diff --git a/src/contracts/libraries/BeaconChainProofs.sol b/src/contracts/libraries/BeaconChainProofs.sol
index cdd0dd6d1..2c4b88662 100644
--- a/src/contracts/libraries/BeaconChainProofs.sol
+++ b/src/contracts/libraries/BeaconChainProofs.sol
@@ -11,37 +11,19 @@ import "../libraries/Endian.sol";
 //BeaconState Spec: https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#beaconstate
 library BeaconChainProofs {
     // constants are the number of fields and the heights of the different merkle trees used in merkleizing beacon chain containers
-    uint256 internal constant NUM_BEACON_BLOCK_HEADER_FIELDS = 5;
     uint256 internal constant BEACON_BLOCK_HEADER_FIELD_TREE_HEIGHT = 3;
 
-    uint256 internal constant NUM_BEACON_BLOCK_BODY_FIELDS = 11;
     uint256 internal constant BEACON_BLOCK_BODY_FIELD_TREE_HEIGHT = 4;
 
-    uint256 internal constant NUM_BEACON_STATE_FIELDS = 21;
     uint256 internal constant BEACON_STATE_FIELD_TREE_HEIGHT = 5;
 
-    uint256 internal constant NUM_ETH1_DATA_FIELDS = 3;
-    uint256 internal constant ETH1_DATA_FIELD_TREE_HEIGHT = 2;
-
-    uint256 internal constant NUM_VALIDATOR_FIELDS = 8;
     uint256 internal constant VALIDATOR_FIELD_TREE_HEIGHT = 3;
 
-    uint256 internal constant NUM_EXECUTION_PAYLOAD_HEADER_FIELDS = 15;
     //Note: changed in the deneb hard fork from 4->5
     uint256 internal constant EXECUTION_PAYLOAD_HEADER_FIELD_TREE_HEIGHT_DENEB = 5;
     uint256 internal constant EXECUTION_PAYLOAD_HEADER_FIELD_TREE_HEIGHT_CAPELLA = 4;
 
-    uint256 internal constant NUM_EXECUTION_PAYLOAD_FIELDS = 15;
-    uint256 internal constant EXECUTION_PAYLOAD_FIELD_TREE_HEIGHT = 4;
-
-    // HISTORICAL_ROOTS_LIMIT	 = 2**24, so tree height is 24
-    uint256 internal constant HISTORICAL_ROOTS_TREE_HEIGHT = 24;
-
-    // HISTORICAL_BATCH is root of state_roots and block_root, so number of leaves =  2^1
-    uint256 internal constant HISTORICAL_BATCH_TREE_HEIGHT = 1;
-
     // SLOTS_PER_HISTORICAL_ROOT = 2**13, so tree height is 13
-    uint256 internal constant STATE_ROOTS_TREE_HEIGHT = 13;
     uint256 internal constant BLOCK_ROOTS_TREE_HEIGHT = 13;
 
     //HISTORICAL_ROOTS_LIMIT = 2**24, so tree height is 24
@@ -50,7 +32,6 @@ library BeaconChainProofs {
     //Index of block_summary_root in historical_summary container
     uint256 internal constant BLOCK_SUMMARY_ROOT_INDEX = 0;
 
-    uint256 internal constant NUM_WITHDRAWAL_FIELDS = 4;
     // tree height for hash tree of an individual withdrawal container
     uint256 internal constant WITHDRAWAL_FIELD_TREE_HEIGHT = 2;
 
@@ -64,31 +45,20 @@ library BeaconChainProofs {
 
     // in beacon block header https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#beaconblockheader
     uint256 internal constant SLOT_INDEX = 0;
-    uint256 internal constant PROPOSER_INDEX_INDEX = 1;
     uint256 internal constant STATE_ROOT_INDEX = 3;
     uint256 internal constant BODY_ROOT_INDEX = 4;
     // in beacon state https://github.com/ethereum/consensus-specs/blob/dev/specs/capella/beacon-chain.md#beaconstate
-    uint256 internal constant HISTORICAL_BATCH_STATE_ROOT_INDEX = 1;
-    uint256 internal constant BEACON_STATE_SLOT_INDEX = 2;
-    uint256 internal constant LATEST_BLOCK_HEADER_ROOT_INDEX = 4;
-    uint256 internal constant BLOCK_ROOTS_INDEX = 5;
-    uint256 internal constant STATE_ROOTS_INDEX = 6;
-    uint256 internal constant HISTORICAL_ROOTS_INDEX = 7;
-    uint256 internal constant ETH_1_ROOT_INDEX = 8;
     uint256 internal constant VALIDATOR_TREE_ROOT_INDEX = 11;
-    uint256 internal constant EXECUTION_PAYLOAD_HEADER_INDEX = 24;
     uint256 internal constant HISTORICAL_SUMMARIES_INDEX = 27;
 
     // in validator https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/beacon-chain.md#validator
     uint256 internal constant VALIDATOR_PUBKEY_INDEX = 0;
     uint256 internal constant VALIDATOR_WITHDRAWAL_CREDENTIALS_INDEX = 1;
     uint256 internal constant VALIDATOR_BALANCE_INDEX = 2;
-    uint256 internal constant VALIDATOR_SLASHED_INDEX = 3;
     uint256 internal constant VALIDATOR_WITHDRAWABLE_EPOCH_INDEX = 7;
 
     // in execution payload header
     uint256 internal constant TIMESTAMP_INDEX = 9;
-    uint256 internal constant WITHDRAWALS_ROOT_INDEX = 14;
 
     //in execution payload
     uint256 internal constant WITHDRAWALS_INDEX = 14;
@@ -97,9 +67,6 @@ library BeaconChainProofs {
     uint256 internal constant WITHDRAWAL_VALIDATOR_INDEX_INDEX = 1;
     uint256 internal constant WITHDRAWAL_VALIDATOR_AMOUNT_INDEX = 3;
 
-    //In historicalBatch
-    uint256 internal constant HISTORICALBATCH_STATEROOTS_INDEX = 1;
-
     //Misc Constants
 
     /// @notice The number of slots each epoch in the beacon chain