diff --git a/blockchain/blockchain.go b/blockchain/blockchain.go
index 75d5175aee..ce39f8e587 100644
--- a/blockchain/blockchain.go
+++ b/blockchain/blockchain.go
@@ -339,6 +339,48 @@ func (b *Blockchain) Store(block *core.Block, blockCommitments *core.BlockCommit
 		if err := verifyBlock(txn, block); err != nil {
 			return err
 		}
+
+		// Firehose integration
+		// TODO: add runtime option to toggle this on and off
+		{
+			fmt.Printf("FIRE BLOCK_BEGIN %d\n", block.Number)
+
+			for ind_tx, tx := range block.Transactions {
+				fmt.Printf("FIRE BEGIN_TRX 0x%X ", tx.Hash().Bytes())
+
+				switch tx.(type) {
+				case *core.DeployTransaction:
+					fmt.Println("DEPLOY")
+				case *core.InvokeTransaction:
+					fmt.Println("INVOKE_FUNCTION")
+				case *core.DeclareTransaction:
+					fmt.Println("DECLARE")
+				case *core.DeployAccountTransaction:
+					fmt.Println("DEPLOY_ACCOUNT")
+				case *core.L1HandlerTransaction:
+					fmt.Println("L1_HANDLER")
+				default:
+					panic("not a transaction")
+				}
+
+				receipt := block.Receipts[ind_tx]
+
+				for ind_event, event := range receipt.Events {
+					fmt.Printf("FIRE TRX_BEGIN_EVENT 0x%X 0x%X\n", tx.Hash().Bytes(), event.From.Bytes())
+
+					for _, key := range event.Keys {
+						fmt.Printf("FIRE TRX_EVENT_KEY 0x%X %d 0x%X\n", tx.Hash().Bytes(), ind_event, key.Bytes())
+					}
+
+					for _, data := range event.Data {
+						fmt.Printf("FIRE TRX_EVENT_DATA 0x%X %d 0x%X\n", tx.Hash().Bytes(), ind_event, data.Bytes())
+					}
+				}
+			}
+
+			fmt.Printf("FIRE BLOCK_END %d 0x%X 0x%X %d %d\n", block.Number, block.Hash.Bytes(), block.ParentHash.Bytes(), block.Timestamp, len(block.Transactions))
+		}
+
 		if err := core.NewState(txn).Update(block.Number, stateUpdate, newClasses); err != nil {
 			return err
 		}