diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 237b3e24..9ff085f0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,12 +11,17 @@ permissions:
 
 jobs:
   goreleaser:
+    outputs:
+      hashes: ${{ steps.binary.outputs.hashes }}
+      image: ${{ steps.image.outputs.name }}
+      digest: ${{ steps.image.outputs.digest }}
     runs-on: ubuntu-latest
 
     permissions:
       contents: write
       packages: write
       # issues: write
+      # id-token: write
 
     steps:
       - uses: actions/checkout@v4
@@ -29,7 +34,9 @@ jobs:
         with:
           go-version: stable
 
-      - uses: goreleaser/goreleaser-action@v5
+      - name: Run GoReleaser
+        id: goreleaser
+        uses: goreleaser/goreleaser-action@v5
         with:
           # either 'goreleaser' (default) or 'goreleaser-pro':
           distribution: goreleaser
@@ -37,3 +44,110 @@ jobs:
           args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Generate binary hashes
+        id: binary
+        env:
+          ARTIFACTS: "${{ steps.goreleaser.outputs.artifacts }}"
+        run: |
+          set -euo pipefail
+
+          checksum_file=$(echo "$ARTIFACTS" | jq -r '.[] | select (.type=="Checksum") | .path')
+          echo "hashes=$(cat $checksum_file | base64 -w0)" >> "$GITHUB_OUTPUT"
+
+      - name: Image digest
+        id: image
+        env:
+          ARTIFACTS: "${{ steps.goreleaser.outputs.artifacts }}"
+        run: |
+          set -euo pipefail
+          image_and_digest=$(echo "$ARTIFACTS" | jq -r '.[] | select (.type=="Docker Manifest") | .path')
+          image=$(echo "${image_and_digest}" | cut -d'@' -f1 | cut -d':' -f1)
+          digest=$(echo "${image_and_digest}" | cut -d'@' -f2)
+          echo "name=$image" >> "$GITHUB_OUTPUT"
+          echo "digest=$digest" >> "$GITHUB_OUTPUT"
+
+  binary-provenance:
+    needs: [goreleaser]
+    permissions:
+      actions: read # To read the workflow path.
+      id-token: write # To sign the provenance.
+      contents: write # To add assets to a release.
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.9.0
+    with:
+      base64-subjects: "${{ needs.goreleaser.outputs.hashes }}"
+      upload-assets: true # upload to a new release
+
+  image-provenance:
+    needs: [goreleaser]
+    permissions:
+      actions: read
+      id-token: write
+      packages: write
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@v1.9.0
+    with:
+      image: ${{ needs.goreleaser.outputs.image }}
+      digest: ${{ needs.goreleaser.outputs.digest }}
+      registry-username: ${{ github.actor }}
+    secrets:
+      registry-password: ${{ secrets.GITHUB_TOKEN }}
+
+  verification-with-slsa-verifier:
+    needs: [goreleaser, binary-provenance]
+    runs-on: ubuntu-latest
+    permissions: read-all
+    steps:
+      - name: Install the verifier
+        uses: slsa-framework/slsa-verifier/actions/installer@v2.4.0
+
+      - name: Download assets
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PROVENANCE: "${{ needs.binary-provenance.outputs.provenance-name }}"
+        run: |
+          set -euo pipefail
+          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "*.tar.gz"
+          # gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "*.zip"
+          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "$PROVENANCE"
+
+      - name: Verify assets
+        env:
+          CHECKSUMS: ${{ needs.goreleaser.outputs.hashes }}
+          PROVENANCE: "${{ needs.binary-provenance.outputs.provenance-name }}"
+        run: |
+          set -euo pipefail
+          checksums=$(echo "$CHECKSUMS" | base64 -d)
+          while read -r line; do
+              fn=$(echo $line | cut -d ' ' -f2)
+              echo "Verifying $fn"
+              slsa-verifier verify-artifact --provenance-path "$PROVENANCE" \
+                                            --source-uri "github.com/$GITHUB_REPOSITORY" \
+                                            --source-tag "$GITHUB_REF_NAME" \
+                                            "$fn"
+          done <<<"$checksums"
+
+  verification-with-cosign:
+    needs: [goreleaser, image-provenance]
+    runs-on: ubuntu-latest
+    permissions: read-all
+    steps:
+      - name: Login
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install Cosign
+        uses: sigstore/cosign-installer@v3
+
+      - name: Verify image
+        env:
+          IMAGE: ${{ needs.goreleaser.outputs.image }}
+          DIGEST: ${{ needs.goreleaser.outputs.digest }}
+        run: |
+          cosign verify-attestation \
+             --type slsaprovenance \
+             --certificate-oidc-issuer https://token.actions.githubusercontent.com \
+             --certificate-identity-regexp '^https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v[0-9]+.[0-9]+.[0-9]+$' \
+             $IMAGE@$DIGEST
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index 67eb8571..c1707894 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -35,12 +35,14 @@ builds:
 
     flags:
     - -tags=b_tiny
+    - -trimpath
 
     overrides:
     - goarch: wasm
       goos: js
       flags:
       - -tags=b_tiny,b_norepl
+      - -trimpath
 
 
 archives:
@@ -69,6 +71,8 @@ kos:  # See https://goreleaser.com/customization/ko/
     - linux/amd64
     - linux/arm64
 
+snapshot:
+  name_template: "{{ incpatch .Version }}-next"
 changelog: # See https://goreleaser.com/customization/changelog/
   use: github
   sort: asc
diff --git a/evaldo/builtins.go b/evaldo/builtins.go
index b4e9feef..515ecd02 100644
--- a/evaldo/builtins.go
+++ b/evaldo/builtins.go
@@ -4929,12 +4929,15 @@ var builtins = map[string]*env.Builtin{
 				switch secondBlock := arg1.(type) {
 				case env.Block:
 					mergedSlice := make([]env.Object, 0)
-					firtArgumentValue := s1
+					// Initially fill first block data
+					for _, v := range s1.Data {
+						mergedSlice = append(mergedSlice, env.ToRyeValue(v))
+					}
 					// If isAvailable is false then it is new value
 					isAvailable := false
 					for _, v1 := range secondBlock.Series.S {
 						isAvailable = false
-						for _, v2 := range firtArgumentValue.Data {
+						for _, v2 := range s1.Data {
 							if env.RyeToRaw(v1) == v2 {
 								isAvailable = true
 								break
@@ -4942,11 +4945,17 @@ var builtins = map[string]*env.Builtin{
 						}
 						// If new value then add in List
 						if !isAvailable {
-							s1.Data = append(s1.Data, env.RyeToRaw(v1))
+							mergedSlice = append(mergedSlice, v1)
 						}
 					}
-					mergedSlice = append(mergedSlice, s1)
-					return *env.NewBlock(*env.NewTSeries(mergedSlice))
+					// Create list of array
+					unionSlice := make([]any, 0, len(mergedSlice))
+					for _, value := range mergedSlice {
+						unionSlice = append(unionSlice, value)
+					}
+					// return List
+					return *env.NewList(unionSlice)
+
 				default:
 					return MakeArgError(ps, 2, []env.Type{env.BlockType}, "union")
 				}
@@ -4979,9 +4988,29 @@ var builtins = map[string]*env.Builtin{
 				default:
 					return MakeArgError(ps, 2, []env.Type{env.BlockType}, "intersect")
 				}
-				// TODO-FIX1 add for list
+			case env.List:
+				switch secondBlock := arg1.(type) {
+				case env.Block:
+					commonSlice := make([]env.Object, 0)
+					for _, v1 := range s1.Data {
+						for _, v2 := range secondBlock.Series.S {
+							// get matching value in both blocks
+							if env.RyeToRaw(v2) == v1 {
+								commonSlice = append(commonSlice, v2)
+							}
+						}
+					}
+					intersectSlice := make([]any, 0, len(commonSlice))
+					for _, value := range commonSlice {
+						intersectSlice = append(intersectSlice, value)
+					}
+					// return List
+					return *env.NewList(intersectSlice)
+				default:
+					return MakeArgError(ps, 2, []env.Type{env.BlockType}, "intersect")
+				}
 			default:
-				return MakeArgError(ps, 1, []env.Type{env.StringType, env.BlockType}, "intersect")
+				return MakeArgError(ps, 1, []env.Type{env.StringType, env.BlockType, env.ListType}, "intersect")
 			}
 		},
 	},
diff --git a/tests/structures.rye b/tests/structures.rye
index 62512a55..915f023f 100644
--- a/tests/structures.rye
+++ b/tests/structures.rye
@@ -213,6 +213,11 @@ section "Working with blocks and lists"
 		equal { union { 8 2 } { 1 9 } |length? } 4 ; sortorder isn't deterministic so far ... think if it should be
 		equal { union { } { 1 9 } |length? }  2
 		equal { union { } { } } { }
+
+		equal { union list { 1 2 } { 1 2 3 4 } } list { 1 2 3 4 }
+		equal { union list { 1 2 } { 1 } } list { 1 2 }
+		equal { union list { 1 2 } { } } list { 1 2 }
+		equal { union list { } { } } list { }
 	}
   	group "intersection"
 	mold\nowrap ?intersection
@@ -221,6 +226,10 @@ section "Working with blocks and lists"
 		equal { intersection { 1 3 5 6 } { 2 3 4 5 } } { 3 5 }
 		equal { intersection { } { 2 3 4  } } { }
 		equal { intersection { } { } } { }
+
+		equal { intersection list { 1 3 5 6 } { 2 3 4 5 } } list { 3 5 }
+		equal { intersection list { } { 2 3 4 } } list { }
+		equal { intersection list { } { } } list { }
 	}
 	group "unique"
 	mold\nowrap ?append!