diff --git a/internal/pkg/dir_test.go b/internal/pkg/dir_test.go
index de2f1a1..6d94391 100644
--- a/internal/pkg/dir_test.go
+++ b/internal/pkg/dir_test.go
@@ -39,10 +39,10 @@ func TestFlatten(t *testing.T) {
 			"checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq": {Mode: 0400, Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX": {Mode: 0400, Data: []byte{0}},
-			"identifier/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq": {Mode: 0400, Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
-			"identifier/cafebabecafebabecafebabecafebabecafebabecafebabecafebabecafebabe": {Mode: 0400, Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
-			"identifier/deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef": {Mode: 0400, Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
+			"identifier/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX")},
+			"identifier/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
+			"identifier/cafebabecafebabecafebabecafebabecafebabecafebabecafebabecafebabe": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
+			"identifier/deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
 
 			"work": {Mode: fs.ModeDir | 0700},
 		}, []pkg.FlatEntry{
@@ -53,13 +53,13 @@ func TestFlatten(t *testing.T) {
 			{Mode: 0400, Path: "checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX", Data: []byte{0}},
 
 			{Mode: fs.ModeDir | 0700, Path: "identifier"},
-			{Mode: 0400, Path: "identifier/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq", Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
-			{Mode: 0400, Path: "identifier/cafebabecafebabecafebabecafebabecafebabecafebabecafebabecafebabe", Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
-			{Mode: 0400, Path: "identifier/deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef", Data: []byte{0, 0, 0, 0, 0xad, 0xb, 0, 4, 0xfe, 0xfe, 0, 0, 0xfe, 0xca, 0, 0}},
-			{Mode: 0400, Path: "identifier/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX", Data: []byte{0}},
+			{Mode: fs.ModeSymlink | 0777, Path: "identifier/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq", Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
+			{Mode: fs.ModeSymlink | 0777, Path: "identifier/cafebabecafebabecafebabecafebabecafebabecafebabecafebabecafebabe", Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
+			{Mode: fs.ModeSymlink | 0777, Path: "identifier/deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef", Data: []byte("../checksum/0bSFPu5Tnd-2Jj0Mv6co23PW2t3BmHc7eLFj9TgY3eIBg8zislo7xZYNBqovVLcq")},
+			{Mode: fs.ModeSymlink | 0777, Path: "identifier/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX", Data: []byte("../checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX")},
 
 			{Mode: fs.ModeDir | 0700, Path: "work"},
-		}, pkg.MustDecode("G4u4W77C3u46oSAzwPTERKbS9h76iIvcd7Zl8p8Y6hTMb4_QGpH0Glg_DIJg-Usa")},
+		}, pkg.MustDecode("St9rlE-mGZ5gXwiv_hzQ_B8bZP-UUvSNmf4nHUZzCMOumb6hKnheZSe0dmnuc4Q2")},
 
 		{"sample load or store", fstest.MapFS{
 			".": {Mode: fs.ModeDir | 0700},
@@ -68,7 +68,7 @@ func TestFlatten(t *testing.T) {
 			"checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU": {Mode: 0400, Data: []byte("\x7f\xe1\x69\xa2\xdd\x63\x96\x26\x83\x79\x61\x8b\xf0\x3f\xd5\x16\x9a\x39\x3a\xdb\xcf\xb1\xbc\x8d\x33\xff\x75\xee\x62\x56\xa9\xf0\x27\xac\x13\x94\x69")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU": {Mode: 0400, Data: []byte("\x7f\xe1\x69\xa2\xdd\x63\x96\x26\x83\x79\x61\x8b\xf0\x3f\xd5\x16\x9a\x39\x3a\xdb\xcf\xb1\xbc\x8d\x33\xff\x75\xee\x62\x56\xa9\xf0\x27\xac\x13\x94\x69")},
+			"identifier/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU")},
 
 			"work": {Mode: fs.ModeDir | 0700},
 		}, []pkg.FlatEntry{
@@ -78,10 +78,10 @@ func TestFlatten(t *testing.T) {
 			{Mode: 0400, Path: "checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU", Data: []byte("\x7f\xe1\x69\xa2\xdd\x63\x96\x26\x83\x79\x61\x8b\xf0\x3f\xd5\x16\x9a\x39\x3a\xdb\xcf\xb1\xbc\x8d\x33\xff\x75\xee\x62\x56\xa9\xf0\x27\xac\x13\x94\x69")},
 
 			{Mode: fs.ModeDir | 0700, Path: "identifier"},
-			{Mode: 0400, Path: "identifier/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU", Data: []byte("\x7f\xe1\x69\xa2\xdd\x63\x96\x26\x83\x79\x61\x8b\xf0\x3f\xd5\x16\x9a\x39\x3a\xdb\xcf\xb1\xbc\x8d\x33\xff\x75\xee\x62\x56\xa9\xf0\x27\xac\x13\x94\x69")},
+			{Mode: fs.ModeSymlink | 0777, Path: "identifier/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU", Data: []byte("../checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU")},
 
 			{Mode: fs.ModeDir | 0700, Path: "work"},
-		}, pkg.MustDecode("bAJdeuI2cITlff5uIDbMKIiaW6zB-_XGinOMOMjNmltL3YAanXLiV64_jsXeQMXn")},
+		}, pkg.MustDecode("4WHaMvRRcCac1uAyXnEklEd2YaNQBj6rXlfMntX9GgYLij3By1znv5QYPGJHYQIH")},
 
 		{"sample directory step simple", fstest.MapFS{
 			".": {Mode: fs.ModeDir | 0700},
diff --git a/internal/pkg/net_test.go b/internal/pkg/net_test.go
index dbd956a..0466a4f 100644
--- a/internal/pkg/net_test.go
+++ b/internal/pkg/net_test.go
@@ -150,7 +150,7 @@ func TestHTTP(t *testing.T) {
 			} else if gotIdent := f.ID(); gotIdent != (pkg.Checksum{}) {
 				t.Fatalf("ID: %x, want %x", gotIdent, pkg.Checksum{})
 			}
-		}, pkg.MustDecode("bAJdeuI2cITlff5uIDbMKIiaW6zB-_XGinOMOMjNmltL3YAanXLiV64_jsXeQMXn")},
+		}, pkg.MustDecode("4WHaMvRRcCac1uAyXnEklEd2YaNQBj6rXlfMntX9GgYLij3By1znv5QYPGJHYQIH")},
 
 		{"store", nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
 			var (
@@ -184,6 +184,6 @@ func TestHTTP(t *testing.T) {
 			} else if checksum != testdataChecksum {
 				t.Fatalf("Hash: %x, want %x", checksum, testdataChecksum)
 			}
-		}, pkg.MustDecode("bAJdeuI2cITlff5uIDbMKIiaW6zB-_XGinOMOMjNmltL3YAanXLiV64_jsXeQMXn")},
+		}, pkg.MustDecode("4WHaMvRRcCac1uAyXnEklEd2YaNQBj6rXlfMntX9GgYLij3By1znv5QYPGJHYQIH")},
 	})
 }
diff --git a/internal/pkg/pkg.go b/internal/pkg/pkg.go
index 76e25d6..f56d42d 100644
--- a/internal/pkg/pkg.go
+++ b/internal/pkg/pkg.go
@@ -342,8 +342,8 @@ func (c *Cache) storeFile(
 		return err
 	}
 
-	return os.Link(
-		checksumPathname.String(),
+	return os.Symlink(
+		"../"+dirChecksum+"/"+path.Base(checksumPathname.String()),
 		identifierPathname.String(),
 	)
 }
diff --git a/internal/pkg/pkg_test.go b/internal/pkg/pkg_test.go
index 12b0bd9..915c720 100644
--- a/internal/pkg/pkg_test.go
+++ b/internal/pkg/pkg_test.go
@@ -305,7 +305,7 @@ func TestCache(t *testing.T) {
 			if _, _, err := c.LoadFile(zeroIdent); !reflect.DeepEqual(err, wantErrNonexistentZero) {
 				t.Fatalf("LoadFile: error = %#v, want %#v", err, wantErrNonexistentZero)
 			}
-		}, pkg.MustDecode("G4u4W77C3u46oSAzwPTERKbS9h76iIvcd7Zl8p8Y6hTMb4_QGpH0Glg_DIJg-Usa")},
+		}, pkg.MustDecode("St9rlE-mGZ5gXwiv_hzQ_B8bZP-UUvSNmf4nHUZzCMOumb6hKnheZSe0dmnuc4Q2")},
 
 		{"directory", nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
 			id := pkg.KindTar.Ident(