diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 41537a05..9a41446b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,18 +39,18 @@ jobs:
         uses: fabiocaccamo/create-matrix-action@v5
         with:
           matrix: |
-            os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {unittest},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {contract},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {unittest},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {contract},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
             os {linux},   cpu {amd64}, builder {${{ env.builder_integration_linux }}},   tests {integration}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {tools},       nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {macos},   cpu {arm64}, builder {macos-14},       tests {unittest},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {macos},   cpu {arm64}, builder {macos-14},       tests {contract},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {macos},   cpu {arm64}, builder {${{ env.builder_integration_macos }}},   tests {integration}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {macos},   cpu {arm64}, builder {macos-14},       tests {tools},       nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {windows}, cpu {amd64}, builder {windows-latest}, tests {unittest},    nim_version {${{ env.nim_version }}}, shell {msys2}
-            os {windows}, cpu {amd64}, builder {windows-latest}, tests {contract},    nim_version {${{ env.nim_version }}}, shell {msys2}
-            os {windows}, cpu {amd64}, builder {${{ env.builder_integration_windows }}}, tests {integration}, nim_version {${{ env.nim_version }}}, shell {msys2}
-            os {windows}, cpu {amd64}, builder {windows-latest}, tests {tools},       nim_version {${{ env.nim_version }}}, shell {msys2}
+            # os {linux},   cpu {amd64}, builder {ubuntu-latest},   tests {tools},       nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {macos},   cpu {arm64}, builder {macos-14},       tests {unittest},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {macos},   cpu {arm64}, builder {macos-14},       tests {contract},    nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {macos},   cpu {arm64}, builder {${{ env.builder_integration_macos }}},   tests {integration}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {macos},   cpu {arm64}, builder {macos-14},       tests {tools},       nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            # os {windows}, cpu {amd64}, builder {windows-latest}, tests {unittest},    nim_version {${{ env.nim_version }}}, shell {msys2}
+            # os {windows}, cpu {amd64}, builder {windows-latest}, tests {contract},    nim_version {${{ env.nim_version }}}, shell {msys2}
+            # os {windows}, cpu {amd64}, builder {${{ env.builder_integration_windows }}}, tests {integration}, nim_version {${{ env.nim_version }}}, shell {msys2}
+            # os {windows}, cpu {amd64}, builder {windows-latest}, tests {tools},       nim_version {${{ env.nim_version }}}, shell {msys2}
 
   build:
     needs: matrix
diff --git a/codex/contracts/marketplace.nim b/codex/contracts/marketplace.nim
index 419de307..0bf4354d 100644
--- a/codex/contracts/marketplace.nim
+++ b/codex/contracts/marketplace.nim
@@ -215,17 +215,6 @@ proc canMarkProofAsMissing*(
   ]
 .}
 
-proc canMarkProofAsMissing*(
-  marketplace: Marketplace, id: SlotId, period: uint64
-): Confirmable {.
-  contract,
-  errors: [
-    Marketplace_SlotNotAcceptingProofs, Proofs_PeriodNotEnded,
-    Proofs_ValidationTimedOut, Proofs_ProofNotMissing, Proofs_ProofNotRequired,
-    Proofs_ProofAlreadyMarkedMissing,
-  ]
-.}
-
 proc reserveSlot*(
   marketplace: Marketplace, requestId: RequestId, slotIndex: uint64
 ): Confirmable {.contract, errors: [SlotReservations_ReservationNotAllowed].}