diff --git a/backend/services/mpc-service/prisma/migrations/20250102000000_init/migration.sql b/backend/services/mpc-service/prisma/migrations/20250102000000_init/migration.sql
new file mode 100644
index 00000000..92e4b146
--- /dev/null
+++ b/backend/services/mpc-service/prisma/migrations/20250102000000_init/migration.sql
@@ -0,0 +1,51 @@
+-- CreateTable
+CREATE TABLE "party_shares" (
+    "id" VARCHAR(255) NOT NULL,
+    "party_id" VARCHAR(255) NOT NULL,
+    "session_id" VARCHAR(255) NOT NULL,
+    "share_type" VARCHAR(20) NOT NULL,
+    "share_data" TEXT NOT NULL,
+    "public_key" TEXT NOT NULL,
+    "threshold_n" INTEGER NOT NULL,
+    "threshold_t" INTEGER NOT NULL,
+    "status" VARCHAR(20) NOT NULL DEFAULT 'active',
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+    "last_used_at" TIMESTAMP(3),
+
+    CONSTRAINT "party_shares_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "signing_sessions" (
+    "id" VARCHAR(255) NOT NULL,
+    "party_id" VARCHAR(255) NOT NULL,
+    "session_id" VARCHAR(255) NOT NULL,
+    "message_hash" VARCHAR(255) NOT NULL,
+    "signature" TEXT,
+    "status" VARCHAR(20) NOT NULL DEFAULT 'pending',
+    "error_message" TEXT,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+    "completed_at" TIMESTAMP(3),
+
+    CONSTRAINT "signing_sessions_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "party_shares_party_id_idx" ON "party_shares"("party_id");
+
+-- CreateIndex
+CREATE INDEX "party_shares_session_id_idx" ON "party_shares"("session_id");
+
+-- CreateIndex
+CREATE INDEX "party_shares_status_idx" ON "party_shares"("status");
+
+-- CreateIndex
+CREATE INDEX "signing_sessions_party_id_idx" ON "signing_sessions"("party_id");
+
+-- CreateIndex
+CREATE INDEX "signing_sessions_session_id_idx" ON "signing_sessions"("session_id");
+
+-- CreateIndex
+CREATE INDEX "signing_sessions_status_idx" ON "signing_sessions"("status");
diff --git a/backend/services/mpc-service/prisma/migrations/migration_lock.toml b/backend/services/mpc-service/prisma/migrations/migration_lock.toml
new file mode 100644
index 00000000..8affd027
--- /dev/null
+++ b/backend/services/mpc-service/prisma/migrations/migration_lock.toml
@@ -0,0 +1,2 @@
+# Prisma Migrate lockfile v1
+provider = "postgresql"