diff --git a/go.mod b/go.mod
index ee22b66..d16188e 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,7 @@ module github.com/blinklabs-io/snek
 go 1.20
 
 require (
-	github.com/blinklabs-io/gouroboros v0.57.0
-	github.com/fxamacker/cbor/v2 v2.5.0
+	github.com/blinklabs-io/gouroboros v0.58.0
 	github.com/gen2brain/beeep v0.0.0-20230602101333-f384c29b62dd
 	github.com/gin-gonic/gin v1.9.1
 	github.com/kelseyhightower/envconfig v1.4.0
@@ -28,6 +27,7 @@ require (
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/fxamacker/cbor/v2 v2.5.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-openapi/jsonpointer v0.20.0 // indirect
diff --git a/go.sum b/go.sum
index e994527..772305d 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,8 @@ cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGB
 cloud.google.com/go/compute/metadata v0.2.3/go.mod h1:VAV5nSsACxMJvgaAuX6Pk2AawlZn8kiOGuCv6gTkwuA=
 github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
 github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
-github.com/blinklabs-io/gouroboros v0.57.0 h1:k5Y706vvYAGM3bCtEhh6WRHGrvS3S6n1MT9vNLFAe/E=
-github.com/blinklabs-io/gouroboros v0.57.0/go.mod h1:D5YJka8EyVmiXNMbRvjH23H9lNMLA4+qSlNNC/j7R0k=
+github.com/blinklabs-io/gouroboros v0.58.0 h1:W1/fjntOfJ3Yn41/SjgxV4cS7XSuogCZYznygRXUj8Q=
+github.com/blinklabs-io/gouroboros v0.58.0/go.mod h1:D5YJka8EyVmiXNMbRvjH23H9lNMLA4+qSlNNC/j7R0k=
 github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
 github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
 github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
diff --git a/input/chainsync/block.go b/input/chainsync/block.go
index 27c486e..729bd0b 100644
--- a/input/chainsync/block.go
+++ b/input/chainsync/block.go
@@ -15,15 +15,12 @@
 package chainsync
 
 import (
-	"fmt"
-
 	"github.com/blinklabs-io/gouroboros/ledger"
-	"github.com/fxamacker/cbor/v2"
 )
 
 type BlockContext struct {
-	BlockNumber uint64           `json:"blockNumber"`
-	SlotNumber  uint64           `json:"slotNumber"`
+	BlockNumber uint64 `json:"blockNumber"`
+	SlotNumber  uint64 `json:"slotNumber"`
 }
 
 type BlockEvent struct {
@@ -50,16 +47,10 @@ func NewBlockHeaderContext(block ledger.BlockHeader) BlockContext {
 }
 
 func NewBlockEvent(block ledger.Block, includeCbor bool) BlockEvent {
-	keyCbor, err := cbor.Marshal(block.IssuerVkey())
-	if err != nil {
-		panic(err)
-	}
-	// iss := ledger.NewBlake2b256(block.IssuerVkey())
 	evt := BlockEvent{
 		BlockBodySize: block.BlockBodySize(),
 		BlockHash:     block.Hash(),
-		IssuerVkey:    fmt.Sprintf("%x", keyCbor),
-		// IssuerVkey:    iss.String(),
+		IssuerVkey:    block.IssuerVkey().Hash().String(),
 	}
 	if includeCbor {
 		evt.BlockCbor = block.Cbor()
diff --git a/input/chainsync/tx.go b/input/chainsync/tx.go
index d530fda..152bac9 100644
--- a/input/chainsync/tx.go
+++ b/input/chainsync/tx.go
@@ -48,11 +48,11 @@ func NewTransactionContext(block ledger.Block, tx ledger.Transaction, index uint
 
 func NewTransactionEvent(block ledger.Block, tx ledger.Transaction, includeCbor bool) TransactionEvent {
 	evt := TransactionEvent{
-		BlockHash:       block.Hash(),
-		Inputs:          tx.Inputs(),
-		Outputs:         tx.Outputs(),
-		Fee:             tx.Fee(),
-		TTL:             tx.TTL(),
+		BlockHash: block.Hash(),
+		Inputs:    tx.Inputs(),
+		Outputs:   tx.Outputs(),
+		Fee:       tx.Fee(),
+		TTL:       tx.TTL(),
 	}
 	if includeCbor {
 		evt.TransactionCbor = tx.Cbor()
diff --git a/output/webhook/webhook.go b/output/webhook/webhook.go
index 1570a74..b31b7be 100644
--- a/output/webhook/webhook.go
+++ b/output/webhook/webhook.go
@@ -118,10 +118,6 @@ func formatWebhook(e *event.Event, format string) []byte {
 		case "chainsync.block":
 			be := e.Payload.(chainsync.BlockEvent)
 			bc := e.Context.(chainsync.BlockContext)
-			// keyCbor, err := cbor.Marshal(be.IssuerVkey)
-			// if err != nil {
-			// 	panic(err)
-			// }
 			dme.Title = "New Cardano Block"
 			dmefs = append(dmefs, &DiscordMessageEmbedField{
 				Name:  "Block Number",
@@ -135,11 +131,10 @@ func formatWebhook(e *event.Event, format string) []byte {
 				Name:  "Block Hash",
 				Value: be.BlockHash,
 			})
-			// TODO: get the pool identifier from be.IssuerVkey
-			// dmefs = append(dmefs, &DiscordMessageEmbedField{
-			// 	Name:  "Issuer Vkey",
-			// 	Value: fmt.Sprintf("%x", keyCbor),
-			// })
+			dmefs = append(dmefs, &DiscordMessageEmbedField{
+				Name:  "Issuer Vkey",
+				Value: be.IssuerVkey,
+			})
 			// TODO: fix this URL for different networks
 			dme.URL = fmt.Sprintf("https://cexplorer.io/block/%s", be.BlockHash)
 		case "chainsync.rollback":