diff --git a/actions/restore-assets/action.yml b/actions/restore-assets/action.yml
index a59eb81..db058a6 100644
--- a/actions/restore-assets/action.yml
+++ b/actions/restore-assets/action.yml
@@ -5,12 +5,15 @@ inputs:
   frontend-path:
     description: 'Path to frontend directory'
     required: true
+  github-token:
+    description: 'GitHub token for API access (used to compute cache key from remote SHAs)'
+    required: true
   use-artifacts:
     description: 'Whether to download from artifacts (requires cache job to have run first)'
     required: false
     default: 'true'
   cache-version:
-    description: 'Cache version (must match sync-assets for cache hits)'
+    description: 'Cache version fallback when remote SHA lookup fails'
     required: false
     default: 'v1'
 
@@ -25,15 +28,33 @@ outputs:
 runs:
   using: 'composite'
   steps:
+    - name: Compute asset cache key from remote SHAs
+      id: asset-hash
+      shell: bash
+      env:
+        FALLBACK_VERSION: ${{ inputs.cache-version }}
+      run: |
+        AUTH_HEADER="Authorization: Bearer ${{ inputs.github-token }}"
+        LOGOS_SHA=$(curl -sf -H "$AUTH_HEADER" -H "X-GitHub-Api-Version: 2022-11-28" \
+          "https://api.github.com/repos/mempool/mining-pool-logos/commits/HEAD" 2>/dev/null | jq -r '.sha // empty') || true
+        PROMO_SHA=$(curl -sf -H "$AUTH_HEADER" -H "X-GitHub-Api-Version: 2022-11-28" \
+          "https://api.github.com/repos/mempool/mempool-promo/commits/HEAD" 2>/dev/null | jq -r '.sha // empty') || true
+        if [[ -n "$LOGOS_SHA" && -n "$PROMO_SHA" ]]; then
+          HASH=$(echo -n "${LOGOS_SHA}${PROMO_SHA}" | sha256sum | cut -c1-12)
+        else
+          HASH="$FALLBACK_VERSION"
+        fi
+        echo "hash=$HASH" >> $GITHUB_OUTPUT
+
     - name: Restore cached mining pool assets
       continue-on-error: true
       id: cache-mining-pool-restore
       uses: actions/cache/restore@v4
       with:
         path: mining-pool-assets.zip
-        key: mining-pool-assets-${{ inputs.cache-version }}
+        key: mining-pool-assets-${{ steps.asset-hash.outputs.hash }}
         restore-keys: |
-          mining-pool-assets-${{ inputs.cache-version }}-
+          mining-pool-assets-${{ steps.asset-hash.outputs.hash }}-
 
     - name: Restore cached promo video assets
       continue-on-error: true
@@ -41,9 +62,9 @@ runs:
       uses: actions/cache/restore@v4
       with:
         path: promo-video-assets.zip
-        key: promo-video-assets-${{ inputs.cache-version }}
+        key: promo-video-assets-${{ steps.asset-hash.outputs.hash }}
         restore-keys: |
-          promo-video-assets-${{ inputs.cache-version }}-
+          promo-video-assets-${{ steps.asset-hash.outputs.hash }}-
 
     - name: Download mining pool artifact
       if: fromJSON(inputs.use-artifacts)
diff --git a/actions/sync-assets/action.yml b/actions/sync-assets/action.yml
index 1b25e5b..9a604f5 100644
--- a/actions/sync-assets/action.yml
+++ b/actions/sync-assets/action.yml
@@ -13,22 +13,45 @@ inputs:
     required: false
     default: 'sync-assets-dev'
   cache-version:
-    description: 'Cache version for manual invalidation (bump to force fresh sync)'
+    description: 'Cache version fallback when remote SHA lookup fails'
     required: false
     default: 'v1'
 
+outputs:
+  cache-key-hash:
+    description: 'Hash used for cache keys (from remote SHAs or cache-version fallback)'
+    value: ${{ steps.asset-hash.outputs.hash }}
+
 runs:
   using: 'composite'
   steps:
+    - name: Compute asset cache key from remote SHAs
+      id: asset-hash
+      shell: bash
+      env:
+        FALLBACK_VERSION: ${{ inputs.cache-version }}
+      run: |
+        AUTH_HEADER="Authorization: Bearer ${{ inputs.github-token }}"
+        LOGOS_SHA=$(curl -sf -H "$AUTH_HEADER" -H "X-GitHub-Api-Version: 2022-11-28" \
+          "https://api.github.com/repos/mempool/mining-pool-logos/commits/HEAD" 2>/dev/null | jq -r '.sha // empty') || true
+        PROMO_SHA=$(curl -sf -H "$AUTH_HEADER" -H "X-GitHub-Api-Version: 2022-11-28" \
+          "https://api.github.com/repos/mempool/mempool-promo/commits/HEAD" 2>/dev/null | jq -r '.sha // empty') || true
+        if [[ -n "$LOGOS_SHA" && -n "$PROMO_SHA" ]]; then
+          HASH=$(echo -n "${LOGOS_SHA}${PROMO_SHA}" | sha256sum | cut -c1-12)
+        else
+          HASH="$FALLBACK_VERSION"
+        fi
+        echo "hash=$HASH" >> $GITHUB_OUTPUT
+
     # Cache miss is success with cache-hit=false; only real errors (network, permissions) fail the step.
     - name: Restore cached mining pool assets
       id: cache-mining-pool-restore
       uses: actions/cache/restore@v4
       with:
         path: mining-pool-assets.zip
-        key: mining-pool-assets-${{ inputs.cache-version }}
+        key: mining-pool-assets-${{ steps.asset-hash.outputs.hash }}
         restore-keys: |
-          mining-pool-assets-${{ inputs.cache-version }}-
+          mining-pool-assets-${{ steps.asset-hash.outputs.hash }}-
 
     # Cache miss is success with cache-hit=false; only real errors (network, permissions) fail the step.
     - name: Restore cached promo video assets
@@ -36,9 +59,9 @@ runs:
       uses: actions/cache/restore@v4
       with:
         path: promo-video-assets.zip
-        key: promo-video-assets-${{ inputs.cache-version }}
+        key: promo-video-assets-${{ steps.asset-hash.outputs.hash }}
         restore-keys: |
-          promo-video-assets-${{ inputs.cache-version }}-
+          promo-video-assets-${{ steps.asset-hash.outputs.hash }}-
 
     - name: Unzip mining pool assets before sync
       continue-on-error: true
@@ -100,11 +123,11 @@ runs:
       uses: actions/cache/save@v4
       with:
         path: mining-pool-assets.zip
-        key: mining-pool-assets-${{ inputs.cache-version }}
+        key: mining-pool-assets-${{ steps.asset-hash.outputs.hash }}
 
     - name: Save promo video assets cache
       if: steps.cache-promo-video-restore.outputs.cache-hit != 'true'
       uses: actions/cache/save@v4
       with:
         path: promo-video-assets.zip
-        key: promo-video-assets-${{ inputs.cache-version }}
+        key: promo-video-assets-${{ steps.asset-hash.outputs.hash }}