diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/inputtype.go b/cmds/ocm/commands/ocmcmds/common/inputs/inputtype.go
index de73f81337..6a4d309926 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/inputtype.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/inputtype.go
@@ -15,7 +15,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/cobrautils/flagsets"
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/clictx"
 	"github.com/open-component-model/ocm/pkg/contexts/datacontext"
 	"github.com/open-component-model/ocm/pkg/errors"
@@ -87,7 +87,7 @@ type InputResourceInfo struct {
 type InputSpec interface {
 	runtime.VersionedTypedObject
 	Validate(fldPath *field.Path, ctx Context, inputFilePath string) field.ErrorList
-	GetBlob(ctx Context, info InputResourceInfo) (accessio.BlobAccess, string, error)
+	GetBlob(ctx Context, info InputResourceInfo) (blobaccess.BlobAccess, string, error)
 	GetInputVersion(ctx Context) string
 }
 
@@ -272,7 +272,7 @@ func (r *UnknownInputSpec) Validate(fldPath *field.Path, ctx Context, inputFileP
 	return field.ErrorList{field.Invalid(fldPath.Child("type"), r.GetType(), "unknown type")}
 }
 
-func (r *UnknownInputSpec) GetBlob(ctx Context, info InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (r *UnknownInputSpec) GetBlob(ctx Context, info InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	return nil, "", errors.ErrUnknown("input type", r.GetType())
 }
 
@@ -329,7 +329,7 @@ func (s *GenericInputSpec) Validate(fldPath *field.Path, ctx Context, inputFileP
 	return s.effective.Validate(fldPath, ctx, inputFilePath)
 }
 
-func (s *GenericInputSpec) GetBlob(ctx Context, info InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *GenericInputSpec) GetBlob(ctx Context, info InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	if s.effective == nil {
 		var err error
 		s.effective, err = s.Evaluate(For(ctx))
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/binary/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/binary/spec.go
index 9e2b3e6cbc..d7c344b0e2 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/binary/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/binary/spec.go
@@ -9,7 +9,7 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/runtime"
 )
 
@@ -39,6 +39,6 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return nil
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
-	return s.ProcessBlob(ctx, accessio.DataAccessForBytes([]byte(s.Data)), ctx.FileSystem())
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
+	return s.ProcessBlob(ctx, blobaccess.DataAccessForBytes([]byte(s.Data)), ctx.FileSystem())
 }
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/directory/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/directory/spec.go
index 608c06becb..a9d131799c 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/directory/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/directory/spec.go
@@ -11,7 +11,7 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess/dirtree"
 	"github.com/open-component-model/ocm/pkg/utils"
 )
@@ -58,7 +58,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return allErrs
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	fs := ctx.FileSystem()
 	inputInfo, inputPath, err := inputs.FileInfo(ctx, s.Path, info.InputFilePath)
 	if err != nil {
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/docker/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/docker/spec.go
index 021b41f275..e7a5a6f29c 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/docker/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/docker/spec.go
@@ -12,7 +12,7 @@ import (
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/artifactset"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/docker"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/accessmethods/ociartifact"
@@ -47,7 +47,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return allErrs
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	ctx.Printf("image %s\n", s.Path)
 	locator, version, err := docker.ParseGenericRef(s.Path)
 	if err != nil {
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/dockermulti/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/dockermulti/spec.go
index 88aa305fa2..5b82a26608 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/dockermulti/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/dockermulti/spec.go
@@ -7,7 +7,6 @@ package dockermulti
 import (
 	"fmt"
 
-	"github.com/open-component-model/ocm/pkg/contexts/oci/annotations"
 	. "github.com/open-component-model/ocm/pkg/finalizer"
 
 	"github.com/opencontainers/go-digest"
@@ -15,9 +14,10 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/clictx"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
+	"github.com/open-component-model/ocm/pkg/contexts/oci/annotations"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/artifactset"
@@ -99,13 +99,13 @@ func (s *Spec) getVariant(ctx clictx.Context, finalize *Finalizer, variant strin
 	return art, nil
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	index := artdesc.NewIndexArtifact()
 	i := 0
 
 	index.SetAnnotation(annotations.COMPVERS_ANNOTATION, info.ComponentVersion.String())
 
-	feedback := func(blob accessio.BlobAccess, art cpi.ArtifactAccess) error {
+	feedback := func(blob blobaccess.BlobAccess, art cpi.ArtifactAccess) error {
 		desc := artdesc.DefaultBlobDescriptor(blob)
 		if art.IsManifest() {
 			cfgBlob, err := art.ManifestAccess().GetConfigBlob()
@@ -130,7 +130,7 @@ func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (acces
 
 	blob, err := artifactset.SynthesizeArtifactBlobFor(info.ComponentVersion.GetVersion(), func() (fac artifactset.ArtifactFactory, main bool, err error) {
 		var art cpi.ArtifactAccess
-		var blob accessio.BlobAccess
+		var blob blobaccess.BlobAccess
 
 		switch {
 		case i > len(s.Variants):
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/file/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/file/spec.go
index d23d9dc140..c6491cd40e 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/file/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/file/spec.go
@@ -9,7 +9,7 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 )
 
 type Spec struct {
@@ -28,6 +28,6 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return (&FileProcessSpec{s.MediaFileSpec, nil}).Validate(fldPath, ctx, inputFilePath)
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	return (&FileProcessSpec{s.MediaFileSpec, nil}).GetBlob(ctx, info)
 }
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/file/support.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/file/support.go
index 6fd8abce72..9eea0655f5 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/file/support.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/file/support.go
@@ -14,7 +14,6 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/errors"
 	"github.com/open-component-model/ocm/pkg/mime"
@@ -36,7 +35,7 @@ func (s *FileProcessSpec) Validate(fldPath *field.Path, ctx inputs.Context, inpu
 	return allErrs
 }
 
-func (s *FileProcessSpec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *FileProcessSpec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	fs := ctx.FileSystem()
 	inputInfo, inputPath, err := inputs.FileInfo(ctx, s.Path, info.InputFilePath)
 	if err != nil {
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/helm/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/helm/spec.go
index 486b2ca1dd..d1cd8b67d7 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/helm/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/helm/spec.go
@@ -11,7 +11,7 @@ import (
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	ocihelm "github.com/open-component-model/ocm/pkg/contexts/oci/ociutils/helm"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/accessmethods/ociartifact"
 	"github.com/open-component-model/ocm/pkg/errors"
@@ -92,7 +92,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return allErrs
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blob accessio.BlobAccess, hint string, err error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blob blobaccess.BlobAccess, hint string, err error) {
 	var chartLoader loader.Loader
 	if s.HelmRepository == "" {
 		_, inputPath, err := inputs.FileInfo(ctx, s.Path, info.InputFilePath)
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage/spec.go
index e0d8ad72b4..714026c6df 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/ociimage/spec.go
@@ -11,7 +11,7 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/grammar"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/artifactset"
@@ -47,7 +47,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return allErrs
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	ctx.Printf("image %s\n", s.Path)
 	ref, err := oci.ParseRef(s.Path)
 	if err != nil {
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/spiff/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/spiff/spec.go
index a4303a34d4..6bf996289e 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/spiff/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/spiff/spec.go
@@ -15,7 +15,7 @@ import (
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/types/file"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/errors"
 	"github.com/open-component-model/ocm/pkg/runtime"
 )
@@ -62,7 +62,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return allErrs
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	return (&file.FileProcessSpec{s.MediaFileSpec, s.process}).GetBlob(ctx, info)
 }
 
diff --git a/cmds/ocm/commands/ocmcmds/common/inputs/types/utf8/spec.go b/cmds/ocm/commands/ocmcmds/common/inputs/types/utf8/spec.go
index 8db35cc935..4c19e5b1a4 100644
--- a/cmds/ocm/commands/ocmcmds/common/inputs/types/utf8/spec.go
+++ b/cmds/ocm/commands/ocmcmds/common/inputs/types/utf8/spec.go
@@ -11,7 +11,7 @@ import (
 
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs"
 	"github.com/open-component-model/ocm/cmds/ocm/commands/ocmcmds/common/inputs/cpi"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/runtime"
 )
 
@@ -110,7 +110,7 @@ func (s *Spec) Validate(fldPath *field.Path, ctx inputs.Context, inputFilePath s
 	return nil
 }
 
-func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (accessio.BlobAccess, string, error) {
+func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (blobaccess.BlobAccess, string, error) {
 	data, err := Plain([]byte(s.Text))
 
 	if s.Json != nil {
@@ -125,7 +125,7 @@ func (s *Spec) GetBlob(ctx inputs.Context, info inputs.InputResourceInfo) (acces
 	if err != nil {
 		return nil, "", err
 	}
-	return s.ProcessBlob(ctx, accessio.DataAccessForBytes(data), ctx.FileSystem())
+	return s.ProcessBlob(ctx, blobaccess.DataAccessForBytes(data), ctx.FileSystem())
 }
 
 func Prepare(raw []byte) (interface{}, error) {
diff --git a/cmds/ocm/commands/toicmds/package/bootstrap/cmd.go b/cmds/ocm/commands/toicmds/package/bootstrap/cmd.go
index 458acddd45..b074444b06 100644
--- a/cmds/ocm/commands/toicmds/package/bootstrap/cmd.go
+++ b/cmds/ocm/commands/toicmds/package/bootstrap/cmd.go
@@ -21,7 +21,6 @@ import (
 	"github.com/open-component-model/ocm/cmds/ocm/pkg/utils"
 	topicbootstrap "github.com/open-component-model/ocm/cmds/ocm/topics/toi/bootstrapping"
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/clictx"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/ocireg"
@@ -200,7 +199,7 @@ func (o *Command) Complete(args []string) error {
 		if err != nil {
 			return errors.Wrapf(err, "failed reading credentials file %q", o.CredentialsFile)
 		}
-		o.Credentials = accessio.DataAccessForBytes(data, o.CredentialsFile)
+		o.Credentials = blobaccess.DataAccessForBytes(data, o.CredentialsFile)
 	}
 	if len(o.ParameterFile) == 0 {
 		if ok, _ := vfs.FileExists(o.FileSystem(), DEFAULT_PARAMETER_FILE); ok {
@@ -212,7 +211,7 @@ func (o *Command) Complete(args []string) error {
 		if err != nil {
 			return errors.Wrapf(err, "failed reading parameter file %q", o.ParameterFile)
 		}
-		o.Parameters = accessio.DataAccessForBytes(data, o.ParameterFile)
+		o.Parameters = blobaccess.DataAccessForBytes(data, o.ParameterFile)
 	}
 	return nil
 }
diff --git a/pkg/common/accessio/access.go b/pkg/common/accessio/access.go
index df83758612..88f0e87d1b 100644
--- a/pkg/common/accessio/access.go
+++ b/pkg/common/accessio/access.go
@@ -63,14 +63,14 @@ type NopCloser = iotools.NopCloser
 ////////////////////////////////////////////////////////////////////////////////
 
 // Deprecated: use blobaccess.DataAccessForReaderFunction.
-func DataAccessForReaderFunction(reader func() (io.ReadCloser, error), origin string) DataAccess {
+func DataAccessForReaderFunction(reader func() (io.ReadCloser, error), origin string) blobaccess.DataAccess {
 	return blobaccess.DataAccessForReaderFunction(reader, origin)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 // Deprecated: use blobaccess.DataAccessForFile.
-func DataAccessForFile(fs vfs.FileSystem, path string) DataAccess {
+func DataAccessForFile(fs vfs.FileSystem, path string) blobaccess.DataAccess {
 	return blobaccess.DataAccessForFile(fs, path)
 }
 
@@ -131,19 +131,19 @@ func BlobAccessForFile(mimeType string, path string, fss ...vfs.FileSystem) blob
 }
 
 // Deprecated: use blobaccess.ForFileWithCloser.
-func BlobAccessForFileWithCloser(closer io.Closer, mimeType string, path string, fss ...vfs.FileSystem) BlobAccess {
+func BlobAccessForFileWithCloser(closer io.Closer, mimeType string, path string, fss ...vfs.FileSystem) blobaccess.BlobAccess {
 	return blobaccess.ForFileWithCloser(closer, mimeType, path, fss...)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 // Deprecated: use blobaccess.ForTemporaryFile.
-func BlobAccessForTemporaryFile(mime string, temp vfs.File, fss ...vfs.FileSystem) BlobAccess {
+func BlobAccessForTemporaryFile(mime string, temp vfs.File, fss ...vfs.FileSystem) blobaccess.BlobAccess {
 	return blobaccess.ForTemporaryFile(mime, temp, fss...)
 }
 
 // Deprecated: use blobaccess.ForTemporaryFilePath.
-func BlobAccessForTemporaryFilePath(mime string, temp string, fss ...vfs.FileSystem) BlobAccess {
+func BlobAccessForTemporaryFilePath(mime string, temp string, fss ...vfs.FileSystem) blobaccess.BlobAccess {
 	return blobaccess.ForTemporaryFilePath(mime, temp, fss...)
 }
 
diff --git a/pkg/common/accessio/cache.go b/pkg/common/accessio/cache.go
index 62d20099a0..449e875eb3 100644
--- a/pkg/common/accessio/cache.go
+++ b/pkg/common/accessio/cache.go
@@ -36,12 +36,12 @@ func (_ StaticAllocatable) Unref() error { return nil }
 
 type BlobSource interface {
 	refmgmt.Allocatable
-	GetBlobData(digest digest.Digest) (int64, DataAccess, error)
+	GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess, error)
 }
 
 type BlobSink interface {
 	refmgmt.Allocatable
-	AddBlob(blob BlobAccess) (int64, digest.Digest, error)
+	AddBlob(blob blobaccess.BlobAccess) (int64, digest.Digest, error)
 }
 
 type RootedCache interface {
@@ -60,7 +60,7 @@ type CleanupCache interface {
 type BlobCache interface {
 	BlobSource
 	BlobSink
-	AddData(data DataAccess) (int64, digest.Digest, error)
+	AddData(data blobaccess.DataAccess) (int64, digest.Digest, error)
 }
 
 type blobCache struct {
@@ -180,7 +180,7 @@ func (c *blobCache) cleanup() error {
 	return vfs.Cleanup(c.cache)
 }
 
-func (c *blobCache) GetBlobData(digest digest.Digest) (int64, DataAccess, error) {
+func (c *blobCache) GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess, error) {
 	err := c.Ref()
 	if err == nil {
 		defer c.Unref()
@@ -193,7 +193,7 @@ func (c *blobCache) GetBlobData(digest digest.Digest) (int64, DataAccess, error)
 			vfs.WriteFile(c.cache, path+ACCESS_SUFFIX, []byte{}, 0o600)
 			// now := time.Now()
 			// c.cache.Chtimes(path+ACCESS_SUFFIX, now, now)
-			return fi.Size(), DataAccessForFile(c.cache, path), nil
+			return fi.Size(), blobaccess.DataAccessForFile(c.cache, path), nil
 		}
 		if os.IsNotExist(err) {
 			return -1, nil, blobaccess.ErrBlobNotFound(digest)
@@ -202,7 +202,7 @@ func (c *blobCache) GetBlobData(digest digest.Digest) (int64, DataAccess, error)
 	return BLOB_UNKNOWN_SIZE, nil, err
 }
 
-func (c *blobCache) AddBlob(blob BlobAccess) (int64, digest.Digest, error) {
+func (c *blobCache) AddBlob(blob blobaccess.BlobAccess) (int64, digest.Digest, error) {
 	err := c.Ref()
 	if err != nil {
 		return BLOB_UNKNOWN_SIZE, BLOB_UNKNOWN_DIGEST, err
@@ -349,7 +349,7 @@ func (c *cascadedCache) cleanup() error {
 	return list.Result()
 }
 
-func (c *cascadedCache) GetBlobData(digest digest.Digest) (int64, DataAccess, error) {
+func (c *cascadedCache) GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess, error) {
 	err := c.Ref()
 	if err != nil {
 		return BLOB_UNKNOWN_SIZE, nil, err
@@ -449,7 +449,7 @@ func (a *cached) GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess
 	return size, acc, err
 }
 
-func (a *cached) AddBlob(blob BlobAccess) (int64, digest.Digest, error) {
+func (a *cached) AddBlob(blob blobaccess.BlobAccess) (int64, digest.Digest, error) {
 	err := a.Ref()
 	if err != nil {
 		return BLOB_UNKNOWN_SIZE, BLOB_UNKNOWN_DIGEST, err
@@ -483,13 +483,13 @@ func (c *cached) AddData(data blobaccess.DataAccess) (int64, digest.Digest, erro
 type cachedAccess struct {
 	lock   sync.Mutex
 	cache  *cached
-	access DataAccess
+	access blobaccess.DataAccess
 	digest digest.Digest
 	size   int64
-	orig   DataAccess
+	orig   blobaccess.DataAccess
 }
 
-var _ DataAccess = (*cachedAccess)(nil)
+var _ blobaccess.DataAccess = (*cachedAccess)(nil)
 
 func CachedAccess(src BlobSource, dst BlobSink, cache BlobCache) (BlobCache, error) {
 	var err error
@@ -521,7 +521,7 @@ func CachedAccess(src BlobSource, dst BlobSink, cache BlobCache) (BlobCache, err
 	return c, nil
 }
 
-func newCachedAccess(cache *cached, blob DataAccess, size int64, digest digest.Digest) DataAccess {
+func newCachedAccess(cache *cached, blob blobaccess.DataAccess, size int64, digest digest.Digest) blobaccess.DataAccess {
 	return &cachedAccess{
 		cache:  cache,
 		size:   size,
@@ -553,7 +553,7 @@ func (c *cachedAccess) Get() ([]byte, error) {
 			if err != nil {
 				return nil, err
 			}
-			c.size, c.digest, err = c.cache.cache.AddData(DataAccessForBytes(data))
+			c.size, c.digest, err = c.cache.cache.AddData(blobaccess.DataAccessForBytes(data))
 			if err == nil {
 				c.orig.Close()
 				c.orig = nil
diff --git a/pkg/common/accessio/cache_test.go b/pkg/common/accessio/cache_test.go
index 4ca6235c3a..b54f0df386 100644
--- a/pkg/common/accessio/cache_test.go
+++ b/pkg/common/accessio/cache_test.go
@@ -14,6 +14,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/common"
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 )
 
 var _ = Describe("cache management", func() {
@@ -34,7 +35,7 @@ var _ = Describe("cache management", func() {
 		source, err = accessio.NewDefaultBlobCache()
 		Expect(err).To(Succeed())
 
-		td1_size, td1_digest, err = source.AddData(accessio.DataAccessForBytes([]byte("testdata")))
+		td1_size, td1_digest, err = source.AddData(blobaccess.DataAccessForBytes([]byte("testdata")))
 		Expect(err).To(Succeed())
 
 		cache, err = accessio.CachedAccess(source, nil, local)
diff --git a/pkg/common/accessio/digestreader.go b/pkg/common/accessio/digestreader.go
index 5f8b2c09d4..a01b84bd63 100644
--- a/pkg/common/accessio/digestreader.go
+++ b/pkg/common/accessio/digestreader.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/opencontainers/go-digest"
 
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
 
@@ -66,7 +67,7 @@ func NewDigestReaderWithHash(hash crypto.Hash, r io.Reader) *DigestReader {
 	}
 }
 
-func Digest(access DataAccess) (digest.Digest, error) {
+func Digest(access blobaccess.DataAccess) (digest.Digest, error) {
 	reader, err := access.Reader()
 	if err != nil {
 		return "", err
diff --git a/pkg/common/accessio/wrapper.go b/pkg/common/accessio/wrapper.go
index 90f5dc714d..04a508c8ad 100644
--- a/pkg/common/accessio/wrapper.go
+++ b/pkg/common/accessio/wrapper.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/opencontainers/go-digest"
 
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
 
@@ -42,10 +43,10 @@ func (d *readerWriter) WriteTo(w Writer) (size int64, dig digest.Digest, err err
 }
 
 type dataAccessWriter struct {
-	access DataAccess
+	access blobaccess.DataAccess
 }
 
-func NewDataAccessWriter(acc DataAccess) DataWriter {
+func NewDataAccessWriter(acc blobaccess.DataAccess) DataWriter {
 	return &dataAccessWriter{acc}
 }
 
diff --git a/pkg/common/accessobj/cachedblob_test.go b/pkg/common/accessobj/cachedblob_test.go
index 90a13b2079..fd0e44c6a7 100644
--- a/pkg/common/accessobj/cachedblob_test.go
+++ b/pkg/common/accessobj/cachedblob_test.go
@@ -28,7 +28,7 @@ type Source struct {
 }
 
 func NewData(data string) *Source {
-	return &Source{accessio.DataAccessForString(data), 0}
+	return &Source{blobaccess.DataAccessForString(data), 0}
 }
 
 func (s *Source) Reader() (io.ReadCloser, error) {
diff --git a/pkg/common/accessobj/filesystemaccess.go b/pkg/common/accessobj/filesystemaccess.go
index c61bcd1142..d2f18a152c 100644
--- a/pkg/common/accessobj/filesystemaccess.go
+++ b/pkg/common/accessobj/filesystemaccess.go
@@ -84,7 +84,7 @@ func (a *FileSystemBlobAccess) GetBlobData(digest digest.Digest) (int64, blobacc
 	}
 }
 
-func (a *FileSystemBlobAccess) GetBlobDataByName(name string) (accessio.DataAccess, error) {
+func (a *FileSystemBlobAccess) GetBlobDataByName(name string) (blobaccess.DataAccess, error) {
 	if a.IsClosed() {
 		return nil, accessio.ErrClosed
 	}
diff --git a/pkg/contexts/oci/artdesc/artifact.go b/pkg/contexts/oci/artdesc/artifact.go
index 35280dcd62..71a0f8f1ba 100644
--- a/pkg/contexts/oci/artdesc/artifact.go
+++ b/pkg/contexts/oci/artdesc/artifact.go
@@ -11,7 +11,7 @@ import (
 	"github.com/opencontainers/go-digest"
 	ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc/helper"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
@@ -160,7 +160,7 @@ func (d *Artifact) modifyAnnotation(mod func(annos *map[string]string)) error {
 	return nil
 }
 
-func (d *Artifact) ToBlobAccess() (accessio.BlobAccess, error) {
+func (d *Artifact) ToBlobAccess() (blobaccess.BlobAccess, error) {
 	if d.IsManifest() {
 		return d.manifest.ToBlobAccess()
 	}
diff --git a/pkg/contexts/oci/artdesc/config.go b/pkg/contexts/oci/artdesc/config.go
index b8672fe8d9..bce0dcf1d2 100644
--- a/pkg/contexts/oci/artdesc/config.go
+++ b/pkg/contexts/oci/artdesc/config.go
@@ -9,12 +9,12 @@ import (
 
 	ociv1 "github.com/opencontainers/image-spec/specs-go/v1"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 )
 
 type ImageConfig = ociv1.Image
 
-func ParseImageConfig(blob accessio.BlobAccess) (*ImageConfig, error) {
+func ParseImageConfig(blob blobaccess.BlobAccess) (*ImageConfig, error) {
 	var cfg ImageConfig
 
 	data, err := blob.Get()
diff --git a/pkg/contexts/oci/cpi/support/namespace.go b/pkg/contexts/oci/cpi/support/namespace.go
index 2a628e1377..b2258a6ab6 100644
--- a/pkg/contexts/oci/cpi/support/namespace.go
+++ b/pkg/contexts/oci/cpi/support/namespace.go
@@ -8,6 +8,7 @@ import (
 	"github.com/opencontainers/go-digest"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/refmgmt"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
@@ -39,7 +40,7 @@ type NamespaceContainer interface {
 	GetArtifact(i NamespaceAccessImpl, vers string) (cpi.ArtifactAccess, error)
 	NewArtifact(i NamespaceAccessImpl, arts ...*artdesc.Artifact) (cpi.ArtifactAccess, error)
 
-	AddArtifact(artifact cpi.Artifact, tags ...string) (access accessio.BlobAccess, err error)
+	AddArtifact(artifact cpi.Artifact, tags ...string) (access blobaccess.BlobAccess, err error)
 
 	AddTags(digest digest.Digest, tags ...string) error
 	ListTags() ([]string, error)
@@ -108,7 +109,7 @@ func (i *namespaceAccessImpl) GetArtifact(vers string) (cpi.ArtifactAccess, erro
 	return i.NamespaceContainer.GetArtifact(i, vers)
 }
 
-func (i *namespaceAccessImpl) AddArtifact(artifact cpi.Artifact, tags ...string) (access accessio.BlobAccess, err error) {
+func (i *namespaceAccessImpl) AddArtifact(artifact cpi.Artifact, tags ...string) (access blobaccess.BlobAccess, err error) {
 	return i.NamespaceContainer.AddArtifact(artifact, tags...)
 }
 
diff --git a/pkg/contexts/oci/internal/repository.go b/pkg/contexts/oci/internal/repository.go
index 83ebf964fe..28bc73ab68 100644
--- a/pkg/contexts/oci/internal/repository.go
+++ b/pkg/contexts/oci/internal/repository.go
@@ -9,7 +9,7 @@ import (
 
 	"github.com/opencontainers/go-digest"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/resource"
 	"github.com/open-component-model/ocm/pkg/contexts/credentials"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -42,8 +42,8 @@ type RepositorySource interface {
 }
 
 type (
-	BlobAccess = accessio.BlobAccess
-	DataAccess = accessio.DataAccess
+	BlobAccess = blobaccess.BlobAccess
+	DataAccess = blobaccess.DataAccess
 )
 
 type BlobSource interface {
diff --git a/pkg/contexts/oci/ociutils/helm/art_test.go b/pkg/contexts/oci/ociutils/helm/art_test.go
index 960ce945f9..756ea2f299 100644
--- a/pkg/contexts/oci/ociutils/helm/art_test.go
+++ b/pkg/contexts/oci/ociutils/helm/art_test.go
@@ -19,7 +19,7 @@ import (
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chartutil"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/ociutils/helm"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/artifactset"
@@ -59,7 +59,7 @@ func norm(chart *chart.Chart) *chart.Chart {
 	return chart
 }
 
-func get(blob accessio.DataAccess, expected []byte) []byte {
+func get(blob blobaccess.DataAccess, expected []byte) []byte {
 	data, err := blob.Get()
 	ExpectWithOffset(1, err).To(Succeed())
 	if expected != nil {
diff --git a/pkg/contexts/oci/ociutils/info.go b/pkg/contexts/oci/ociutils/info.go
index 3ca519e985..637ccd1301 100644
--- a/pkg/contexts/oci/ociutils/info.go
+++ b/pkg/contexts/oci/ociutils/info.go
@@ -15,7 +15,6 @@ import (
 	"sigs.k8s.io/yaml"
 
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/compression"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -106,7 +105,7 @@ type LayerInfo struct {
 	Content     interface{} `json:"content,omitempty"`
 }
 
-func GetLayerInfo(blob accessio.BlobAccess, layerFiles bool) *LayerInfo {
+func GetLayerInfo(blob blobaccess.BlobAccess, layerFiles bool) *LayerInfo {
 	info := &LayerInfo{}
 
 	if mime.IsJSON(blob.MimeType()) {
diff --git a/pkg/contexts/oci/ociutils/print.go b/pkg/contexts/oci/ociutils/print.go
index cafa240ca3..f0ad1c29fd 100644
--- a/pkg/contexts/oci/ociutils/print.go
+++ b/pkg/contexts/oci/ociutils/print.go
@@ -12,7 +12,6 @@ import (
 	"strings"
 
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/compression"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -72,7 +71,7 @@ func PrintManifest(pr common.Printer, m cpi.ManifestAccess, listFiles bool) {
 	}
 }
 
-func PrintLayer(pr common.Printer, blob accessio.BlobAccess, listFiles bool) {
+func PrintLayer(pr common.Printer, blob blobaccess.BlobAccess, listFiles bool) {
 	reader, err := blob.Reader()
 	if err != nil {
 		pr.Printf("cannot read blob: %s\n", err.Error())
diff --git a/pkg/contexts/oci/repositories/artifactset/artifactset.go b/pkg/contexts/oci/repositories/artifactset/artifactset.go
index 4fc353aeb2..d01fefd0d2 100644
--- a/pkg/contexts/oci/repositories/artifactset/artifactset.go
+++ b/pkg/contexts/oci/repositories/artifactset/artifactset.go
@@ -11,6 +11,7 @@ import (
 	"github.com/opencontainers/go-digest"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
@@ -59,7 +60,7 @@ func (a *ArtifactSet) Close() error { // why???
 	return a.NamespaceAccess.Close()
 }
 
-func (a *ArtifactSet) GetBlobData(digest digest.Digest) (int64, accessio.DataAccess, error) {
+func (a *ArtifactSet) GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess, error) {
 	return a.container.GetBlobData(digest)
 }
 
@@ -396,7 +397,7 @@ func (a *namespaceContainer) AnnotateArtifact(digest digest.Digest, name, value
 	return errors.ErrUnknown(cpi.KIND_OCIARTIFACT, digest.String())
 }
 
-func (a *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access accessio.BlobAccess, err error) {
+func (a *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access blobaccess.BlobAccess, err error) {
 	blob, err := a.AddPlatformArtifact(artifact, nil)
 	if err != nil {
 		return nil, err
@@ -404,9 +405,9 @@ func (a *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string)
 	return blob, a.AddTags(blob.Digest(), tags...)
 }
 
-func (a *namespaceContainer) AddPlatformArtifact(artifact cpi.Artifact, platform *artdesc.Platform) (access accessio.BlobAccess, err error) {
+func (a *namespaceContainer) AddPlatformArtifact(artifact cpi.Artifact, platform *artdesc.Platform) (access blobaccess.BlobAccess, err error) {
 	if a.IsClosed() {
-		return nil, accessio.ErrClosed
+		return nil, blobaccess.ErrClosed
 	}
 	if a.IsReadOnly() {
 		return nil, accessio.ErrReadOnly
diff --git a/pkg/contexts/oci/repositories/artifactset/format.go b/pkg/contexts/oci/repositories/artifactset/format.go
index 6aa844a7f2..4ce19339b2 100644
--- a/pkg/contexts/oci/repositories/artifactset/format.go
+++ b/pkg/contexts/oci/repositories/artifactset/format.go
@@ -10,6 +10,7 @@ import (
 	"github.com/mandelsoft/vfs/pkg/vfs"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/errors"
 	mime2 "github.com/open-component-model/ocm/pkg/mime"
@@ -201,11 +202,11 @@ func SupportedFormats() []accessio.FileFormat {
 
 ////////////////////////////////////////////////////////////////////////////////
 
-func OpenFromBlob(acc accessobj.AccessMode, blob accessio.BlobAccess, opts ...accessio.Option) (*Object, error) {
+func OpenFromBlob(acc accessobj.AccessMode, blob blobaccess.BlobAccess, opts ...accessio.Option) (*Object, error) {
 	return OpenFromDataAccess(acc, blob.MimeType(), blob, opts...)
 }
 
-func OpenFromDataAccess(acc accessobj.AccessMode, mime string, data accessio.DataAccess, opts ...accessio.Option) (*Object, error) {
+func OpenFromDataAccess(acc accessobj.AccessMode, mime string, data blobaccess.DataAccess, opts ...accessio.Option) (*Object, error) {
 	o, err := accessio.AccessOptions(nil, opts...)
 	if err != nil {
 		return nil, err
diff --git a/pkg/contexts/oci/repositories/artifactset/utils_synthesis.go b/pkg/contexts/oci/repositories/artifactset/utils_synthesis.go
index 777354987e..6ba5aa8ad1 100644
--- a/pkg/contexts/oci/repositories/artifactset/utils_synthesis.go
+++ b/pkg/contexts/oci/repositories/artifactset/utils_synthesis.go
@@ -24,7 +24,7 @@ import (
 const SynthesizedBlobFormat = "+tar+gzip"
 
 type ArtifactBlob interface {
-	accessio.BlobAccess
+	blobaccess.BlobAccess
 }
 
 type Producer func(set *ArtifactSet) (string, error)
@@ -115,7 +115,7 @@ type ArtifactFactory func(set *ArtifactSet) (digest.Digest, string, error)
 type ArtifactIterator func() (ArtifactFactory, bool, error)
 
 // ArtifactFeedback is called after an artifact has successfully be added.
-type ArtifactFeedback func(blob accessio.BlobAccess, art cpi.ArtifactAccess) error
+type ArtifactFeedback func(blob blobaccess.BlobAccess, art cpi.ArtifactAccess) error
 
 // ArtifactTransferCreator provides an ArtifactFactory transferring the given artifact.
 func ArtifactTransferCreator(art cpi.ArtifactAccess, finalizer *Finalizer, feedback ...ArtifactFeedback) ArtifactFactory {
diff --git a/pkg/contexts/oci/repositories/ctf/format.go b/pkg/contexts/oci/repositories/ctf/format.go
index f0a08d9747..2648bc6f1a 100644
--- a/pkg/contexts/oci/repositories/ctf/format.go
+++ b/pkg/contexts/oci/repositories/ctf/format.go
@@ -12,6 +12,7 @@ import (
 	"github.com/mandelsoft/vfs/pkg/vfs"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/ctf/format"
@@ -93,7 +94,7 @@ func SupportedFormats() []accessio.FileFormat {
 
 ////////////////////////////////////////////////////////////////////////////////
 
-func OpenFromBlob(ctx cpi.ContextProvider, acc accessobj.AccessMode, blob accessio.BlobAccess, opts ...accessio.Option) (*Object, error) {
+func OpenFromBlob(ctx cpi.ContextProvider, acc accessobj.AccessMode, blob blobaccess.BlobAccess, opts ...accessio.Option) (*Object, error) {
 	o, err := accessio.AccessOptions(nil, opts...)
 	if err != nil {
 		return nil, err
diff --git a/pkg/contexts/oci/repositories/ctf/namespace.go b/pkg/contexts/oci/repositories/ctf/namespace.go
index ea8b04573c..b7a0efe158 100644
--- a/pkg/contexts/oci/repositories/ctf/namespace.go
+++ b/pkg/contexts/oci/repositories/ctf/namespace.go
@@ -8,6 +8,7 @@ import (
 	"github.com/opencontainers/go-digest"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi/support"
@@ -76,7 +77,7 @@ func (n *namespaceContainer) HasArtifact(vers string) (bool, error) {
 	return meta != nil, nil
 }
 
-func (n *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access accessio.BlobAccess, err error) {
+func (n *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access blobaccess.BlobAccess, err error) {
 	n.repo.base.Lock()
 	defer n.repo.base.Unlock()
 
diff --git a/pkg/contexts/oci/repositories/ctf/synthesis_test.go b/pkg/contexts/oci/repositories/ctf/synthesis_test.go
index d76209c00b..e32a79296f 100644
--- a/pkg/contexts/oci/repositories/ctf/synthesis_test.go
+++ b/pkg/contexts/oci/repositories/ctf/synthesis_test.go
@@ -32,7 +32,7 @@ import (
 )
 
 type DummyMethod struct {
-	accessio.BlobAccess
+	blobaccess.BlobAccess
 }
 
 var _ ocm.AccessMethod = (*DummyMethod)(nil)
@@ -46,7 +46,7 @@ func (d *DummyMethod) AccessSpec() cpi.AccessSpec {
 	return nil
 }
 
-func CheckBlob(blob accessio.BlobAccess) oci.NamespaceAccess {
+func CheckBlob(blob blobaccess.BlobAccess) oci.NamespaceAccess {
 	set := Must(artifactset.OpenFromBlob(accessobj.ACC_READONLY, blob))
 	defer func() {
 		if set != nil {
diff --git a/pkg/contexts/oci/repositories/docker/convert.go b/pkg/contexts/oci/repositories/docker/convert.go
index af1075401a..553f871319 100644
--- a/pkg/contexts/oci/repositories/docker/convert.go
+++ b/pkg/contexts/oci/repositories/docker/convert.go
@@ -74,7 +74,7 @@ func (a *artBlobCache) Unref() error {
 	return nil
 }
 
-func (a *artBlobCache) GetBlobData(digest digest.Digest) (int64, accessio.DataAccess, error) {
+func (a *artBlobCache) GetBlobData(digest digest.Digest) (int64, blobaccess.DataAccess, error) {
 	blob, err := a.access.GetBlob(digest)
 	if err != nil {
 		return -1, nil, err
@@ -82,7 +82,7 @@ func (a *artBlobCache) GetBlobData(digest digest.Digest) (int64, accessio.DataAc
 	return blob.Size(), blob, err
 }
 
-func (a *artBlobCache) AddBlob(blob accessio.BlobAccess) (int64, digest.Digest, error) {
+func (a *artBlobCache) AddBlob(blob blobaccess.BlobAccess) (int64, digest.Digest, error) {
 	err := a.access.AddBlob(blob)
 	if err != nil {
 		return -1, "", err
diff --git a/pkg/contexts/oci/repositories/docker/namespace.go b/pkg/contexts/oci/repositories/docker/namespace.go
index df493f1c26..1aaedb40e3 100644
--- a/pkg/contexts/oci/repositories/docker/namespace.go
+++ b/pkg/contexts/oci/repositories/docker/namespace.go
@@ -216,7 +216,7 @@ func (n *namespaceHandler) HasArtifact(vers string) (bool, error) {
 	return false, nil
 }
 
-func (n *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access accessio.BlobAccess, err error) {
+func (n *namespaceContainer) AddArtifact(artifact cpi.Artifact, tags ...string) (access blobaccess.BlobAccess, err error) {
 	tag := "latest"
 	if len(tags) > 0 {
 		tag = tags[0]
diff --git a/pkg/contexts/oci/repositories/ocireg/utils.go b/pkg/contexts/oci/repositories/ocireg/utils.go
index 01538c6b02..0a00b9460c 100644
--- a/pkg/contexts/oci/repositories/ocireg/utils.go
+++ b/pkg/contexts/oci/repositories/ocireg/utils.go
@@ -17,6 +17,7 @@ import (
 	"github.com/sirupsen/logrus"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
 	"github.com/open-component-model/ocm/pkg/docker/resolve"
@@ -84,12 +85,12 @@ func readAll(reader io.ReadCloser, err error) ([]byte, error) {
 	return data, nil
 }
 
-func push(ctx context.Context, p resolve.Pusher, blob accessio.BlobAccess) error {
+func push(ctx context.Context, p resolve.Pusher, blob blobaccess.BlobAccess) error {
 	desc := *artdesc.DefaultBlobDescriptor(blob)
 	return pushData(ctx, p, desc, blob)
 }
 
-func pushData(ctx context.Context, p resolve.Pusher, desc artdesc.Descriptor, data accessio.DataAccess) error {
+func pushData(ctx context.Context, p resolve.Pusher, desc artdesc.Descriptor, data blobaccess.DataAccess) error {
 	key := remotes.MakeRefKey(ctx, desc)
 	if desc.Size == 0 {
 		desc.Size = -1
diff --git a/pkg/contexts/ocm/accessmethods/github/method.go b/pkg/contexts/ocm/accessmethods/github/method.go
index 88766fa4b4..0bda080218 100644
--- a/pkg/contexts/ocm/accessmethods/github/method.go
+++ b/pkg/contexts/ocm/accessmethods/github/method.go
@@ -18,6 +18,7 @@ import (
 	"golang.org/x/oauth2"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/downloader"
 	hd "github.com/open-component-model/ocm/pkg/common/accessio/downloader/http"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
@@ -150,7 +151,7 @@ type RepositoryService interface {
 
 type accessMethod struct {
 	lock   sync.Mutex
-	access accessio.BlobAccess
+	access blobaccess.BlobAccess
 
 	compvers          cpi.ComponentVersionAccess
 	spec              *AccessSpec
diff --git a/pkg/contexts/ocm/accessmethods/helm/method.go b/pkg/contexts/ocm/accessmethods/helm/method.go
index 8cfe696e3c..b2caad6f59 100644
--- a/pkg/contexts/ocm/accessmethods/helm/method.go
+++ b/pkg/contexts/ocm/accessmethods/helm/method.go
@@ -12,7 +12,6 @@ import (
 	"sync"
 
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/cpi"
 	"github.com/open-component-model/ocm/pkg/errors"
@@ -107,7 +106,7 @@ func (s *AccessSpec) GetChartName() string {
 
 type accessMethod struct {
 	lock sync.Mutex
-	blob accessio.BlobAccess
+	blob blobaccess.BlobAccess
 	comp cpi.ComponentVersionAccess
 	spec *AccessSpec
 
diff --git a/pkg/contexts/ocm/accessmethods/npm/method.go b/pkg/contexts/ocm/accessmethods/npm/method.go
index 80ab7ae1dd..0643c7f0f6 100644
--- a/pkg/contexts/ocm/accessmethods/npm/method.go
+++ b/pkg/contexts/ocm/accessmethods/npm/method.go
@@ -122,7 +122,7 @@ func (a *AccessSpec) getPackageMeta(ctx cpi.Context) (*meta, error) {
 ////////////////////////////////////////////////////////////////////////////////
 
 func newMethod(c cpi.ComponentVersionAccess, a *AccessSpec) (cpi.AccessMethod, error) {
-	factory := func() (accessio.BlobAccess, error) {
+	factory := func() (blobaccess.BlobAccess, error) {
 		meta, err := a.getPackageMeta(c.GetContext())
 		if err != nil {
 			return nil, err
diff --git a/pkg/contexts/ocm/accessmethods/plugin/method.go b/pkg/contexts/ocm/accessmethods/plugin/method.go
index b6f1e4071f..c89e3b6166 100644
--- a/pkg/contexts/ocm/accessmethods/plugin/method.go
+++ b/pkg/contexts/ocm/accessmethods/plugin/method.go
@@ -9,7 +9,6 @@ import (
 	"io"
 	"sync"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm"
@@ -66,7 +65,7 @@ func (s *AccessSpec) Handler() *PluginHandler {
 
 type accessMethod struct {
 	lock sync.Mutex
-	blob accessio.BlobAccess
+	blob blobaccess.BlobAccess
 	ctx  ocm.Context
 
 	handler *PluginHandler
diff --git a/pkg/contexts/ocm/accessmethods/s3/method.go b/pkg/contexts/ocm/accessmethods/s3/method.go
index 67a640a9ef..089f732287 100644
--- a/pkg/contexts/ocm/accessmethods/s3/method.go
+++ b/pkg/contexts/ocm/accessmethods/s3/method.go
@@ -10,6 +10,7 @@ import (
 	. "github.com/open-component-model/ocm/pkg/exception"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/downloader"
 	"github.com/open-component-model/ocm/pkg/common/accessio/downloader/s3"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
@@ -109,7 +110,7 @@ func (a *AccessSpec) GetInexpensiveContentVersionIdentity(c cpi.ComponentVersion
 ////////////////////////////////////////////////////////////////////////////////
 
 type accessMethod struct {
-	accessio.BlobAccess
+	blobaccess.BlobAccess
 
 	comp cpi.ComponentVersionAccess
 	spec *AccessSpec
diff --git a/pkg/contexts/ocm/blobhandler/handlers/generic/ocirepo/blobhandler.go b/pkg/contexts/ocm/blobhandler/handlers/generic/ocirepo/blobhandler.go
index 91d871f176..8a33597c07 100644
--- a/pkg/contexts/ocm/blobhandler/handlers/generic/ocirepo/blobhandler.go
+++ b/pkg/contexts/ocm/blobhandler/handlers/generic/ocirepo/blobhandler.go
@@ -9,7 +9,7 @@ import (
 	"path"
 	"strings"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -71,7 +71,7 @@ func (b *artifactHandler) StoreBlob(blob cpi.BlobAccess, artType, hint string, g
 		"hint", hint,
 		"target", string(target),
 	}
-	if m, ok := blob.(accessio.AnnotatedBlobAccess[cpi.AccessMethod]); ok {
+	if m, ok := blob.(blobaccess.AnnotatedBlobAccess[cpi.AccessMethod]); ok {
 		// prepare for optimized point to point implementation
 		cpi.BlobHandlerLogger(ctx.GetContext()).Debug("oci generic artifact handler with ocm access source",
 			generics.AppendedSlice[any](values, "sourcetype", m.Source().AccessSpec().GetType())...,
diff --git a/pkg/contexts/ocm/blobhandler/handlers/oci/ocirepo/blobhandler.go b/pkg/contexts/ocm/blobhandler/handlers/oci/ocirepo/blobhandler.go
index 4061d9f930..4a18cf643b 100644
--- a/pkg/contexts/ocm/blobhandler/handlers/oci/ocirepo/blobhandler.go
+++ b/pkg/contexts/ocm/blobhandler/handlers/oci/ocirepo/blobhandler.go
@@ -13,7 +13,7 @@ import (
 
 	"github.com/opencontainers/go-digest"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -87,7 +87,7 @@ func (b *blobHandler) StoreBlob(blob cpi.BlobAccess, artType, hint string, globa
 		"mediatype", blob.MimeType(),
 		"hint", hint,
 	}
-	if m, ok := blob.(accessio.AnnotatedBlobAccess[cpi.AccessMethodView]); ok {
+	if m, ok := blob.(blobaccess.AnnotatedBlobAccess[cpi.AccessMethodView]); ok {
 		cpi.BlobHandlerLogger(ctx.GetContext()).Debug("oci blob handler with ocm access source",
 			generics.AppendedSlice[any](values, "sourcetype", m.Source().AccessSpec().GetType())...,
 		)
@@ -150,7 +150,7 @@ func (b *artifactHandler) StoreBlob(blob cpi.BlobAccess, artType, hint string, g
 
 	keep := keepblobattr.Get(ctx.GetContext())
 
-	if m, ok := blob.(accessio.AnnotatedBlobAccess[cpi.AccessMethodView]); ok {
+	if m, ok := blob.(blobaccess.AnnotatedBlobAccess[cpi.AccessMethodView]); ok {
 		// prepare for optimized point to point implementation
 		log.Debug("oci artifact handler with ocm access source",
 			generics.AppendedSlice[any](values, "sourcetype", m.Source().AccessSpec().GetType())...,
diff --git a/pkg/contexts/ocm/blobhandler/handlers/ocm/ctx.go b/pkg/contexts/ocm/blobhandler/handlers/ocm/ctx.go
index 201478d1d9..a2fd058892 100644
--- a/pkg/contexts/ocm/blobhandler/handlers/ocm/ctx.go
+++ b/pkg/contexts/ocm/blobhandler/handlers/ocm/ctx.go
@@ -5,13 +5,13 @@
 package ocm
 
 import (
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/cpi"
 	"github.com/open-component-model/ocm/pkg/utils"
 )
 
 type BlobSink interface {
-	AddBlob(blob accessio.BlobAccess) (string, error)
+	AddBlob(blob blobaccess.BlobAccess) (string, error)
 }
 
 // StorageContext is the context information passed for Blobhandler
@@ -35,6 +35,6 @@ func New(repo cpi.Repository, vers cpi.ComponentVersionAccess, access BlobSink,
 	}
 }
 
-func (c *DefaultStorageContext) AddBlob(blob accessio.BlobAccess) (string, error) {
+func (c *DefaultStorageContext) AddBlob(blob blobaccess.BlobAccess) (string, error) {
 	return c.Sink.AddBlob(blob)
 }
diff --git a/pkg/contexts/ocm/cpi/method.go b/pkg/contexts/ocm/cpi/method.go
index 1a809f21a4..6c6874dc66 100644
--- a/pkg/contexts/ocm/cpi/method.go
+++ b/pkg/contexts/ocm/cpi/method.go
@@ -8,14 +8,14 @@ import (
 	"io"
 	"sync"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 )
 
 ////////////////////////////////////////////////////////////////////////////////
 
 type DefaultAccessMethod struct {
 	lock   sync.Mutex
-	access accessio.BlobAccess
+	access blobaccess.BlobAccess
 
 	factory BlobAccessFactory
 	comp    ComponentVersionAccess
@@ -36,7 +36,7 @@ func NewDefaultMethod(c ComponentVersionAccess, a AccessSpec, mime string, fac B
 	}
 }
 
-func (m *DefaultAccessMethod) getAccess() (accessio.BlobAccess, error) {
+func (m *DefaultAccessMethod) getAccess() (blobaccess.BlobAccess, error) {
 	m.lock.Lock()
 	defer m.lock.Unlock()
 	if m.access == nil {
diff --git a/pkg/contexts/ocm/cpi/view.go b/pkg/contexts/ocm/cpi/view.go
index 1b90e47522..933f79fc7a 100644
--- a/pkg/contexts/ocm/cpi/view.go
+++ b/pkg/contexts/ocm/cpi/view.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/common"
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessio/resource"
 	"github.com/open-component-model/ocm/pkg/contexts/credentials"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
@@ -243,10 +244,14 @@ func (c *componentAccessView) AddVersion(acc ComponentVersionAccess) error {
 		return errors.ErrInvalid("component name", acc.GetName())
 	}
 	return c.Execute(func() error {
-		return c.impl.AddVersion(acc)
+		return c.addVersion(acc)
 	})
 }
 
+func (c *componentAccessView) addVersion(acc ComponentVersionAccess) error {
+	return c.impl.AddVersion(acc)
+}
+
 func (c *componentAccessView) NewVersion(version string, overrides ...bool) (acc ComponentVersionAccess, err error) {
 	err = c.Execute(func() error {
 		if c.impl.IsReadOnly() {
@@ -304,7 +309,7 @@ type ComponentVersionAccessImpl interface {
 	GetBlobCache() BlobCache
 }
 
-type BlobCacheEntry = accessio.BlobAccess
+type BlobCacheEntry = blobaccess.BlobAccess
 
 type BlobCache interface {
 	// AddBlobFor stores blobs for added blobs not yet accessible
@@ -602,7 +607,7 @@ func (c *componentVersionAccessView) SetSourceBlob(meta *SourceMeta, blob BlobAc
 
 type fakeMethod struct {
 	AccessMethod
-	blob accessio.BlobAccess
+	blob blobaccess.BlobAccess
 }
 
 func (f *fakeMethod) Reader() (io.ReadCloser, error) {
diff --git a/pkg/contexts/ocm/download/handlers/blueprint/extractor.go b/pkg/contexts/ocm/download/handlers/blueprint/extractor.go
index ce47066a9e..a27b9e45f2 100644
--- a/pkg/contexts/ocm/download/handlers/blueprint/extractor.go
+++ b/pkg/contexts/ocm/download/handlers/blueprint/extractor.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/common"
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/common/compression"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/repositories/artifactset"
@@ -24,7 +25,7 @@ const (
 	BLUEPRINT_MIMETYPE_COMPRESSED        = "application/vnd.gardener.landscaper.blueprint.v1+tar+gzip"
 )
 
-func ExtractArchive(pr common.Printer, _ *Handler, access accessio.DataAccess, path string, fs vfs.FileSystem) (_ bool, rerr error) {
+func ExtractArchive(pr common.Printer, _ *Handler, access blobaccess.DataAccess, path string, fs vfs.FileSystem) (_ bool, rerr error) {
 	var finalize finalizer.Finalizer
 	defer finalize.FinalizeWithErrorPropagationf(&rerr, "extracting archived (and compressed) blueprint")
 
@@ -57,7 +58,7 @@ func ExtractArchive(pr common.Printer, _ *Handler, access accessio.DataAccess, p
 	return true, nil
 }
 
-func ExtractArtifact(pr common.Printer, handler *Handler, access accessio.DataAccess, path string, fs vfs.FileSystem) (_ bool, rerr error) {
+func ExtractArtifact(pr common.Printer, handler *Handler, access blobaccess.DataAccess, path string, fs vfs.FileSystem) (_ bool, rerr error) {
 	var finalize finalizer.Finalizer
 	defer finalize.FinalizeWithErrorPropagationf(&rerr, "extracting oci artifact containing a blueprint")
 
diff --git a/pkg/contexts/ocm/download/handlers/blueprint/handler.go b/pkg/contexts/ocm/download/handlers/blueprint/handler.go
index 70190322f6..18cd11a51a 100644
--- a/pkg/contexts/ocm/download/handlers/blueprint/handler.go
+++ b/pkg/contexts/ocm/download/handlers/blueprint/handler.go
@@ -8,7 +8,7 @@ import (
 	"github.com/mandelsoft/vfs/pkg/vfs"
 
 	"github.com/open-component-model/ocm/pkg/common"
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/cpi"
 	registry "github.com/open-component-model/ocm/pkg/contexts/ocm/download"
@@ -25,7 +25,7 @@ const (
 	CONFIG_MIME_TYPE = "application/vnd.gardener.landscaper.blueprint.config.v1"
 )
 
-type Extractor func(pr common.Printer, handler *Handler, access accessio.DataAccess, path string, fs vfs.FileSystem) (bool, error)
+type Extractor func(pr common.Printer, handler *Handler, access blobaccess.DataAccess, path string, fs vfs.FileSystem) (bool, error)
 
 var (
 	supportedArtifactTypes    []string
diff --git a/pkg/contexts/ocm/download/handlers/helm/handler.go b/pkg/contexts/ocm/download/handlers/helm/handler.go
index dc985bd2c4..fb56b0ed8a 100644
--- a/pkg/contexts/ocm/download/handlers/helm/handler.go
+++ b/pkg/contexts/ocm/download/handlers/helm/handler.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/common"
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -107,7 +108,7 @@ func download(p common.Printer, art oci.ArtifactAccess, path string, fs vfs.File
 	return chart, prov, err
 }
 
-func write(p common.Printer, blob accessio.BlobAccess, path string, fs vfs.FileSystem) (err error) {
+func write(p common.Printer, blob blobaccess.BlobAccess, path string, fs vfs.FileSystem) (err error) {
 	var finalize finalizer.Finalizer
 	defer finalize.FinalizeWithErrorPropagation(&err)
 
diff --git a/pkg/contexts/ocm/interface.go b/pkg/contexts/ocm/interface.go
index 1251daf6e7..98f5bb340f 100644
--- a/pkg/contexts/ocm/interface.go
+++ b/pkg/contexts/ocm/interface.go
@@ -8,7 +8,7 @@ import (
 	"context"
 	"io"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc"
 	metav1 "github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc/meta/v1"
 	ocm "github.com/open-component-model/ocm/pkg/contexts/ocm/context"
@@ -189,7 +189,7 @@ func SkipDigest(flag ...bool) ModificationOption {
 
 type AccessMethodView = cpi.AccessMethodView
 
-func BlobAccessForAccessMethod(m AccessMethodView) (accessio.AnnotatedBlobAccess[AccessMethodView], error) {
+func BlobAccessForAccessMethod(m AccessMethodView) (blobaccess.AnnotatedBlobAccess[AccessMethodView], error) {
 	return cpi.BlobAccessForAccessMethod(m)
 }
 
diff --git a/pkg/contexts/ocm/repositories/comparch/accessmethod_localfs.go b/pkg/contexts/ocm/repositories/comparch/accessmethod_localfs.go
index 2115116631..007c2796cc 100644
--- a/pkg/contexts/ocm/repositories/comparch/accessmethod_localfs.go
+++ b/pkg/contexts/ocm/repositories/comparch/accessmethod_localfs.go
@@ -22,7 +22,7 @@ type localFilesystemBlobAccessMethod struct {
 	closed     bool
 	spec       *localblob.AccessSpec
 	base       support.ComponentVersionContainer
-	blobAccess accessio.DataAccess
+	blobAccess blobaccess.DataAccess
 }
 
 var _ cpi.AccessMethod = (*localFilesystemBlobAccessMethod)(nil)
diff --git a/pkg/contexts/ocm/repositories/comparch/componentarchive.go b/pkg/contexts/ocm/repositories/comparch/componentarchive.go
index 52b33157ad..5d6abba150 100644
--- a/pkg/contexts/ocm/repositories/comparch/componentarchive.go
+++ b/pkg/contexts/ocm/repositories/comparch/componentarchive.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/open-component-model/ocm/pkg/common"
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/common/accessobj"
 	ocicpi "github.com/open-component-model/ocm/pkg/contexts/oci/cpi"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/accessmethods/localblob"
@@ -155,7 +156,7 @@ type BlobSink struct {
 	Sink ocicpi.BlobSink
 }
 
-func (s *BlobSink) AddBlob(blob accessio.BlobAccess) (string, error) {
+func (s *BlobSink) AddBlob(blob blobaccess.BlobAccess) (string, error) {
 	err := s.Sink.AddBlob(blob)
 	if err != nil {
 		return "", err
diff --git a/pkg/contexts/ocm/repositories/genericocireg/accessmethod_localblob.go b/pkg/contexts/ocm/repositories/genericocireg/accessmethod_localblob.go
index 5cd638c088..63c4210ede 100644
--- a/pkg/contexts/ocm/repositories/genericocireg/accessmethod_localblob.go
+++ b/pkg/contexts/ocm/repositories/genericocireg/accessmethod_localblob.go
@@ -10,7 +10,6 @@ import (
 
 	"github.com/opencontainers/go-digest"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
@@ -21,7 +20,7 @@ import (
 
 type localBlobAccessMethod struct {
 	lock      sync.Mutex
-	data      accessio.DataAccess
+	data      blobaccess.DataAccess
 	spec      *localblob.AccessSpec
 	namespace oci.NamespaceAccess
 	artifact  oci.ArtifactAccess
diff --git a/pkg/contexts/ocm/repositories/virtual/accessmethod_localblob.go b/pkg/contexts/ocm/repositories/virtual/accessmethod_localblob.go
index bcbac118ad..8f10b676fb 100644
--- a/pkg/contexts/ocm/repositories/virtual/accessmethod_localblob.go
+++ b/pkg/contexts/ocm/repositories/virtual/accessmethod_localblob.go
@@ -8,7 +8,6 @@ import (
 	"io"
 	"sync"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/accessmethods/localblob"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/cpi"
@@ -16,7 +15,7 @@ import (
 
 type localBlobAccessMethod struct {
 	lock   sync.Mutex
-	data   accessio.DataAccess
+	data   blobaccess.DataAccess
 	spec   *localblob.AccessSpec
 	access VersionAccess
 }
diff --git a/pkg/env/builder/builder.go b/pkg/env/builder/builder.go
index 1bca3bbec1..12ef167a1f 100644
--- a/pkg/env/builder/builder.go
+++ b/pkg/env/builder/builder.go
@@ -10,6 +10,7 @@ import (
 	"github.com/onsi/ginkgo/v2"
 
 	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc"
@@ -59,7 +60,7 @@ type state struct {
 	ocm_acc     *compdesc.AccessSpec
 	ocm_modopts *ocm.ModificationOptions
 
-	blob *accessio.BlobAccess
+	blob *blobaccess.BlobAccess
 	hint *string
 
 	oci_repo          oci.Repository
diff --git a/pkg/env/builder/oci_config.go b/pkg/env/builder/oci_config.go
index 3adee2abbb..714bb210bf 100644
--- a/pkg/env/builder/oci_config.go
+++ b/pkg/env/builder/oci_config.go
@@ -5,7 +5,7 @@
 package builder
 
 import (
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
@@ -14,7 +14,7 @@ const T_OCICONFIG = "oci config"
 
 type ociConfig struct {
 	base
-	blob accessio.BlobAccess
+	blob blobaccess.BlobAccess
 }
 
 func (r *ociConfig) Type() string {
diff --git a/pkg/env/builder/oci_layer.go b/pkg/env/builder/oci_layer.go
index db2d45b7e8..7e9bc452cd 100644
--- a/pkg/env/builder/oci_layer.go
+++ b/pkg/env/builder/oci_layer.go
@@ -5,7 +5,7 @@
 package builder
 
 import (
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/oci/artdesc"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
@@ -14,7 +14,7 @@ const T_OCILAYER = "oci layer"
 
 type ociLayer struct {
 	base
-	blob accessio.BlobAccess
+	blob blobaccess.BlobAccess
 }
 
 func (r *ociLayer) Type() string {
diff --git a/pkg/env/builder/ocm_resource.go b/pkg/env/builder/ocm_resource.go
index b073c94532..1bf84acd16 100644
--- a/pkg/env/builder/ocm_resource.go
+++ b/pkg/env/builder/ocm_resource.go
@@ -5,7 +5,7 @@
 package builder
 
 import (
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc"
 	metav1 "github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc/meta/v1"
@@ -18,7 +18,7 @@ type ocmResource struct {
 	orig   ocm.AccessSpec
 	meta   compdesc.ResourceMeta
 	access compdesc.AccessSpec
-	blob   accessio.BlobAccess
+	blob   blobaccess.BlobAccess
 	opts   ocm.ModificationOptions
 	hint   string
 }
diff --git a/pkg/env/builder/ocm_source.go b/pkg/env/builder/ocm_source.go
index 4e15aec3c8..e949d96aeb 100644
--- a/pkg/env/builder/ocm_source.go
+++ b/pkg/env/builder/ocm_source.go
@@ -5,7 +5,7 @@
 package builder
 
 import (
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/contexts/ocm/compdesc"
 	"github.com/open-component-model/ocm/pkg/errors"
 )
@@ -15,7 +15,7 @@ type ocmSource struct {
 
 	meta   compdesc.SourceMeta
 	access compdesc.AccessSpec
-	blob   accessio.BlobAccess
+	blob   blobaccess.BlobAccess
 }
 
 const T_OCMSOURCE = "source"
diff --git a/pkg/helm/loader/access.go b/pkg/helm/loader/access.go
index 73920e26ea..c5f2939183 100644
--- a/pkg/helm/loader/access.go
+++ b/pkg/helm/loader/access.go
@@ -8,7 +8,7 @@ import (
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chart/loader"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/helm"
 )
 
@@ -24,11 +24,11 @@ func (l *accessLoader) Close() error {
 	return l.access.Close()
 }
 
-func (l *accessLoader) ChartArchive() (accessio.BlobAccess, error) {
+func (l *accessLoader) ChartArchive() (blobaccess.BlobAccess, error) {
 	return l.access.Chart()
 }
 
-func (l *accessLoader) ChartArtefactSet() (accessio.BlobAccess, error) {
+func (l *accessLoader) ChartArtefactSet() (blobaccess.BlobAccess, error) {
 	return l.access.ArtefactSet()
 }
 
diff --git a/pkg/helm/loader/loader.go b/pkg/helm/loader/loader.go
index 729a99e6e7..6da25f6d82 100644
--- a/pkg/helm/loader/loader.go
+++ b/pkg/helm/loader/loader.go
@@ -9,23 +9,23 @@ import (
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chart/loader"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
 	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
+	"github.com/open-component-model/ocm/pkg/common/iotools"
 	"github.com/open-component-model/ocm/pkg/errors"
 	"github.com/open-component-model/ocm/pkg/helm"
 	"github.com/open-component-model/ocm/pkg/utils"
 )
 
 type Loader interface {
-	ChartArchive() (accessio.BlobAccess, error)
-	ChartArtefactSet() (accessio.BlobAccess, error)
+	ChartArchive() (blobaccess.BlobAccess, error)
+	ChartArtefactSet() (blobaccess.BlobAccess, error)
 	Chart() (*chart.Chart, error)
 	Provenance() ([]byte, error)
 
 	Close() error
 }
 
-type nopCloser = accessio.NopCloser
+type nopCloser = iotools.NopCloser
 
 type vfsLoader struct {
 	nopCloser
@@ -47,7 +47,7 @@ func (l *vfsLoader) ChartArchive() (blobaccess.BlobAccess, error) {
 	return blobaccess.ForFile(helm.ChartMediaType, l.path, l.fs), nil
 }
 
-func (l *vfsLoader) ChartArtefactSet() (accessio.BlobAccess, error) {
+func (l *vfsLoader) ChartArtefactSet() (blobaccess.BlobAccess, error) {
 	return nil, nil
 }
 
diff --git a/pkg/toi/drivers/docker/driver.go b/pkg/toi/drivers/docker/driver.go
index 712aabc587..3dad635baa 100644
--- a/pkg/toi/drivers/docker/driver.go
+++ b/pkg/toi/drivers/docker/driver.go
@@ -25,7 +25,7 @@ import (
 	"github.com/docker/docker/registry"
 	"github.com/mitchellh/copystructure"
 
-	"github.com/open-component-model/ocm/pkg/common/accessio"
+	"github.com/open-component-model/ocm/pkg/common/accessio/blobaccess"
 	"github.com/open-component-model/ocm/pkg/errors"
 	"github.com/open-component-model/ocm/pkg/generics"
 	"github.com/open-component-model/ocm/pkg/toi"
@@ -444,7 +444,7 @@ func (d *Driver) fetchOutputs(ctx context.Context, container string, op *install
 // generateTar creates a tarfile containing the specified files, with the owner
 // set to the uid that the container runs as so that it is guaranteed to have
 // read access to the files we copy into the container.
-func generateTar(files map[string]accessio.BlobAccess, uid int) (io.ReadCloser, func() error, error) {
+func generateTar(files map[string]blobaccess.BlobAccess, uid int) (io.ReadCloser, func() error, error) {
 	r, w := io.Pipe()
 	tw := tar.NewWriter(w)
 	for path := range files {