diff --git a/.github/workflows/native-build.yml b/.github/workflows/native-build.yml
index ceae344..fe7930c 100644
--- a/.github/workflows/native-build.yml
+++ b/.github/workflows/native-build.yml
@@ -1,31 +1,27 @@
-name: Native build (cross-platform spark_frost)
+name: Native build (spark_frost from pinned Lightspark source)
 
-# Builds libspark_frost / spark_frost.dll for every supported RID directly
-# on the native CI runners (macos-latest, ubuntu-latest, windows-latest)
-# and emits a consolidated runtimes/ tree + SHA256SUMS.txt as a single
-# artifact. Run manually before a release to refresh the binaries
-# committed under src/NSpark/runtimes/.
+# Rebuilds libspark_frost from buildonspark/spark at a PINNED commit, on native runners, and
+# checks it against the committed C# bindings. The output is the runtimes/ tree to commit under
+# src/NSpark/runtimes/, plus SHA256SUMS.txt and build-provenance attestations.
 #
-# Code-signing (Authenticode / macOS notarization) is intentionally NOT
-# performed here for v0.x; the binaries ship unsigned with SHA-256
-# integrity check via runtimes/SHA256SUMS.txt and SLSA provenance on the
-# overall NuGet package. Add signing in a separate workflow once OrkLabs
-# acquires the certs.
+# - Linux RIDs build inside Amazon Linux 2023 (glibc 2.34) so the library loads on the AWS
+#   Lambda dotnet runtime and on every newer distro.
+# - The build logic lives in scripts/build-native.sh so it can be reproduced locally.
+# - Bump SPARK_SHA (and the protos re-vendored from the same commit) in one PR.
+#
+# Supported RIDs: linux-x64, linux-arm64, osx-arm64. Other RIDs are not shipped.
 
 on:
   workflow_dispatch:
-    inputs:
-      spark_ref:
-        description: buildonspark/spark git ref to build (branch, tag, or SHA)
-        required: false
-        default: main
 
 permissions:
   contents: read
 
 env:
   SPARK_REPO: buildonspark/spark
-  SPARK_REF: ${{ github.event.inputs.spark_ref || 'main' }}
+  SPARK_SHA: 0b3a32a05c9ac06cc411683551dd1f1bde9d0caa
+  AL2023_IMAGE: amazonlinux:2023@sha256:5b29412077a463b4a3a8fbc99a8cdf4b929f38a3ecc8dac10328d8f36b0099b8
+  UNIFFI_BINDGEN_CS_TAG: v0.9.2+v0.28.3
 
 jobs:
   build:
@@ -35,71 +31,75 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { rid: osx-arm64,   os: macos-latest,    target: aarch64-apple-darwin,      artifact: libspark_frost.dylib }
-          - { rid: osx-x64,     os: macos-13,        target: x86_64-apple-darwin,       artifact: libspark_frost.dylib }
-          - { rid: linux-x64,   os: ubuntu-latest,   target: x86_64-unknown-linux-gnu,  artifact: libspark_frost.so }
-          - { rid: linux-arm64, os: ubuntu-24.04-arm,target: aarch64-unknown-linux-gnu, artifact: libspark_frost.so }
-          - { rid: win-x64,     os: windows-latest,  target: x86_64-pc-windows-msvc,    artifact: spark_frost.dll }
-          - { rid: win-arm64,   os: windows-latest,  target: aarch64-pc-windows-msvc,   artifact: spark_frost.dll }
+          - { rid: linux-x64,   os: ubuntu-24.04 }
+          - { rid: linux-arm64, os: ubuntu-24.04-arm }
+          - { rid: osx-arm64,   os: macos-14 }
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v4
+        with:
+          path: nspark
+
+      - uses: actions/checkout@v4
         with:
           repository: ${{ env.SPARK_REPO }}
-          ref: ${{ env.SPARK_REF }}
+          ref: ${{ env.SPARK_SHA }}
           path: spark
 
-      - name: Setup Rust toolchain (pinned by spark/signer/rust-toolchain.toml)
+      - name: Build (Amazon Linux 2023 container)
+        if: runner.os == 'Linux'
         run: |
-          rustup show
-          rustup target add ${{ matrix.target }}
-        working-directory: spark/signer
-        shell: bash
+          docker run --rm \
+            -v "$PWD/spark:/spark:ro" -v "$PWD/nspark/scripts:/scripts:ro" -v "$PWD/out:/out" \
+            "$AL2023_IMAGE" bash /scripts/build-native.sh ${{ matrix.rid }} /spark /out
 
-      - name: Build
-        run: cargo build --release -p spark-frost-uniffi --target ${{ matrix.target }}
-        working-directory: spark/signer
+      - name: Build (native macOS)
+        if: runner.os == 'macOS'
+        run: nspark/scripts/build-native.sh ${{ matrix.rid }} spark out
 
-      - name: Strip (Linux)
-        if: runner.os == 'Linux'
-        run: strip --strip-unneeded spark/signer/target/${{ matrix.target }}/release/${{ matrix.artifact }}
-
-      - name: Hash artifact
-        shell: bash
+      - name: Bindings match the committed SparkFrostBindings.cs
+        if: matrix.rid == 'linux-x64'
         run: |
-          mkdir -p out/${{ matrix.rid }}/native
-          cp "spark/signer/target/${{ matrix.target }}/release/${{ matrix.artifact }}" \
-             "out/${{ matrix.rid }}/native/${{ matrix.artifact }}"
-          ( cd out && shasum -a 256 "${{ matrix.rid }}/native/${{ matrix.artifact }}" ) | tee out/${{ matrix.rid }}.sha256
+          cargo install uniffi-bindgen-cs --git https://github.com/NordSecurity/uniffi-bindgen-cs \
+            --tag "$UNIFFI_BINDGEN_CS_TAG" --locked --root "$RUNNER_TEMP/bindgen"
+          "$RUNNER_TEMP/bindgen/bin/uniffi-bindgen-cs" spark/signer/spark-frost-uniffi/src/spark_frost.udl \
+            --lib-file out/runtimes/linux-x64/native/libspark_frost.so --out-dir "$RUNNER_TEMP/gen"
+          diff -u nspark/src/NSpark/Signer/SparkFrostBindings.cs "$RUNNER_TEMP/gen/spark_frost.cs"
 
-      - name: Upload artifact
-        uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: native-${{ matrix.rid }}
-          path: out/
+          path: out/runtimes/
           if-no-files-found: error
 
   consolidate:
-    name: Consolidate + SHA256SUMS.txt
+    name: SHA256SUMS + provenance
     runs-on: ubuntu-latest
     needs: build
+    permissions:
+      contents: read
+      id-token: write
+      attestations: write
     steps:
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v4
         with:
           pattern: native-*
-          path: runtimes-staging
+          path: runtimes
           merge-multiple: true
 
-      - name: Generate consolidated SHA256SUMS.txt
+      - name: SHA256SUMS.txt
         run: |
-          cd runtimes-staging
-          find . -type f \( -name "*.dll" -o -name "*.so" -o -name "*.dylib" \) \
-            | sort | xargs shasum -a 256 \
-            | sed 's|  \./|  |' > SHA256SUMS.txt
+          cd runtimes
+          find . -type f \( -name "*.so" -o -name "*.dylib" \) | sort | xargs sha256sum | sed 's|  \./|  |' > SHA256SUMS.txt
           cat SHA256SUMS.txt
 
-      - name: Upload consolidated runtimes/ tree
-        uses: actions/upload-artifact@v7
+      - uses: actions/attest-build-provenance@v2
+        with:
+          subject-path: |
+            runtimes/**/*.so
+            runtimes/**/*.dylib
+
+      - uses: actions/upload-artifact@v4
         with:
           name: runtimes
-          path: runtimes-staging/
+          path: runtimes/
           if-no-files-found: error
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2c00624..b9ba9b1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,6 +24,8 @@ env:
 jobs:
   release:
     name: Build, attest, publish
+    # Publishing to nuget.org is upstream's job; forks (e.g. Elenpay/nspark) never publish.
+    if: github.repository == 'orklabs/nspark'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
diff --git a/docs/native-build.md b/docs/native-build.md
index cfcaf27..cd2d06a 100644
--- a/docs/native-build.md
+++ b/docs/native-build.md
@@ -14,31 +14,53 @@ yourself or add support for a new RID.
 
 ## Supported runtime identifiers
 
-| RID | Status today | Target for v1 |
+This fork ships three RIDs, all rebuilt from Lightspark's source at a pinned
+commit by `scripts/build-native.sh` (locally) and
+`.github/workflows/native-build.yml` (CI):
+
+| RID | Built on | Notes |
 |---|---|---|
-| `osx-arm64`   | ✅ committed (native build on Apple Silicon) | unsigned for v0.x, notarized once Apple Developer cert is acquired |
-| `osx-x64`     | ✅ committed (cross-compiled from arm64 via `rustup target add x86_64-apple-darwin`) | unsigned for v0.x, notarized once Apple Developer cert is acquired |
-| `linux-x64`   | ✅ committed | stripped |
-| `linux-arm64` | ✅ committed (cross-compiled via `cargo-zigbuild`) | stripped |
-| `win-x64`     | ✅ committed (cross-compiled via `cargo-xwin`) | unsigned for v0.x, Authenticode-signed once cert is acquired |
-| `win-arm64`   | ✅ committed (cross-compiled via `cargo-xwin`) | unsigned for v0.x, Authenticode-signed once cert is acquired |
-
-SHA-256 hashes of every shipped binary live in
-`src/NSpark/runtimes/SHA256SUMS.txt` and are also packed into the NuGet at
-the same path. Generated by `find … | shasum -a 256` against the binaries
-themselves; verify with:
+| `linux-x64`   | Amazon Linux 2023 container | glibc ≤ 2.34 (AWS Lambda floor), stripped |
+| `linux-arm64` | Amazon Linux 2023 container | glibc ≤ 2.34, stripped |
+| `osx-arm64`   | macOS, `MACOSX_DEPLOYMENT_TARGET=11.0` | stripped, ad-hoc signed |
+
+`osx-x64`, `win-x64` and `win-arm64` are not shipped: their upstream binaries
+were built outside CI from a different Spark revision, and loading them with
+the current bindings is not verified.
+
+Every build pins `SPARK_SHA` (the same commit the protos are vendored from),
+uses `cargo build --locked`, a pinned `protoc`, and the Rust toolchain from
+`signer/rust-toolchain.toml`, and checks:
+
+- the 34 `uniffi_spark_frost_checksum_func_*` exports the bindings verify at load;
+- on Linux, that no symbol needs a glibc newer than 2.34;
+- that `uniffi-bindgen-cs` regenerates `SparkFrostBindings.cs` byte-for-byte.
+
+The CI workflow also writes `SHA256SUMS.txt` and attaches build-provenance
+attestations to each library. Verify a committed tree with:
 
 ```bash
 ( cd src/NSpark/runtimes && shasum -a 256 -c SHA256SUMS.txt )
 ```
 
-The release CI workflow `.github/workflows/native-build.yml` rebuilds and
-signs every binary on the matching native runner whenever the appropriate
-secrets are configured.
+### Rebuilding locally
+
+```bash
+SPARK_SRC=~/spark   # buildonspark/spark checked out at SPARK_SHA (see native-build.yml)
+# Per-platform digests of the pinned amazonlinux:2023 index (Docker can't pull a
+# second platform of an index digest it already holds).
+AL2023_ARM64=amazonlinux@sha256:442a915d07801a5805b765f4f676f455a0007af70628aa34cd73a735db5740b3
+AL2023_AMD64=amazonlinux@sha256:2851878b108218cccbe7af6ab7dfb87a5883a725623384e19e6256f4072027a3
+docker run --rm --platform linux/arm64 -v "$SPARK_SRC:/spark:ro" -v "$PWD/scripts:/scripts:ro" \
+  -v "$PWD/out:/out" "$AL2023_ARM64" bash /scripts/build-native.sh linux-arm64 /spark /out
+docker run --rm --platform linux/amd64 -v "$SPARK_SRC:/spark:ro" -v "$PWD/scripts:/scripts:ro" \
+  -v "$PWD/out:/out" "$AL2023_AMD64" bash /scripts/build-native.sh linux-x64 /spark /out
+scripts/build-native.sh osx-arm64 "$SPARK_SRC" out
+```
 
-The `NSpark.csproj` `<None Include=… Condition="Exists(…)" />` rules pack
-whatever binaries are present. Missing RIDs do not break the local build;
-they break consumers on that platform.
+Copy
+`out/runtimes/<rid>/native/*` into `src/NSpark/runtimes/` and regenerate
+`SHA256SUMS.txt`. The sections below are upstream's original manual notes.
 
 ## Prerequisites
 
diff --git a/scripts/build-native.sh b/scripts/build-native.sh
new file mode 100755
index 0000000..9fece8a
--- /dev/null
+++ b/scripts/build-native.sh
@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+# Builds libspark_frost (buildonspark/spark signer/spark-frost-uniffi) for one RID, reproducibly,
+# and checks it against the committed C# bindings. Used by .github/workflows/native-build.yml and
+# runnable locally:
+#
+#   Linux RIDs build inside Amazon Linux 2023 (glibc 2.34, the AWS Lambda floor):
+#     docker run --rm --platform linux/arm64 -v "$SPARK_SRC:/spark:ro" -v "$PWD:/nspark" \
+#       "$AL2023_IMAGE" bash /nspark/scripts/build-native.sh linux-arm64 /spark /nspark/out
+#   macOS arm64 builds natively:
+#     scripts/build-native.sh osx-arm64 "$SPARK_SRC" out
+#
+# The Spark checkout must be at SPARK_SHA (see native-build.yml). The script never touches it:
+# the cargo target dir lives under the output dir.
+set -euo pipefail
+
+RID="${1:?usage: build-native.sh <rid> <spark-src> <out-dir>}"
+SRC="$(cd "${2:?spark source dir}" && pwd)"
+OUT="${3:?output dir}"
+mkdir -p "$OUT" && OUT="$(cd "$OUT" && pwd)"
+
+PROTOC_VERSION=29.3
+GLIBC_MAX=2.34
+EXPECTED_CHECKSUMS=34
+
+case "$RID" in
+  linux-x64)   TARGET=x86_64-unknown-linux-gnu;  LIB=libspark_frost.so;    PROTOC_ARCH=linux-x86_64;  PROTOC_SHA=3e866620c5be27664f3d2fa2d656b5f3e09b5152b42f1bedbf427b333e90021a ;;
+  linux-arm64) TARGET=aarch64-unknown-linux-gnu; LIB=libspark_frost.so;    PROTOC_ARCH=linux-aarch_64; PROTOC_SHA=6427349140e01f06e049e707a58709a4f221ae73ab9a0425bc4a00c8d0e1ab32 ;;
+  osx-arm64)   TARGET=aarch64-apple-darwin;      LIB=libspark_frost.dylib; PROTOC_ARCH=osx-aarch_64;  PROTOC_SHA=2b8a3403cd097f95f3ba656e14b76c732b6b26d7f183330b11e36ef2bc028765 ;;
+  *) echo "unsupported RID: $RID" >&2; exit 2 ;;
+esac
+
+TOOLS="$OUT/.tools/$RID"
+mkdir -p "$TOOLS"
+
+if [[ "$RID" == linux-* ]] && command -v dnf > /dev/null; then
+  # Amazon Linux 2023 build container: compiler, binutils and the tools below.
+  dnf install -y -q gcc make tar gzip unzip findutils binutils git > /dev/null
+fi
+
+# Pinned protoc (spark-frost's build.rs runs prost-build).
+if [ ! -x "$TOOLS/protoc/bin/protoc" ]; then
+  curl -fsSL -o "$TOOLS/protoc.zip" \
+    "https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-${PROTOC_ARCH}.zip"
+  echo "$PROTOC_SHA  $TOOLS/protoc.zip" | (command -v sha256sum > /dev/null && sha256sum -c - || shasum -a 256 -c -)
+  rm -rf "$TOOLS/protoc" && mkdir -p "$TOOLS/protoc" && unzip -q "$TOOLS/protoc.zip" -d "$TOOLS/protoc"
+fi
+export PROTOC="$TOOLS/protoc/bin/protoc"
+
+# Rust toolchain pinned by spark/signer/rust-toolchain.toml.
+if ! command -v rustup > /dev/null; then
+  curl -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain none > /dev/null
+  # shellcheck disable=SC1091
+  source "${CARGO_HOME:-$HOME/.cargo}/env"
+fi
+
+cd "$SRC/signer"
+rustup toolchain install > /dev/null
+rustup target add "$TARGET" > /dev/null
+
+# Native host builds: override signer/.cargo/config.toml's cross linkers.
+export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER=gcc
+export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=gcc
+export CARGO_TARGET_DIR="$OUT/.target/$RID"
+export RUSTFLAGS="--remap-path-prefix=$SRC=/spark --remap-path-prefix=${CARGO_HOME:-$HOME/.cargo}=/cargo"
+[[ "$RID" == osx-* ]] && export MACOSX_DEPLOYMENT_TARGET=11.0
+
+cargo build --locked --release -p spark-frost-uniffi --target "$TARGET"
+
+DEST="$OUT/runtimes/$RID/native"
+mkdir -p "$DEST"
+cp "$CARGO_TARGET_DIR/$TARGET/release/$LIB" "$DEST/$LIB"
+
+if [[ "$RID" == linux-* ]]; then
+  strip --strip-unneeded "$DEST/$LIB"
+  glibc="$(objdump -T "$DEST/$LIB" | grep -oE 'GLIBC_[0-9.]+' | sed 's/GLIBC_//' | sort -Vu | tail -1)"
+  if [ "$(printf '%s\n%s\n' "$glibc" "$GLIBC_MAX" | sort -V | tail -1)" != "$GLIBC_MAX" ]; then
+    echo "$LIB needs GLIBC_$glibc, above the $GLIBC_MAX floor" >&2; exit 1
+  fi
+  echo "glibc floor: $glibc (max allowed $GLIBC_MAX)"
+  checksums="$(nm -D --defined-only "$DEST/$LIB" | grep -c uniffi_spark_frost_checksum_func_)"
+else
+  strip -x "$DEST/$LIB"
+  codesign -f -s - "$DEST/$LIB"
+  checksums="$(nm -gU "$DEST/$LIB" | grep -c uniffi_spark_frost_checksum_func_)"
+fi
+
+if [ "$checksums" -ne "$EXPECTED_CHECKSUMS" ]; then
+  echo "expected $EXPECTED_CHECKSUMS uniffi checksum functions, found $checksums" >&2; exit 1
+fi
+echo "uniffi checksum functions: $checksums"
+(cd "$OUT" && (command -v sha256sum > /dev/null && sha256sum "runtimes/$RID/native/$LIB" || shasum -a 256 "runtimes/$RID/native/$LIB"))
diff --git a/src/NSpark/NSpark.csproj b/src/NSpark/NSpark.csproj
index fdb117e..2f3f6ef 100644
--- a/src/NSpark/NSpark.csproj
+++ b/src/NSpark/NSpark.csproj
@@ -81,26 +81,11 @@
           CopyToOutputDirectory="PreserveNewest"
           Link="runtimes/linux-x64/native/libspark_frost.so"
           Condition="Exists('runtimes/linux-x64/native/libspark_frost.so')" />
-    <None Include="runtimes/osx-x64/native/libspark_frost.dylib"
-          Pack="true" PackagePath="runtimes/osx-x64/native/"
-          CopyToOutputDirectory="PreserveNewest"
-          Link="runtimes/osx-x64/native/libspark_frost.dylib"
-          Condition="Exists('runtimes/osx-x64/native/libspark_frost.dylib')" />
     <None Include="runtimes/linux-arm64/native/libspark_frost.so"
           Pack="true" PackagePath="runtimes/linux-arm64/native/"
           CopyToOutputDirectory="PreserveNewest"
           Link="runtimes/linux-arm64/native/libspark_frost.so"
           Condition="Exists('runtimes/linux-arm64/native/libspark_frost.so')" />
-    <None Include="runtimes/win-x64/native/spark_frost.dll"
-          Pack="true" PackagePath="runtimes/win-x64/native/"
-          CopyToOutputDirectory="PreserveNewest"
-          Link="runtimes/win-x64/native/spark_frost.dll"
-          Condition="Exists('runtimes/win-x64/native/spark_frost.dll')" />
-    <None Include="runtimes/win-arm64/native/spark_frost.dll"
-          Pack="true" PackagePath="runtimes/win-arm64/native/"
-          CopyToOutputDirectory="PreserveNewest"
-          Link="runtimes/win-arm64/native/spark_frost.dll"
-          Condition="Exists('runtimes/win-arm64/native/spark_frost.dll')" />
   </ItemGroup>
 
   <!-- Optional integrity manifest: SHA-256 of every shipped native binary. -->
diff --git a/src/NSpark/runtimes/SHA256SUMS.txt b/src/NSpark/runtimes/SHA256SUMS.txt
index e815fac..8fff955 100644
--- a/src/NSpark/runtimes/SHA256SUMS.txt
+++ b/src/NSpark/runtimes/SHA256SUMS.txt
@@ -1,6 +1,3 @@
-7e5aed606a8aee2fb41a69a8ac57011747c03282262413d555ff933ddcef197c  linux-arm64/native/libspark_frost.so
-62fff70176a36a972ede575bfcc3dc5e2951c5d24fbbcce08179a014e1447496  linux-x64/native/libspark_frost.so
-0e935fa9c2de1f28b7b77681f8860ea081eed0252d986b058295cb59c7a67abd  osx-arm64/native/libspark_frost.dylib
-82a1e33519ca3dcdb5e5350bfb6c5dd559c45d207d88f4a9308c8a3b9b6dcc04  osx-x64/native/libspark_frost.dylib
-491c0c5c328a45cad06a9b3da37db0c3303644c56f4edaea57d16d078b1f5e5d  win-arm64/native/spark_frost.dll
-a044adacf57a52f45dd5a64a044db2b2d1255bdfa80368943490cf9c3b70fd43  win-x64/native/spark_frost.dll
+7afe8a4c273db9957684d30ec7cb2dd414f7019669430ac417e8332b5acec808  linux-arm64/native/libspark_frost.so
+9031ecc6d769d739bb3899f8ed00a79c943609dd9524b73db639d074f5eea264  linux-x64/native/libspark_frost.so
+aaee55f4d3b492420b9a4d41feb5c1f06f5d68a4dc41865370b52c0d76761bdf  osx-arm64/native/libspark_frost.dylib
diff --git a/src/NSpark/runtimes/linux-arm64/native/libspark_frost.so b/src/NSpark/runtimes/linux-arm64/native/libspark_frost.so
index 9dbef9f..297c8db 100755
Binary files a/src/NSpark/runtimes/linux-arm64/native/libspark_frost.so and b/src/NSpark/runtimes/linux-arm64/native/libspark_frost.so differ
diff --git a/src/NSpark/runtimes/linux-x64/native/libspark_frost.so b/src/NSpark/runtimes/linux-x64/native/libspark_frost.so
index f893d42..3942bd6 100755
Binary files a/src/NSpark/runtimes/linux-x64/native/libspark_frost.so and b/src/NSpark/runtimes/linux-x64/native/libspark_frost.so differ
diff --git a/src/NSpark/runtimes/osx-arm64/native/libspark_frost.dylib b/src/NSpark/runtimes/osx-arm64/native/libspark_frost.dylib
index 838946e..9cee43c 100755
Binary files a/src/NSpark/runtimes/osx-arm64/native/libspark_frost.dylib and b/src/NSpark/runtimes/osx-arm64/native/libspark_frost.dylib differ
diff --git a/src/NSpark/runtimes/osx-x64/native/libspark_frost.dylib b/src/NSpark/runtimes/osx-x64/native/libspark_frost.dylib
deleted file mode 100755
index 2695b91..0000000
Binary files a/src/NSpark/runtimes/osx-x64/native/libspark_frost.dylib and /dev/null differ
diff --git a/src/NSpark/runtimes/win-arm64/native/spark_frost.dll b/src/NSpark/runtimes/win-arm64/native/spark_frost.dll
deleted file mode 100755
index b9ffaf5..0000000
Binary files a/src/NSpark/runtimes/win-arm64/native/spark_frost.dll and /dev/null differ
diff --git a/src/NSpark/runtimes/win-x64/native/spark_frost.dll b/src/NSpark/runtimes/win-x64/native/spark_frost.dll
deleted file mode 100755
index c1f155e..0000000
Binary files a/src/NSpark/runtimes/win-x64/native/spark_frost.dll and /dev/null differ