diff --git a/data/api/apiBlock.go b/data/api/apiBlock.go
index c8bc13821..9f5670933 100644
--- a/data/api/apiBlock.go
+++ b/data/api/apiBlock.go
@@ -59,6 +59,8 @@ type NotarizedBlock struct {
 	Nonce           uint64                    `json:"nonce"`
 	Round           uint64                    `json:"round"`
 	Shard           uint32                    `json:"shard"`
+	RootHash        string                    `json:"rootHash"`
+	MiniBlockHashes []string                  `json:"miniBlockHashes,omitempty"`
 	AlteredAccounts []*outport.AlteredAccount `json:"alteredAccounts,omitempty"`
 }
 
diff --git a/data/api/apiHyperBlock.go b/data/api/apiHyperBlock.go
new file mode 100644
index 000000000..01575df45
--- /dev/null
+++ b/data/api/apiHyperBlock.go
@@ -0,0 +1,28 @@
+package api
+
+import (
+	"time"
+
+	"github.com/ElrondNetwork/elrond-go-core/data/transaction"
+)
+
+// Hyperblock contains all fully executed (both in source and in destination shards) transactions notarized in a given metablock
+type Hyperblock struct {
+	Hash                   string                              `json:"hash"`
+	PrevBlockHash          string                              `json:"prevBlockHash"`
+	StateRootHash          string                              `json:"stateRootHash"`
+	Nonce                  uint64                              `json:"nonce"`
+	Round                  uint64                              `json:"round"`
+	Epoch                  uint32                              `json:"epoch"`
+	NumTxs                 uint32                              `json:"numTxs"`
+	AccumulatedFees        string                              `json:"accumulatedFees,omitempty"`
+	DeveloperFees          string                              `json:"developerFees,omitempty"`
+	AccumulatedFeesInEpoch string                              `json:"accumulatedFeesInEpoch,omitempty"`
+	DeveloperFeesInEpoch   string                              `json:"developerFeesInEpoch,omitempty"`
+	Timestamp              time.Duration                       `json:"timestamp,omitempty"`
+	EpochStartInfo         *EpochStartInfo                     `json:"epochStartInfo,omitempty"`
+	EpochStartShardsData   []*EpochStartShardData              `json:"epochStartShardsData,omitempty"`
+	ShardBlocks            []*NotarizedBlock                   `json:"shardBlocks"`
+	Transactions           []*transaction.ApiTransactionResult `json:"transactions"`
+	Status                 string                              `json:"status,omitempty"`
+}
diff --git a/data/transaction/apiTransactionResult.go b/data/transaction/apiTransactionResult.go
index c56a7bb39..eda0349c0 100644
--- a/data/transaction/apiTransactionResult.go
+++ b/data/transaction/apiTransactionResult.go
@@ -62,7 +62,7 @@ type ApiTransactionResult struct {
 	CallType                          string                    `json:"callType,omitempty"`
 	RelayerAddress                    string                    `json:"relayerAddress,omitempty"`
 	RelayedValue                      string                    `json:"relayedValue,omitempty"`
-	ChainID                           string                    `json:"chainID"`
+	ChainID                           string                    `json:"chainID,omitempty"`
 	Version                           uint32                    `json:"version,omitempty"`
 	Options                           uint32                    `json:"options"`
 }