diff --git a/event.go b/event.go
index cce165e..2dd9a97 100644
--- a/event.go
+++ b/event.go
@@ -16,9 +16,6 @@ type Event struct {
 	Tags      Tags
 	Content   string
 	Sig       string
-
-	// anything here will be mashed together with the main event object when serializing
-	extra map[string]any
 }
 
 // Event Stringer interface, just returns the raw JSON as a string.
diff --git a/event_easyjson.go b/event_easyjson.go
index 435583c..8888b9c 100644
--- a/event_easyjson.go
+++ b/event_easyjson.go
@@ -22,7 +22,6 @@ func easyjsonF642ad3eDecodeGithubComNbdWtfGoNostr(in *jlexer.Lexer, out *Event)
 		in.Skip()
 		return
 	}
-	out.extra = make(map[string]any)
 	in.Delim('{')
 	for !in.IsDelim('}') {
 		key := in.UnsafeFieldName(true)
@@ -85,8 +84,6 @@ func easyjsonF642ad3eDecodeGithubComNbdWtfGoNostr(in *jlexer.Lexer, out *Event)
 			out.Content = in.String()
 		case "sig":
 			out.Sig = in.String()
-		default:
-			out.extra[key] = in.Interface()
 		}
 		in.WantComma()
 	}
@@ -155,12 +152,6 @@ func easyjsonF642ad3eEncodeGithubComNbdWtfGoNostr(out *jwriter.Writer, in Event)
 			out.String(in.Sig)
 		}
 	}
-	{
-		for key, value := range in.extra {
-			out.RawString(",\"" + key + "\":")
-			out.Raw(json.Marshal(value))
-		}
-	}
 	out.RawByte('}')
 }
 
diff --git a/event_extra.go b/event_extra.go
deleted file mode 100644
index 46263b3..0000000
--- a/event_extra.go
+++ /dev/null
@@ -1,68 +0,0 @@
-package nostr
-
-// Deprecated: this was never a good idea, stop using.
-func (evt *Event) SetExtra(key string, value any) {
-	if evt.extra == nil {
-		evt.extra = make(map[string]any)
-	}
-	evt.extra[key] = value
-}
-
-// Deprecated: this was never a good idea, stop using.
-func (evt *Event) RemoveExtra(key string) {
-	if evt.extra == nil {
-		return
-	}
-	delete(evt.extra, key)
-}
-
-// Deprecated: this was never a good idea, stop using.
-func (evt Event) GetExtra(key string) any {
-	ival, _ := evt.extra[key]
-	return ival
-}
-
-// Deprecated: this was never a good idea, stop using.
-func (evt Event) GetExtraString(key string) string {
-	ival, ok := evt.extra[key]
-	if !ok {
-		return ""
-	}
-	val, ok := ival.(string)
-	if !ok {
-		return ""
-	}
-	return val
-}
-
-// Deprecated: this was never a good idea, stop using.
-func (evt Event) GetExtraNumber(key string) float64 {
-	ival, ok := evt.extra[key]
-	if !ok {
-		return 0
-	}
-
-	switch val := ival.(type) {
-	case float64:
-		return val
-	case int:
-		return float64(val)
-	case int64:
-		return float64(val)
-	}
-
-	return 0
-}
-
-// Deprecated: this was never a good idea, stop using.
-func (evt Event) GetExtraBoolean(key string) bool {
-	ival, ok := evt.extra[key]
-	if !ok {
-		return false
-	}
-	val, ok := ival.(bool)
-	if !ok {
-		return false
-	}
-	return val
-}
diff --git a/event_test.go b/event_test.go
index c05e534..e5c9c37 100644
--- a/event_test.go
+++ b/event_test.go
@@ -12,8 +12,8 @@ import (
 func TestEventParsingAndVerifying(t *testing.T) {
 	rawEvents := []string{
 		`{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}`,
-		`{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524","extrakey":55}`,
-		`{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524","extrakey":"aaa"}`,
+		`{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}`,
+		`{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}`,
 		`{"kind":3,"id":"9e662bdd7d8abc40b5b15ee1ff5e9320efc87e9274d8d440c58e6eed2dddfbe2","pubkey":"373ebe3d45ec91977296a178d9f19f326c70631d2a1b0bbba5c5ecc2eb53b9e7","created_at":1644844224,"tags":[["p","3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"],["p","75fc5ac2487363293bd27fb0d14fb966477d0f1dbc6361d37806a6a740eda91e"],["p","46d0dfd3a724a302ca9175163bdf788f3606b3fd1bb12d5fe055d1e418cb60ea"]],"content":"{\"wss://nostr-pub.wellorder.net\":{\"read\":true,\"write\":true},\"wss://nostr.bitcoiner.social\":{\"read\":false,\"write\":true},\"wss://expensive-relay.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relayer.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relay.bitid.nz\":{\"read\":true,\"write\":true},\"wss://nostr.rocks\":{\"read\":true,\"write\":true}}","sig":"811355d3484d375df47581cb5d66bed05002c2978894098304f20b595e571b7e01b2efd906c5650080ffe49cf1c62b36715698e9d88b9e8be43029a2f3fa66be"}`,
 	}