diff --git a/solana/pyth2wormhole/Cargo.lock b/solana/pyth2wormhole/Cargo.lock
index 67482c5f..8a53dca7 100644
--- a/solana/pyth2wormhole/Cargo.lock
+++ b/solana/pyth2wormhole/Cargo.lock
@@ -255,6 +255,7 @@ dependencies = [
  "sha3",
  "solana-program",
  "solitaire",
+ "solitaire-client",
  "wasm-bindgen",
 ]
 
@@ -2078,6 +2079,7 @@ name = "pyth2wormhole-client"
 version = "0.1.0"
 dependencies = [
  "borsh",
+ "bridge",
  "clap 3.0.0-beta.2",
  "env_logger",
  "log",
diff --git a/solana/pyth2wormhole/client/Cargo.toml b/solana/pyth2wormhole/client/Cargo.toml
index 906b0c11..004a57de 100644
--- a/solana/pyth2wormhole/client/Cargo.toml
+++ b/solana/pyth2wormhole/client/Cargo.toml
@@ -6,13 +6,14 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-default = ["pyth2wormhole/client"]
+default = ["pyth2wormhole/client", "bridge/client"]
 
 [dependencies]
 borsh = "0.8.1"
 clap = "3.0.0-beta.2" # This beta assimilates structopt into clap
 env_logger = "0.8.4"
 log = "0.4.14"
+bridge = {path = "../../bridge/program"}
 pyth2wormhole = {path = "../program"}
 shellexpand = "2.1.0"
 solana-client = "=1.7.0"
diff --git a/solana/pyth2wormhole/client/src/cli.rs b/solana/pyth2wormhole/client/src/cli.rs
index 4f755110..efcce7f3 100644
--- a/solana/pyth2wormhole/client/src/cli.rs
+++ b/solana/pyth2wormhole/client/src/cli.rs
@@ -24,7 +24,11 @@ pub struct Cli {
     pub payer: String,
     #[clap(long, default_value = "http://localhost:8899")]
     pub rpc_url: String,
+    #[clap(long)]
     pub p2w_addr: Pubkey,
+    /// The bridge program account
+    #[clap(long = "wh-prog")]
+    pub wh_prog: Pubkey,
     #[clap(subcommand)]
     pub action: Action,
 }
@@ -35,16 +39,18 @@ pub enum Action {
     Init {
         #[clap(long = "owner")]
         new_owner_addr: Pubkey,
-        #[clap(long = "wormhole")]
-        wormhole_addr: Pubkey,
-        #[clap(long = "pyth")]
+        #[clap(long = "pyth-owner")]
         pyth_owner_addr: Pubkey,
     },
     #[clap(
-        about = "Use an existing pyth2wormhole program to forward product price information to another chain"
+        about = "Use an existing pyth2wormhole program to attest product price information to another chain"
     )]
-    Forward {
+    Attest {
         #[clap(long = "product")]
         product_addr: Pubkey,
+        #[clap(long = "price")]
+        price_addr: Pubkey,
+        #[clap(long)]
+	nonce: u32,
     },
 }
diff --git a/solana/pyth2wormhole/client/src/main.rs b/solana/pyth2wormhole/client/src/main.rs
index f169e258..b0455295 100644
--- a/solana/pyth2wormhole/client/src/main.rs
+++ b/solana/pyth2wormhole/client/src/main.rs
@@ -4,16 +4,60 @@ use borsh::BorshSerialize;
 use clap::Clap;
 use log::LevelFilter;
 use solana_client::rpc_client::RpcClient;
-use solana_program::{hash::Hash, pubkey::Pubkey};
-use solana_sdk::{
-    commitment_config::CommitmentConfig, signature::read_keypair_file, transaction::Transaction,
+use solana_program::{
+    hash::Hash,
+    instruction::{
+        AccountMeta,
+        Instruction,
+    },
+    pubkey::Pubkey,
+    system_program,
+    sysvar::{
+        clock,
+        rent,
+    },
+};
+use solana_sdk::{
+    commitment_config::CommitmentConfig,
+    signature::read_keypair_file,
+    transaction::Transaction,
+};
+use solitaire::{
+    processors::seeded::Seeded,
+    AccountState,
+    Derive,
+    Info,
+};
+use solitaire_client::{
+    AccEntry,
+    Keypair,
+    SolSigner,
+    ToInstruction,
 };
-use solitaire::{AccountState, processors::seeded::Seeded};
-use solitaire_client::{AccEntry, Keypair, SolSigner, ToInstruction};
 
-use cli::{Action, Cli};
+use cli::{
+    Action,
+    Cli,
+};
 
-use pyth2wormhole::{config::P2WConfigAccount, initialize::InitializeAccounts, Pyth2WormholeConfig};
+use bridge::{
+    accounts::{
+        Bridge,
+        FeeCollector,
+        Sequence,
+        SequenceDerivationData,
+    },
+    types::ConsistencyLevel,
+    CHAIN_ID_SOLANA,
+};
+
+use pyth2wormhole::{
+    config::P2WConfigAccount,
+    initialize::InitializeAccounts,
+    types::PriceAttestation,
+    AttestData,
+    Pyth2WormholeConfig,
+};
 
 pub type ErrBox = Box<dyn std::error::Error>;
 
@@ -22,7 +66,7 @@ fn main() -> Result<(), ErrBox> {
     init_logging(cli.log_level);
 
     let payer = read_keypair_file(&*shellexpand::tilde(&cli.payer))?;
-    let rpc_client = RpcClient::new_with_commitment(cli.rpc_url, CommitmentConfig::processed());
+    let rpc_client = RpcClient::new_with_commitment(cli.rpc_url, CommitmentConfig::finalized());
 
     let p2w_addr = cli.p2w_addr;
 
@@ -31,19 +75,28 @@ fn main() -> Result<(), ErrBox> {
     let tx = match cli.action {
         Action::Init {
             new_owner_addr,
-            wormhole_addr,
             pyth_owner_addr,
         } => handle_init(
             payer,
             p2w_addr,
             new_owner_addr,
-            wormhole_addr,
+            cli.wh_prog,
             pyth_owner_addr,
             recent_blockhash,
         )?,
-        Action::Forward { product_addr: _ } => {
-            todo!()
-        }
+        Action::Attest {
+            product_addr,
+            price_addr,
+            nonce,
+        } => handle_attest(
+            &rpc_client,
+            payer,
+            p2w_addr,
+            product_addr,
+            price_addr,
+            nonce,
+            recent_blockhash,
+        )?,
     };
 
     rpc_client.send_and_confirm_transaction_with_spinner(&tx)?;
@@ -55,7 +108,7 @@ fn handle_init(
     payer: Keypair,
     p2w_addr: Pubkey,
     new_owner_addr: Pubkey,
-    wormhole_addr: Pubkey,
+    wh_prog: Pubkey,
     pyth_owner_addr: Pubkey,
     recent_blockhash: Hash,
 ) -> Result<Transaction, ErrBox> {
@@ -65,17 +118,17 @@ fn handle_init(
 
     let accs = InitializeAccounts {
         payer: Signer(payer),
-        new_config: Unprivileged(<P2WConfigAccount<'_, {AccountState::Uninitialized}>>::key(None, &p2w_addr)),
+        new_config: Derived(p2w_addr),
     };
 
     let config = Pyth2WormholeConfig {
         owner: new_owner_addr,
-        wormhole_program_addr: wormhole_addr,
+        wh_prog: wh_prog,
         pyth_owner: pyth_owner_addr,
     };
-    let ix_data = pyth2wormhole::instruction::Instruction::Initialize(config);
+    let ix_data = (pyth2wormhole::instruction::Instruction::Initialize, config);
 
-    let (ix, signers) = accs.gen_client_ix(p2w_addr, ix_data.try_to_vec()?.as_slice())?;
+    let (ix, signers) = accs.to_ix(p2w_addr, ix_data.try_to_vec()?.as_slice())?;
 
     let tx_signed = Transaction::new_signed_with_payer::<Vec<&Keypair>>(
         &[ix],
@@ -86,6 +139,86 @@ fn handle_init(
     Ok(tx_signed)
 }
 
+fn handle_attest(
+    rpc: &RpcClient, // Needed for reading Pyth account data
+    payer: Keypair,
+    p2w_addr: Pubkey,
+    product_addr: Pubkey,
+    price_addr: Pubkey,
+    nonce: u32,
+    recent_blockhash: Hash,
+) -> Result<Transaction, ErrBox> {
+
+    let emitter_keypair = Keypair::new();
+    let message_keypair = Keypair::new();
+
+    // Derive dynamic seeded accounts
+    let seq_addr = Sequence::key(
+        &SequenceDerivationData {
+            emitter_key: &emitter_keypair.pubkey(),
+        },
+        &wh_prog,
+    );
+
+    // Arrange Attest accounts
+    let acc_metas = vec![
+        // payer
+        AccountMeta::new(payer.pubkey(), true),
+        // system_program
+        AccountMeta::new_readonly(system_program::id(), false),
+        // config
+        AccountMeta::new_readonly(
+            P2WConfigAccount::<{ AccountState::Initialized }>::key(None, &p2w_addr),
+            false,
+        ),
+        // pyth_product
+        AccountMeta::new_readonly(product_addr, false),
+        // pyth_price
+        AccountMeta::new_readonly(price_addr, false),
+        // clock
+        AccountMeta::new_readonly(clock::id(), false),
+
+	// wh_prog
+	AccountMeta::new_readonly(wh_prog, false),
+
+        // wh_bridge
+        AccountMeta::new(
+            Bridge::<{ AccountState::Initialized }>::key(None, &wh_prog),
+            false,
+        ),
+        // wh_message
+        AccountMeta::new(message_keypair.pubkey(), true),
+        // wh_emitter
+        AccountMeta::new_readonly(emitter_keypair.pubkey(), true),
+        // wh_sequence
+        AccountMeta::new(seq_addr, false),
+        // wh_fee_collector
+        AccountMeta::new(FeeCollector::<'_>::key(None, &wh_prog), false),
+        AccountMeta::new_readonly(rent::id(), false),
+    ];
+
+    let ix_data = (
+        pyth2wormhole::instruction::Instruction::Attest,
+        AttestData {
+            nonce,
+            consistency_level: ConsistencyLevel::Finalized,
+        },
+    );
+
+    let ix = Instruction::new_with_bytes(p2w_addr, ix_data.try_to_vec()?.as_slice(), acc_metas);
+
+    // Signers that use off-chain keypairs
+    let signer_keypairs = vec![&payer, &message_keypair, &emitter_keypair];
+
+    let tx_signed = Transaction::new_signed_with_payer::<Vec<&Keypair>>(
+        &[ix],
+        Some(&payer.pubkey()),
+        &signer_keypairs,
+        recent_blockhash,
+    );
+    Ok(tx_signed)
+}
+
 fn init_logging(verbosity: u32) {
     use LevelFilter::*;
     let filter = match verbosity {
diff --git a/solana/pyth2wormhole/program/src/attest.rs b/solana/pyth2wormhole/program/src/attest.rs
index e27296bc..bed644e8 100644
--- a/solana/pyth2wormhole/program/src/attest.rs
+++ b/solana/pyth2wormhole/program/src/attest.rs
@@ -54,7 +54,6 @@ pub struct Attest<'b> {
     pub payer: Mut<Signer<Info<'b>>>,
     pub system_program: Info<'b>,
     pub config: P2WConfigAccount<'b, { AccountState::Initialized }>,
-    pub wormhole_program: Info<'b>,
     pub pyth_product: Info<'b>,
     pub pyth_price: Info<'b>,
     pub clock: Sysvar<'b, Clock>,
diff --git a/solana/pyth2wormhole/program/src/set_config.rs b/solana/pyth2wormhole/program/src/set_config.rs
index 32642de7..cf903fa4 100644
--- a/solana/pyth2wormhole/program/src/set_config.rs
+++ b/solana/pyth2wormhole/program/src/set_config.rs
@@ -8,10 +8,11 @@ use crate::config::{P2WConfigAccount, Pyth2WormholeConfig};
 
 #[derive(FromAccounts, ToInstruction)]
 pub struct SetConfig<'b> {
-    /// New config to apply to the program
+    /// Current config used by the program
     pub config: P2WConfigAccount<'b, { AccountState::Initialized }>,
     /// Current owner authority of the program
     pub current_owner: Signer<Info<'b>>,
+    /// Payer account for updating the account data
     pub payer: Signer<Info<'b>>,
 }
 
diff --git a/solana/solitaire/client/src/lib.rs b/solana/solitaire/client/src/lib.rs
index 140e1c30..341fb039 100644
--- a/solana/solitaire/client/src/lib.rs
+++ b/solana/solitaire/client/src/lib.rs
@@ -21,18 +21,20 @@ pub use solana_sdk::{
 
 use borsh::BorshSerialize;
 
-use solitaire::{
-    AccountState,
-    Info,
-    Sysvar,
-};
 pub use solitaire::{
+    processors::seeded::Seeded,
     Data,
     Derive,
     Keyed,
     Owned,
     Signer,
 };
+use solitaire::{
+    AccountState,
+    Info,
+    Mut,
+    Sysvar,
+};
 
 type StdResult<T, E> = std::result::Result<T, E>;
 
@@ -104,12 +106,12 @@ impl<'a, 'b: 'a, T, const Seed: &'static str> Wrap for Derive<T, Seed> {
     fn wrap(a: &AccEntry) -> StdResult<Vec<AccountMeta>, ErrBox> {
         match a {
             AccEntry::Derived(program_id) => {
-                let (k, extra_seed) = Pubkey::find_program_address(&[Seed.as_bytes()], &program_id);
+                let k = Self::key(None, program_id);
 
                 Ok(vec![AccountMeta::new(k, false)])
             }
             AccEntry::DerivedRO(program_id) => {
-                let (k, extra_seed) = Pubkey::find_program_address(&[Seed.as_bytes()], &program_id);
+                let k = Self::key(None, program_id);
 
                 Ok(vec![AccountMeta::new_readonly(k, false)])
             }
@@ -187,6 +189,21 @@ impl<'b> Wrap for Info<'b> {
     }
 }
 
+impl<T: Wrap> Wrap for Mut<T> {
+    fn wrap(a: &AccEntry) -> StdResult<Vec<AccountMeta>, ErrBox> {
+        match a {
+            AccEntry::Unprivileged(_) | AccEntry::Signer(_) | AccEntry::Derived(_) => {
+                Ok(T::wrap(a)?)
+            }
+            _other => Err(format!(
+                "{} must be passed as Unprivileged, Signer or Derived (Must be mutable on-chain)",
+                std::any::type_name::<Self>()
+            )
+            .into()),
+        }
+    }
+}
+
 /// Trait used on client side to easily validate a program accounts + ix_data for a bare Solana call
 pub trait ToInstruction {
     fn to_ix(