diff --git a/packages/library/src/index.ts b/packages/library/src/index.ts
index 98d83302..83ad42af 100644
--- a/packages/library/src/index.ts
+++ b/packages/library/src/index.ts
@@ -4,6 +4,7 @@ export * from "./math/UInt64";
 export * from "./math/UInt112";
 export * from "./math/UInt224";
 export * from "./protocol/VanillaProtocolModules";
+export * from "./protocol/WithdrawalMessageProcessor";
 export * from "./runtime/Balances";
 export * from "./runtime/VanillaRuntimeModules";
 export * from "./runtime/Withdrawals";
diff --git a/packages/protocol/src/prover/block/BlockProver.ts b/packages/protocol/src/prover/block/BlockProver.ts
index 4bb709c2..38bc988e 100644
--- a/packages/protocol/src/prover/block/BlockProver.ts
+++ b/packages/protocol/src/prover/block/BlockProver.ts
@@ -446,7 +446,6 @@ export class BlockProverProgrammable extends ZkProgrammable<
     const finalizeBlockProof = deferTransactionProof.or(deferSTProof).not();
     // .or()
     // .or(state.bundleList.isEmpty().and(state.pendingSTBatches.isEmpty()));
-    // TODO This finalizes immediately if nothing happened - which we don't account for in tracer currently
 
     return this.computeOutput(publicInput, state, finalizeBlockProof);
   }
diff --git a/packages/protocol/src/settlement/contracts/BridgeContract.ts b/packages/protocol/src/settlement/contracts/BridgeContract.ts
index f56f8ec9..764a6f94 100644
--- a/packages/protocol/src/settlement/contracts/BridgeContract.ts
+++ b/packages/protocol/src/settlement/contracts/BridgeContract.ts
@@ -70,7 +70,9 @@ export class BridgeContractContext {
 }
 
 export interface BridgeContractArgs {
-  SettlementContract: TypedClass<BridgingSettlementContractType> &
+  SettlementContract: TypedClass<
+    Pick<BridgingSettlementContractType, "assertStateRoot">
+  > &
     typeof SmartContract;
   messageProcessors: OutgoingMessageProcessor<unknown>[];
   batchSize?: number;
@@ -186,7 +188,9 @@ export abstract class BridgeContractBase
         messageType: args.messageType,
         value,
       });
+      Provable.log("h", Poseidon.hash(MessageType.toFields(message)));
       return {
+        // TODO This doesn't make any sense tbh...
         messageType: args.messageType,
         result: processor.processMessage(value, {
           bridgeContract: {
@@ -302,6 +306,10 @@ export abstract class BridgeContractBase
         }
       );
 
+      Provable.log(message.hash);
+      Provable.log(path);
+      Provable.log(stateRoot);
+
       args.witness
         .checkMembership(stateRoot, path, message.hash)
         .or(isDummy)
diff --git a/packages/sdk/test/bridgeContract/bridge-contract.test.ts b/packages/sdk/test/bridgeContract/bridge-contract.test.ts
new file mode 100644
index 00000000..4918b91f
--- /dev/null
+++ b/packages/sdk/test/bridgeContract/bridge-contract.test.ts
@@ -0,0 +1,176 @@
+import "reflect-metadata";
+import {
+  BridgeContract,
+  BridgeContractArgs,
+  BridgeContractContext,
+  BridgingSettlementContractType,
+  ContractArgsRegistry,
+  createMessageStruct,
+  OutgoingMessageArgument,
+  OutgoingMessageArgumentBatch,
+  OutgoingMessageKey,
+  Path,
+  PROTOKIT_FIELD_PREFIXES,
+} from "@proto-kit/protocol";
+import {
+  AccountUpdate,
+  Mina,
+  PrivateKey,
+  SmartContract,
+  state,
+  State,
+  Permissions,
+  TokenId,
+  Field,
+  UInt64,
+  Poseidon,
+  Provable,
+  method,
+} from "o1js";
+import { container } from "tsyringe";
+import { Withdrawal, WithdrawalMessageProcessor } from "@proto-kit/library";
+import {
+  InMemoryLinkedLeafStore,
+  InMemoryMerkleTreeStorage,
+  LinkedMerkleTree,
+  noop,
+} from "@proto-kit/common";
+
+class MockSettlementContract
+  extends SmartContract
+  implements Pick<BridgingSettlementContractType, "assertStateRoot">
+{
+  @state(Field) root = State<Field>(Field(100));
+
+  public assertStateRoot(root: Field): AccountUpdate {
+    return this.self;
+  }
+
+  @method
+  public async test() {
+    noop();
+  }
+}
+
+const proofsEnabled = false;
+
+describe("bridging contract", () => {
+  it("setup", async () => {
+    container
+      .resolve(ContractArgsRegistry)
+      .addArgs<BridgeContractArgs>("BridgeContract", {
+        SettlementContract: MockSettlementContract,
+        messageProcessors: [new WithdrawalMessageProcessor() as any],
+      });
+
+    const key1 = PrivateKey.random();
+    const key2 = PrivateKey.random();
+
+    const chain = await Mina.LocalBlockchain({ proofsEnabled });
+    Mina.setActiveInstance(chain);
+
+    const vkSettlement = await MockSettlementContract.compile();
+    const vk = await BridgeContract.compile();
+
+    const settlement = new MockSettlementContract(key1.toPublicKey());
+    const contract = new BridgeContract(key2.toPublicKey());
+
+    const tx = await Mina.transaction(chain.testAccounts[0], async () => {
+      AccountUpdate.fundNewAccount(chain.testAccounts[0], 2);
+
+      await settlement.deploy(vkSettlement);
+
+      const accountUpdate = await contract.deployProvable(
+        vk.verificationKey,
+        false,
+        Permissions.default(),
+        key1.toPublicKey()
+      );
+      accountUpdate.requireSignature();
+      AccountUpdate.attachToTransaction(accountUpdate);
+
+      AccountUpdate.createSigned(chain.testAccounts[0]).send({
+        to: key1.toPublicKey(),
+        amount: 1e9,
+      });
+    });
+
+    const proven = await tx
+      .sign([chain.testAccounts[0].key, key1, key2])
+      .prove();
+    const txId = await proven.send();
+    await txId.wait();
+
+    const tree = new LinkedMerkleTree(
+      new InMemoryMerkleTreeStorage(),
+      new InMemoryLinkedLeafStore()
+    );
+    const path = Path.fromKey(
+      PROTOKIT_FIELD_PREFIXES.OUTGOING_MESSAGE_BASE_PATH,
+      OutgoingMessageKey,
+      {
+        index: Field(0),
+        tokenId: contract.tokenId,
+      }
+    );
+    const message = new Withdrawal({
+      tokenId: TokenId.default,
+      amount: UInt64.from(1e9),
+      address: chain.testAccounts[1].key.toPublicKey(),
+    });
+    const MessageType = createMessageStruct(Withdrawal);
+    tree.setLeaf(
+      path.toBigInt(),
+      Poseidon.hash(
+        MessageType.toFields({ messageType: Field(0), value: message })
+      ).toBigInt()
+    );
+    Provable.log(
+      "tree hash",
+      Poseidon.hash(
+        MessageType.toFields({ messageType: Field(0), value: message })
+      ).toBigInt()
+    );
+
+    const tx2 = await Mina.transaction(chain.testAccounts[0], async () => {
+      await contract.updateStateRoot(tree.getRoot());
+    });
+    const proven2 = await tx2
+      .sign([chain.testAccounts[0].key, key1, key2])
+      .prove();
+    const txId2 = await proven2.send();
+    await txId2.wait();
+
+    container.resolve(BridgeContractContext).data = {
+      messageInputs: [[message]],
+    };
+
+    const treeWitness = tree.getReadWitness(path.toBigInt());
+
+    const tx3 = await Mina.transaction(chain.testAccounts[0], async () => {
+      const funded = await contract.rollupOutgoingMessages(
+        OutgoingMessageArgumentBatch.fromMessages([
+          new OutgoingMessageArgument({
+            messageType: Field(0),
+            witness: treeWitness,
+          }),
+        ])
+      );
+
+      let numNewAccountsNumber = 0;
+      Provable.asProver(() => {
+        numNewAccountsNumber = parseInt(funded.toString(), 10);
+      });
+
+      // Pay account creation fees for internal token accounts
+      AccountUpdate.fundNewAccount(chain.testAccounts[0], numNewAccountsNumber);
+    });
+    const proven3 = await tx3
+      .sign([chain.testAccounts[0].key, key1, key2])
+      .prove();
+    const txId3 = await proven3.send();
+    await txId3.wait();
+
+    console.log(proven3.proofs.map((p) => p?.toJSON()));
+  }, 300000);
+});