFork,
+                         nextFork: Opt[HardFork],
+                         lastFork: Opt[HardFork]): EthConfigObject =
+  ## Returns the EthConfigObject for the given chain.
+  ## This is used to return the `eth_config` object in the JSON-RPC API.
+  var res = EthConfigObject()
+  res.current = com.populateConfigObject(fork)
+
+  if nextFork.isSome:
+    res.next = Opt.some(com.populateConfigObject(nextFork.get))
+  else:
+    res.next = Opt.none(ConfigObject)
+
+  if lastFork.isSome:
+    res.last = Opt.some(com.populateConfigObject(lastFork.get))
+  else:
+    res.last = Opt.none(ConfigObject)
+
+  return res
+
diff --git a/execution_chain/rpc/server_api.nim b/execution_chain/rpc/server_api.nim
index 5258e69470..82b07c1e0f 100644
--- a/execution_chain/rpc/server_api.nim
+++ b/execution_chain/rpc/server_api.nim
@@ -714,3 +714,16 @@ proc setupServerAPI*(api: ServerAPIRef, server: RpcServer, ctx: EthContext) =
     return populateBlockObject(
       uncleHash, uncle, api.getTotalDifficulty(uncleHash), false, true
     )
+
+  server.rpc("eth_config") do() -> EthConfigObject:
+    ## Returns the current, next and last configuration
+    let currentFork = api.com.toHardFork(api.chain.latestHeader.forkDeterminationInfo)
+
+    if currentFork < Shanghai:
+      return nil
+
+    let
+      nextFork = api.com.nextFork(currentFork)
+      lastFork = api.com.lastFork(currentFork)
+
+    return api.com.getEthConfigObject(api.chain, currentFork, nextFork, lastFork)
\ No newline at end of file
diff --git a/execution_chain/sync/beacon/worker_const.nim b/execution_chain/sync/beacon/worker_const.nim
index 63bf86f22a..1f3fcb0735 100644
--- a/execution_chain/sync/beacon/worker_const.nim
+++ b/execution_chain/sync/beacon/worker_const.nim
@@ -48,7 +48,7 @@ const
 
   # ----------------------
 
-  nFetchHeadersFailedInitialPeersThreshold* = 30
+  nFetchHeadersFailedInitialPeersThreshold* = 15
     ## If there are more failing peers than this threshold right at the
     ## begining of a header chain download scrum (before any data received),
     ## then this session (scrum or sprint) is discarded and the suncer is
diff --git a/tests/customgenesis/cancun123.json b/tests/customgenesis/cancun123.json
index 4eec9f6cae..f87e7ea37b 100644
--- a/tests/customgenesis/cancun123.json
+++ b/tests/customgenesis/cancun123.json
@@ -27,6 +27,14 @@
     "alloc": {
       "0x73cf19657412508833f618a15e8251306b3e6ee5": {
         "balance": "0x6d6172697573766477000000"
+      },
+      "0x00000961Ef480Eb55e80D19ad83579A64c007002": {
+        "balance": "0",
+        "code": "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"
+      },
+      "0x0000BBdDc7CE488642fb579F8B00f3a590007251": {
+        "balance": "0",
+        "code": "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"
       }
     },
     "number": "0x0",
diff --git a/tests/test_rpc.nim b/tests/test_rpc.nim
index b7f7b4de95..cd5eb3285d 100644
--- a/tests/test_rpc.nim
+++ b/tests/test_rpc.nim
@@ -184,6 +184,7 @@ proc makeBlobTx(env: var TestEnv, nonce: int): PooledTransaction =
   PooledTransaction(
     tx: tx,
     blobsBundle: BlobsBundle(
+      wrapperVersion: WrapperVersionEIP4844,
       blobs: blobs,
       commitments: @[pooled_txs.KzgCommitment(commitment.bytes)],
       proofs: @[pooled_txs.KzgProof(proof.bytes)]))
@@ -221,6 +222,9 @@ proc setupEnv(envFork: HardFork = MergeFork): TestEnv =
 
   if envFork >= Prague:
     conf.networkParams.config.pragueTime = Opt.some(0.EthTime)
+    conf.networkParams.config.osakaTime = Opt.some(3805601325.EthTime)
+    conf.networkParams.config.bpo1Time = Opt.some(3805701325.EthTime)
+    conf.networkParams.config.bpo2Time = Opt.some(3805801325.EthTime)
 
   let
     com   = setupCom(conf)
@@ -313,7 +317,7 @@ createRpcSigsFromNim(RpcClient):
 
 proc rpcMain*() =
   suite "Remote Procedure Calls":
-    var env = setupEnv()
+    var env = setupEnv(Prague)
     env.generateBlock()
     let
       client = env.client
@@ -372,6 +376,19 @@ proc rpcMain*() =
       let res = await client.eth_chainId()
       check res == com.chainId
 
+    test "eth_config":
+      let res = await client.eth_config()
+      check res.current.chainId == com.chainId
+      check res.current.activationTime.uint64 == 0'u64
+
+      check res.next.isSome() and res.last.isSome()
+
+      check res.next.get().chainId == com.chainId
+      check res.next.get().activationTime.uint64 == 3805601325'u64
+
+      check res.last.get().chainId == com.chainId
+      check res.last.get().activationTime.uint64 == 3805801325'u64
+
     test "eth_syncing":
       let res = await client.eth_syncing()
       if res.syncing == false:
diff --git a/tests/test_txpool.nim b/tests/test_txpool.nim
index b0ec0f2196..db9e0c5e2a 100644
--- a/tests/test_txpool.nim
+++ b/tests/test_txpool.nim
@@ -369,7 +369,7 @@ suite "TxPool test suite":
       gasLimit: 75000
     )
 
-    const MAX_TXS_GENERATED = 100
+    const MAX_TXS_GENERATED = 500
     for i in 0..MAX_TXS_GENERATED-2:
       let ptx = mx.makeTx(tc, acc, i.AccountNonce)
       xp.checkAddTx(ptx)
diff --git a/vendor/nim-web3 b/vendor/nim-web3
index 304afd1897..54ed9d56a6 160000
--- a/vendor/nim-web3
+++ b/vendor/nim-web3
@@ -1 +1 @@
-Subproject commit 304afd1897bc62f7078d10810683f1f7af5f24f1
+Subproject commit 54ed9d56a65589b399978ff3014302dce04cf2c3