diff --git a/beacon_chain/conf.nim b/beacon_chain/conf.nim
index a2f07d4c3..900273b93 100644
--- a/beacon_chain/conf.nim
+++ b/beacon_chain/conf.nim
@@ -639,10 +639,6 @@ type
           desc: "URL of the beacon node REST service"
           name: "rest-url" }: Option[Uri]
 
-        rpcUrlForExit* {.
-          desc: "URL of the beacon node JSON-RPC service"
-          name: "rpc-url" }:  Option[Uri]
-
     of BNStartUpCmd.record:
       case recordCmd* {.command.}: RecordCmd
       of RecordCmd.create:
diff --git a/beacon_chain/deposits.nim b/beacon_chain/deposits.nim
index b8d132fec..0bcdce5cf 100644
--- a/beacon_chain/deposits.nim
+++ b/beacon_chain/deposits.nim
@@ -9,7 +9,7 @@
 import
   std/[os, sequtils, times],
   bearssl, chronicles,
-  ./spec/eth2_apis/[rpc_beacon_client, rest_beacon_client],
+  ./spec/eth2_apis/rest_beacon_client,
   ./spec/signatures,
   ./validators/keystore_management,
   "."/[conf, beacon_clock, filepath]
@@ -108,85 +108,6 @@ proc askForExitConfirmation(): ClientExitAction =
   else:
     ClientExitAction.quiting
 
-proc rpcValidatorExit(config: BeaconNodeConf) {.async.} =
-  warn "The JSON-PRC API is deprecated. Consider using the REST API"
-
-  let port = try:
-    let value = parseInt(config.rpcUrlForExit.get.port)
-    if value < Port.low.int or value > Port.high.int:
-      raise newException(ValueError,
-        "The port number must be between " & $Port.low & " and " & $Port.high)
-    Port value
-  except CatchableError as err:
-    fatal "Invalid port number", err = err.msg
-    quit 1
-
-  let rpcClient = newRpcHttpClient()
-
-  try:
-    await connect(rpcClient, config.rpcUrlForExit.get.hostname, port,
-                  secure = config.rpcUrlForExit.get.scheme in ["https", "wss"])
-  except CatchableError as err:
-    fatal "Failed to connect to the beacon node RPC service", err = err.msg
-    quit 1
-
-  let (validator, validatorIdx, _, _) = try:
-    await rpcClient.get_v1_beacon_states_stateId_validators_validatorId(
-      "head", config.exitedValidator)
-  except CatchableError as err:
-    fatal "Failed to obtain information for validator", err = err.msg
-    quit 1
-
-  let exitAtEpoch = if config.exitAtEpoch.isSome:
-    Epoch config.exitAtEpoch.get
-  else:
-    let headSlot = try:
-      await rpcClient.getBeaconHead()
-    except CatchableError as err:
-      fatal "Failed to obtain the current head slot", err = err.msg
-      quit 1
-    headSlot.epoch
-
-  let fork = try:
-    await rpcClient.get_v1_beacon_states_fork("head")
-  except CatchableError as err:
-    fatal "Failed to obtain the fork id of the head state", err = err.msg
-    quit 1
-
-  let genesis_validators_root = try:
-    (await rpcClient.get_v1_beacon_genesis()).genesis_validators_root
-  except CatchableError as err:
-    fatal "Failed to obtain the genesis validators root of the network",
-           err = err.msg
-    quit 1
-
-  let
-    validatorKeyAsStr = "0x" & $validator.pubkey
-    signedExit = getSignedExitMessage(config,
-                                      validatorKeyAsStr,
-                                      exitAtEpoch,
-                                      validatorIdx,
-                                      fork,
-                                      genesis_validators_root)
-
-  try:
-    let choice = askForExitConfirmation()
-    if choice == ClientExitAction.quiting:
-      quit 0
-    elif choice == ClientExitAction.confirmation:
-      let success = await rpcClient.post_v1_beacon_pool_voluntary_exits(signedExit)
-      if success:
-        echo "Successfully published voluntary exit for validator " &
-              $validatorIdx & "(" & validatorKeyAsStr[0..9] & ")."
-        quit 0
-      else:
-        echo "The voluntary exit was not submitted successfully. Please try again."
-        quit 1
-  except CatchableError as err:
-    fatal "Failed to send the signed exit message to the beacon node RPC",
-           err = err.msg
-    quit 1
-
 proc restValidatorExit(config: BeaconNodeConf) {.async.} =
   let
     address = if isNone(config.restUrlForExit):
@@ -327,12 +248,7 @@ proc restValidatorExit(config: BeaconNodeConf) {.async.} =
     quit 1
 
 proc handleValidatorExitCommand(config: BeaconNodeConf) {.async.} =
-  if isSome(config.restUrlForExit):
-    await restValidatorExit(config)
-  elif isSome(config.rpcUrlForExit):
-    await rpcValidatorExit(config)
-  else:
-    await restValidatorExit(config)
+  await restValidatorExit(config)
 
 proc doDeposits*(config: BeaconNodeConf, rng: var BrHmacDrbgContext) {.
     raises: [Defect, CatchableError].} =
diff --git a/beacon_chain/spec/eth2_apis/eth2_json_rpc_serialization.nim b/beacon_chain/spec/eth2_apis/eth2_json_rpc_serialization.nim
deleted file mode 100644
index 1c14cb284..000000000
--- a/beacon_chain/spec/eth2_apis/eth2_json_rpc_serialization.nim
+++ /dev/null
@@ -1,150 +0,0 @@
-# beacon_chain
-# Copyright (c) 2018-2021 Status Research & Development GmbH
-# Licensed and distributed under either of
-#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
-#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
-# at your option. This file may not be copied, modified, or distributed except according to those terms.
-
-{.push raises: [Defect].}
-
-# The serializations in this file are approximations of
-# https://ethereum.github.io/eth2.0-APIs/#/ but where written before the standard
-# had materialized - they've now made it out to releases which means the easiest
-# thing to do is to maintain them as-is, even if there are mismatches. In
-# particular, numbers are serialized as strings in the eth2 API - here, they
-# use numbers instead.
-#
-# Using numbers creates problems - uint64 which often appears in eth2 can't
-# portably be represented since many json parsers balk at anything >2^53 and
-# start losing precision. The other issue is the json parser in nim - it can't
-# handle numbers >2^63, either crashing or giving wrong results:
-# https://github.com/status-im/nimbus-eth2/issues/2430
-
-import
-  # Standard library
-  std/[typetraits],
-
-  # Nimble packages
-  stew/byteutils,
-  json_rpc/jsonmarshal,
-  ssz_serialization/types,
-
-  # Local modules
-  ../datatypes/base
-
-export jsonmarshal, base
-
-proc toJsonHex(data: openArray[byte]): string =
-  # Per the eth2 API spec, hex arrays are printed with leading 0x
-  "0x" & toHex(data)
-
-proc fromJson*(n: JsonNode, argName: string, result: var ValidatorPubKey) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  result = ValidatorPubKey.fromHex(n.getStr()).tryGet()
-
-proc `%`*(pubkey: ValidatorPubKey): JsonNode =
-  newJString(toJsonHex(toRaw(pubkey)))
-
-proc fromJson*(n: JsonNode, argName: string, result: var List) {.raises: [Defect, ValueError].} =
-  fromJson(n, argName, asSeq result)
-
-proc `%`*(list: List): JsonNode = %(asSeq(list))
-
-proc fromJson*(n: JsonNode, argName: string, result: var BitList) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  result = type(result)(hexToSeqByte(n.getStr()))
-
-proc `%`*(bitlist: BitList): JsonNode =
-  newJString(toJsonHex(seq[byte](BitSeq(bitlist))))
-
-proc fromJson*(n: JsonNode, argName: string, result: var ValidatorSig) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  result = ValidatorSig.fromHex(n.getStr()).tryGet()
-
-proc `%`*(value: ValidatorSig): JsonNode =
-  newJString(toJsonHex(toRaw(value)))
-
-proc fromJson*(n: JsonNode, argName: string, result: var TrustedSig) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  hexToByteArray(n.getStr(), result.data)
-
-proc `%`*(value: TrustedSig): JsonNode =
-  newJString(toJsonHex(toRaw(value)))
-
-proc fromJson*(n: JsonNode, argName: string, result: var Version) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  hexToByteArray(n.getStr(), array[4, byte](result))
-
-proc fromJson*(n: JsonNode, argName: string, result: var JustificationBits) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  result = JustificationBits(hexToByteArray(n.getStr(), 1)[0])
-
-proc `%`*(value: Version): JsonNode =
-  newJString(toJsonHex(distinctBase(value)))
-
-template genFromJsonForIntType(T: untyped) =
-  proc fromJson*(n: JsonNode, argName: string, result: var T) {.raises: [Defect, ValueError].} =
-    n.kind.expect(JInt, argName)
-    let asInt = n.getBiggestInt()
-    when T is Epoch:
-      if asInt == -1:
-        # TODO: This is a major hack here. Since the json library
-        # cannot handle properly 0xffffffff when serializing and
-        # deserializing uint64 values, we detect one known wrong
-        # result, appering in most `Validator` records. To fix
-        # this issue, we'll have to switch to nim-json-serialization
-        # in nim-json-rpc or work towards implementing a fix upstream.
-        result = FAR_FUTURE_EPOCH
-        return
-    if asInt < 0:
-      # signed -> unsigned conversions are unchecked
-      # https://github.com/nim-lang/RFCs/issues/175
-      raise newException(
-        ValueError, "JSON-RPC input is an unexpected negative value")
-    result = T(asInt)
-
-genFromJsonForIntType(Epoch)
-genFromJsonForIntType(Slot)
-genFromJsonForIntType(CommitteeIndex)
-genFromJsonForIntType(ValidatorIndex)
-
-proc `%`*(value: Epoch): JsonNode =
-  # In nim <= 1.2.6, `uint64` was silently cast to int64 resulting in
-  # FAR_FUTURE_EPOCH showing as -1 - this is a hack to maintain that behaviour
-  # in a world where a Defect or an actual correct value is used - the eth2
-  # REST api instead prints all epochs and similar large numbers as strings!
-  # See also https://github.com/status-im/nimbus-eth2/issues/2430
-  newJInt(cast[int64](value))
-
-proc `%`*(value: Slot): JsonNode =
-  newJInt(cast[int64](value))
-
-proc `%`*(value: GraffitiBytes): JsonNode =
-  newJString(toJsonHex(distinctBase(value)))
-
-proc fromJson*(n: JsonNode, argName: string, value: var GraffitiBytes) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  value = GraffitiBytes.init n.getStr()
-
-proc `%`*(value: CommitteeIndex): JsonNode =
-  newJInt(value.BiggestInt)
-
-proc `%`*(value: ValidatorIndex): JsonNode =
-  newJInt(value.BiggestInt)
-
-proc `%`*(value: Eth2Digest): JsonNode =
-  newJString(toJsonHex(value.data))
-
-proc fromJson*(n: JsonNode, argName: string, result: var Eth2Digest) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  hexToByteArray(n.getStr(), result.data)
-
-proc `%`*(value: BitSeq): JsonNode =
-  newJString(toJsonHex(value.bytes))
-
-proc fromJson*(n: JsonNode, argName: string, result: var BitSeq) {.raises: [Defect, ValueError].} =
-  n.kind.expect(JString, argName)
-  result = BitSeq(hexToSeqByte(n.getStr()))
-
-proc `%`*(value: JustificationBits): JsonNode =
-  newJString(toJsonHex([distinctBase(value)]))
diff --git a/beacon_chain/spec/eth2_apis/rpc_beacon_calls.nim b/beacon_chain/spec/eth2_apis/rpc_beacon_calls.nim
deleted file mode 100644
index 388bb520e..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_beacon_calls.nim
+++ /dev/null
@@ -1,59 +0,0 @@
-import
-  options,
-  rpc_types,
-  ../datatypes/phase0
-
-proc get_v1_beacon_genesis(): RpcBeaconGenesis
-
-# TODO stateId is part of the REST path
-proc get_v1_beacon_states_root(stateId: string): Eth2Digest
-
-# TODO stateId is part of the REST path
-proc get_v1_beacon_states_fork(stateId: string): Fork
-
-# TODO stateId is part of the REST path
-proc get_v1_beacon_states_finality_checkpoints(
-  stateId: string): RpcBeaconStatesFinalityCheckpoints
-
-# TODO stateId is part of the REST path
-proc get_v1_beacon_states_stateId_validators(
-  stateId: string, validatorIds: seq[string],
-  status: string): seq[RpcBeaconStatesValidators]
-
-# TODO stateId and validatorId are part of the REST path
-proc get_v1_beacon_states_stateId_validators_validatorId(
-  stateId: string, validatorId: string): RpcBeaconStatesValidators
-
-# TODO stateId and epoch are part of the REST path
-proc get_v1_beacon_states_stateId_committees_epoch(stateId: string,
-  epoch: uint64, index: uint64, slot: uint64): seq[RpcBeaconStatesCommittees]
-
-proc get_v1_beacon_headers(slot: uint64, parent_root: Eth2Digest): seq[RpcBeaconHeaders]
-
-# TODO blockId is part of the REST path
-proc get_v1_beacon_headers_blockId(blockId: string):
-  tuple[canonical: bool, header: SignedBeaconBlockHeader]
-
-# TODO blockId is part of the REST path
-proc get_v1_beacon_blocks_blockId(blockId: string): phase0.SignedBeaconBlock
-
-# TODO blockId is part of the REST path
-proc get_v1_beacon_blocks_blockId_root(blockId: string): Eth2Digest
-
-# TODO blockId is part of the REST path
-proc get_v1_beacon_blocks_blockId_attestations(blockId: string): seq[Attestation]
-
-# TODO POST /v1/beacon/pool/attester_slashings
-# TODO POST /v1/beacon/pool/proposer_slashings
-# TODO POST /v1/beacon/pool/attestations
-proc get_v1_beacon_pool_attestations(slot: Option[uint64], committee_index: Option[uint64]): seq[RpcAttestation]
-proc post_v1_beacon_pool_attestations(attestation: Attestation): bool
-
-proc get_v1_beacon_pool_attester_slashings(): seq[AttesterSlashing]
-
-proc get_v1_beacon_pool_proposer_slashings(): seq[ProposerSlashing]
-
-proc get_v1_beacon_pool_voluntary_exits(): seq[VoluntaryExit]
-proc post_v1_beacon_pool_voluntary_exits(exit: SignedVoluntaryExit): bool
-
-proc get_v1_config_fork_schedule(): seq[Fork]
diff --git a/beacon_chain/spec/eth2_apis/rpc_beacon_client.nim b/beacon_chain/spec/eth2_apis/rpc_beacon_client.nim
deleted file mode 100644
index 079738ddc..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_beacon_client.nim
+++ /dev/null
@@ -1,16 +0,0 @@
-import
-  std/os,
-  json_rpc/rpcclient,
-  "."/[rpc_types, eth2_json_rpc_serialization],
-  ../datatypes/[phase0, altair]
-
-export
-  rpcclient,
-  rpc_types,
-  eth2_json_rpc_serialization
-
-createRpcSigs(RpcClient, currentSourcePath.parentDir / "rpc_beacon_calls.nim")
-createRpcSigs(RpcClient, currentSourcePath.parentDir / "rpc_debug_calls.nim")
-createRpcSigs(RpcClient, currentSourcePath.parentDir / "rpc_nimbus_calls.nim")
-createRpcSigs(RpcClient, currentSourcePath.parentDir / "rpc_node_calls.nim")
-createRpcSigs(RpcClient, currentSourcePath.parentDir / "rpc_validator_calls.nim")
diff --git a/beacon_chain/spec/eth2_apis/rpc_debug_calls.nim b/beacon_chain/spec/eth2_apis/rpc_debug_calls.nim
deleted file mode 100644
index 24dc9e4cb..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_debug_calls.nim
+++ /dev/null
@@ -1,8 +0,0 @@
-import
-  rpc_types,
-  ../datatypes/phase0
-
-export rpc_types
-
-proc get_v1_debug_beacon_states_stateId(stateId: string): phase0.BeaconState
-proc get_v1_debug_beacon_heads(): seq[tuple[root: Eth2Digest, slot: Slot]]
diff --git a/beacon_chain/spec/eth2_apis/rpc_nimbus_calls.nim b/beacon_chain/spec/eth2_apis/rpc_nimbus_calls.nim
deleted file mode 100644
index acb664915..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_nimbus_calls.nim
+++ /dev/null
@@ -1,17 +0,0 @@
-import
-  rpc_types
-
-export rpc_types
-
-proc getBeaconHead(): Slot
-proc getChainHead(): JsonNode
-proc getSyncing(): bool
-proc getNetworkPeerId(): string
-proc getNetworkPeers(): seq[string]
-proc getNodeVersion(): string
-proc peers(): JsonNode
-proc setLogLevel(level: string)
-proc getEth1Chain(): JsonNode
-proc getEth1ProposalData(): JsonNode
-proc getChronosFutures(): JsonNode
-proc getGossipSubPeers(): JsonNode
diff --git a/beacon_chain/spec/eth2_apis/rpc_node_calls.nim b/beacon_chain/spec/eth2_apis/rpc_node_calls.nim
deleted file mode 100644
index f75761c8c..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_node_calls.nim
+++ /dev/null
@@ -1,11 +0,0 @@
-import
-  options,
-  rpc_types
-
-proc get_v1_node_identity(): RpcNodeIdentity
-proc get_v1_node_version(): JsonNode
-proc get_v1_node_syncing(): RpcSyncInfo
-proc get_v1_node_health(): JsonNode
-
-proc get_v1_node_peers(state: Option[seq[string]],
-                       direction: Option[seq[string]]): seq[RpcNodePeer]
diff --git a/beacon_chain/spec/eth2_apis/rpc_types.nim b/beacon_chain/spec/eth2_apis/rpc_types.nim
index b056978a4..81b6845e5 100644
--- a/beacon_chain/spec/eth2_apis/rpc_types.nim
+++ b/beacon_chain/spec/eth2_apis/rpc_types.nim
@@ -1,67 +1,16 @@
 # beacon_chain
-# Copyright (c) 2018-2021 Status Research & Development GmbH
+# Copyright (c) 2018-2022 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
 # at your option. This file may not be copied, modified, or distributed except according to those terms.
 
-# Types used in the JSON-RPC (legacy) API - these are generally derived from
-# the common REST API, https://ethereum.github.io/eth2.0-APIs/#/
-
 {.push raises: [Defect].}
 
-import
-  ../datatypes/[phase0, altair]
-
-export phase0, altair
+import ../datatypes/base
+export base
 
 type
-  RpcAttesterDuties* = tuple
-    public_key: ValidatorPubKey
-    validator_index: ValidatorIndex
-    committee_index: CommitteeIndex
-    committee_length: uint64
-    validator_committee_index: uint64
-    slot: Slot
-
-  RpcValidatorDuties* = tuple
-    public_key: ValidatorPubKey
-    validator_index: ValidatorIndex
-    slot: Slot
-
-  RpcBeaconGenesis* = tuple
-    genesis_time: uint64
-    genesis_validators_root: Eth2Digest
-    genesis_fork_version: Version
-
-  RpcBeaconStatesFinalityCheckpoints* = tuple
-    previous_justified: Checkpoint
-    current_justified: Checkpoint
-    finalized: Checkpoint
-
-  RpcBeaconStatesValidators* = tuple
-    validator: Validator
-    index: uint64
-    status: string
-    balance: uint64
-
-  RpcBeaconStatesCommittees* = tuple
-    index: uint64
-    slot: uint64
-    validators: seq[uint64] # each object in the sequence should have an index field...
-
-  RpcBeaconHeaders* = tuple
-    root: Eth2Digest
-    canonical: bool
-    header: SignedBeaconBlockHeader
-
-  RpcNodeIdentity* = tuple
-    peer_id: string
-    enr: string
-    p2p_addresses: seq[string]
-    discovery_addresses: seq[string]
-    metadata: tuple[seq_number: uint64, attnets: string]
-
   RpcNodePeer* = tuple
     peer_id: string
     enr: string
@@ -71,21 +20,6 @@ type
     agent: string # This is not part of specification
     proto: string # This is not part of specification
 
-  RpcNodePeerCount* = tuple
-    disconnected: int
-    connecting: int
-    connected: int
-    disconnecting: int
-
-  RpcAttestation* = tuple
-    aggregation_bits: string
-    data: AttestationData
-    signature: ValidatorSig
-
-  RpcBalance* = tuple
-    index: uint64
-    balance: uint64
-
   RpcSyncInfo* = tuple
     head_slot: Slot
     sync_distance: uint64
diff --git a/beacon_chain/spec/eth2_apis/rpc_validator_calls.nim b/beacon_chain/spec/eth2_apis/rpc_validator_calls.nim
deleted file mode 100644
index f09d3037c..000000000
--- a/beacon_chain/spec/eth2_apis/rpc_validator_calls.nim
+++ /dev/null
@@ -1,26 +0,0 @@
-import
-  options,
-  rpc_types
-
-# calls that return a bool are actually without a return type in the main REST API
-# spec but nim-json-rpc requires that all RPC calls have a return type.
-
-proc get_v1_validator_block(slot: Slot, graffiti: GraffitiBytes, randao_reveal: ValidatorSig): phase0.BeaconBlock
-
-proc get_v1_validator_attestation_data(slot: Slot, committee_index: CommitteeIndex): AttestationData
-
-proc get_v1_validator_aggregate_attestation(slot: Slot, attestation_data_root: Eth2Digest): Attestation
-
-proc post_v1_validator_aggregate_and_proofs(payload: SignedAggregateAndProof): bool
-
-# TODO epoch is part of the REST path
-proc get_v1_validator_duties_attester(epoch: Epoch, public_keys: seq[ValidatorPubKey]): seq[RpcAttesterDuties]
-
-# TODO epoch is part of the REST path
-proc get_v1_validator_duties_proposer(epoch: Epoch): seq[RpcValidatorDuties]
-
-proc post_v1_validator_beacon_committee_subscriptions(committee_index: CommitteeIndex,
-                                                      slot: Slot,
-                                                      aggregator: bool,
-                                                      validator_pubkey: ValidatorPubKey,
-                                                      slot_signature: ValidatorSig): bool