diff --git a/internal/config/config.go b/internal/config/config.go
index 16257fc..3ab64b7 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -19,6 +19,7 @@ import (
 	"os"
 	"runtime"
 
+	"github.com/blinklabs-io/bluefin/internal/version"
 	ouroboros "github.com/blinklabs-io/gouroboros"
 	"github.com/kelseyhightower/envconfig"
 	"gopkg.in/yaml.v2"
@@ -62,8 +63,9 @@ type WalletConfig struct {
 }
 
 type MinerConfig struct {
-	WorkerCount      int `yaml:"workers" envconfig:"WORKER_COUNT"`
-	HashRateInterval int `yaml:"hashRateInterval" envconfig:"HASH_RATE_INTERVAL"`
+	WorkerCount      int    `yaml:"workers" envconfig:"WORKER_COUNT"`
+	HashRateInterval int    `yaml:"hashRateInterval" envconfig:"HASH_RATE_INTERVAL"`
+	Message          string `yaml:"message" envconfig:"MINER_MESSAGE"`
 }
 
 type LoggingConfig struct {
@@ -104,6 +106,7 @@ var globalConfig = &Config{
 	Miner: MinerConfig{
 		WorkerCount:      max(1, runtime.NumCPU()/2),
 		HashRateInterval: 60,
+		Message:          fmt.Sprintf("Bluefin %s by Blink Labs", version.GetVersionString()),
 	},
 	Network: "mainnet",
 	Profile: "tuna-v1",
diff --git a/internal/miner/miner.go b/internal/miner/miner.go
index 2e8577f..8cfd78e 100644
--- a/internal/miner/miner.go
+++ b/internal/miner/miner.go
@@ -24,7 +24,6 @@ import (
 	"github.com/blinklabs-io/bluefin/internal/config"
 	"github.com/blinklabs-io/bluefin/internal/logging"
 	"github.com/blinklabs-io/bluefin/internal/storage"
-	"github.com/blinklabs-io/bluefin/internal/version"
 	"github.com/blinklabs-io/bluefin/internal/wallet"
 
 	models "github.com/blinklabs-io/cardano-models"
@@ -208,7 +207,7 @@ func (m *Miner) Start() {
 			0,
 			cbor.IndefLengthList{
 				userPkh,
-				[]byte(fmt.Sprintf("Bluefin %s by Blink Labs", version.GetVersionString())),
+				[]byte(cfg.Miner.Message),
 			},
 		)
 		minerCredCbor, err := cbor.Encode(&minerCredential)
@@ -302,13 +301,8 @@ func (m *Miner) Start() {
 			DifficultyNumber: difficultyNumber,
 			EpochTime:        epochTime,
 			RealTimeNow:      90000 + realTimeNow,
-			Extra: []byte(
-				fmt.Sprintf(
-					"Bluefin %s by Blink Labs",
-					version.GetVersionString(),
-				),
-			),
-			Interlink: currentInterlink,
+			Extra:            []byte(cfg.Miner.Message),
+			Interlink:        currentInterlink,
 		}
 	} else {
 		blockData := m.blockData.(models.TunaV2State)
diff --git a/internal/tx/tx.go b/internal/tx/tx.go
index e75bedc..0e1b3e0 100644
--- a/internal/tx/tx.go
+++ b/internal/tx/tx.go
@@ -44,7 +44,6 @@ import (
 	"github.com/blinklabs-io/bluefin/internal/config"
 	"github.com/blinklabs-io/bluefin/internal/logging"
 	"github.com/blinklabs-io/bluefin/internal/storage"
-	"github.com/blinklabs-io/bluefin/internal/version"
 	"github.com/blinklabs-io/bluefin/internal/wallet"
 )
 
@@ -238,7 +237,7 @@ func createTx(blockData any, nonce [16]byte) ([]byte, error) {
 			0,
 			cbor.IndefLengthList{
 				userPkh,
-				[]byte(fmt.Sprintf("Bluefin %s by Blink Labs", version.GetVersionString())),
+				[]byte(cfg.Miner.Message),
 			},
 		)
 		// Convert old and new block numbers to byte representation for use in token names