diff --git a/go.mod b/go.mod
index c583719..20ab013 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@ toolchain go1.23.3
 require (
 	git.itzana.me/strafesnet/go-grpc v0.0.0-20241129081229-9e166b3d11f7
 	git.itzana.me/strafesnet/utils v0.0.0-20220716194944-d8ca164052f9
+	github.com/dchest/siphash v1.2.3
 	github.com/go-faster/errors v0.7.1
 	github.com/go-faster/jx v1.1.0
 	github.com/ogen-go/ogen v1.2.1
diff --git a/go.sum b/go.sum
index 937e93e..79efebe 100644
--- a/go.sum
+++ b/go.sum
@@ -20,6 +20,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.5/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dchest/siphash v1.2.3 h1:QXwFc8cFOR2dSa/gE6o/HokBMWtLUaNDVd+22aKHeEA=
+github.com/dchest/siphash v1.2.3/go.mod h1:0NvQU092bT0ipiFN++/rXm69QG9tVxLAlQHIXMPAkHc=
 github.com/dlclark/regexp2 v1.11.0 h1:G/nrcoOa7ZXlpoa/91N3X7mM3r8eIlMBBJZvsz/mxKI=
 github.com/dlclark/regexp2 v1.11.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
diff --git a/pkg/service/scripts.go b/pkg/service/scripts.go
index d502c6e..10ecdba 100644
--- a/pkg/service/scripts.go
+++ b/pkg/service/scripts.go
@@ -7,6 +7,7 @@ import (
 	"git.itzana.me/strafesnet/maps-service/pkg/api"
 	"git.itzana.me/strafesnet/maps-service/pkg/datastore"
 	"git.itzana.me/strafesnet/maps-service/pkg/model"
+	"github.com/dchest/siphash"
 )
 
 var (
@@ -29,7 +30,7 @@ func (svc *Service) CreateScript(ctx context.Context, req *api.ScriptCreate) (*a
 
 	script, err := svc.DB.Scripts().Create(ctx, model.Script{
 		ID:           0,
-		Hash:         0, // TODO
+		Hash:         siphash.Hash(0,0,[]byte(req.Source)),
 		Source:       req.Source,
 		SubmissionID: req.SubmissionID.Or(0),
 	})
@@ -101,8 +102,7 @@ func (svc *Service) UpdateScript(ctx context.Context, req *api.ScriptUpdate, par
 	pmap := datastore.Optional()
 	if source,ok:=req.Source.Get();ok{
 		pmap.Add("source",source)
-		panic("unimplemented")
-		pmap.Add("from_script_hash",0)
+		pmap.Add("hash",siphash.Hash(0,0,[]byte(source)))
 	}
 	if SubmissionID,ok:=req.SubmissionID.Get();ok{
 		pmap.Add("submission_id",SubmissionID)