BCI-2591 TXM TX Finalized State

common/client/multi_node.go

@@ -633,3 +633,11 @@ func (c *multiNode[CHAIN_ID, SEQ, ADDR, BLOCK_HASH, TX, TX_HASH, EVENT, EVENT_OP
 	}
 	return n.RPC().TransactionReceipt(ctx, txHash)
 }
+
+func (c *multiNode[CHAIN_ID, SEQ, ADDR, BLOCK_HASH, TX, TX_HASH, EVENT, EVENT_OPS, TX_RECEIPT, FEE, HEAD, RPC_CLIENT]) FinalizedBlock(ctx context.Context) (head HEAD, wee error) {
+	n, err := c.selectNode()
+	if err != nil {
+		return head, err
+	}
+	return n.RPC().FinalizedBlock(ctx)
+}

common/client/types.go

@@ -5,6 +5,7 @@ import (
 	"math/big"
 
 	"github.com/smartcontractkit/chainlink-common/pkg/assets"
+
 	feetypes "github.com/smartcontractkit/chainlink/v2/common/fee/types"
 	"github.com/smartcontractkit/chainlink/v2/common/types"
 )
@@ -113,6 +114,7 @@ type clientAPI[
 	BlockByNumber(ctx context.Context, number *big.Int) (HEAD, error)
 	BlockByHash(ctx context.Context, hash BLOCK_HASH) (HEAD, error)
 	LatestBlockHeight(context.Context) (*big.Int, error)
+	FinalizedBlock(ctx context.Context) (HEAD, error)
 
 	// Events
 	FilterEvents(ctx context.Context, query EVENT_OPS) ([]EVENT, error)