diff --git a/contracts-c/display/display.c b/contracts-c/display/display.c
new file mode 100644
index 0000000..ad8c7e0
--- /dev/null
+++ b/contracts-c/display/display.c
@@ -0,0 +1,135 @@
+#include "hookapi.h"
+
+#define SVAR(x) &(x), sizeof(x)
+
+#define NOPE(x)                                    \
+    {                                              \
+        return rollback((x), sizeof(x), __LINE__); \
+    }
+
+#define MULTIPLIER 0.2 // 0.2 (6 XAH for 30 LEDGERS == 0.2 XAH PER LEDGER)
+#define MAX 60         // 30 LEDGERS
+
+uint8_t bids_ns[32] = {
+    0xAF, 0xD5, 0x20, 0x13, 0x12, 0xCC, 0xC1, 0xA5,
+    0x41, 0x02, 0x63, 0x25, 0x9D, 0x0B, 0x22, 0x30,
+    0x99, 0x18, 0x52, 0x16, 0x95, 0x5F, 0x8F, 0x6E,
+    0x1C, 0x71, 0xF4, 0x14, 0xF0, 0x32, 0x48, 0xB6};
+;
+
+int64_t hook(uint32_t r)
+{
+    _g(1, 1);
+    // ACCOUNT: Origin Tx Account
+    uint8_t otxn_accid[32];
+    otxn_field(otxn_accid + 12, 20, sfAccount);
+
+    // ACCOUNT: Hook Account
+    uint8_t hook_accid[32];
+    hook_account(hook_accid + 12, 20);
+
+    // FILTER ON: ACCOUNT
+    if (BUFFER_EQUAL_20(hook_accid + 12, otxn_accid + 12))
+        DONE("display.c: outgoing tx on `Account`.");
+
+    int64_t tt = otxn_type();
+    if (tt != ttINVOKE && tt != ttPAYMENT)
+        NOPE("display.c: Rejecting non-Invoke, non-Payment txn.");
+
+    uint8_t amount_buffer[48];
+    otxn_slot(1);
+    slot_subfield(1, sfAmount, 2);
+
+    int64_t amount_xfl;
+    uint32_t flags;
+    if (tt == ttPAYMENT)
+    {
+        // this will fail if flags isn't in the txn, that's also ok.
+        otxn_field(&flags, 4, sfFlags);
+
+        // check for partial payments (0x00020000) -> (0x00000200 LE)
+        if (flags & 0x200U)
+            NOPE("display.c: Partial payments are not supported.");
+
+        otxn_field(SBUF(amount_buffer), sfAmount);
+
+        amount_xfl = slot_float(2);
+
+        if (amount_xfl < 0 || !float_compare(amount_xfl, 1, COMPARE_GREATER))
+            NOPE("display.c: Invalid sfAmount.");
+    }
+
+    // // Operation
+    uint8_t op;
+    if (otxn_param(&op, 1, "OP", 2) != 1)
+        NOPE("display.c: Missing OP parameter on Invoke/Payment.");
+
+    // sanity check
+    if (op == 'B' && tt != ttPAYMENT)
+        NOPE("display.c: Bid operations must be a payment transaction.");
+
+    // sanity check
+    if (op == 'U' && tt != ttINVOKE)
+        NOPE("display.c: Update operations must be a invoke transaction.");
+
+    int64_t count;
+    if (state(&count, 8, hook_accid + 12, 20) == DOESNT_EXIST)
+    {
+        // set current if initialization
+        ASSERT(0 < state_set(&count, 8, hook_accid + 12, 20));
+    }
+
+    switch (op)
+    {
+        case 'B':
+        {
+            uint8_t tid[40];
+            if (otxn_param(tid, 32, "ID", 2) != 32)
+                NOPE("display.c: Missing ID parameter on Payment.");
+
+            int64_t bid_count;
+            state_foreign(&bid_count, 8, hook_accid + 12, 20, bids_ns, 32, hook_accid + 12, 20);
+
+            int64_t end_ledger;
+            int64_t cur_ledger = ledger_seq();
+            if (state_foreign(&end_ledger, 8, hook_accid + 12, 20, 0, 32, hook_accid + 12, 20) == DOESNT_EXIST || end_ledger < cur_ledger)
+            {
+                end_ledger = cur_ledger;
+            }
+
+            // calculate ledgers
+            int64_t amount_int = float_int(amount_xfl, 0, 1);
+            int64_t duration = amount_int / MULTIPLIER;
+            if (duration > MAX)
+                NOPE("display.c: Duration cannot be more than 60 ledgers.");
+
+            end_ledger += duration;
+            UINT64_TO_BUF(tid + 32, end_ledger);
+            ASSERT(0 < state_foreign_set(tid, 40, &bid_count, 8, bids_ns, 32, hook_accid + 12, 20));
+
+            bid_count++;
+            ASSERT(0 < state_foreign_set(&bid_count, 8, hook_accid + 12, 20, bids_ns, 32, hook_accid + 12, 20));
+            ASSERT(0 < state_foreign_set(&end_ledger, 8, hook_accid + 12, 20, 0, 32, hook_accid + 12, 20));
+            TRACESTR("display.c: Bid.");
+            return accept(SBUF("display.c: Bid."), __LINE__);
+        }
+        case 'U':
+        {
+            uint8_t tid[40];
+            state_foreign(tid, 40, &count, 8, bids_ns, 32, hook_accid + 12, 20);
+            uint64_t final_ledger = UINT64_FROM_BUF(tid + 32);
+            int64_t cur_sequence = ledger_seq();
+            if (cur_sequence < final_ledger)
+            {
+                NOPE("display.c: Duration has not expired.");
+            }
+
+            state_foreign_set(0, 0, &count, 8, bids_ns, 32, hook_accid + 12, 20);
+
+            count++;
+            ASSERT(0 < state_set(&count, 8, hook_accid + 12, 20));
+            TRACESTR("display.c: Update.");
+            return accept(SBUF("display.c: Update."), __LINE__);
+        }
+    }
+}
\ No newline at end of file
diff --git a/test/integration-c/display/display.test.ts b/test/integration-c/display/display.test.ts
new file mode 100644
index 0000000..03385e6
--- /dev/null
+++ b/test/integration-c/display/display.test.ts
@@ -0,0 +1,166 @@
+// xrpl
+import {
+  URITokenMint,
+  Payment,
+  Invoke,
+  SetHookFlags,
+  convertStringToHex,
+  TransactionMetadata,
+  xrpToDrops,
+} from '@transia/xrpl'
+// xrpl-helpers
+import {
+  XrplIntegrationTestContext,
+  setupClient,
+  teardownClient,
+  serverUrl,
+  close,
+} from '@transia/hooks-toolkit/dist/npm/src/libs/xrpl-helpers'
+// src
+import {
+  SetHookParams,
+  createHookPayload,
+  setHooksV3,
+  iHookParamEntry,
+  iHookParamName,
+  iHookParamValue,
+  ExecutionUtility,
+  Xrpld,
+  StateUtility,
+  hexNamespace,
+  padHexString,
+  flipHex,
+} from '@transia/hooks-toolkit/dist/npm/src'
+import { hashURIToken } from '@transia/xrpl/dist/npm/utils/hashes'
+import {
+  decodeModel,
+  hexToUInt64,
+  xrpAddressToHex,
+} from '@transia/hooks-toolkit/dist/npm/src/libs/binary-models'
+import { DisplayModel } from './models/DisplayModel'
+
+// LevelThree: ACCEPT: success
+
+describe('hunt', () => {
+  let testContext: XrplIntegrationTestContext
+
+  beforeAll(async () => {
+    testContext = await setupClient(serverUrl)
+    const hookWallet = testContext.hook1
+
+    const hook1 = createHookPayload({
+      version: 0,
+      createFile: 'display',
+      namespace: 'display',
+      flags: SetHookFlags.hsfOverride,
+      hookOnArray: ['Payment', 'Invoke'],
+    })
+    await setHooksV3({
+      client: testContext.client,
+      seed: hookWallet.seed,
+      hooks: [{ Hook: hook1 }],
+    } as SetHookParams)
+  })
+  afterAll(async () => teardownClient(testContext))
+
+  it('display - success', async () => {
+    const aliceWallet = testContext.alice
+    const hookWallet = testContext.hook1
+
+    // Bob: Mint and Sell
+    const random = Math.random()
+    const builtTx1: URITokenMint = {
+      TransactionType: 'URITokenMint',
+      Account: aliceWallet.classicAddress,
+      URI: convertStringToHex(`ipfs://${random}`),
+    }
+    await Xrpld.submit(testContext.client, {
+      wallet: aliceWallet,
+      tx: builtTx1,
+    })
+    await close(testContext.client)
+    const uriTokenID = hashURIToken(
+      aliceWallet.classicAddress,
+      `ipfs://${random}`
+    )
+
+    console.log(uriTokenID)
+
+    const param1 = new iHookParamEntry(
+      new iHookParamName('OP'),
+      new iHookParamValue('B')
+    )
+    const param2 = new iHookParamEntry(
+      new iHookParamName('ID'),
+      new iHookParamValue(
+        '35D1168C6D5B107A3B884B055D0657E36196882AAA16C68E345AC998717E86B3',
+        true
+      )
+    )
+    const builtTx: Payment = {
+      TransactionType: 'Payment',
+      Account: aliceWallet.classicAddress,
+      Destination: hookWallet.classicAddress,
+      Amount: xrpToDrops('6'),
+      HookParameters: [param1.toXrpl(), param2.toXrpl()],
+    }
+    const result = await Xrpld.submit(testContext.client, {
+      wallet: aliceWallet,
+      tx: builtTx,
+    })
+    const hookExecutions = await ExecutionUtility.getHookExecutionsFromMeta(
+      testContext.client,
+      result.meta as TransactionMetadata
+    )
+    console.log(hookExecutions.executions[0].HookReturnString)
+
+    await close(testContext.client)
+
+    const currentState = await StateUtility.getHookState(
+      testContext.client,
+      testContext.hook1.classicAddress,
+      padHexString(xrpAddressToHex(testContext.hook1.classicAddress)),
+      hexNamespace('display')
+    )
+
+    console.log(hexToUInt64(flipHex(currentState.HookStateData)))
+
+    console.log(padHexString(currentState.HookStateData, 64))
+    console.log(hexNamespace('bids'))
+
+    const state = await StateUtility.getHookState(
+      testContext.client,
+      testContext.hook1.classicAddress,
+      padHexString(currentState.HookStateData, 64),
+      hexNamespace('bids')
+    )
+
+    console.log(decodeModel(state.HookStateData, DisplayModel))
+
+    for (let index = 0; index < 30; index++) {
+      await close(testContext.client)
+    }
+
+    const tx2Param1 = new iHookParamEntry(
+      new iHookParamName('OP'),
+      new iHookParamValue('U')
+    )
+    const builtTx2: Invoke = {
+      TransactionType: 'Invoke',
+      Account: aliceWallet.classicAddress,
+      Destination: hookWallet.classicAddress,
+      HookParameters: [tx2Param1.toXrpl()],
+    }
+    const result2 = await Xrpld.submit(testContext.client, {
+      wallet: aliceWallet,
+      tx: builtTx2,
+    })
+    const hookExecutions2 = await ExecutionUtility.getHookExecutionsFromMeta(
+      testContext.client,
+      result2.meta as TransactionMetadata
+    )
+    console.log(hookExecutions2.executions[0].HookReturnString)
+
+    await close(testContext.client)
+  })
+})
diff --git a/test/integration-c/display/models/DisplayModel.ts b/test/integration-c/display/models/DisplayModel.ts
new file mode 100644
index 0000000..226a003
--- /dev/null
+++ b/test/integration-c/display/models/DisplayModel.ts
@@ -0,0 +1,31 @@
+import {
+  BaseModel,
+  Hash256,
+  Metadata,
+  UInt64,
+} from '@transia/hooks-toolkit/dist/npm/src/libs/binary-models'
+
+export class DisplayModel extends BaseModel {
+  id: Hash256
+  lastLedger: UInt64
+
+  constructor(id: Hash256, lastLedger: UInt64) {
+    super()
+    this.id = id
+    this.lastLedger = lastLedger
+  }
+
+  getMetadata(): Metadata {
+    return [
+      { field: 'id', type: 'hash256' },
+      { field: 'lastLedger', type: 'uint64' },
+    ]
+  }
+
+  toJSON() {
+    return {
+      id: this.id,
+      lastLedger: this.lastLedger,
+    }
+  }
+}