diff --git a/beacon_node/beacon_chain/src/beacon_chain.rs b/beacon_node/beacon_chain/src/beacon_chain.rs
index 8be199d719..0c37e70021 100644
--- a/beacon_node/beacon_chain/src/beacon_chain.rs
+++ b/beacon_node/beacon_chain/src/beacon_chain.rs
@@ -8,7 +8,7 @@ use crate::beacon_proposer_cache::compute_proposer_duties_from_head;
 use crate::beacon_proposer_cache::BeaconProposerCache;
 use crate::blob_cache::BlobCache;
 use crate::blob_verification::{
-    AsBlock, AvailabilityPendingBlock, AvailableBlock, BlobError, Blobs, BlockWrapper,
+    AsBlock, AvailableBlock, BlobError, Blobs, BlockWrapper,
     IntoAvailableBlock,
 };
 use crate::block_times_cache::BlockTimesCache;
@@ -442,8 +442,7 @@ pub struct BeaconChain<T: BeaconChainTypes> {
     /// Provides monitoring of a set of explicitly defined validators.
     pub validator_monitor: RwLock<ValidatorMonitor<T::EthSpec>>,
     pub blob_cache: BlobCache<T::EthSpec>,
-    pub blob_cache: BlobCache<T::EthSpec>,
-    pub kzg: Option<Arc<kzg::Kzg>>,
+    pub kzg: Option<Arc<Kzg>>,
 }
 
 type BeaconBlockAndState<T, Payload> = (BeaconBlock<T, Payload>, BeaconState<T>);
@@ -1084,34 +1083,8 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     pub fn get_blobs(
         &self,
         block_root: &Hash256,
-        data_availability_boundary: Epoch,
-    ) -> Result<Option<BlobsSidecar<T::EthSpec>>, Error> {
-        match self.store.get_blobs(block_root)? {
-            Some(blobs) => Ok(Some(blobs)),
-            None => {
-                // Check for the corresponding block to understand whether we *should* have blobs.
-                self.get_blinded_block(block_root)?
-                    .map(|block| {
-                        // If there are no KZG commitments in the block, we know the sidecar should
-                        // be empty.
-                        let expected_kzg_commitments =
-                            match block.message().body().blob_kzg_commitments() {
-                                Ok(kzg_commitments) => kzg_commitments,
-                                Err(_) => return Err(Error::NoKzgCommitmentsFieldOnBlock),
-                            };
-                        if expected_kzg_commitments.is_empty() {
-                            Ok(BlobsSidecar::empty_from_parts(*block_root, block.slot()))
-                        } else if data_availability_boundary <= block.epoch() {
-                            // We should have blobs for all blocks younger than the boundary.
-                            Err(Error::BlobsUnavailable)
-                        } else {
-                            // We shouldn't have blobs for blocks older than the boundary.
-                            Err(Error::BlobsOlderThanDataAvailabilityBoundary(block.epoch()))
-                        }
-                    })
-                    .transpose()
-            }
-        }
+    ) -> Result<Option<BlobSidecarList<T::EthSpec>>, Error> {
+        self.store.get_blobs(block_root)
     }
 
     pub fn get_blinded_block(
diff --git a/beacon_node/beacon_chain/src/blob_verification.rs b/beacon_node/beacon_chain/src/blob_verification.rs
index 50c58391e9..04b5c1a4bb 100644
--- a/beacon_node/beacon_chain/src/blob_verification.rs
+++ b/beacon_node/beacon_chain/src/blob_verification.rs
@@ -12,8 +12,8 @@ use crate::BeaconChainError;
 use state_processing::per_block_processing::eip4844::eip4844::verify_kzg_commitments_against_transactions;
 use types::blob_sidecar::BlobSidecar;
 use types::{
-    BeaconBlockRef, BeaconStateError, BlobsSidecar, EthSpec, Hash256, KzgCommitment,
-    SignedBeaconBlock, SignedBeaconBlockAndBlobsSidecar, SignedBeaconBlockHeader,
+    BeaconBlockRef, BeaconStateError, EthSpec, Hash256, KzgCommitment,
+    SignedBeaconBlock, SignedBeaconBlockHeader,
     SignedBlobSidecar, Slot, Transactions,
 };
 use types::{Epoch, ExecPayload};
@@ -289,23 +289,6 @@ pub enum DataAvailabilityCheckRequired {
     No,
 }
 
-impl<T: BeaconChainTypes> BlockWrapper<T::EthSpec> {
-    fn into_availablilty_pending_block(
-        self,
-        block_root: Hash256,
-        chain: &BeaconChain<T>,
-    ) -> Result<AvailabilityPendingBlock<T::EthSpec>, BlobError> {
-        match self {
-            BlockWrapper::Block(block) => {
-                AvailabilityPendingBlock::new(block, block_root, da_check_required)
-            }
-            BlockWrapper::BlockAndBlobs(block, blobs_sidecar) => {
-                AvailabilityPendingBlock::new_with_blobs(block, blobs_sidecar, da_check_required)
-            }
-        }
-    }
-}
-
 pub trait IntoAvailableBlock<T: BeaconChainTypes> {
     fn into_available_block(
         self,
@@ -314,39 +297,32 @@ pub trait IntoAvailableBlock<T: BeaconChainTypes> {
     ) -> Result<AvailableBlock<T::EthSpec>, BlobError>;
 }
 
-/// A wrapper over a [`SignedBeaconBlock`] or a [`SignedBeaconBlockAndBlobsSidecar`].  An
-/// `AvailableBlock` has passed any required data availability checks and should be used in
-/// consensus.
-#[derive(Clone, Debug, Derivative)]
-#[derivative(PartialEq, Hash(bound = "T: BeaconChainTypes"))]
-pub struct AvailabilityPendingBlock<T: BeaconChainTypes> {
-    block: Arc<SignedBeaconBlock<T::EthSpec>>,
-    data_availability_handle: DataAvailabilityHandle<T::EthSpec>,
+impl <T: BeaconChainTypes> IntoAvailableBlock<T> for BlockWrapper<T::EthSpec> {
+    fn into_available_block(self, block_root: Hash256, chain: &BeaconChain<T>) -> Result<AvailableBlock<T::EthSpec>, BlobError> {
+        todo!()
+    }
 }
 
-/// Used to await the result of data availability check.
-type DataAvailabilityHandle<E> = JoinHandle<Result<Option<Blobs<E>>, BlobError>>;
-
 #[derive(Clone, Debug, Derivative)]
 #[derivative(PartialEq, Hash(bound = "T: BeaconChainTypes"))]
-pub struct AvailableBlock<T: BeaconChainTypes> {
-    block: Arc<SignedBeaconBlock<T::EthSpec>>,
-    blobs: Blobs<T::EthSpec>,
+pub struct AvailableBlock<T: EthSpec> {
+    block: Arc<SignedBeaconBlock<T>>,
+    blobs: Blobs<T>,
 }
 
-impl<T: BeaconChainTypes> AvailableBlock<T> {
+impl<T: EthSpec> AvailableBlock<T> {
     pub fn blobs(&self) -> Option<Arc<BlobsSidecar<T>>> {
         match &self.blobs {
             Blobs::NotRequired | Blobs::None => None,
-            Blobs::Available(block_sidecar) => Some(block_sidecar.clone()),
+            Blobs::Available(blob_sidecar) => Some(blob_sidecar.clone()),
         }
     }
 
     pub fn deconstruct(
         self,
     ) -> (
-        Arc<SignedBeaconBlock<T::EthSpec>>,
-        Option<Arc<BlobsSidecar<T::EthSpec>>>,
+        Arc<SignedBeaconBlock<T>>,
+        Option<Arc<BlobsSidecar<T>>>,
     ) {
         match self.blobs {
             Blobs::NotRequired | Blobs::None => (self.block, None),
@@ -365,119 +341,6 @@ pub enum Blobs<E: EthSpec> {
     None,
 }
 
-//TODO(sean) add block root to the availability pending block?
-impl<T: BeaconChainTypes> AvailabilityPendingBlock<T> {
-    pub fn new(
-        beacon_block: Arc<SignedBeaconBlock<T::EthSpec>>,
-        block_root: Hash256,
-        chain: &BeaconChain<T>,
-    ) -> Result<Self, BlobError> {
-        let data_availability_boundary = chain.data_availability_boundary();
-        let da_check_required =
-            data_availability_boundary.map_or(DataAvailabilityCheckRequired::No, |boundary| {
-                if chain.epoch()? >= boundary {
-                    DataAvailabilityCheckRequired::Yes
-                } else {
-                    DataAvailabilityCheckRequired::No
-                }
-            });
-
-        match beacon_block.as_ref() {
-            // No data availability check required prior to Eip4844.
-            SignedBeaconBlock::Base(_)
-            | SignedBeaconBlock::Altair(_)
-            | SignedBeaconBlock::Capella(_)
-            | SignedBeaconBlock::Merge(_) => Ok(AvailabilityPendingBlock {
-                block: beacon_block,
-                data_availability_handle: async { Ok(Some(Blobs::NotRequired)) },
-            }),
-            SignedBeaconBlock::Eip4844(_) => {
-                match da_check_required {
-                    DataAvailabilityCheckRequired::Yes => {
-                        // Attempt to reconstruct empty blobs here.
-                        let blobs_sidecar = beacon_block
-                            .reconstruct_empty_blobs(Some(block_root))
-                            .map(Arc::new)?;
-                        Ok(AvailableBlock(AvailableBlockInner::BlockAndBlob(
-                            SignedBeaconBlockAndBlobsSidecar {
-                                beacon_block,
-                                blobs_sidecar,
-                            },
-                        )))
-                    }
-                    DataAvailabilityCheckRequired::No => AvailabilityPendingBlock {
-                        block: beacon_block,
-                        data_availability_handle: async { Ok(Some(Blobs::NotRequired)) },
-                    },
-                }
-            }
-        }
-    }
-
-    /// This function is private because an `AvailableBlock` should be
-    /// constructed via the `into_available_block` method.
-    //TODO(sean) do we want this to optionally cricumvent the beacon cache?
-    fn new_with_blobs(
-        beacon_block: Arc<SignedBeaconBlock<T::EthSpec>>,
-        blobs_sidecar: Arc<BlobsSidecar<T::EthSpec>>,
-        chain: &BeaconChain<T>,
-    ) -> Result<Self, BlobError> {
-        let data_availability_boundary = chain.data_availability_boundary();
-        let da_check_required =
-            data_availability_boundary.map_or(DataAvailabilityCheckRequired::No, |boundary| {
-                if chain.epoch()? >= boundary {
-                    DataAvailabilityCheckRequired::Yes
-                } else {
-                    DataAvailabilityCheckRequired::No
-                }
-            });
-        match beacon_block.as_ref() {
-            // This method shouldn't be called with a pre-Eip4844 block.
-            SignedBeaconBlock::Base(_)
-            | SignedBeaconBlock::Altair(_)
-            | SignedBeaconBlock::Capella(_)
-            | SignedBeaconBlock::Merge(_) => Err(BlobError::InconsistentFork),
-            SignedBeaconBlock::Eip4844(_) => {
-                match da_check_required {
-                    DataAvailabilityCheckRequired::Yes => Ok(AvailableBlock {
-                        block: beacon_block,
-                        blobs: Blobs::Available(blobs_sidecar),
-                    }),
-                    DataAvailabilityCheckRequired::No => {
-                        // Blobs were not verified so we drop them, we'll instead just pass around
-                        // an available `Eip4844` block without blobs.
-                        Ok(AvailableBlock {
-                            block: beacon_block,
-                            blobs: Blobs::NotRequired,
-                        })
-                    }
-                }
-            }
-        }
-    }
-}
-
-pub trait IntoBlockWrapper<E: EthSpec>: AsBlock<E> {
-    fn into_block_wrapper(self) -> BlockWrapper<E>;
-}
-
-impl<E: EthSpec> IntoBlockWrapper<E> for BlockWrapper<E> {
-    fn into_block_wrapper(self) -> BlockWrapper<E> {
-        self
-    }
-}
-
-impl<E: EthSpec> IntoBlockWrapper<E> for AvailabilityPendingBlock<E> {
-    fn into_block_wrapper(self) -> BlockWrapper<E> {
-        let (block, blobs) = self.deconstruct();
-        if let Some(blobs) = blobs {
-            BlockWrapper::BlockAndBlobs(block, blobs)
-        } else {
-            BlockWrapper::Block(block)
-        }
-    }
-}
-
 pub trait AsBlock<E: EthSpec> {
     fn slot(&self) -> Slot;
     fn epoch(&self) -> Epoch;
@@ -542,7 +405,7 @@ impl<E: EthSpec> AsBlock<E> for BlockWrapper<E> {
     fn canonical_root(&self) -> Hash256 {
         match &self {
             BlockWrapper::Block(block) => block.canonical_root(),
-            BlockWrapper::BlockAndBlob(block, _) => block.canonical_root(),
+            BlockWrapper::BlockAndBlobs(block, _) => block.canonical_root(),
         }
     }
 }
@@ -599,82 +462,42 @@ impl<E: EthSpec> AsBlock<E> for &BlockWrapper<E> {
     fn canonical_root(&self) -> Hash256 {
         match &self {
             BlockWrapper::Block(block) => block.canonical_root(),
-            BlockWrapper::BlockAndBlob(block, _) => block.canonical_root(),
+            BlockWrapper::BlockAndBlobs(block, _) => block.canonical_root(),
         }
     }
 }
 
-impl<E: EthSpec> AsBlock<E> for AvailabilityPendingBlock<E> {
-    fn slot(&self) -> Slot {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.slot(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.slot()
-            }
-        }
-    }
-    fn epoch(&self) -> Epoch {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.epoch(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.epoch()
-            }
-        }
-    }
-    fn parent_root(&self) -> Hash256 {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.parent_root(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.parent_root()
-            }
-        }
-    }
-    fn state_root(&self) -> Hash256 {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.state_root(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.state_root()
-            }
-        }
-    }
-    fn signed_block_header(&self) -> SignedBeaconBlockHeader {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.signed_block_header(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.signed_block_header()
-            }
-        }
-    }
-    fn message(&self) -> BeaconBlockRef<E> {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.message(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.message()
-            }
-        }
-    }
-    fn as_block(&self) -> &SignedBeaconBlock<E> {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block,
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                &block_sidecar_pair.beacon_block
-            }
-        }
-    }
-    fn block_cloned(&self) -> Arc<SignedBeaconBlock<E>> {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.clone(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.clone()
-            }
-        }
-    }
-    fn canonical_root(&self) -> Hash256 {
-        match &self.0 {
-            AvailableBlockInner::Block(block) => block.canonical_root(),
-            AvailableBlockInner::BlockAndBlob(block_sidecar_pair) => {
-                block_sidecar_pair.beacon_block.canonical_root()
-            }
+/// A wrapper over a [`SignedBeaconBlock`] or a [`SignedBeaconBlockAndBlobsSidecar`]. This makes no
+/// claims about data availability and should not be used in consensus. This struct is useful in
+/// networking when we want to send blocks around without consensus checks.
+#[derive(Clone, Debug, Derivative)]
+#[derivative(PartialEq, Hash(bound = "E: EthSpec"))]
+pub enum BlockWrapper<E: EthSpec> {
+    Block(Arc<SignedBeaconBlock<E>>),
+    BlockAndBlobs(Arc<SignedBeaconBlock<E>>, Arc<BlobsSidecar<E>>),
+}
+
+impl<E: EthSpec> BlockWrapper<E> {
+    pub fn new(
+        block: Arc<SignedBeaconBlock<E>>,
+        blobs_sidecar: Option<Arc<BlobsSidecar<E>>>,
+    ) -> Self {
+        if let Some(blobs_sidecar) = blobs_sidecar {
+            BlockWrapper::BlockAndBlobs(block, blobs_sidecar)
+        } else {
+            BlockWrapper::Block(block)
         }
     }
 }
+
+impl<E: EthSpec> From<SignedBeaconBlock<E>> for BlockWrapper<E> {
+    fn from(block: SignedBeaconBlock<E>) -> Self {
+        BlockWrapper::Block(Arc::new(block))
+    }
+}
+
+impl<E: EthSpec> From<Arc<SignedBeaconBlock<E>>> for BlockWrapper<E> {
+    fn from(block: Arc<SignedBeaconBlock<E>>) -> Self {
+        BlockWrapper::Block(block)
+    }
+}
diff --git a/beacon_node/beacon_chain/src/block_verification.rs b/beacon_node/beacon_chain/src/block_verification.rs
index 1e420f8a4b..00603727ad 100644
--- a/beacon_node/beacon_chain/src/block_verification.rs
+++ b/beacon_node/beacon_chain/src/block_verification.rs
@@ -49,7 +49,7 @@
 #![allow(clippy::result_large_err)]
 
 use crate::blob_verification::{
-    validate_blob_for_gossip, AsBlock, AvailabilityPendingBlock, AvailableBlock, BlobError,
+    AsBlock, AvailableBlock, BlobError,
     BlockWrapper, IntoAvailableBlock, IntoBlockWrapper,
 };
 use crate::eth1_finalization_cache::Eth1FinalizationData;
@@ -627,7 +627,7 @@ pub fn signature_verify_chain_segment<T: BeaconChainTypes>(
 #[derive(Derivative)]
 #[derivative(Debug(bound = "T: BeaconChainTypes"))]
 pub struct GossipVerifiedBlock<T: BeaconChainTypes> {
-    pub block: AvailabilityPendingBlock<T>,
+    pub block: Arc<SignedBeaconBlock<T::EthSpec>>,
     pub block_root: Hash256,
     parent: Option<PreProcessingSnapshot<T::EthSpec>>,
     consensus_context: ConsensusContext<T::EthSpec>,
@@ -636,7 +636,7 @@ pub struct GossipVerifiedBlock<T: BeaconChainTypes> {
 /// A wrapper around a `SignedBeaconBlock` that indicates that all signatures (except the deposit
 /// signatures) have been verified.
 pub struct SignatureVerifiedBlock<T: BeaconChainTypes> {
-    block: AvailabilityPendingBlock<T::EthSpec>,
+    block: Arc<SignedBeaconBlock<T::EthSpec>>,
     block_root: Hash256,
     parent: Option<PreProcessingSnapshot<T::EthSpec>>,
     consensus_context: ConsensusContext<T::EthSpec>,
@@ -689,7 +689,7 @@ pub trait IntoExecutionPendingBlock<T: BeaconChainTypes>: Sized {
         block_root: Hash256,
         chain: &Arc<BeaconChain<T>>,
         notify_execution_layer: NotifyExecutionLayer,
-    ) -> Result<ExecutionPendingBlock<T, B>, BlockError<T::EthSpec>> {
+    ) -> Result<ExecutionPendingBlock<T>, BlockError<T::EthSpec>> {
         self.into_execution_pending_block_slashable(block_root, chain, notify_execution_layer)
             .map(|execution_pending| {
                 // Supply valid block to slasher.
@@ -707,7 +707,7 @@ pub trait IntoExecutionPendingBlock<T: BeaconChainTypes>: Sized {
         block_root: Hash256,
         chain: &Arc<BeaconChain<T>>,
         notify_execution_layer: NotifyExecutionLayer,
-    ) -> Result<ExecutionPendingBlock<T, B>, BlockSlashInfo<BlockError<T::EthSpec>>>;
+    ) -> Result<ExecutionPendingBlock<T>, BlockSlashInfo<BlockError<T::EthSpec>>>;
 
     fn block(&self) -> &SignedBeaconBlock<T::EthSpec>;
 }
@@ -930,8 +930,6 @@ impl<T: BeaconChainTypes> GossipVerifiedBlock<T> {
         // Validate the block's execution_payload (if any).
         validate_execution_payload_for_gossip(&parent_block, block.message(), chain)?;
 
-        let available_block = validate_blob_for_gossip(block, block_root, chain)?;
-
         // Having checked the proposer index and the block root we can cache them.
         let consensus_context = ConsensusContext::new(available_block.slot())
             .set_current_block_root(block_root)
@@ -969,7 +967,7 @@ impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for GossipVerifiedBlock<T
     }
 
     fn block(&self) -> &SignedBeaconBlock<T::EthSpec> {
-        self.block.as_block()
+        self.block.as_ref()
     }
 }
 
@@ -979,7 +977,7 @@ impl<T: BeaconChainTypes> SignatureVerifiedBlock<T> {
     ///
     /// Returns an error if the block is invalid, or if the block was unable to be verified.
     pub fn new(
-        block: AvailabilityPendingBlock<T::EthSpec>,
+        block: Arc<SignedBeaconBlock<T::EthSpec>>,
         block_root: Hash256,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockError<T::EthSpec>> {
@@ -1029,7 +1027,7 @@ impl<T: BeaconChainTypes> SignatureVerifiedBlock<T> {
 
     /// As for `new` above but producing `BlockSlashInfo`.
     pub fn check_slashable(
-        block: AvailabilityPendingBlock<T::EthSpec>,
+        block: Arc<SignedBeaconBlock<T::EthSpec>>,
         block_root: Hash256,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockSlashInfo<BlockError<T::EthSpec>>> {
@@ -1121,7 +1119,7 @@ impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for SignatureVerifiedBloc
     }
 
     fn block(&self) -> &SignedBeaconBlock<T::EthSpec> {
-        self.block.as_block()
+        self.block.as_ref()
     }
 }
 
@@ -1152,28 +1150,6 @@ impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for Arc<SignedBeaconBlock
     }
 }
 
-impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for AvailabilityPendingBlock<T::EthSpec> {
-    /// Verifies the `SignedBeaconBlock` by first transforming it into a `SignatureVerifiedBlock`
-    /// and then using that implementation of `IntoExecutionPendingBlock` to complete verification.
-    fn into_execution_pending_block_slashable(
-        self,
-        block_root: Hash256,
-        chain: &Arc<BeaconChain<T>>,
-        notify_execution_layer: NotifyExecutionLayer,
-    ) -> Result<ExecutionPendingBlock<T>, BlockSlashInfo<BlockError<T::EthSpec>>> {
-        // Perform an early check to prevent wasting time on irrelevant blocks.
-        let block_root = check_block_relevancy(self.as_block(), block_root, chain)
-            .map_err(|e| BlockSlashInfo::SignatureNotChecked(self.signed_block_header(), e))?;
-
-        SignatureVerifiedBlock::check_slashable(self, block_root, chain)?
-            .into_execution_pending_block_slashable(block_root, chain, notify_execution_layer)
-    }
-
-    fn block(&self) -> &SignedBeaconBlock<T::EthSpec> {
-        self.as_block()
-    }
-}
-
 impl<T: BeaconChainTypes> ExecutionPendingBlock<T> {
     /// Instantiates `Self`, a wrapper that indicates that the given `block` is fully valid. See
     /// the struct-level documentation for more information.
@@ -1183,7 +1159,7 @@ impl<T: BeaconChainTypes> ExecutionPendingBlock<T> {
     ///
     /// Returns an error if the block is invalid, or if the block was unable to be verified.
     pub fn from_signature_verified_components(
-        block: AvailabilityPendingBlock<T::EthSpec>,
+        block: Arc<SignedBeaconBlock<T::EthSpec>>,
         block_root: Hash256,
         parent: PreProcessingSnapshot<T::EthSpec>,
         mut consensus_context: ConsensusContext<T::EthSpec>,
diff --git a/beacon_node/beacon_chain/src/early_attester_cache.rs b/beacon_node/beacon_chain/src/early_attester_cache.rs
index 2df1a4f05b..a0785f98e8 100644
--- a/beacon_node/beacon_chain/src/early_attester_cache.rs
+++ b/beacon_node/beacon_chain/src/early_attester_cache.rs
@@ -1,4 +1,4 @@
-use crate::blob_verification::{AvailabilityPendingBlock, AvailableBlock};
+use crate::blob_verification::{AvailableBlock};
 use crate::{
     attester_cache::{CommitteeLengths, Error},
     metrics,
@@ -21,7 +21,7 @@ pub struct CacheItem<E: EthSpec> {
      * Values used to make the block available.
      */
     block: Arc<SignedBeaconBlock<E>>,
-    blobs: Option<Arc<BlobsSidecar<E>>>,
+    blobs: Option<Arc<BlobSidecarList<E>>>,
     proto_block: ProtoBlock,
 }
 
@@ -160,7 +160,7 @@ impl<E: EthSpec> EarlyAttesterCache<E> {
     }
 
     /// Returns the blobs, if `block_root` matches the cached item.
-    pub fn get_blobs(&self, block_root: Hash256) -> Option<Arc<BlobsSidecar<E>>> {
+    pub fn get_blobs(&self, block_root: Hash256) -> Option<Arc<BlobSidecarList<E>>> {
         self.item
             .read()
             .as_ref()
diff --git a/beacon_node/beacon_chain/src/gossip_blob_cache.rs b/beacon_node/beacon_chain/src/gossip_blob_cache.rs
index fa615a9c2a..a932fc2022 100644
--- a/beacon_node/beacon_chain/src/gossip_blob_cache.rs
+++ b/beacon_node/beacon_chain/src/gossip_blob_cache.rs
@@ -1,7 +1,7 @@
-use crate::blob_verification::{verify_data_availability, AvailabilityPendingBlock};
+use crate::blob_verification::{verify_data_availability};
 use crate::block_verification::{ExecutedBlock, IntoExecutionPendingBlock};
 use crate::kzg_utils::validate_blob;
-use crate::{BeaconChainError, BlockError};
+use crate::{BeaconChainError, BeaconChainTypes, BlockError};
 use eth2::reqwest::header::Entry;
 use kzg::{Kzg, KzgCommitment};
 use parking_lot::{Mutex, RwLock};
@@ -11,27 +11,29 @@ use std::future::Future;
 use std::sync::Arc;
 use types::blob_sidecar::{BlobIdentifier, BlobSidecar};
 use types::{EthSpec, Hash256};
+use kzg::Error as KzgError;
 
 pub enum BlobCacheError {
     DuplicateBlob(Hash256),
+    Kzg(KzgError),
 }
 /// This cache contains
 ///  - blobs that have been gossip verified
 ///  - commitments for blocks that have been gossip verified, but the commitments themselves
 ///    have not been verified against blobs
 ///  - blocks that have been fully verified and only require a data availability check
-pub struct GossipBlobCache<T: EthSpec> {
-    rpc_blob_cache: RwLock<HashMap<BlobIdentifier, Arc<BlobSidecar<T>>>>,
+pub struct GossipBlobCache<T: BeaconChainTypes> {
+    rpc_blob_cache: RwLock<HashMap<BlobIdentifier, Arc<BlobSidecar<T::EthSpec>>>>,
     gossip_blob_cache: Mutex<HashMap<Hash256, GossipBlobCacheInner<T>>>,
     kzg: Kzg,
 }
 
-struct GossipBlobCacheInner<T: EthSpec> {
-    verified_blobs: Vec<Arc<BlobSidecar<T>>>,
+struct GossipBlobCacheInner<T: BeaconChainTypes> {
+    verified_blobs: Vec<Arc<BlobSidecar<T::EthSpec>>>,
     executed_block: Option<ExecutedBlock<T>>,
 }
 
-impl<T: EthSpec> GossipBlobCache<T> {
+impl<T: BeaconChainTypes> GossipBlobCache<T> {
     pub fn new(kzg: Kzg) -> Self {
         Self {
             rpc_blob_cache: RwLock::new(HashMap::new()),
@@ -45,14 +47,14 @@ impl<T: EthSpec> GossipBlobCache<T> {
     /// cached, verify the block and import it.
     ///
     /// This should only accept gossip verified blobs, so we should not have to worry about dupes.
-    pub fn put_blob(&self, blob: Arc<BlobSidecar<T>>) -> Result<(), BlobCacheError> {
+    pub fn put_blob(&self, blob: Arc<BlobSidecar<T::EthSpec>>) -> Result<(), BlobCacheError> {
         // TODO(remove clones)
-        let verified = validate_blob(
+        let verified = validate_blob::<T::EthSpec>(
             &self.kzg,
             blob.blob.clone(),
             blob.kzg_commitment.clone(),
             blob.kzg_proof,
-        )?;
+        ).map_err(|e|BlobCacheError::Kzg(e))?;
 
         if verified {
             let mut blob_cache = self.gossip_blob_cache.lock();
@@ -85,22 +87,29 @@ impl<T: EthSpec> GossipBlobCache<T> {
         Ok(())
     }
 
-    pub fn put_block(&self, block: ExecutedBlock<T>) -> () {
+    pub fn put_block(&self, executed_block: ExecutedBlock<T>) -> Result<(), BlobCacheError> {
         let mut guard = self.gossip_blob_cache.lock();
         guard
-            .entry(block.block_root)
+            .entry(executed_block.block_root)
             .and_modify(|cache| {
-                if cache.verified_blobs == block.block.message_eip4844().blob_kzg_commitments() {
-                    // send to reprocessing queue ?
-                } else if let Some(dup) = cache.executed_block.insert(block) {
-                    // return error
+                if let Ok(block) = executed_block.block.message_eip4844() {
+                    let verified_commitments_vec: Vec<_> = cache.verified_blobs.iter().map(|blob|blob.kzg_commitment).collect();
+                    let verified_commitments = VariableList::from(verified_commitments_vec);
+                    if verified_commitments == block.body.blob_kzg_commitments {
+                        // send to reprocessing queue ?
+                    } else {
+                        let _ = cache.executed_block.insert(executed_block);
+                        // log that we cached
+                    }
                 } else {
-                    // log that we cached it
+                    // log error
                 }
             })
             .or_insert(GossipBlobCacheInner {
                 verified_blobs: vec![],
-                executed_block: Some(block),
+                executed_block: Some(executed_block),
             });
+
+        Ok(())
     }
 }
diff --git a/consensus/types/src/blob_sidecar.rs b/consensus/types/src/blob_sidecar.rs
index ad6509cb0f..502e453aad 100644
--- a/consensus/types/src/blob_sidecar.rs
+++ b/consensus/types/src/blob_sidecar.rs
@@ -11,7 +11,7 @@ use test_random_derive::TestRandom;
 use tree_hash_derive::TreeHash;
 
 /// Container of the data that identifies an individual blob.
-#[derive(Encode, Decode, Clone, Debug, PartialEq)]
+#[derive(Encode, Decode, Clone, Debug, PartialEq, Eq, Hash)]
 pub struct BlobIdentifier {
     pub block_root: Hash256,
     pub index: u64,