diff --git a/api/chain.go b/api/chain.go
index d10865664..9dbc090cd 100644
--- a/api/chain.go
+++ b/api/chain.go
@@ -116,7 +116,7 @@ func (a *API) enableChainHandlers() error {
 		"/chain/transactions/{height}/{index}",
 		"GET",
 		apirest.MethodAccessTypePublic,
-		a.chainTxHandler,
+		a.chainTxByHeightAndIndexHandler,
 	); err != nil {
 		return err
 	}
@@ -136,6 +136,14 @@ func (a *API) enableChainHandlers() error {
 	); err != nil {
 		return err
 	}
+	if err := a.Endpoint.RegisterMethod(
+		"/chain/transactions/{hash}",
+		"GET",
+		apirest.MethodAccessTypePublic,
+		a.chainTxByHashHandler,
+	); err != nil {
+		return err
+	}
 	if err := a.Endpoint.RegisterMethod(
 		"/chain/transactions/page/{page}",
 		"GET",
@@ -639,7 +647,7 @@ func (a *API) chainTxCostHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext
 //	@Success				204		"See [errors](vocdoni-api#errors) section"
 //	@Router					/chain/transactions/reference/{hash} [get]
 func (a *API) chainTxRefByHashHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext) error {
-	hash, err := hex.DecodeString(util.TrimHex(ctx.URLParam("hash")))
+	hash, err := hex.DecodeString(util.TrimHex(ctx.URLParam(ParamHash)))
 	if err != nil {
 		return err
 	}
@@ -658,7 +666,7 @@ func (a *API) chainTxRefByHashHandler(_ *apirest.APIdata, ctx *httprouter.HTTPCo
 	return ctx.Send(data, apirest.HTTPstatusOK)
 }
 
-// chainTxHandler
+// chainTxByHeightAndIndexHandler
 //
 //	@Summary		Transaction by block height and index
 //	@Description	Get transaction full information by block height and index. It returns JSON transaction protobuf encoded. Depending of transaction type will return different types of objects. Current transaction types can be found calling `/chain/transactions/cost`
@@ -670,7 +678,7 @@ func (a *API) chainTxRefByHashHandler(_ *apirest.APIdata, ctx *httprouter.HTTPCo
 //	@Success		200		{object}	GenericTransactionWithInfo
 //	@Success		204		"See [errors](vocdoni-api#errors) section"
 //	@Router			/chain/transactions/{height}/{index} [get]
-func (a *API) chainTxHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext) error {
+func (a *API) chainTxByHeightAndIndexHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext) error {
 	height, err := strconv.ParseInt(ctx.URLParam(ParamHeight), 10, 64)
 	if err != nil {
 		return err
@@ -697,6 +705,40 @@ func (a *API) chainTxHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext) er
 	return ctx.Send(data, apirest.HTTPstatusOK)
 }
 
+// chainTxByHashHandler
+//
+//	@Summary		Transaction by hash
+//	@Description	Get transaction full information by hash. It returns JSON transaction protobuf encoded. Depending of transaction type will return different types of objects. Current transaction types can be found calling `/chain/transactions/cost`
+//	@Tags			Chain
+//	@Accept			json
+//	@Produce		json
+//	@Param			hash	path		string	true	"Transaction hash"
+//	@Success		200		{object}	GenericTransactionWithInfo
+//	@Success		204		"See [errors](vocdoni-api#errors) section"
+//	@Router			/chain/transactions/{hash} [get]
+func (a *API) chainTxByHashHandler(_ *apirest.APIdata, ctx *httprouter.HTTPContext) error {
+	hash, err := hex.DecodeString(util.TrimHex(ctx.URLParam(ParamHash)))
+	if err != nil {
+		return ErrCantParseHexString.WithErr(err)
+	}
+	ref, err := a.indexer.GetTransactionByHash(hash)
+	if err != nil {
+		if errors.Is(err, indexer.ErrTransactionNotFound) {
+			return ErrTransactionNotFound
+		}
+		return ErrVochainGetTxFailed.WithErr(err)
+	}
+	tx := &GenericTransactionWithInfo{
+		TxContent: protoTxAsJSON(ref.RawTx),
+		TxInfo:    ref,
+	}
+	data, err := json.Marshal(tx)
+	if err != nil {
+		return err
+	}
+	return ctx.Send(data, apirest.HTTPstatusOK)
+}
+
 // chainTxListHandler
 //
 //	@Summary		List transactions
diff --git a/vochain/indexer/transaction.go b/vochain/indexer/transaction.go
index 31beb4465..41a6a1818 100644
--- a/vochain/indexer/transaction.go
+++ b/vochain/indexer/transaction.go
@@ -42,6 +42,18 @@ func (idx *Indexer) GetTxMetadataByHash(hash types.HexBytes) (*indexertypes.Tran
 	return indexertypes.TransactionMetadataFromDB(&sqlTxRef), nil
 }
 
+// GetTransactionByHash fetches the full tx for the given tx hash
+func (idx *Indexer) GetTransactionByHash(hash types.HexBytes) (*indexertypes.Transaction, error) {
+	sqlTxRef, err := idx.readOnlyQuery.GetTransactionByHash(context.TODO(), hash)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return nil, ErrTransactionNotFound
+		}
+		return nil, fmt.Errorf("tx hash %x not found: %v", hash, err)
+	}
+	return indexertypes.TransactionFromDB(&sqlTxRef), nil
+}
+
 // GetTransactionByHeightAndIndex fetches the full tx for the given tx height and block tx index
 func (idx *Indexer) GetTransactionByHeightAndIndex(blockHeight, blockIndex int64) (*indexertypes.Transaction, error) {
 	sqlTxRef, err := idx.readOnlyQuery.GetTransactionByHeightAndIndex(context.TODO(), indexerdb.GetTransactionByHeightAndIndexParams{