diff --git a/apis/builder/blinded_blocks.yaml b/apis/builder/blinded_blocks.yaml
index affa7ad..defd7aa 100644
--- a/apis/builder/blinded_blocks.yaml
+++ b/apis/builder/blinded_blocks.yaml
@@ -1,6 +1,6 @@
 post:
   operationId: "submitBlindedBlock"
-  summary: Submit a signed blinded block and get unblinded execution payload.
+  summary: Submit a signed blinded block and get unblinded execution payload and blobs sidecar.
   description: |
     Submits a `SignedBlindedBeaconBlock` to the builder, binding the proposer
     to the block. The builder is now able to unblind the transactions in
@@ -19,9 +19,15 @@ post:
         schema:
           oneOf:
             - $ref: "../../builder-oapi.yaml#/components/schemas/Bellatrix.SignedBlindedBeaconBlock"
+            - $ref: "../../builder-oapi.yaml#/components/schemas/Capella.SignedBlindedBeaconBlock"
+            - $ref: "../../builder-oapi.yaml#/components/schemas/EIP4844.SignedBlindedBeaconBlock"
         examples:
           bellatrix:
             $ref: "../../builder-oapi.yaml#/components/examples/Bellatrix.SignedBlindedBeaconBlock"
+          capella:
+            $ref: "../../builder-oapi.yaml#/components/examples/Capella.SignedBlindedBeaconBlock"
+          eip4844:
+            $ref: "../../builder-oapi.yaml#/components/examples/EIP4844.SignedBlindedBeaconBlock"
 
   responses:
     "200":
@@ -34,14 +40,20 @@ post:
             properties:
               version:
                 type: string
-                enum: [ bellatrix ]
+                enum: [ bellatrix, capella, eip4844 ]
                 example: "bellatrix"
               data:
                 oneOf:
                   - $ref: "../../builder-oapi.yaml#/components/schemas/Bellatrix.ExecutionPayload"
+                  - $ref: "../../builder-oapi.yaml#/components/schemas/Capella.ExecutionPayload"
+                  - $ref: "../../builder-oapi.yaml#/components/schemas/EIP4844.ExecutionPayloadAndBlobsSidecar"
           examples:
             bellatrix:
               $ref: "../../builder-oapi.yaml#/components/examples/Bellatrix.ExecutionPayload"
+            capella:
+              $ref: "../../builder-oapi.yaml#/components/examples/Capella.ExecutionPayload"
+            eip4844:
+              $ref: "../../builder-oapi.yaml#/components/examples/EIP4844.ExecutionPayloadAndBlobsSidecar"
     "400":
       description: Error response.
       content:
diff --git a/apis/builder/header.yaml b/apis/builder/header.yaml
index cc07973..d7c0406 100644
--- a/apis/builder/header.yaml
+++ b/apis/builder/header.yaml
@@ -50,14 +50,20 @@ get:
             properties:
               version:
                 type: string
-                enum: [ bellatrix ]
+                enum: [ bellatrix, capella, eip4844 ]
                 example: "bellatrix"
               data:
                 oneOf:
                  - $ref: "../../builder-oapi.yaml#/components/schemas/Bellatrix.SignedBuilderBid"
+                 - $ref: "../../builder-oapi.yaml#/components/schemas/Capella.SignedBuilderBid"
+                 - $ref: "../../builder-oapi.yaml#/components/schemas/EIP4844.SignedBuilderBid"
           examples:
             bellatrix:
               $ref: "../../builder-oapi.yaml#/components/examples/Bellatrix.SignedBuilderBid"
+            capella:
+              $ref: "../../builder-oapi.yaml#/components/examples/Capella.SignedBuilderBid"
+            eip4844:
+              $ref: "../../builder-oapi.yaml#/components/examples/EIP4844.SignedBuilderBid"
     "204":
       description: No header is available.
     "400":
diff --git a/beacon-apis b/beacon-apis
index c39ba03..77907ea 160000
--- a/beacon-apis
+++ b/beacon-apis
@@ -1 +1 @@
-Subproject commit c39ba03485bbe53715b3e8c706a6fbeb6eb61a76
+Subproject commit 77907ea6db2a50bbf6efd44a6b15ea19c2a3b521
diff --git a/builder-oapi.yaml b/builder-oapi.yaml
index e23ee99..50000aa 100644
--- a/builder-oapi.yaml
+++ b/builder-oapi.yaml
@@ -61,13 +61,23 @@ components:
       $ref: "./beacon-apis/types/bellatrix/execution_payload.yaml#/Bellatrix/ExecutionPayload"
     Bellatrix.SignedBlindedBeaconBlock:
       $ref: "./beacon-apis/types/bellatrix/block.yaml#/Bellatrix/SignedBlindedBeaconBlock"
-
     Bellatrix.SignedBuilderBid:
       $ref: "./types/bellatrix/bid.yaml#/Bellatrix/SignedBuilderBid"
+    Capella.ExecutionPayload:
+      $ref: "./beacon-apis/types/capella/execution_payload.yaml#/Capella/ExecutionPayload"
+    Capella.SignedBlindedBeaconBlock:
+      $ref: "./beacon-apis/types/capella/block.yaml#/Capella/SignedBlindedBeaconBlock"
+    Capella.SignedBuilderBid:
+      $ref: "./types/capella/bid.yaml#/Capella/SignedBuilderBid"
+    EIP4844.SignedBlindedBeaconBlock:
+      $ref: "./beacon-apis/types/eip4844/block.yaml#/EIP4844/SignedBlindedBeaconBlock"
+    EIP4844.SignedBuilderBid:
+      $ref: "./types/eip4844/bid.yaml#/EIP4844/SignedBuilderBid"
+    EIP4844.ExecutionPayloadAndBlobsSidecar:
+      $ref: "./types/eip4844/execution_payload_and_blobs_sidecar.yaml#/EIP4844/ExecutionPayloadAndBlobsSidecar"
     SignedValidatorRegistration:
       $ref: "./beacon-apis/types/registration.yaml#/SignedValidatorRegistration"
 
-
   responses:
     InternalError:
       $ref: "./types/http.yaml#/InternalError"
@@ -79,3 +89,15 @@ components:
       $ref: "./examples/bellatrix/execution_payload.json"
     Bellatrix.SignedBuilderBid:
       $ref: "./examples/bellatrix/signed_builder_bid.json"
+    Capella.SignedBlindedBeaconBlock:
+      $ref: "./examples/capella/signed_blinded_beacon_block.json"
+    Capella.ExecutionPayload:
+      $ref: "./examples/capella/execution_payload.json"
+    Capella.SignedBuilderBid:
+      $ref: "./examples/capella/signed_builder_bid.json"
+    EIP4844.SignedBlindedBeaconBlock:
+      $ref: "./examples/eip4844/signed_blinded_beacon_block.json"
+    EIP4844.ExecutionPayloadAndBlobsSidecar:
+      $ref: "./examples/eip4844/execution_payload_and_blobs_sidecar.json"
+    EIP4844.SignedBuilderBid:
+      $ref: "./examples/eip4844/signed_builder_bid.json"
diff --git a/examples/capella/execution_payload.json b/examples/capella/execution_payload.json
new file mode 100644
index 0000000..7681160
--- /dev/null
+++ b/examples/capella/execution_payload.json
@@ -0,0 +1,31 @@
+{
+  "value": {
+    "version": "capella",
+    "data": {
+      "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+      "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+      "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "block_number": "1",
+      "gas_limit": "1",
+      "gas_used": "1",
+      "timestamp": "1",
+      "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "base_fee_per_gas": "1",
+      "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "transactions": [
+        "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+      ],
+      "withdrawals": [
+        {
+          "index": "1",
+          "validator_index": "1",
+          "address": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+          "amount": "32000000000"
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/examples/capella/signed_blinded_beacon_block.json b/examples/capella/signed_blinded_beacon_block.json
new file mode 100644
index 0000000..a3e39ff
--- /dev/null
+++ b/examples/capella/signed_blinded_beacon_block.json
@@ -0,0 +1,158 @@
+{
+  "value": {
+    "message": {
+      "slot": "1",
+      "proposer_index": "1",
+      "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "body": {
+        "randao_reveal": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+        "eth1_data": {
+          "deposit_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "deposit_count": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "graffiti": "0xdeadbeefc0ffee",
+        "proposer_slashings": [
+          {
+            "signed_header_1": {
+              "message": {
+                "slot": "1",
+                "proposer_index": "1",
+                "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            },
+            "signed_header_2": {
+              "message": {
+                "slot": "1",
+                "proposer_index": "1",
+                "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          }
+        ],
+        "attester_slashings": [
+          {
+            "attestation_1": {
+              "attesting_indices": [
+                "1"
+              ],
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+              "data": {
+                "slot": "1",
+                "index": "1",
+                "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "source": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "target": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                }
+              }
+            },
+            "attestation_2": {
+              "attesting_indices": [
+                "1"
+              ],
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+              "data": {
+                "slot": "1",
+                "index": "1",
+                "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "source": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "target": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                }
+              }
+            }
+          }
+        ],
+        "attestations": [
+          {
+            "aggregation_bits": "0x01",
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+            "data": {
+              "slot": "1",
+              "index": "1",
+              "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+              "source": {
+                "epoch": "1",
+                "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "target": {
+                "epoch": "1",
+                "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              }
+            }
+          }
+        ],
+        "deposits": [
+          {
+            "proof": [
+              "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+            ],
+            "data": {
+              "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+              "withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+              "amount": "1",
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          }
+        ],
+        "voluntary_exits": [
+          {
+            "message": {
+              "epoch": "1",
+              "validator_index": "1"
+            },
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+          }
+        ],
+        "sync_aggregate": {
+          "sync_committee_bits": "0x01",
+          "sync_committee_signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+        },
+        "execution_payload_header": {
+          "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+          "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+          "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "block_number": "1",
+          "gas_limit": "1",
+          "gas_used": "1",
+          "timestamp": "1",
+          "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "base_fee_per_gas": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "bls_to_execution_changes": [
+          {
+            "message": {
+              "validator_index": "1",
+              "from_bls_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+              "to_execution_address": "0xabcf8e0d4e9587369b2301d0790347320302cc09"
+            },
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+          }
+        ]
+      }
+    },
+    "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+  }
+}
diff --git a/examples/capella/signed_builder_bid.json b/examples/capella/signed_builder_bid.json
new file mode 100644
index 0000000..e245392
--- /dev/null
+++ b/examples/capella/signed_builder_bid.json
@@ -0,0 +1,29 @@
+{
+  "value": {
+    "version": "capella",
+    "data": {
+      "message": {
+        "header": {
+          "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+          "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+          "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "block_number": "1",
+          "gas_limit": "1",
+          "gas_used": "1",
+          "timestamp": "1",
+          "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "base_fee_per_gas": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "value": "1",
+        "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+      },
+      "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+    }
+  }
+}
diff --git a/examples/eip4844/execution_payload_and_blobs_sidecar.json b/examples/eip4844/execution_payload_and_blobs_sidecar.json
new file mode 100644
index 0000000..fe73f9c
--- /dev/null
+++ b/examples/eip4844/execution_payload_and_blobs_sidecar.json
@@ -0,0 +1,42 @@
+{
+  "value": {
+    "execution_payload": {
+      "version": "eip4844",
+      "data": {
+        "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+        "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+        "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "block_number": "1",
+        "gas_limit": "1",
+        "gas_used": "1",
+        "timestamp": "1",
+        "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "base_fee_per_gas": "1",
+        "excess_data_gas": "1",
+        "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "transactions": [
+          "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+        ],
+        "withdrawals": [
+          {
+            "index": "1",
+            "validator_index": "1",
+            "address": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+            "amount": "32000000000"
+          }
+        ]
+      }
+    },
+    "blobs_sidecar": {
+      "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "beacon_block_slot": 4844,
+      "blobs": [
+        "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+      ],
+      "kzg_aggregated_proof": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+    }
+  }
+}
\ No newline at end of file
diff --git a/examples/eip4844/signed_beacon_block_and_blobs_sidecar.json b/examples/eip4844/signed_beacon_block_and_blobs_sidecar.json
new file mode 100644
index 0000000..69f4993
--- /dev/null
+++ b/examples/eip4844/signed_beacon_block_and_blobs_sidecar.json
@@ -0,0 +1,181 @@
+{
+  "value": {
+    "beacon_block": {
+      "message": {
+        "slot": "1",
+        "proposer_index": "1",
+        "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "body": {
+          "randao_reveal": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+          "eth1_data": {
+            "deposit_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "deposit_count": "1",
+            "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+          },
+          "graffiti": "0xdeadbeefc0ffee",
+          "proposer_slashings": [
+            {
+              "signed_header_1": {
+                "message": {
+                  "slot": "1",
+                  "proposer_index": "1",
+                  "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+              },
+              "signed_header_2": {
+                "message": {
+                  "slot": "1",
+                  "proposer_index": "1",
+                  "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+              }
+            }
+          ],
+          "attester_slashings": [
+            {
+              "attestation_1": {
+                "attesting_indices": [
+                  "1"
+                ],
+                "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+                "data": {
+                  "slot": "1",
+                  "index": "1",
+                  "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "source": {
+                    "epoch": "1",
+                    "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                  },
+                  "target": {
+                    "epoch": "1",
+                    "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                  }
+                }
+              },
+              "attestation_2": {
+                "attesting_indices": [
+                  "1"
+                ],
+                "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+                "data": {
+                  "slot": "1",
+                  "index": "1",
+                  "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                  "source": {
+                    "epoch": "1",
+                    "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                  },
+                  "target": {
+                    "epoch": "1",
+                    "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                  }
+                }
+              }
+            }
+          ],
+          "attestations": [
+            {
+              "aggregation_bits": "0x01",
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+              "data": {
+                "slot": "1",
+                "index": "1",
+                "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "source": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "target": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                }
+              }
+            }
+          ],
+          "deposits": [
+            {
+              "proof": [
+                "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              ],
+              "data": {
+                "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+                "withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "amount": "1",
+                "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+              }
+            }
+          ],
+          "voluntary_exits": [
+            {
+              "message": {
+                "epoch": "1",
+                "validator_index": "1"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          ],
+          "sync_aggregate": {
+            "sync_committee_bits": "0x01",
+            "sync_committee_signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+          },
+          "execution_payload": {
+            "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+            "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+            "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "block_number": "1",
+            "gas_limit": "1",
+            "gas_used": "1",
+            "timestamp": "1",
+            "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "base_fee_per_gas": "1",
+            "excess_data_gas": "1",
+            "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+            "transactions": [
+              "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+            ],
+            "withdrawals": [
+              {
+                "index": "1",
+                "validator_index": "1",
+                "address": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+                "amount": "32000000000"
+              }
+            ]
+          },
+          "bls_to_execution_changes": [
+            {
+              "message": {
+                "validator_index": "1",
+                "from_bls_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+                "to_execution_address": "0xabcf8e0d4e9587369b2301d0790347320302cc09"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          ],
+          "blob_kzg_commitments": [
+            "0xa94170080872584e54a1cf092d845703b13907f2e6b3b1c0ad573b910530499e3bcd48c6378846b80d2bfa58c81cf3d5"
+          ]
+        }
+      },
+      "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+    },
+    "blobs_sidecar": {
+      "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "beacon_block_slot": 4844,
+      "blobs": [
+        "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+      ],
+      "kzg_aggregated_proof": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+    }
+  }
+}
\ No newline at end of file
diff --git a/examples/eip4844/signed_blinded_beacon_block.json b/examples/eip4844/signed_blinded_beacon_block.json
new file mode 100644
index 0000000..fc70c79
--- /dev/null
+++ b/examples/eip4844/signed_blinded_beacon_block.json
@@ -0,0 +1,162 @@
+{
+  "value": {
+    "message": {
+      "slot": "1",
+      "proposer_index": "1",
+      "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+      "body": {
+        "randao_reveal": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+        "eth1_data": {
+          "deposit_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "deposit_count": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "graffiti": "0xdeadbeefc0ffee",
+        "proposer_slashings": [
+          {
+            "signed_header_1": {
+              "message": {
+                "slot": "1",
+                "proposer_index": "1",
+                "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            },
+            "signed_header_2": {
+              "message": {
+                "slot": "1",
+                "proposer_index": "1",
+                "parent_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "body_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          }
+        ],
+        "attester_slashings": [
+          {
+            "attestation_1": {
+              "attesting_indices": [
+                "1"
+              ],
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+              "data": {
+                "slot": "1",
+                "index": "1",
+                "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "source": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "target": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                }
+              }
+            },
+            "attestation_2": {
+              "attesting_indices": [
+                "1"
+              ],
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+              "data": {
+                "slot": "1",
+                "index": "1",
+                "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+                "source": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                },
+                "target": {
+                  "epoch": "1",
+                  "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+                }
+              }
+            }
+          }
+        ],
+        "attestations": [
+          {
+            "aggregation_bits": "0x01",
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505",
+            "data": {
+              "slot": "1",
+              "index": "1",
+              "beacon_block_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+              "source": {
+                "epoch": "1",
+                "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              },
+              "target": {
+                "epoch": "1",
+                "root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+              }
+            }
+          }
+        ],
+        "deposits": [
+          {
+            "proof": [
+              "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+            ],
+            "data": {
+              "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+              "withdrawal_credentials": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+              "amount": "1",
+              "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+            }
+          }
+        ],
+        "voluntary_exits": [
+          {
+            "message": {
+              "epoch": "1",
+              "validator_index": "1"
+            },
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+          }
+        ],
+        "sync_aggregate": {
+          "sync_committee_bits": "0x01",
+          "sync_committee_signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+        },
+        "execution_payload_header": {
+          "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+          "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+          "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "block_number": "1",
+          "gas_limit": "1",
+          "gas_used": "1",
+          "timestamp": "1",
+          "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "base_fee_per_gas": "1",
+          "excess_data_gas": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "bls_to_execution_changes": [
+          {
+            "message": {
+              "validator_index": "1",
+              "from_bls_pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+              "to_execution_address": "0xabcf8e0d4e9587369b2301d0790347320302cc09"
+            },
+            "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+          }
+        ],
+        "blob_kzg_commitments": [
+          "0xa94170080872584e54a1cf092d845703b13907f2e6b3b1c0ad573b910530499e3bcd48c6378846b80d2bfa58c81cf3d5"
+        ]
+      }
+    },
+    "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+  }
+}
diff --git a/examples/eip4844/signed_builder_bid.json b/examples/eip4844/signed_builder_bid.json
new file mode 100644
index 0000000..bcb6510
--- /dev/null
+++ b/examples/eip4844/signed_builder_bid.json
@@ -0,0 +1,33 @@
+{
+  "value": {
+    "version": "eip4844",
+    "data": {
+      "message": {
+        "header": {
+          "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+          "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+          "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "block_number": "1",
+          "gas_limit": "1",
+          "gas_used": "1",
+          "timestamp": "1",
+          "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "base_fee_per_gas": "1",
+          "excess_data_gas": "1",
+          "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+          "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
+        },
+        "value": "1",
+        "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a",
+        "blob_kzg_commitments": [
+    "0xa94170080872584e54a1cf092d845703b13907f2e6b3b1c0ad573b910530499e3bcd48c6378846b80d2bfa58c81cf3d5"
+        ]
+      },
+      "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+    }
+  }
+}
diff --git a/specs/builder.md b/specs/builder.md
index 17c3337..91d7bf3 100644
--- a/specs/builder.md
+++ b/specs/builder.md
@@ -18,6 +18,11 @@
       - [`BlindedBeaconBlockBody`](#blindedbeaconblockbody)
       - [`BlindedBeaconBlock`](#blindedbeaconblock)
       - [`SignedBlindedBeaconBlock`](#signedblindedbeaconblock)
+    - [Capella](#capella)
+      - [`BlindedBeaconBlockBody`](#blindedbeaconblockbody-1)
+    - [EIP-4844](#eip-4844)
+      - [`BuilderBid`](#builderbid-2)
+      - [`BlindedBeaconBlockBody`](#blindedbeaconblockbody-2)
   - [Signing](#signing)
 - [Endpoints](#endpoints)
 
@@ -121,6 +126,55 @@ class SignedBlindedBeaconBlock(Container):
     signature: BLSSignature
 ```
 
+#### Capella
+
+##### `BlindedBeaconBlockBody`
+
+```python
+class BlindedBeaconBlockBody(Container):
+    randao_reveal: BLSSignature
+    eth1_data: Eth1Data
+    graffiti: Bytes32
+    proposer_slashings: List[ProposerSlashing, MAX_PROPOSER_SLASHINGS]
+    attester_slashings: List[AttesterSlashing, MAX_ATTESTER_SLASHINGS]
+    attestations: List[Attestation, MAX_ATTESTATIONS]
+    deposits: List[Deposit, MAX_DEPOSITS]
+    voluntary_exits: List[SignedVoluntaryExit, MAX_VOLUNTARY_EXITS]
+    sync_aggregate: SyncAggregate
+    execution_payload_header: ExecutionPayloadHeader
+    bls_to_execution_changes: List[SignedBLSToExecutionChange, MAX_BLS_TO_EXECUTION_CHANGES]  # [New in Capella]
+```
+
+#### EIP-4844
+
+##### `BuilderBid`
+
+```python
+class BuilderBid(Container):
+    header: ExecutionPayloadHeader # [Modified in EIP-4844]
+    value: uint256
+    pubkey: BLSPubkey
+    blob_kzg_commitments: List[KZGCommitment, MAX_BLOBS_PER_BLOCK]  # [New in EIP-4844]
+```
+
+##### `BlindedBeaconBlockBody`
+
+```python
+class BlindedBeaconBlockBody(Container):
+    randao_reveal: BLSSignature
+    eth1_data: Eth1Data
+    graffiti: Bytes32
+    proposer_slashings: List[ProposerSlashing, MAX_PROPOSER_SLASHINGS]
+    attester_slashings: List[AttesterSlashing, MAX_ATTESTER_SLASHINGS]
+    attestations: List[Attestation, MAX_ATTESTATIONS]
+    deposits: List[Deposit, MAX_DEPOSITS]
+    voluntary_exits: List[SignedVoluntaryExit, MAX_VOLUNTARY_EXITS]
+    sync_aggregate: SyncAggregate
+    execution_payload_header: ExecutionPayloadHeader  # [Modified in EIP-4844]
+    bls_to_execution_changes: List[SignedBLSToExecutionChange, MAX_BLS_TO_EXECUTION_CHANGES]
+    blob_kzg_commitments: List[KZGCommitment, MAX_BLOBS_PER_BLOCK]  # [New in EIP-4844]
+```
+
 ### Signing
 
 All signature operations should follow the [standard BLS operations][bls]
diff --git a/spellcheck.yaml b/spellcheck.yaml
index 8a75080..285c1e6 100644
--- a/spellcheck.yaml
+++ b/spellcheck.yaml
@@ -26,6 +26,7 @@ matrix:
     aspell:
       lang: en
       d: en_US
+      ignore-case: true
       run-together: true
       run-together-min: 2
       run-together-limit: 256
diff --git a/types/bellatrix/bid.yaml b/types/bellatrix/bid.yaml
index 3e9e7fb..c7f9fe7 100644
--- a/types/bellatrix/bid.yaml
+++ b/types/bellatrix/bid.yaml
@@ -1,11 +1,7 @@
 Bellatrix:
-  BuilderBid:
+  BuilderBidCommon:
     type: object
-    description: "The `BuilderBid` object from the Builder API spec."
     properties:
-      header:
-        $ref: "../../beacon-apis/types/bellatrix/execution_payload.yaml#/Bellatrix/ExecutionPayloadHeader"
-        description: "`ExecutionPayloadHeader` to use in block proposal."
       value:
         $ref: "../../beacon-apis/types/primitive.yaml#/Uint256"
         description: "Payment in wei that will be paid to the `fee_recipient` account."
@@ -13,6 +9,16 @@ Bellatrix:
         $ref: "../../beacon-apis/types/primitive.yaml#/Pubkey"
         description: "BLS public key of builder."
 
+  BuilderBid:
+    description: "The `BuilderBid` object from the Builder API Bellatrix spec."
+    allOf:
+      - $ref: '#/Bellatrix/BuilderBidCommon'
+      - type: object
+        properties:
+          header:
+            $ref: "../../beacon-apis/types/bellatrix/execution_payload.yaml#/Bellatrix/ExecutionPayloadHeader"
+            description: "`ExecutionPayloadHeader` to use in block proposal."
+
   SignedBuilderBid:
     type: object
     description: "The `SignedBuilderBid` object from the Builder API spec."
diff --git a/types/capella/bid.yaml b/types/capella/bid.yaml
new file mode 100644
index 0000000..a4ed466
--- /dev/null
+++ b/types/capella/bid.yaml
@@ -0,0 +1,19 @@
+Capella:
+  BuilderBid:
+    description: "The `BuilderBid` object from the Builder API Capella spec."
+    allOf:
+      - $ref: '../bellatrix/bid.yaml#/Bellatrix/BuilderBidCommon'
+      - type: object
+        properties:
+          header:
+            $ref: "../../beacon-apis/types/capella/execution_payload.yaml#/Capella/ExecutionPayloadHeader"
+            description: "`ExecutionPayloadHeader` to use in block proposal."
+
+  SignedBuilderBid:
+    type: object
+    description: "The `SignedBuilderBid` object from the Builder API spec."
+    properties:
+      message:
+        $ref: "#/Capella/BuilderBid"
+      signature:
+        $ref: "../../beacon-apis/types/primitive.yaml#/Signature"
diff --git a/types/eip4844/bid.yaml b/types/eip4844/bid.yaml
new file mode 100644
index 0000000..79b70c6
--- /dev/null
+++ b/types/eip4844/bid.yaml
@@ -0,0 +1,23 @@
+EIP4844:
+  BuilderBid:
+    description: "The `BuilderBid` object from the Builder API EIP-4844 spec."
+    allOf:
+      - $ref: '../bellatrix/bid.yaml#/Bellatrix/BuilderBidCommon'
+      - type: object
+        properties:
+          header:
+            $ref: "../../beacon-apis/types/eip4844/execution_payload.yaml#/EIP4844/ExecutionPayloadHeader"
+            description: "`ExecutionPayloadHeader` to use in block proposal."
+          blob_kzg_commitments:
+            type: array
+            items:
+              $ref: "../../beacon-apis/types/primitive.yaml#/KZGCommitment"
+
+  SignedBuilderBid:
+    type: object
+    description: "The `SignedBuilderBid` object from the Builder API spec."
+    properties:
+      message:
+        $ref: "#/EIP4844/BuilderBid"
+      signature:
+        $ref: "../../beacon-apis/types/primitive.yaml#/Signature"
diff --git a/types/eip4844/execution_payload_and_blobs_sidecar.yaml b/types/eip4844/execution_payload_and_blobs_sidecar.yaml
new file mode 100644
index 0000000..5fbf9b4
--- /dev/null
+++ b/types/eip4844/execution_payload_and_blobs_sidecar.yaml
@@ -0,0 +1,9 @@
+EIP4844:
+  ExecutionPayloadAndBlobsSidecar:
+    type: object
+    description: "A wrapper object containing the ExecutionPayload and the BlobsSidecar"
+    properties:
+      execution_payload:
+        $ref: '../../beacon-apis/types/eip4844/execution_payload.yaml#/EIP4844/ExecutionPayload'
+      blobs_sidecar:
+        $ref: "../../beacon-apis/types/eip4844/block_and_blobs_sidecar.yaml#/EIP4844/BlobsSidecar"
diff --git a/wordlist.txt b/wordlist.txt
index 3d41c38..3db5003 100644
--- a/wordlist.txt
+++ b/wordlist.txt
@@ -2,12 +2,14 @@ apis
 bellatrix
 bls
 bn
+capella
 cli
 dev
 eth
 http
 https
 json
+kzg
 mev
 nodejs
 npm