diff --git a/justfile b/justfile
index ed514957a..9d38fc0e9 100644
--- a/justfile
+++ b/justfile
@@ -10,7 +10,7 @@ test TEST_NAME:
     cargo test-sbf --features enable-gpl --  {{ TEST_NAME }}
 
 test-all:
-    (cd ./programs/openbook-v2 && RUST_LOG=ERROR cargo +1.70.0 test-sbf --features enable-gpl)
+    (cd ./programs/openbook-v2 && RUST_LOG=ERROR cargo test-sbf --features enable-gpl)
 
 test-dev:
     (find programs) | entr -s 'just test-all'
@@ -19,6 +19,7 @@ idl:
     anchor build --arch sbf -- --features enable-gpl
     bash {{ justfile_directory() }}/idl-fixup.sh
     cp -v ./target/types/openbook_v2.ts ./ts/client/src/openbook_v2.ts
+    yarn lint --fix
     yarn format
 
 fuzz:
diff --git a/lib/client/src/client.rs b/lib/client/src/client.rs
index aabeb564e..b1eee5adb 100644
--- a/lib/client/src/client.rs
+++ b/lib/client/src/client.rs
@@ -131,9 +131,17 @@ impl OpenBookClient {
                 Some(tuple) => tuple.1.account_num + 1,
                 None => 0u32,
             };
-            Self::create_open_orders_account(client, market, owner, payer, None, account_num)
-                .await
-                .context("Failed to create account...")?;
+            Self::create_open_orders_account(
+                client,
+                market,
+                owner,
+                payer,
+                None,
+                account_num,
+                openbook_account_name,
+            )
+            .await
+            .context("Failed to create account...")?;
         }
         let openbook_account_tuples =
             fetch_openbook_accounts(&rpc, program, owner.pubkey()).await?;
@@ -191,6 +199,7 @@ impl OpenBookClient {
         payer: &Keypair, // pays the SOL for the new account
         delegate: Option<Pubkey>,
         account_num: u32,
+        name: &str,
     ) -> anyhow::Result<(Pubkey, Signature)> {
         let open_orders_indexer = Pubkey::find_program_address(
             &[
@@ -206,7 +215,6 @@ impl OpenBookClient {
             &[
                 b"OpenOrdersAccount".as_ref(),
                 owner.pubkey().as_ref(),
-                market.as_ref(),
                 &account_num.to_le_bytes(),
             ],
             &openbook_v2::id(),
@@ -228,7 +236,9 @@ impl OpenBookClient {
                 None,
             ),
             data: anchor_lang::InstructionData::data(
-                &openbook_v2::instruction::CreateOpenOrdersAccount {},
+                &openbook_v2::instruction::CreateOpenOrdersAccount {
+                    name: name.to_string(),
+                },
             ),
         };
 
@@ -535,6 +545,7 @@ impl OpenBookClient {
                 anchor_lang::ToAccountMetas::to_account_metas(
                     &openbook_v2::accounts::SettleFunds {
                         owner: self.owner(),
+                        penalty_payer: self.owner(),
                         open_orders_account: self.open_orders_account,
                         market: market_address,
                         market_authority: market.market_authority,
diff --git a/lib/client/src/jup.rs b/lib/client/src/jup.rs
index 518142996..4c289a54f 100644
--- a/lib/client/src/jup.rs
+++ b/lib/client/src/jup.rs
@@ -205,6 +205,7 @@ impl Amm for OpenBookMarket {
 
         let accounts = PlaceTakeOrder {
             signer: *user_transfer_authority,
+            penalty_payer: *user_transfer_authority,
             market: self.key,
             market_authority: self.market.market_authority,
             bids: self.market.bids,
diff --git a/programs/openbook-v2/fuzz/src/lib.rs b/programs/openbook-v2/fuzz/src/lib.rs
index e854d5bb6..c2d668ee1 100644
--- a/programs/openbook-v2/fuzz/src/lib.rs
+++ b/programs/openbook-v2/fuzz/src/lib.rs
@@ -200,12 +200,7 @@ impl FuzzContext {
             .0;
 
             let open_orders = Pubkey::find_program_address(
-                &[
-                    b"OpenOrders".as_ref(),
-                    owner.as_ref(),
-                    self.market.as_ref(),
-                    &1_u32.to_le_bytes(),
-                ],
+                &[b"OpenOrders".as_ref(), owner.as_ref(), &1_u32.to_le_bytes()],
                 &openbook_v2::ID,
             )
             .0;
@@ -241,7 +236,9 @@ impl FuzzContext {
                 market: self.market,
                 system_program: system_program::ID,
             };
-            let data = openbook_v2::instruction::CreateOpenOrdersAccount {};
+            let data = openbook_v2::instruction::CreateOpenOrdersAccount {
+                name: "fuzz test".to_string(),
+            };
             process_instruction(&mut self.state, &data, &accounts, &[]).unwrap();
 
             UserAccounts {
@@ -472,6 +469,7 @@ impl FuzzContext {
 
         let accounts = openbook_v2::accounts::PlaceTakeOrder {
             signer: user.owner,
+            penalty_payer: user.owner,
             user_base_account: user.base_vault,
             user_quote_account: user.quote_vault,
             market: self.market,
@@ -767,6 +765,7 @@ impl FuzzContext {
 
         let accounts = openbook_v2::accounts::SettleFunds {
             owner: user.owner,
+            penalty_payer: user.owner,
             open_orders_account: user.open_orders,
             user_base_account: user.base_vault,
             user_quote_account: user.quote_vault,
diff --git a/programs/openbook-v2/src/accounts_ix/close_open_orders_account.rs b/programs/openbook-v2/src/accounts_ix/close_open_orders_account.rs
index 591fcd100..bf5646bb5 100644
--- a/programs/openbook-v2/src/accounts_ix/close_open_orders_account.rs
+++ b/programs/openbook-v2/src/accounts_ix/close_open_orders_account.rs
@@ -11,7 +11,7 @@ pub struct CloseOpenOrdersAccount<'info> {
         seeds = [b"OpenOrdersIndexer".as_ref(), owner.key().as_ref()],
         bump = open_orders_indexer.bump,
         realloc = OpenOrdersIndexer::space(open_orders_indexer.addresses.len()-1),
-        realloc::payer = payer,
+        realloc::payer = sol_destination,
         realloc::zero = false,
     )]
     pub open_orders_indexer: Account<'info, OpenOrdersIndexer>,
diff --git a/programs/openbook-v2/src/accounts_ix/create_market.rs b/programs/openbook-v2/src/accounts_ix/create_market.rs
index d1694e1ab..9d1e8a858 100644
--- a/programs/openbook-v2/src/accounts_ix/create_market.rs
+++ b/programs/openbook-v2/src/accounts_ix/create_market.rs
@@ -48,6 +48,7 @@ pub struct CreateMarket<'info> {
     )]
     pub market_quote_vault: Account<'info, TokenAccount>,
 
+    #[account(constraint = base_mint.key() != quote_mint.key())]
     pub base_mint: Box<Account<'info, Mint>>,
     pub quote_mint: Box<Account<'info, Mint>>,
 
diff --git a/programs/openbook-v2/src/accounts_ix/create_open_orders_account.rs b/programs/openbook-v2/src/accounts_ix/create_open_orders_account.rs
index c1f2076b4..b366ec431 100644
--- a/programs/openbook-v2/src/accounts_ix/create_open_orders_account.rs
+++ b/programs/openbook-v2/src/accounts_ix/create_open_orders_account.rs
@@ -20,7 +20,7 @@ pub struct CreateOpenOrdersAccount<'info> {
     pub open_orders_indexer: Account<'info, OpenOrdersIndexer>,
     #[account(
         init,
-        seeds = [b"OpenOrders".as_ref(), owner.key().as_ref(), market.key().as_ref(), &(open_orders_indexer.created_counter + 1).to_le_bytes()],
+        seeds = [b"OpenOrders".as_ref(), owner.key().as_ref(), &(open_orders_indexer.created_counter + 1).to_le_bytes()],
         bump,
         payer = payer,
         space = OpenOrdersAccount::space(),
diff --git a/programs/openbook-v2/src/accounts_ix/place_take_order.rs b/programs/openbook-v2/src/accounts_ix/place_take_order.rs
index 274cb22d4..f41a239ad 100644
--- a/programs/openbook-v2/src/accounts_ix/place_take_order.rs
+++ b/programs/openbook-v2/src/accounts_ix/place_take_order.rs
@@ -8,6 +8,8 @@ use anchor_spl::token::{Token, TokenAccount};
 pub struct PlaceTakeOrder<'info> {
     #[account(mut)]
     pub signer: Signer<'info>,
+    #[account(mut)]
+    pub penalty_payer: Signer<'info>,
 
     #[account(
         mut,
diff --git a/programs/openbook-v2/src/accounts_ix/settle_funds.rs b/programs/openbook-v2/src/accounts_ix/settle_funds.rs
index dea24212c..467c9b615 100644
--- a/programs/openbook-v2/src/accounts_ix/settle_funds.rs
+++ b/programs/openbook-v2/src/accounts_ix/settle_funds.rs
@@ -6,6 +6,9 @@ use anchor_spl::token::{Token, TokenAccount};
 pub struct SettleFunds<'info> {
     #[account(mut)]
     pub owner: Signer<'info>,
+    #[account(mut)]
+    pub penalty_payer: Signer<'info>,
+
     #[account(
         mut,
         has_one = owner,
diff --git a/programs/openbook-v2/src/accounts_ix/settle_funds_expired.rs b/programs/openbook-v2/src/accounts_ix/settle_funds_expired.rs
index d9577cb5f..0181f0228 100644
--- a/programs/openbook-v2/src/accounts_ix/settle_funds_expired.rs
+++ b/programs/openbook-v2/src/accounts_ix/settle_funds_expired.rs
@@ -8,7 +8,9 @@ use anchor_spl::token::{Token, TokenAccount};
 pub struct SettleFundsExpired<'info> {
     pub close_market_admin: Signer<'info>,
     #[account(mut)]
-    pub payer: Signer<'info>,
+    pub owner: Signer<'info>,
+    #[account(mut)]
+    pub penalty_payer: Signer<'info>,
     #[account(
         mut,
         has_one = market,
@@ -53,7 +55,8 @@ pub struct SettleFundsExpired<'info> {
 impl<'info> SettleFundsExpired<'info> {
     pub fn to_settle_funds_accounts(&self) -> SettleFunds<'info> {
         SettleFunds {
-            owner: self.payer.clone(),
+            owner: self.owner.clone(),
+            penalty_payer: self.penalty_payer.clone(),
             open_orders_account: self.open_orders_account.clone(),
             market: self.market.clone(),
             market_authority: self.market_authority.clone(),
diff --git a/programs/openbook-v2/src/instructions/consume_events.rs b/programs/openbook-v2/src/instructions/consume_events.rs
index 6ca974ee1..af05c378f 100644
--- a/programs/openbook-v2/src/instructions/consume_events.rs
+++ b/programs/openbook-v2/src/instructions/consume_events.rs
@@ -14,11 +14,8 @@ pub const MAX_EVENTS_CONSUME: usize = 8;
 ///
 /// Message and return Ok() if it's missing, to lock in successful processing
 /// of previous events.
-///
-/// Special handling for testing, where events for accounts with bad
-/// owners (most likely due to force closure of the account) are being skipped.
 macro_rules! load_open_orders_account {
-    ($name:ident, $key:expr, $ais:expr, $event_heap:expr) => {
+    ($name:ident, $key:expr, $ais:expr) => {
         let loader = match $ais.iter().find(|ai| ai.key == &$key) {
             None => {
                 msg!(
@@ -30,17 +27,8 @@ macro_rules! load_open_orders_account {
             }
 
             Some(ai) => {
-                if ai.owner != &crate::id() {
-                    msg!(
-                        "OpenOrdersAccount ({}) not owned by openbook program",
-                        stringify!($name)
-                    );
-                    $event_heap.pop_front()?;
-                    continue;
-                }
-
-                let mal: AccountLoader<OpenOrdersAccount> = AccountLoader::try_from(ai)?;
-                mal
+                let ooa: AccountLoader<OpenOrdersAccount> = AccountLoader::try_from(ai)?;
+                ooa
             }
         };
         let mut $name = loader.load_mut()?;
@@ -73,12 +61,12 @@ pub fn consume_events(
         match EventType::try_from(event.event_type).map_err(|_| error!(OpenBookError::SomeError))? {
             EventType::Fill => {
                 let fill: &FillEvent = cast_ref(event);
-                load_open_orders_account!(maker, fill.maker, remaining_accs, event_heap);
+                load_open_orders_account!(maker, fill.maker, remaining_accs);
                 maker.execute_maker(&mut market, fill);
             }
             EventType::Out => {
                 let out: &OutEvent = cast_ref(event);
-                load_open_orders_account!(owner, out.owner, remaining_accs, event_heap);
+                load_open_orders_account!(owner, out.owner, remaining_accs);
                 owner.cancel_order(out.owner_slot as usize, out.quantity, *market);
             }
         }
diff --git a/programs/openbook-v2/src/instructions/create_open_orders_account.rs b/programs/openbook-v2/src/instructions/create_open_orders_account.rs
index 768f6b9b8..44421fd95 100644
--- a/programs/openbook-v2/src/instructions/create_open_orders_account.rs
+++ b/programs/openbook-v2/src/instructions/create_open_orders_account.rs
@@ -1,9 +1,13 @@
 use crate::accounts_ix::CreateOpenOrdersAccount;
 use crate::pubkey_option::NonZeroKey;
 use crate::state::*;
+use crate::util::fill_from_str;
 use anchor_lang::prelude::*;
 
-pub fn create_open_orders_account(ctx: Context<CreateOpenOrdersAccount>) -> Result<()> {
+pub fn create_open_orders_account(
+    ctx: Context<CreateOpenOrdersAccount>,
+    name: String,
+) -> Result<()> {
     let mut account = ctx.accounts.open_orders_account.load_init()?;
     let indexer = &mut ctx.accounts.open_orders_indexer;
     indexer
@@ -11,6 +15,7 @@ pub fn create_open_orders_account(ctx: Context<CreateOpenOrdersAccount>) -> Resu
         .push(ctx.accounts.open_orders_account.key());
     indexer.created_counter += 1;
 
+    account.name = fill_from_str(&name)?;
     account.account_num = indexer.created_counter;
     account.market = ctx.accounts.market.key();
     account.bump = *ctx.bumps.get("open_orders_account").unwrap();
diff --git a/programs/openbook-v2/src/instructions/edit_order.rs b/programs/openbook-v2/src/instructions/edit_order.rs
index a583de644..762819c4d 100644
--- a/programs/openbook-v2/src/instructions/edit_order.rs
+++ b/programs/openbook-v2/src/instructions/edit_order.rs
@@ -27,6 +27,7 @@ pub fn edit_order<'info>(
     )?;
 
     let filled_amount = expected_cancel_size - leaf_node_quantity;
+    // note that order.max_base_lots is checked to be > 0 inside `place_order`
     if order.max_base_lots > filled_amount {
         // Do not reduce max_quote_lots_including_fees as implicitly it's limited by max_base_lots.
         order.max_base_lots -= filled_amount;
diff --git a/programs/openbook-v2/src/instructions/place_order.rs b/programs/openbook-v2/src/instructions/place_order.rs
index 95ed5de59..15428c5aa 100644
--- a/programs/openbook-v2/src/instructions/place_order.rs
+++ b/programs/openbook-v2/src/instructions/place_order.rs
@@ -86,10 +86,10 @@ pub fn place_order(ctx: Context<PlaceOrder>, order: Order, limit: u8) -> Result<
         }
 
         Side::Ask => {
-            let free_assets_native = position.base_free_native;
+            let free_base = position.base_free_native;
             let max_base_native = total_base_taken_native + posted_base_native;
 
-            let free_qty_to_lock = cmp::min(max_base_native, free_assets_native);
+            let free_qty_to_lock = cmp::min(max_base_native, free_base);
             let deposit_amount = max_base_native - free_qty_to_lock;
 
             // Update market deposit total
diff --git a/programs/openbook-v2/src/instructions/place_take_order.rs b/programs/openbook-v2/src/instructions/place_take_order.rs
index 20074559c..2e80b98d7 100644
--- a/programs/openbook-v2/src/instructions/place_take_order.rs
+++ b/programs/openbook-v2/src/instructions/place_take_order.rs
@@ -93,7 +93,7 @@ pub fn place_take_order<'info>(
         system_program_transfer(
             PENALTY_EVENT_HEAP,
             &ctx.accounts.system_program,
-            &ctx.accounts.signer,
+            &ctx.accounts.penalty_payer,
             &ctx.accounts.market,
         )?;
     }
diff --git a/programs/openbook-v2/src/instructions/set_delegate.rs b/programs/openbook-v2/src/instructions/set_delegate.rs
index bad99d496..a2f25422d 100644
--- a/programs/openbook-v2/src/instructions/set_delegate.rs
+++ b/programs/openbook-v2/src/instructions/set_delegate.rs
@@ -18,11 +18,7 @@ pub fn set_delegate(ctx: Context<SetDelegate>) -> Result<()> {
 
     emit!(SetDelegateLog {
         open_orders_account: ctx.accounts.open_orders_account.key(),
-        delegate: ctx
-            .accounts
-            .delegate_account
-            .as_ref()
-            .map(|account| account.key()),
+        delegate: delegate_account.into()
     });
 
     Ok(())
diff --git a/programs/openbook-v2/src/instructions/settle_funds.rs b/programs/openbook-v2/src/instructions/settle_funds.rs
index 0692ff758..7f19b87e8 100644
--- a/programs/openbook-v2/src/instructions/settle_funds.rs
+++ b/programs/openbook-v2/src/instructions/settle_funds.rs
@@ -38,7 +38,7 @@ pub fn settle_funds<'info>(ctx: Context<'_, '_, '_, 'info, SettleFunds<'info>>)
         system_program_transfer(
             pa.penalty_heap_count * PENALTY_EVENT_HEAP,
             &ctx.accounts.system_program,
-            &ctx.accounts.owner,
+            &ctx.accounts.penalty_payer,
             &ctx.accounts.market,
         )?;
         pa.penalty_heap_count = 0;
diff --git a/programs/openbook-v2/src/lib.rs b/programs/openbook-v2/src/lib.rs
index f758aeef1..df05d33df 100644
--- a/programs/openbook-v2/src/lib.rs
+++ b/programs/openbook-v2/src/lib.rs
@@ -86,9 +86,12 @@ pub mod openbook_v2 {
     }
 
     /// Create an [`OpenOrdersAccount`](crate::state::OpenOrdersAccount).
-    pub fn create_open_orders_account(ctx: Context<CreateOpenOrdersAccount>) -> Result<()> {
+    pub fn create_open_orders_account(
+        ctx: Context<CreateOpenOrdersAccount>,
+        name: String,
+    ) -> Result<()> {
         #[cfg(feature = "enable-gpl")]
-        instructions::create_open_orders_account(ctx)?;
+        instructions::create_open_orders_account(ctx, name)?;
         Ok(())
     }
 
diff --git a/programs/openbook-v2/src/pubkey_option.rs b/programs/openbook-v2/src/pubkey_option.rs
index bd0a3871b..e35a957a5 100644
--- a/programs/openbook-v2/src/pubkey_option.rs
+++ b/programs/openbook-v2/src/pubkey_option.rs
@@ -2,7 +2,7 @@ use anchor_lang::prelude::*;
 use bytemuck::Zeroable;
 use std::convert::From;
 
-/// Like `Option`, but implemented for `Pubkey`.
+/// Like `Option`, but implemented for `Pubkey` to be used with `zero_copy`
 #[zero_copy]
 #[derive(AnchorSerialize, AnchorDeserialize, Debug, Default, PartialEq)]
 pub struct NonZeroPubkeyOption {
diff --git a/programs/openbook-v2/src/state/open_orders_account.rs b/programs/openbook-v2/src/state/open_orders_account.rs
index 658367c1f..d8c3211a5 100644
--- a/programs/openbook-v2/src/state/open_orders_account.rs
+++ b/programs/openbook-v2/src/state/open_orders_account.rs
@@ -375,6 +375,7 @@ impl Position {
             && self.quote_free_native == 0
             && self.locked_maker_fees == 0
             && self.referrer_rebates_available == 0
+            && self.penalty_heap_count == 0
     }
 }
 
diff --git a/programs/openbook-v2/src/state/open_orders_indexer.rs b/programs/openbook-v2/src/state/open_orders_indexer.rs
index af91cfda8..0050a01e9 100644
--- a/programs/openbook-v2/src/state/open_orders_indexer.rs
+++ b/programs/openbook-v2/src/state/open_orders_indexer.rs
@@ -1,6 +1,4 @@
 use anchor_lang::prelude::*;
-use static_assertions::const_assert_eq;
-use std::mem::size_of;
 
 #[account]
 #[derive(Default)]
diff --git a/programs/openbook-v2/tests/cases/test_permissioned.rs b/programs/openbook-v2/tests/cases/test_permissioned.rs
index 8afb12a9b..94c70c22f 100644
--- a/programs/openbook-v2/tests/cases/test_permissioned.rs
+++ b/programs/openbook-v2/tests/cases/test_permissioned.rs
@@ -366,7 +366,7 @@ async fn test_close_market_admin() -> Result<(), TransportError> {
     let settle_funds_expired_ix = SettleFundsExpiredInstruction {
         close_market_admin,
         market,
-        payer,
+        owner: payer,
         open_orders_account: account_2,
         market_base_vault,
         market_quote_vault,
diff --git a/programs/openbook-v2/tests/program_test/client.rs b/programs/openbook-v2/tests/program_test/client.rs
index a9d696b5f..36c434cf8 100644
--- a/programs/openbook-v2/tests/program_test/client.rs
+++ b/programs/openbook-v2/tests/program_test/client.rs
@@ -184,7 +184,9 @@ impl ClientInstruction for CreateOpenOrdersAccountInstruction {
         _account_loader: impl ClientAccountLoader + 'async_trait,
     ) -> (Self::Accounts, instruction::Instruction) {
         let program_id = openbook_v2::id();
-        let instruction = openbook_v2::instruction::CreateOpenOrdersAccount {};
+        let instruction = openbook_v2::instruction::CreateOpenOrdersAccount {
+            name: "test".to_string(),
+        };
 
         let open_orders_indexer = Pubkey::find_program_address(
             &[b"OpenOrdersIndexer".as_ref(), self.owner.pubkey().as_ref()],
@@ -196,7 +198,6 @@ impl ClientInstruction for CreateOpenOrdersAccountInstruction {
             &[
                 b"OpenOrders".as_ref(),
                 self.owner.pubkey().as_ref(),
-                self.market.as_ref(),
                 &self.account_num.to_le_bytes(),
             ],
             &program_id,
@@ -250,7 +251,6 @@ impl ClientInstruction for CloseOpenOrdersAccountInstruction {
             &[
                 b"OpenOrders".as_ref(),
                 self.owner.pubkey().as_ref(),
-                self.market.as_ref(),
                 &self.account_num.to_le_bytes(),
             ],
             &program_id,
@@ -587,6 +587,7 @@ impl ClientInstruction for PlaceTakeOrderInstruction {
             oracle_a: market.oracle_a.into(),
             oracle_b: market.oracle_b.into(),
             signer: self.signer.pubkey(),
+            penalty_payer: self.signer.pubkey(),
             user_base_account: self.user_base_account,
             user_quote_account: self.user_quote_account,
             market_base_vault: self.market_base_vault,
@@ -831,6 +832,7 @@ impl ClientInstruction for SettleFundsInstruction {
         let market: Market = account_loader.load(&self.market).await.unwrap();
         let accounts = Self::Accounts {
             owner: self.owner.pubkey(),
+            penalty_payer: self.owner.pubkey(),
             open_orders_account: self.open_orders_account,
             market: self.market,
             market_authority: market.market_authority,
@@ -855,7 +857,7 @@ impl ClientInstruction for SettleFundsInstruction {
 #[derive(Clone)]
 pub struct SettleFundsExpiredInstruction {
     pub close_market_admin: TestKeypair,
-    pub payer: TestKeypair,
+    pub owner: TestKeypair,
     pub open_orders_account: Pubkey,
     pub market: Pubkey,
     pub market_base_vault: Pubkey,
@@ -877,7 +879,8 @@ impl ClientInstruction for SettleFundsExpiredInstruction {
         let market: Market = account_loader.load(&self.market).await.unwrap();
         let accounts = Self::Accounts {
             close_market_admin: self.close_market_admin.pubkey(),
-            payer: self.payer.pubkey(),
+            owner: self.owner.pubkey(),
+            penalty_payer: self.owner.pubkey(),
             open_orders_account: self.open_orders_account,
             market: self.market,
             market_authority: market.market_authority,
@@ -895,7 +898,7 @@ impl ClientInstruction for SettleFundsExpiredInstruction {
     }
 
     fn signers(&self) -> Vec<TestKeypair> {
-        vec![self.close_market_admin, self.payer]
+        vec![self.close_market_admin, self.owner]
     }
 }
 
diff --git a/ts/client/src/client.ts b/ts/client/src/client.ts
index 5876183d4..f7828f026 100644
--- a/ts/client/src/client.ts
+++ b/ts/client/src/client.ts
@@ -327,7 +327,6 @@ export class OpenBookV2Client {
       [
         Buffer.from('OpenOrders'),
         this.walletPk.toBuffer(),
-        market.toBuffer(),
         accountIndex.toArrayLike(Buffer, 'le', 4),
       ],
       this.programId,
diff --git a/ts/client/src/openbook_v2.ts b/ts/client/src/openbook_v2.ts
index c0a22a1ec..785e8e3a2 100644
--- a/ts/client/src/openbook_v2.ts
+++ b/ts/client/src/openbook_v2.ts
@@ -302,7 +302,12 @@ export interface OpenbookV2 {
           isSigner: false;
         },
       ];
-      args: [];
+      args: [
+        {
+          name: 'name';
+          type: 'string';
+        },
+      ];
     },
     {
       name: 'closeOpenOrdersAccount';
@@ -810,6 +815,11 @@ export interface OpenbookV2 {
           isMut: true;
           isSigner: true;
         },
+        {
+          name: 'penaltyPayer';
+          isMut: true;
+          isSigner: true;
+        },
         {
           name: 'market';
           isMut: true;
@@ -1246,6 +1256,11 @@ export interface OpenbookV2 {
           isMut: true;
           isSigner: true;
         },
+        {
+          name: 'penaltyPayer';
+          isMut: true;
+          isSigner: true;
+        },
         {
           name: 'openOrdersAccount';
           isMut: true;
@@ -1313,7 +1328,12 @@ export interface OpenbookV2 {
           isSigner: true;
         },
         {
-          name: 'payer';
+          name: 'owner';
+          isMut: true;
+          isSigner: true;
+        },
+        {
+          name: 'penaltyPayer';
           isMut: true;
           isSigner: true;
         },
@@ -2006,7 +2026,9 @@ export interface OpenbookV2 {
   types: [
     {
       name: 'NonZeroPubkeyOption';
-      docs: ['Like `Option`, but implemented for `Pubkey`.'];
+      docs: [
+        'Like `Option`, but implemented for `Pubkey` to be used with `zero_copy`',
+      ];
       type: {
         kind: 'struct';
         fields: [
@@ -3818,7 +3840,12 @@ export const IDL: OpenbookV2 = {
           isSigner: false,
         },
       ],
-      args: [],
+      args: [
+        {
+          name: 'name',
+          type: 'string',
+        },
+      ],
     },
     {
       name: 'closeOpenOrdersAccount',
@@ -4326,6 +4353,11 @@ export const IDL: OpenbookV2 = {
           isMut: true,
           isSigner: true,
         },
+        {
+          name: 'penaltyPayer',
+          isMut: true,
+          isSigner: true,
+        },
         {
           name: 'market',
           isMut: true,
@@ -4762,6 +4794,11 @@ export const IDL: OpenbookV2 = {
           isMut: true,
           isSigner: true,
         },
+        {
+          name: 'penaltyPayer',
+          isMut: true,
+          isSigner: true,
+        },
         {
           name: 'openOrdersAccount',
           isMut: true,
@@ -4829,7 +4866,12 @@ export const IDL: OpenbookV2 = {
           isSigner: true,
         },
         {
-          name: 'payer',
+          name: 'owner',
+          isMut: true,
+          isSigner: true,
+        },
+        {
+          name: 'penaltyPayer',
           isMut: true,
           isSigner: true,
         },
@@ -5522,7 +5564,9 @@ export const IDL: OpenbookV2 = {
   types: [
     {
       name: 'NonZeroPubkeyOption',
-      docs: ['Like `Option`, but implemented for `Pubkey`.'],
+      docs: [
+        'Like `Option`, but implemented for `Pubkey` to be used with `zero_copy`',
+      ],
       type: {
         kind: 'struct',
         fields: [