diff --git a/nip46/dynamic-signer.go b/nip46/dynamic-signer.go
index 6fcf40f..63db51d 100644
--- a/nip46/dynamic-signer.go
+++ b/nip46/dynamic-signer.go
@@ -40,9 +40,6 @@ func NewDynamicSigner(
 
 	// unless it is nil, this is called after every event is signed
 	onEventSigned func(event nostr.Event),
-
-	// unless it is nil, the results of this will be used in reply to get_relays
-	getRelays func(pubkey string) map[string]RelayReadWrite,
 ) DynamicSigner {
 	return DynamicSigner{
 		getHandlerSecretKey: getHandlerSecretKey,
diff --git a/nip52/calendar_event.go b/nip52/calendar_event.go
index 71c95ae..7b9514c 100644
--- a/nip52/calendar_event.go
+++ b/nip52/calendar_event.go
@@ -30,7 +30,7 @@ type CalendarEvent struct {
 }
 
 type Participant struct {
-	PubKey string
+	PubKey nostr.PubKey
 	Relay  string
 	Role   string
 }
@@ -77,9 +77,9 @@ func ParseCalendarEvent(event nostr.Event) CalendarEvent {
 		case "g":
 			calev.Geohashes = append(calev.Geohashes, tag[1])
 		case "p":
-			if nostr.IsValid32ByteHex(tag[1]) {
+			if pk, err := nostr.PubKeyFromHex(tag[1]); err == nil {
 				part := Participant{
-					PubKey: tag[1],
+					PubKey: pk,
 				}
 				if len(tag) > 2 {
 					part.Relay = tag[2]
@@ -129,7 +129,7 @@ func (calev CalendarEvent) ToHashtags() nostr.Tags {
 		tags = append(tags, nostr.Tag{"g", geohash})
 	}
 	for _, part := range calev.Participants {
-		tags = append(tags, nostr.Tag{"p", part.PubKey, part.Relay, part.Role})
+		tags = append(tags, nostr.Tag{"p", part.PubKey.Hex(), part.Relay, part.Role})
 	}
 	for _, reference := range calev.References {
 		tags = append(tags, nostr.Tag{"r", reference})
diff --git a/sdk/hints/lmdbh/db.go b/sdk/hints/lmdbh/db.go
index a47b875..002f280 100644
--- a/sdk/hints/lmdbh/db.go
+++ b/sdk/hints/lmdbh/db.go
@@ -153,7 +153,7 @@ func (lh *LMDBHints) PrintScores() {
 		}
 		defer cursor.Close()
 
-		var lastPubkey string
+		var lastPubkey nostr.PubKey
 		i := 0
 
 		for k, v, err := cursor.Get(nil, nil, lmdb.First); err == nil; k, v, err = cursor.Get(nil, nil, lmdb.Next) {
diff --git a/sdk/hints/lmdbh/keys.go b/sdk/hints/lmdbh/keys.go
index 34c4854..6d33356 100644
--- a/sdk/hints/lmdbh/keys.go
+++ b/sdk/hints/lmdbh/keys.go
@@ -2,7 +2,6 @@ package lmdbh
 
 import (
 	"encoding/binary"
-	"encoding/hex"
 
 	"fiatjaf.com/nostr"
 )
@@ -14,8 +13,8 @@ func encodeKey(pubhintkey nostr.PubKey, relay string) []byte {
 	return k
 }
 
-func parseKey(k []byte) (pubkey string, relay string) {
-	pubkey = hex.EncodeToString(k[0:32])
+func parseKey(k []byte) (pubkey nostr.PubKey, relay string) {
+	pubkey = nostr.PubKey(k[0:32])
 	relay = string(k[32:])
 	return
 }