diff --git a/Cargo.lock b/Cargo.lock
index 5d73704bc0..ed47685bb8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4591,6 +4591,7 @@ dependencies = [
  "solana-clap-utils",
  "solana-client",
  "solana-config-program",
+ "solana-entry",
  "solana-frozen-abi 1.8.0",
  "solana-frozen-abi-macro 1.8.0",
  "solana-gossip",
@@ -4678,6 +4679,27 @@ dependencies = [
  "tar",
 ]
 
+[[package]]
+name = "solana-entry"
+version = "1.8.0"
+dependencies = [
+ "bincode",
+ "dlopen",
+ "dlopen_derive",
+ "log 0.4.14",
+ "matches",
+ "rand 0.7.3",
+ "rayon",
+ "serde",
+ "solana-logger 1.8.0",
+ "solana-measure",
+ "solana-merkle-tree",
+ "solana-metrics",
+ "solana-perf",
+ "solana-rayon-threadlimit",
+ "solana-sdk",
+]
+
 [[package]]
 name = "solana-failure-program"
 version = "1.8.0"
@@ -4779,6 +4801,7 @@ dependencies = [
  "serde_yaml",
  "solana-clap-utils",
  "solana-cli-config",
+ "solana-entry",
  "solana-ledger",
  "solana-logger 1.8.0",
  "solana-runtime",
@@ -4823,6 +4846,7 @@ dependencies = [
  "serial_test 0.5.1",
  "solana-clap-utils",
  "solana-client",
+ "solana-entry",
  "solana-frozen-abi 1.8.0",
  "solana-frozen-abi-macro 1.8.0",
  "solana-ledger",
@@ -4899,8 +4923,6 @@ dependencies = [
  "chrono",
  "chrono-humanize",
  "crossbeam-channel",
- "dlopen",
- "dlopen_derive",
  "ed25519-dalek",
  "fs_extra",
  "futures 0.3.15",
@@ -4923,6 +4945,7 @@ dependencies = [
  "sha2 0.9.5",
  "solana-account-decoder",
  "solana-bpf-loader-program",
+ "solana-entry",
  "solana-frozen-abi 1.8.0",
  "solana-frozen-abi-macro 1.8.0",
  "solana-logger 1.8.0",
@@ -4966,6 +4989,7 @@ dependencies = [
  "solana-clap-utils",
  "solana-cli-output",
  "solana-core",
+ "solana-entry",
  "solana-ledger",
  "solana-logger 1.8.0",
  "solana-measure",
@@ -4997,6 +5021,7 @@ dependencies = [
  "solana-config-program",
  "solana-core",
  "solana-download-utils",
+ "solana-entry",
  "solana-faucet",
  "solana-gossip",
  "solana-ledger",
@@ -5048,7 +5073,6 @@ name = "solana-measure"
 version = "1.8.0"
 dependencies = [
  "log 0.4.14",
- "solana-metrics",
  "solana-sdk",
 ]
 
@@ -5181,6 +5205,7 @@ dependencies = [
  "log 0.4.14",
  "matches",
  "rand 0.7.3",
+ "solana-entry",
  "solana-ledger",
  "solana-logger 1.8.0",
  "solana-measure",
@@ -5201,7 +5226,7 @@ dependencies = [
  "rand 0.7.3",
  "rayon",
  "solana-clap-utils",
- "solana-ledger",
+ "solana-entry",
  "solana-logger 1.8.0",
  "solana-measure",
  "solana-perf",
@@ -5355,6 +5380,7 @@ dependencies = [
  "serial_test 0.4.0",
  "solana-account-decoder",
  "solana-client",
+ "solana-entry",
  "solana-faucet",
  "solana-gossip",
  "solana-ledger",
@@ -5733,6 +5759,7 @@ dependencies = [
  "solana-client",
  "solana-core",
  "solana-download-utils",
+ "solana-entry",
  "solana-faucet",
  "solana-genesis-utils",
  "solana-gossip",
diff --git a/Cargo.toml b/Cargo.toml
index 0bb226c4ed..779f48a987 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,7 @@ members = [
     "core",
     "dos",
     "download-utils",
+    "entry",
     "faucet",
     "frozen-abi",
     "perf",
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 0412536c3c..6bc198786b 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -48,6 +48,7 @@ solana-banks-server = { path = "../banks-server", version = "=1.8.0" }
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
 solana-config-program = { path = "../programs/config", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-gossip = { path = "../gossip", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
 solana-logger = { path = "../logger", version = "=1.8.0" }
diff --git a/core/benches/banking_stage.rs b/core/benches/banking_stage.rs
index 0f19747869..6eb8126e79 100644
--- a/core/benches/banking_stage.rs
+++ b/core/benches/banking_stage.rs
@@ -10,10 +10,10 @@ use rayon::prelude::*;
 use solana_core::banking_stage::{BankingStage, BankingStageStats};
 use solana_core::cost_model::CostModel;
 use solana_core::cost_tracker::CostTracker;
+use solana_entry::entry::{next_hash, Entry};
 use solana_gossip::cluster_info::ClusterInfo;
 use solana_gossip::cluster_info::Node;
 use solana_ledger::blockstore_processor::process_entries;
-use solana_ledger::entry::{next_hash, Entry};
 use solana_ledger::genesis_utils::{create_genesis_config, GenesisConfigInfo};
 use solana_ledger::{blockstore::Blockstore, get_tmp_ledger_path};
 use solana_perf::packet::to_packets_chunked;
diff --git a/core/benches/blockstore.rs b/core/benches/blockstore.rs
index 48480f28a0..42e8c9ca5c 100644
--- a/core/benches/blockstore.rs
+++ b/core/benches/blockstore.rs
@@ -4,9 +4,9 @@ extern crate solana_ledger;
 extern crate test;
 
 use rand::Rng;
+use solana_entry::entry::{create_ticks, Entry};
 use solana_ledger::{
     blockstore::{entries_to_test_shreds, Blockstore},
-    entry::{create_ticks, Entry},
     get_tmp_ledger_path,
 };
 use solana_sdk::{clock::Slot, hash::Hash};
diff --git a/core/benches/retransmit_stage.rs b/core/benches/retransmit_stage.rs
index 1f96626310..fa8f755ebc 100644
--- a/core/benches/retransmit_stage.rs
+++ b/core/benches/retransmit_stage.rs
@@ -5,9 +5,9 @@ extern crate test;
 
 use log::*;
 use solana_core::retransmit_stage::retransmitter;
+use solana_entry::entry::Entry;
 use solana_gossip::cluster_info::{ClusterInfo, Node};
 use solana_gossip::contact_info::ContactInfo;
-use solana_ledger::entry::Entry;
 use solana_ledger::genesis_utils::{create_genesis_config, GenesisConfigInfo};
 use solana_ledger::leader_schedule_cache::LeaderScheduleCache;
 use solana_ledger::shred::Shredder;
diff --git a/core/benches/shredder.rs b/core/benches/shredder.rs
index 015ac85e29..f4d747bfdc 100644
--- a/core/benches/shredder.rs
+++ b/core/benches/shredder.rs
@@ -5,7 +5,7 @@ extern crate test;
 
 use rand::seq::SliceRandom;
 use raptorq::{Decoder, Encoder};
-use solana_ledger::entry::{create_ticks, Entry};
+use solana_entry::entry::{create_ticks, Entry};
 use solana_ledger::shred::{
     max_entries_per_n_shred, max_ticks_per_n_shreds, ProcessShredsStats, Shred, Shredder,
     MAX_DATA_SHREDS_PER_FEC_BLOCK, SHRED_PAYLOAD_SIZE, SIZE_OF_CODING_SHRED_HEADERS,
diff --git a/core/src/banking_stage.rs b/core/src/banking_stage.rs
index 9dc932833c..4e78be050b 100644
--- a/core/src/banking_stage.rs
+++ b/core/src/banking_stage.rs
@@ -6,8 +6,9 @@ use crossbeam_channel::{Receiver as CrossbeamReceiver, RecvTimeoutError};
 use itertools::Itertools;
 use lru::LruCache;
 use retain_mut::RetainMut;
+use solana_entry::entry::hash_transactions;
 use solana_gossip::cluster_info::ClusterInfo;
-use solana_ledger::{blockstore_processor::TransactionStatusSender, entry::hash_transactions};
+use solana_ledger::blockstore_processor::TransactionStatusSender;
 use solana_measure::measure::Measure;
 use solana_metrics::{inc_new_counter_debug, inc_new_counter_info};
 use solana_perf::{
@@ -23,10 +24,10 @@ use solana_runtime::{
         TransactionExecutionResult,
     },
     bank_utils,
-    hashed_transaction::HashedTransaction,
     transaction_batch::TransactionBatch,
     vote_sender_types::ReplayVoteSender,
 };
+use solana_sdk::hashed_transaction::HashedTransaction;
 use solana_sdk::{
     clock::{
         Slot, DEFAULT_TICKS_PER_SLOT, MAX_PROCESSING_AGE, MAX_TRANSACTION_FORWARDING_DELAY,
@@ -1572,10 +1573,10 @@ mod tests {
     use crate::cost_model::CostModel;
     use crossbeam_channel::unbounded;
     use itertools::Itertools;
+    use solana_entry::entry::{next_entry, Entry, EntrySlice};
     use solana_gossip::cluster_info::Node;
     use solana_ledger::{
         blockstore::{entries_to_test_shreds, Blockstore},
-        entry::{next_entry, Entry, EntrySlice},
         genesis_utils::{create_genesis_config, GenesisConfigInfo},
         get_tmp_ledger_path,
         leader_schedule_cache::LeaderScheduleCache,
diff --git a/core/src/broadcast_stage.rs b/core/src/broadcast_stage.rs
index 0000dabba7..2bb0ba5605 100644
--- a/core/src/broadcast_stage.rs
+++ b/core/src/broadcast_stage.rs
@@ -446,10 +446,10 @@ pub fn broadcast_shreds(
 pub mod test {
     use super::*;
     use crossbeam_channel::unbounded;
+    use solana_entry::entry::create_ticks;
     use solana_gossip::cluster_info::{ClusterInfo, Node};
     use solana_ledger::{
         blockstore::{make_slot_entries, Blockstore},
-        entry::create_ticks,
         genesis_utils::{create_genesis_config, GenesisConfigInfo},
         get_tmp_ledger_path,
         shred::{max_ticks_per_n_shreds, ProcessShredsStats, Shredder},
diff --git a/core/src/broadcast_stage/broadcast_duplicates_run.rs b/core/src/broadcast_stage/broadcast_duplicates_run.rs
index f144f0944c..8a5fcac541 100644
--- a/core/src/broadcast_stage/broadcast_duplicates_run.rs
+++ b/core/src/broadcast_stage/broadcast_duplicates_run.rs
@@ -1,5 +1,6 @@
 use super::*;
-use solana_ledger::{entry::Entry, shred::Shredder};
+use solana_entry::entry::Entry;
+use solana_ledger::shred::Shredder;
 use solana_runtime::blockhash_queue::BlockhashQueue;
 use solana_sdk::{
     hash::Hash,
diff --git a/core/src/broadcast_stage/broadcast_fake_shreds_run.rs b/core/src/broadcast_stage/broadcast_fake_shreds_run.rs
index 538faa5d22..e663b2bbe5 100644
--- a/core/src/broadcast_stage/broadcast_fake_shreds_run.rs
+++ b/core/src/broadcast_stage/broadcast_fake_shreds_run.rs
@@ -1,5 +1,5 @@
 use super::*;
-use solana_ledger::entry::Entry;
+use solana_entry::entry::Entry;
 use solana_ledger::shred::Shredder;
 use solana_sdk::hash::Hash;
 use solana_sdk::signature::Keypair;
diff --git a/core/src/broadcast_stage/broadcast_utils.rs b/core/src/broadcast_stage/broadcast_utils.rs
index 08a9d40738..d36759ddce 100644
--- a/core/src/broadcast_stage/broadcast_utils.rs
+++ b/core/src/broadcast_stage/broadcast_utils.rs
@@ -1,5 +1,6 @@
 use crate::result::Result;
-use solana_ledger::{entry::Entry, shred::Shred};
+use solana_entry::entry::Entry;
+use solana_ledger::shred::Shred;
 use solana_poh::poh_recorder::WorkingBankEntry;
 use solana_runtime::bank::Bank;
 use solana_sdk::clock::Slot;
diff --git a/core/src/broadcast_stage/standard_broadcast_run.rs b/core/src/broadcast_stage/standard_broadcast_run.rs
index 7f08cbe81c..62af0708d7 100644
--- a/core/src/broadcast_stage/standard_broadcast_run.rs
+++ b/core/src/broadcast_stage/standard_broadcast_run.rs
@@ -5,12 +5,9 @@ use super::{
     *,
 };
 use crate::{broadcast_stage::broadcast_utils::UnfinishedSlotInfo, cluster_nodes::ClusterNodes};
-use solana_ledger::{
-    entry::Entry,
-    shred::{
-        ProcessShredsStats, Shred, Shredder, MAX_DATA_SHREDS_PER_FEC_BLOCK,
-        SHRED_TICK_REFERENCE_MASK,
-    },
+use solana_entry::entry::Entry;
+use solana_ledger::shred::{
+    ProcessShredsStats, Shred, Shredder, MAX_DATA_SHREDS_PER_FEC_BLOCK, SHRED_TICK_REFERENCE_MASK,
 };
 use solana_sdk::{pubkey::Pubkey, signature::Keypair, timing::duration_as_us};
 use std::{collections::HashMap, sync::RwLock, time::Duration};
@@ -502,11 +499,11 @@ impl BroadcastRun for StandardBroadcastRun {
 #[cfg(test)]
 mod test {
     use super::*;
+    use solana_entry::entry::create_ticks;
     use solana_gossip::cluster_info::{ClusterInfo, Node};
     use solana_ledger::genesis_utils::create_genesis_config;
     use solana_ledger::{
-        blockstore::Blockstore, entry::create_ticks, get_tmp_ledger_path,
-        shred::max_ticks_per_n_shreds,
+        blockstore::Blockstore, get_tmp_ledger_path, shred::max_ticks_per_n_shreds,
     };
     use solana_runtime::bank::Bank;
     use solana_sdk::{
diff --git a/core/src/completed_data_sets_service.rs b/core/src/completed_data_sets_service.rs
index 9bc5186943..b1435b4403 100644
--- a/core/src/completed_data_sets_service.rs
+++ b/core/src/completed_data_sets_service.rs
@@ -1,6 +1,6 @@
 use crossbeam_channel::{Receiver, RecvTimeoutError, Sender};
+use solana_entry::entry::Entry;
 use solana_ledger::blockstore::{Blockstore, CompletedDataSetInfo};
-use solana_ledger::entry::Entry;
 use solana_rpc::{max_slots::MaxSlots, rpc_subscriptions::RpcSubscriptions};
 use solana_sdk::signature::Signature;
 use std::{
diff --git a/core/src/replay_stage.rs b/core/src/replay_stage.rs
index 8721c0e3da..a48b5200e4 100644
--- a/core/src/replay_stage.rs
+++ b/core/src/replay_stage.rs
@@ -23,12 +23,12 @@ use crate::{
     window_service::DuplicateSlotReceiver,
 };
 use solana_client::rpc_response::SlotUpdate;
+use solana_entry::entry::VerifyRecyclers;
 use solana_gossip::cluster_info::ClusterInfo;
 use solana_ledger::{
     block_error::BlockError,
     blockstore::Blockstore,
     blockstore_processor::{self, BlockstoreProcessorError, TransactionStatusSender},
-    entry::VerifyRecyclers,
     leader_schedule_cache::LeaderScheduleCache,
 };
 use solana_measure::measure::Measure;
@@ -2674,12 +2674,12 @@ mod tests {
         vote_simulator::{self, VoteSimulator},
     };
     use crossbeam_channel::unbounded;
+    use solana_entry::entry::{self, Entry};
     use solana_gossip::{cluster_info::Node, crds::Cursor};
     use solana_ledger::{
         blockstore::make_slot_entries,
         blockstore::{entries_to_test_shreds, BlockstoreError},
         create_new_tmp_ledger,
-        entry::{self, Entry},
         genesis_utils::{create_genesis_config, create_genesis_config_with_leader},
         get_tmp_ledger_path,
         shred::{
diff --git a/core/src/validator.rs b/core/src/validator.rs
index 7005e5dfa6..0a9145d48b 100644
--- a/core/src/validator.rs
+++ b/core/src/validator.rs
@@ -18,6 +18,7 @@ use crate::{
 };
 use crossbeam_channel::{bounded, unbounded};
 use rand::{thread_rng, Rng};
+use solana_entry::poh::compute_hash_time_ns;
 use solana_gossip::{
     cluster_info::{
         ClusterInfo, Node, DEFAULT_CONTACT_DEBUG_INTERVAL_MILLIS,
@@ -33,7 +34,6 @@ use solana_ledger::{
     blockstore_processor::{self, TransactionStatusSender},
     leader_schedule::FixedSchedule,
     leader_schedule_cache::LeaderScheduleCache,
-    poh::compute_hash_time_ns,
 };
 use solana_measure::measure::Measure;
 use solana_metrics::datapoint_info;
@@ -1626,8 +1626,8 @@ mod tests {
     fn test_backup_and_clear_blockstore() {
         use std::time::Instant;
         solana_logger::setup();
-        use solana_ledger::get_tmp_ledger_path;
-        use solana_ledger::{blockstore, entry};
+        use solana_entry::entry;
+        use solana_ledger::{blockstore, get_tmp_ledger_path};
         let blockstore_path = get_tmp_ledger_path!();
         {
             let blockstore = Blockstore::open(&blockstore_path).unwrap();
diff --git a/core/src/window_service.rs b/core/src/window_service.rs
index bd074a675c..7530147379 100644
--- a/core/src/window_service.rs
+++ b/core/src/window_service.rs
@@ -625,10 +625,10 @@ impl WindowService {
 #[cfg(test)]
 mod test {
     use super::*;
+    use solana_entry::entry::{create_ticks, Entry};
     use solana_gossip::contact_info::ContactInfo;
     use solana_ledger::{
         blockstore::{make_many_slot_entries, Blockstore},
-        entry::{create_ticks, Entry},
         genesis_utils::create_genesis_config_with_leader,
         get_tmp_ledger_path,
         shred::{DataShredHeader, Shredder},
diff --git a/entry/Cargo.toml b/entry/Cargo.toml
new file mode 100644
index 0000000000..21f3c8556b
--- /dev/null
+++ b/entry/Cargo.toml
@@ -0,0 +1,36 @@
+[package]
+name = "solana-entry"
+version = "1.8.0"
+description = "Solana Entry"
+authors = ["Solana Maintainers <maintainers@solana.foundation>"]
+repository = "https://github.com/solana-labs/solana"
+license = "Apache-2.0"
+homepage = "https://solana.com/"
+documentation = "https://docs.rs/solana-poh"
+edition = "2018"
+
+[dependencies]
+bincode = "1.3.3"
+dlopen = "0.1.8"
+dlopen_derive = "0.1.4"
+log = "0.4.11"
+rand = "0.7.0"
+rayon = "1.5.1"
+serde = "1.0.126"
+solana-measure = { path = "../measure", version = "=1.8.0" }
+solana-merkle-tree = { path = "../merkle-tree", version = "=1.8.0" }
+solana-metrics = { path = "../metrics", version = "=1.8.0" }
+solana-perf = { path = "../perf", version = "=1.8.0" }
+solana-rayon-threadlimit = { path = "../rayon-threadlimit", version = "=1.8.0" }
+solana-sdk = { path = "../sdk", version = "=1.8.0" }
+
+[dev-dependencies]
+matches = "0.1.6"
+solana-logger = { path = "../logger", version = "=1.8.0" }
+
+[lib]
+crate-type = ["lib"]
+name = "solana_entry"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
diff --git a/ledger/src/entry.rs b/entry/src/entry.rs
similarity index 99%
rename from ledger/src/entry.rs
rename to entry/src/entry.rs
index 10920db053..670aa50fb5 100644
--- a/ledger/src/entry.rs
+++ b/entry/src/entry.rs
@@ -17,8 +17,8 @@ use solana_perf::cuda_runtime::PinnedVec;
 use solana_perf::perf_libs;
 use solana_perf::recycler::Recycler;
 use solana_rayon_threadlimit::get_thread_count;
-use solana_runtime::hashed_transaction::HashedTransaction;
 use solana_sdk::hash::Hash;
+use solana_sdk::hashed_transaction::HashedTransaction;
 use solana_sdk::packet::PACKET_DATA_SIZE;
 use solana_sdk::timing;
 use solana_sdk::transaction::Transaction;
diff --git a/entry/src/lib.rs b/entry/src/lib.rs
new file mode 100644
index 0000000000..e081037f5b
--- /dev/null
+++ b/entry/src/lib.rs
@@ -0,0 +1,5 @@
+#![allow(clippy::integer_arithmetic)]
+pub mod entry;
+pub mod poh;
+
+extern crate log;
diff --git a/ledger/src/poh.rs b/entry/src/poh.rs
similarity index 100%
rename from ledger/src/poh.rs
rename to entry/src/poh.rs
diff --git a/genesis/Cargo.toml b/genesis/Cargo.toml
index a831c13459..7870c03fd5 100644
--- a/genesis/Cargo.toml
+++ b/genesis/Cargo.toml
@@ -18,6 +18,7 @@ serde_json = "1.0.64"
 serde_yaml = "0.8.17"
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-cli-config = { path = "../cli-config", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
 solana-logger = { path = "../logger", version = "=1.8.0" }
 solana-runtime = { path = "../runtime", version = "=1.8.0" }
diff --git a/genesis/src/main.rs b/genesis/src/main.rs
index 33ad182026..e149a00756 100644
--- a/genesis/src/main.rs
+++ b/genesis/src/main.rs
@@ -6,10 +6,9 @@ use solana_clap_utils::{
     input_parsers::{cluster_type_of, pubkey_of, pubkeys_of, unix_timestamp_from_rfc3339_datetime},
     input_validators::{is_pubkey_or_keypair, is_rfc3339_datetime, is_slot, is_valid_percentage},
 };
+use solana_entry::poh::compute_hashes_per_tick;
 use solana_genesis::{genesis_accounts::add_genesis_accounts, Base64Account};
-use solana_ledger::{
-    blockstore::create_new_ledger, blockstore_db::AccessType, poh::compute_hashes_per_tick,
-};
+use solana_ledger::{blockstore::create_new_ledger, blockstore_db::AccessType};
 use solana_runtime::hardened_unpack::MAX_GENESIS_ARCHIVE_UNPACKED_SIZE;
 use solana_sdk::{
     account::{Account, AccountSharedData, ReadableAccount, WritableAccount},
diff --git a/gossip/Cargo.toml b/gossip/Cargo.toml
index 6bf9e0064f..5fd58515f7 100644
--- a/gossip/Cargo.toml
+++ b/gossip/Cargo.toml
@@ -28,6 +28,7 @@ serde_bytes = "0.11"
 serde_derive = "1.0.103"
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-frozen-abi = { path = "../frozen-abi", version = "=1.8.0" }
 solana-frozen-abi-macro = { path = "../frozen-abi/macro", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
diff --git a/gossip/src/duplicate_shred.rs b/gossip/src/duplicate_shred.rs
index 59cd28836e..7af18a1a52 100644
--- a/gossip/src/duplicate_shred.rs
+++ b/gossip/src/duplicate_shred.rs
@@ -287,7 +287,8 @@ impl Sanitize for DuplicateShred {
 pub(crate) mod tests {
     use super::*;
     use rand::Rng;
-    use solana_ledger::{entry::Entry, shred::Shredder};
+    use solana_entry::entry::Entry;
+    use solana_ledger::shred::Shredder;
     use solana_sdk::{hash, signature::Keypair, signature::Signer, system_transaction};
     use std::sync::Arc;
 
diff --git a/ledger-tool/Cargo.toml b/ledger-tool/Cargo.toml
index c35b0c52d9..cea1af94fb 100644
--- a/ledger-tool/Cargo.toml
+++ b/ledger-tool/Cargo.toml
@@ -26,6 +26,7 @@ serde_yaml = "0.8.17"
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-cli-output = { path = "../cli-output", version = "=1.8.0" }
 solana-core = { path = "../core", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
 solana-logger = { path = "../logger", version = "=1.8.0" }
 solana-measure = { path = "../measure", version = "=1.8.0" }
diff --git a/ledger-tool/src/main.rs b/ledger-tool/src/main.rs
index 4d1baee597..06d51522da 100644
--- a/ledger-tool/src/main.rs
+++ b/ledger-tool/src/main.rs
@@ -16,7 +16,7 @@ use solana_clap_utils::{
 };
 use solana_core::cost_model::CostModel;
 use solana_core::cost_tracker::CostTracker;
-use solana_ledger::entry::Entry;
+use solana_entry::entry::Entry;
 use solana_ledger::{
     ancestor_iterator::AncestorIterator,
     bank_forks_utils,
diff --git a/ledger/Cargo.toml b/ledger/Cargo.toml
index ec57a32128..cb80ffe6f0 100644
--- a/ledger/Cargo.toml
+++ b/ledger/Cargo.toml
@@ -15,8 +15,6 @@ byteorder = "1.4.3"
 chrono = { version = "0.4.11", features = ["serde"] }
 chrono-humanize = "0.2.1"
 crossbeam-channel = "0.5"
-dlopen_derive = "0.1.4"
-dlopen = "0.1.8"
 ed25519-dalek = "1.0.1"
 fs_extra = "1.2.0"
 futures = "0.3.15"
@@ -34,6 +32,7 @@ serde = "1.0.126"
 serde_bytes = "0.11.5"
 sha2 = "0.9.5"
 solana-bpf-loader-program = { path = "../programs/bpf_loader", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-frozen-abi = { path = "../frozen-abi", version = "=1.8.0" }
 solana-frozen-abi-macro = { path = "../frozen-abi/macro", version = "=1.8.0" }
 solana-transaction-status = { path = "../transaction-status", version = "=1.8.0" }
diff --git a/ledger/src/bank_forks_utils.rs b/ledger/src/bank_forks_utils.rs
index 0761705716..3620c4ef47 100644
--- a/ledger/src/bank_forks_utils.rs
+++ b/ledger/src/bank_forks_utils.rs
@@ -4,10 +4,10 @@ use crate::{
         self, BlockstoreProcessorError, BlockstoreProcessorResult, CacheBlockMetaSender,
         ProcessOptions, TransactionStatusSender,
     },
-    entry::VerifyRecyclers,
     leader_schedule_cache::LeaderScheduleCache,
 };
 use log::*;
+use solana_entry::entry::VerifyRecyclers;
 use solana_runtime::{
     bank_forks::BankForks,
     snapshot_config::SnapshotConfig,
diff --git a/ledger/src/blockstore.rs b/ledger/src/blockstore.rs
index 65f0713fe6..c24d7aa859 100644
--- a/ledger/src/blockstore.rs
+++ b/ledger/src/blockstore.rs
@@ -8,7 +8,6 @@ use crate::{
         IteratorMode, LedgerColumn, Result, WriteBatch,
     },
     blockstore_meta::*,
-    entry::{create_ticks, Entry},
     erasure::ErasureConfig,
     leader_schedule_cache::LeaderScheduleCache,
     next_slots_iterator::NextSlotsIterator,
@@ -22,6 +21,7 @@ use rayon::{
     ThreadPool,
 };
 use rocksdb::DBRawIterator;
+use solana_entry::entry::{create_ticks, Entry};
 use solana_measure::measure::Measure;
 use solana_metrics::{datapoint_debug, datapoint_error};
 use solana_rayon_threadlimit::get_thread_count;
@@ -3981,7 +3981,6 @@ fn adjust_ulimit_nofile(enforce_ulimit_nofile: bool) -> Result<()> {
 pub mod tests {
     use super::*;
     use crate::{
-        entry::{next_entry, next_entry_mut},
         genesis_utils::{create_genesis_config, GenesisConfigInfo},
         leader_schedule::{FixedSchedule, LeaderSchedule},
         shred::{max_ticks_per_n_shreds, DataShredHeader},
@@ -3991,6 +3990,7 @@ pub mod tests {
     use itertools::Itertools;
     use rand::{seq::SliceRandom, thread_rng};
     use solana_account_decoder::parse_token::UiTokenAmount;
+    use solana_entry::entry::{next_entry, next_entry_mut};
     use solana_runtime::bank::{Bank, RewardType};
     use solana_sdk::{
         hash::{self, hash, Hash},
diff --git a/ledger/src/blockstore/blockstore_purge.rs b/ledger/src/blockstore/blockstore_purge.rs
index e847b24674..c11ba606cd 100644
--- a/ledger/src/blockstore/blockstore_purge.rs
+++ b/ledger/src/blockstore/blockstore_purge.rs
@@ -392,11 +392,9 @@ impl Blockstore {
 #[cfg(test)]
 pub mod tests {
     use super::*;
-    use crate::{
-        blockstore::tests::make_slot_entries_with_transactions, entry::next_entry_mut,
-        get_tmp_ledger_path,
-    };
+    use crate::{blockstore::tests::make_slot_entries_with_transactions, get_tmp_ledger_path};
     use bincode::serialize;
+    use solana_entry::entry::next_entry_mut;
     use solana_sdk::{
         hash::{hash, Hash},
         message::Message,
diff --git a/ledger/src/blockstore_processor.rs b/ledger/src/blockstore_processor.rs
index ba29f5b72a..472873b67d 100644
--- a/ledger/src/blockstore_processor.rs
+++ b/ledger/src/blockstore_processor.rs
@@ -1,10 +1,6 @@
 use crate::{
-    block_error::BlockError,
-    blockstore::Blockstore,
-    blockstore_db::BlockstoreError,
-    blockstore_meta::SlotMeta,
-    entry::{create_ticks, Entry, EntrySlice, EntryType, EntryVerificationStatus, VerifyRecyclers},
-    leader_schedule_cache::LeaderScheduleCache,
+    block_error::BlockError, blockstore::Blockstore, blockstore_db::BlockstoreError,
+    blockstore_meta::SlotMeta, leader_schedule_cache::LeaderScheduleCache,
 };
 use chrono_humanize::{Accuracy, HumanTime, Tense};
 use crossbeam_channel::Sender;
@@ -12,6 +8,9 @@ use itertools::Itertools;
 use log::*;
 use rand::{seq::SliceRandom, thread_rng};
 use rayon::{prelude::*, ThreadPool};
+use solana_entry::entry::{
+    create_ticks, Entry, EntrySlice, EntryType, EntryVerificationStatus, VerifyRecyclers,
+};
 use solana_measure::measure::Measure;
 use solana_metrics::{datapoint_error, inc_new_counter_debug};
 use solana_rayon_threadlimit::get_thread_count;
@@ -1305,15 +1304,13 @@ pub fn fill_blockstore_slot_with_ticks(
 #[cfg(test)]
 pub mod tests {
     use super::*;
-    use crate::{
-        entry::{create_ticks, next_entry, next_entry_mut},
-        genesis_utils::{
-            create_genesis_config, create_genesis_config_with_leader, GenesisConfigInfo,
-        },
+    use crate::genesis_utils::{
+        create_genesis_config, create_genesis_config_with_leader, GenesisConfigInfo,
     };
     use crossbeam_channel::unbounded;
     use matches::assert_matches;
     use rand::{thread_rng, Rng};
+    use solana_entry::entry::{create_ticks, next_entry, next_entry_mut};
     use solana_runtime::genesis_utils::{
         self, create_genesis_config_with_vote_accounts, ValidatorVoteKeypairs,
     };
diff --git a/ledger/src/lib.rs b/ledger/src/lib.rs
index de49994ede..a44e20a764 100644
--- a/ledger/src/lib.rs
+++ b/ledger/src/lib.rs
@@ -14,14 +14,12 @@ pub mod blockstore_db;
 pub mod blockstore_meta;
 pub mod blockstore_processor;
 pub mod builtins;
-pub mod entry;
 pub mod erasure;
 pub mod genesis_utils;
 pub mod leader_schedule;
 pub mod leader_schedule_cache;
 pub mod leader_schedule_utils;
 pub mod next_slots_iterator;
-pub mod poh;
 pub mod rooted_slot_iterator;
 pub mod shred;
 pub mod sigverify_shreds;
diff --git a/ledger/src/shred.rs b/ledger/src/shred.rs
index da636353fa..2e4310f992 100644
--- a/ledger/src/shred.rs
+++ b/ledger/src/shred.rs
@@ -49,11 +49,7 @@
 //! So, given a) - c), we must restrict data shred's payload length such that the entire coding
 //! payload can fit into one coding shred / packet.
 
-use crate::{
-    blockstore::MAX_DATA_SHREDS_PER_SLOT,
-    entry::{create_ticks, Entry},
-    erasure::Session,
-};
+use crate::{blockstore::MAX_DATA_SHREDS_PER_SLOT, erasure::Session};
 use bincode::config::Options;
 use core::cell::RefCell;
 use rayon::{
@@ -62,6 +58,7 @@ use rayon::{
     ThreadPool,
 };
 use serde::{Deserialize, Serialize};
+use solana_entry::entry::{create_ticks, Entry};
 use solana_measure::measure::Measure;
 use solana_perf::packet::{limited_deserialize, Packet};
 use solana_rayon_threadlimit::get_thread_count;
diff --git a/ledger/tests/blockstore.rs b/ledger/tests/blockstore.rs
index 4840b57a16..aac9e072ed 100644
--- a/ledger/tests/blockstore.rs
+++ b/ledger/tests/blockstore.rs
@@ -1,4 +1,4 @@
-use solana_ledger::entry;
+use solana_entry::entry;
 use solana_ledger::{
     blockstore::{self, Blockstore},
     get_tmp_ledger_path,
diff --git a/ledger/tests/shred.rs b/ledger/tests/shred.rs
index 71eacd1050..9a47e64391 100644
--- a/ledger/tests/shred.rs
+++ b/ledger/tests/shred.rs
@@ -1,5 +1,5 @@
 #![allow(clippy::integer_arithmetic)]
-use solana_ledger::entry::Entry;
+use solana_entry::entry::Entry;
 use solana_ledger::shred::{
     max_entries_per_n_shred, verify_test_data_shred, Shred, Shredder,
     MAX_DATA_SHREDS_PER_FEC_BLOCK, SIZE_OF_DATA_SHRED_PAYLOAD,
diff --git a/local-cluster/Cargo.toml b/local-cluster/Cargo.toml
index 7636e565d6..85e2ccab33 100644
--- a/local-cluster/Cargo.toml
+++ b/local-cluster/Cargo.toml
@@ -21,6 +21,7 @@ solana-config-program = { path = "../programs/config", version = "=1.8.0" }
 solana-core = { path = "../core", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
 solana-download-utils = { path = "../download-utils", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-faucet = { path = "../faucet", version = "=1.8.0" }
 solana-gossip = { path = "../gossip", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
diff --git a/local-cluster/src/cluster_tests.rs b/local-cluster/src/cluster_tests.rs
index 9c7269e278..07f985423a 100644
--- a/local-cluster/src/cluster_tests.rs
+++ b/local-cluster/src/cluster_tests.rs
@@ -7,6 +7,7 @@ use rand::{thread_rng, Rng};
 use rayon::prelude::*;
 use solana_client::thin_client::create_client;
 use solana_core::consensus::VOTE_THRESHOLD_DEPTH;
+use solana_entry::entry::{Entry, EntrySlice};
 use solana_gossip::{
     cluster_info::{self, VALIDATOR_PORT_RANGE},
     contact_info::ContactInfo,
@@ -14,10 +15,7 @@ use solana_gossip::{
     gossip_error::GossipError,
     gossip_service::discover_cluster,
 };
-use solana_ledger::{
-    blockstore::Blockstore,
-    entry::{Entry, EntrySlice},
-};
+use solana_ledger::blockstore::Blockstore;
 use solana_sdk::{
     client::SyncClient,
     clock::{self, Slot, NUM_CONSECUTIVE_LEADER_SLOTS},
diff --git a/measure/Cargo.toml b/measure/Cargo.toml
index 8436bc8bcb..6b32110fa8 100644
--- a/measure/Cargo.toml
+++ b/measure/Cargo.toml
@@ -13,7 +13,6 @@ edition = "2018"
 [dependencies]
 log = "0.4.14"
 solana-sdk = { path = "../sdk", version = "=1.8.0" }
-solana-metrics = { path = "../metrics", version = "=1.8.0" }
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
diff --git a/poh-bench/Cargo.toml b/poh-bench/Cargo.toml
index 9f8387c0c4..a233e1de49 100644
--- a/poh-bench/Cargo.toml
+++ b/poh-bench/Cargo.toml
@@ -14,7 +14,7 @@ log = "0.4.14"
 rand = "0.7.0"
 rayon = "1.5.1"
 solana-logger = { path = "../logger", version = "=1.8.0" }
-solana-ledger = { path = "../ledger", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-sdk = { path = "../sdk", version = "=1.8.0" }
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-measure = { path = "../measure", version = "=1.8.0" }
diff --git a/poh-bench/src/main.rs b/poh-bench/src/main.rs
index d742d816e2..ec84960af9 100644
--- a/poh-bench/src/main.rs
+++ b/poh-bench/src/main.rs
@@ -1,9 +1,9 @@
 #![allow(clippy::integer_arithmetic)]
 use clap::{crate_description, crate_name, value_t, App, Arg};
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
-use solana_ledger::entry::{self, create_ticks, init_poh, EntrySlice, VerifyRecyclers};
+use solana_entry::entry::{self, create_ticks, init_poh, EntrySlice, VerifyRecyclers};
 #[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
-use solana_ledger::entry::{create_ticks, init_poh, EntrySlice, VerifyRecyclers};
+use solana_entry::entry::{create_ticks, init_poh, EntrySlice, VerifyRecyclers};
 use solana_measure::measure::Measure;
 use solana_perf::perf_libs;
 use solana_sdk::hash::hash;
diff --git a/poh/Cargo.toml b/poh/Cargo.toml
index 205537d81d..d26c2ee917 100644
--- a/poh/Cargo.toml
+++ b/poh/Cargo.toml
@@ -13,6 +13,7 @@ edition = "2018"
 core_affinity = "0.5.10"
 crossbeam-channel = "0.5"
 log = "0.4.14"
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
 solana-measure = { path = "../measure", version = "=1.8.0" }
 solana-metrics = { path = "../metrics", version = "=1.8.0" }
diff --git a/poh/benches/poh.rs b/poh/benches/poh.rs
index 9996544022..5ea2d3a9ba 100644
--- a/poh/benches/poh.rs
+++ b/poh/benches/poh.rs
@@ -4,7 +4,7 @@
 extern crate test;
 
 use {
-    solana_ledger::poh::Poh,
+    solana_entry::poh::Poh,
     solana_poh::poh_service::DEFAULT_HASHES_PER_BATCH,
     solana_sdk::hash::Hash,
     std::sync::{
diff --git a/poh/benches/poh_verify.rs b/poh/benches/poh_verify.rs
index b0ae0b7aae..47f31860c3 100644
--- a/poh/benches/poh_verify.rs
+++ b/poh/benches/poh_verify.rs
@@ -2,7 +2,7 @@
 extern crate test;
 
 use {
-    solana_ledger::entry::{next_entry_mut, Entry, EntrySlice},
+    solana_entry::entry::{next_entry_mut, Entry, EntrySlice},
     solana_sdk::{
         hash::{hash, Hash},
         signature::{Keypair, Signer},
diff --git a/poh/src/poh_recorder.rs b/poh/src/poh_recorder.rs
index 2a17c68d41..d7e92f4ebd 100644
--- a/poh/src/poh_recorder.rs
+++ b/poh/src/poh_recorder.rs
@@ -17,9 +17,8 @@ use {
         unbounded, Receiver as CrossbeamReceiver, RecvTimeoutError, Sender as CrossbeamSender,
     },
     log::*,
-    solana_ledger::{
-        blockstore::Blockstore, entry::Entry, leader_schedule_cache::LeaderScheduleCache, poh::Poh,
-    },
+    solana_entry::{entry::Entry, poh::Poh},
+    solana_ledger::{blockstore::Blockstore, leader_schedule_cache::LeaderScheduleCache},
     solana_runtime::bank::Bank,
     solana_sdk::{
         clock::NUM_CONSECUTIVE_LEADER_SLOTS, hash::Hash, poh_config::PohConfig, pubkey::Pubkey,
diff --git a/poh/src/poh_service.rs b/poh/src/poh_service.rs
index 4833f16fb1..86705db34c 100644
--- a/poh/src/poh_service.rs
+++ b/poh/src/poh_service.rs
@@ -4,7 +4,7 @@ use {
     crate::poh_recorder::{PohRecorder, Record},
     crossbeam_channel::Receiver,
     log::*,
-    solana_ledger::poh::Poh,
+    solana_entry::poh::Poh,
     solana_measure::measure::Measure,
     solana_sdk::poh_config::PohConfig,
     std::{
diff --git a/programs/bpf/Cargo.lock b/programs/bpf/Cargo.lock
index 6b7869d7d0..f15f4d7f79 100644
--- a/programs/bpf/Cargo.lock
+++ b/programs/bpf/Cargo.lock
@@ -3177,7 +3177,6 @@ name = "solana-measure"
 version = "1.8.0"
 dependencies = [
  "log",
- "solana-metrics",
  "solana-sdk",
 ]
 
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index 26a72cb61e..01506a198b 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -29,6 +29,7 @@ serde_derive = "1.0.103"
 serde_json = "1.0.56"
 solana-account-decoder = { path = "../account-decoder", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-faucet = { path = "../faucet", version = "=1.8.0" }
 solana-gossip = { path = "../gossip", version = "=1.8.0" }
 solana-ledger = { path = "../ledger", version = "=1.8.0" }
diff --git a/rpc/src/rpc.rs b/rpc/src/rpc.rs
index 103891b7d5..03b0219eae 100644
--- a/rpc/src/rpc.rs
+++ b/rpc/src/rpc.rs
@@ -3852,12 +3852,12 @@ pub fn create_test_transactions_and_populate_blockstore(
     let success_tx =
         solana_sdk::system_transaction::transfer(mint_keypair, &keypair1.pubkey(), 2, blockhash);
     let success_signature = success_tx.signatures[0];
-    let entry_1 = solana_ledger::entry::next_entry(&blockhash, 1, vec![success_tx]);
+    let entry_1 = solana_entry::entry::next_entry(&blockhash, 1, vec![success_tx]);
     // Failed transaction, InstructionError
     let ix_error_tx =
         solana_sdk::system_transaction::transfer(keypair2, &keypair3.pubkey(), 10, blockhash);
     let ix_error_signature = ix_error_tx.signatures[0];
-    let entry_2 = solana_ledger::entry::next_entry(&entry_1.hash, 1, vec![ix_error_tx]);
+    let entry_2 = solana_entry::entry::next_entry(&entry_1.hash, 1, vec![ix_error_tx]);
     // Failed transaction
     let fail_tx = solana_sdk::system_transaction::transfer(
         mint_keypair,
@@ -3865,7 +3865,7 @@ pub fn create_test_transactions_and_populate_blockstore(
         2,
         Hash::default(),
     );
-    let entry_3 = solana_ledger::entry::next_entry(&entry_2.hash, 1, vec![fail_tx]);
+    let entry_3 = solana_entry::entry::next_entry(&entry_2.hash, 1, vec![fail_tx]);
     let mut entries = vec![entry_1, entry_2, entry_3];
 
     let shreds = solana_ledger::blockstore::entries_to_test_shreds(
diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index 66d96cc548..9479a36eaf 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -44,7 +44,6 @@ use crate::{
     blockhash_queue::BlockhashQueue,
     builtins::{self, ActivationType},
     epoch_stakes::{EpochStakes, NodeVoteAccounts},
-    hashed_transaction::{HashedTransaction, HashedTransactionSlice},
     inline_spl_token_v2_0,
     instruction_recorder::InstructionRecorder,
     log_collector::LogCollector,
@@ -85,6 +84,7 @@ use solana_sdk::{
     genesis_config::{ClusterType, GenesisConfig},
     hard_forks::HardForks,
     hash::{extend_and_hash, hashv, Hash},
+    hashed_transaction::{HashedTransaction, HashedTransactionSlice},
     incinerator,
     inflation::Inflation,
     instruction::CompiledInstruction,
diff --git a/runtime/src/bank_utils.rs b/runtime/src/bank_utils.rs
index 87ec5caef3..286ecda44e 100644
--- a/runtime/src/bank_utils.rs
+++ b/runtime/src/bank_utils.rs
@@ -1,10 +1,9 @@
 use crate::{
     bank::{Bank, TransactionResults},
     genesis_utils::{self, GenesisConfigInfo, ValidatorVoteKeypairs},
-    hashed_transaction::HashedTransaction,
     vote_sender_types::ReplayVoteSender,
 };
-use solana_sdk::{pubkey::Pubkey, signature::Signer};
+use solana_sdk::{hashed_transaction::HashedTransaction, pubkey::Pubkey, signature::Signer};
 use solana_vote_program::vote_transaction;
 
 pub fn setup_bank_and_vote_pubkeys(num_vote_accounts: usize, stake: u64) -> (Bank, Vec<Pubkey>) {
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index a073a03b3a..036c23155e 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -20,7 +20,6 @@ pub mod contains;
 pub mod epoch_stakes;
 pub mod genesis_utils;
 pub mod hardened_unpack;
-pub mod hashed_transaction;
 pub mod inline_spl_token_v2_0;
 pub mod instruction_recorder;
 pub mod loader_utils;
diff --git a/runtime/src/transaction_batch.rs b/runtime/src/transaction_batch.rs
index ba4b963174..10e1d40643 100644
--- a/runtime/src/transaction_batch.rs
+++ b/runtime/src/transaction_batch.rs
@@ -1,5 +1,5 @@
 use crate::bank::Bank;
-use crate::hashed_transaction::HashedTransaction;
+use solana_sdk::hashed_transaction::HashedTransaction;
 use solana_sdk::transaction::{Result, Transaction};
 use std::borrow::Cow;
 
diff --git a/runtime/src/hashed_transaction.rs b/sdk/src/hashed_transaction.rs
similarity index 94%
rename from runtime/src/hashed_transaction.rs
rename to sdk/src/hashed_transaction.rs
index 3f3b35f918..f478ab9fd5 100644
--- a/runtime/src/hashed_transaction.rs
+++ b/sdk/src/hashed_transaction.rs
@@ -1,4 +1,6 @@
-use solana_sdk::{hash::Hash, transaction::Transaction};
+#![cfg(feature = "full")]
+
+use crate::{hash::Hash, transaction::Transaction};
 use std::borrow::Cow;
 
 /// Transaction and the hash of its message
diff --git a/sdk/src/lib.rs b/sdk/src/lib.rs
index 8b8cccaf85..292461176f 100644
--- a/sdk/src/lib.rs
+++ b/sdk/src/lib.rs
@@ -26,6 +26,7 @@ pub mod feature_set;
 pub mod genesis_config;
 pub mod hard_forks;
 pub mod hash;
+pub mod hashed_transaction;
 pub mod inflation;
 pub mod keyed_account;
 pub mod log;
diff --git a/validator/Cargo.toml b/validator/Cargo.toml
index 1f79146b97..71d5eb2ab1 100644
--- a/validator/Cargo.toml
+++ b/validator/Cargo.toml
@@ -33,6 +33,7 @@ solana-cli-config = { path = "../cli-config", version = "=1.8.0" }
 solana-client = { path = "../client", version = "=1.8.0" }
 solana-core = { path = "../core", version = "=1.8.0" }
 solana-download-utils = { path = "../download-utils", version = "=1.8.0" }
+solana-entry = { path = "../entry", version = "=1.8.0" }
 solana-faucet = { path = "../faucet", version = "=1.8.0" }
 solana-genesis-utils = { path = "../genesis-utils", version = "=1.8.0" }
 solana-gossip = { path = "../gossip", version = "=1.8.0" }
diff --git a/validator/src/main.rs b/validator/src/main.rs
index 05d64802c8..e81498dae2 100644
--- a/validator/src/main.rs
+++ b/validator/src/main.rs
@@ -2620,7 +2620,7 @@ pub fn main() {
         solana_perf::perf_libs::init_cuda();
         enable_recycler_warming();
     }
-    solana_ledger::entry::init_poh();
+    solana_entry::entry::init_poh();
     solana_runtime::snapshot_utils::remove_tmp_snapshot_archives(&snapshot_output_dir);
 
     let identity_keypair = Arc::new(identity_keypair);