diff --git a/rust/chains/tw_greenfield/src/address.rs b/rust/chains/tw_greenfield/src/address.rs
index d0d4d794448..94b9565b17a 100644
--- a/rust/chains/tw_greenfield/src/address.rs
+++ b/rust/chains/tw_greenfield/src/address.rs
@@ -6,7 +6,7 @@ use serde::Serialize;
 use std::fmt;
 use std::str::FromStr;
 use tw_coin_entry::coin_entry::CoinAddress;
-use tw_coin_entry::error::AddressError;
+use tw_coin_entry::error::prelude::*;
 use tw_cosmos_sdk::address::CosmosAddress;
 use tw_evm::address::Address as EthereumAddress;
 use tw_keypair::ecdsa::secp256k1;
diff --git a/rust/chains/tw_greenfield/src/compiler.rs b/rust/chains/tw_greenfield/src/compiler.rs
index a37ac39a7f2..e9db4725199 100644
--- a/rust/chains/tw_greenfield/src/compiler.rs
+++ b/rust/chains/tw_greenfield/src/compiler.rs
@@ -11,7 +11,7 @@ use std::borrow::Cow;
 use tw_coin_entry::coin_context::CoinContext;
 use tw_coin_entry::coin_entry::{PublicKeyBytes, SignatureBytes};
 use tw_coin_entry::common::compile_input::SingleSignaturePubkey;
-use tw_coin_entry::error::{SigningError, SigningErrorType, SigningResult};
+use tw_coin_entry::error::prelude::*;
 use tw_coin_entry::signing_output_error;
 use tw_cosmos_sdk::modules::broadcast_msg::{BroadcastMode, BroadcastMsg};
 use tw_cosmos_sdk::modules::serializer::json_serializer::JsonSerializer;
@@ -72,8 +72,12 @@ impl GreenfieldCompiler {
         } = SingleSignaturePubkey::from_sign_pubkey_list(signatures, public_keys)?;
 
         let public_key_params = None;
-        let public_key = GreenfieldPublicKey::from_bytes(coin, &public_key, public_key_params)?;
-        let signature = GreenfieldSignature::try_from(raw_signature.as_slice())?;
+        let public_key = GreenfieldPublicKey::from_bytes(coin, &public_key, public_key_params)
+            .into_tw()
+            .context("Invalid provided public key")?;
+        let signature = GreenfieldSignature::try_from(raw_signature.as_slice())
+            .into_tw()
+            .context("Invalid provided signature")?;
         let signature_bytes = signature.to_vec();
 
         // Set the public key. It will be used to construct a signer info.
@@ -91,7 +95,8 @@ impl GreenfieldCompiler {
             signature_bytes.clone(),
         );
         let signature_json = serde_json::to_string(&[signature_json])
-            .map_err(|_| SigningError(SigningErrorType::Error_internal))?;
+            .tw_err(|_| SigningErrorType::Error_internal)
+            .context("Error serializing signatures as JSON")?;
 
         Ok(Proto::SigningOutput {
             signature: Cow::from(signature_bytes),
diff --git a/rust/chains/tw_greenfield/src/entry.rs b/rust/chains/tw_greenfield/src/entry.rs
index 52ea07203f4..01ee90e50ae 100644
--- a/rust/chains/tw_greenfield/src/entry.rs
+++ b/rust/chains/tw_greenfield/src/entry.rs
@@ -9,7 +9,7 @@ use std::str::FromStr;
 use tw_coin_entry::coin_context::CoinContext;
 use tw_coin_entry::coin_entry::{CoinEntry, PublicKeyBytes, SignatureBytes};
 use tw_coin_entry::derivation::Derivation;
-use tw_coin_entry::error::{AddressError, AddressResult};
+use tw_coin_entry::error::prelude::*;
 use tw_coin_entry::modules::json_signer::NoJsonSigner;
 use tw_coin_entry::modules::message_signer::NoMessageSigner;
 use tw_coin_entry::modules::plan_builder::NoPlanBuilder;
diff --git a/rust/chains/tw_greenfield/src/modules/eip712_signer.rs b/rust/chains/tw_greenfield/src/modules/eip712_signer.rs
index 7b9fcb34f05..c5ead1f19de 100644
--- a/rust/chains/tw_greenfield/src/modules/eip712_signer.rs
+++ b/rust/chains/tw_greenfield/src/modules/eip712_signer.rs
@@ -7,10 +7,10 @@ use crate::eip712_types::{
 };
 use crate::transaction::GreenfieldUnsignedTransaction;
 use std::collections::BTreeMap;
-use tw_coin_entry::error::{SigningError, SigningErrorType, SigningResult};
+use tw_coin_entry::error::prelude::*;
 use tw_evm::message::eip712::eip712_message::Eip712Message;
 use tw_evm::message::eip712::message_types::MessageTypesBuilder;
-use tw_evm::message::EthMessage;
+use tw_evm::message::{to_signing, EthMessage};
 use tw_hash::H256;
 use tw_number::U256;
 
@@ -65,15 +65,17 @@ impl Eip712Signer {
         let msg_to_sign = Eip712Message {
             types: types_builder.build(),
             domain: serde_json::to_value(domain)
-                .map_err(|_| SigningError(SigningErrorType::Error_internal))?,
+                .tw_err(|_| SigningErrorType::Error_internal)
+                .context("Error serializing EIP712Domain as JSON")?,
             primary_type: Eip712Transaction::TYPE_NAME.to_string(),
             message: serde_json::to_value(tx_to_sign)
-                .map_err(|_| SigningError(SigningErrorType::Error_internal))?,
+                .tw_err(|_| SigningErrorType::Error_internal)
+                .context("Error serializing EIP712 message payload as JSON")?,
         };
 
-        let tx_hash = msg_to_sign.hash()?;
-        let eip712_tx = serde_json::to_string(&msg_to_sign)
-            .map_err(|_| SigningError(SigningErrorType::Error_internal))?;
+        let tx_hash = msg_to_sign.hash().map_err(to_signing)?;
+        let eip712_tx =
+            serde_json::to_string(&msg_to_sign).tw_err(|_| SigningErrorType::Error_internal)?;
 
         Ok(Eip712TxPreimage { eip712_tx, tx_hash })
     }
diff --git a/rust/chains/tw_greenfield/src/modules/tx_builder.rs b/rust/chains/tw_greenfield/src/modules/tx_builder.rs
index 2e0951c8cce..6a12bb2aa6e 100644
--- a/rust/chains/tw_greenfield/src/modules/tx_builder.rs
+++ b/rust/chains/tw_greenfield/src/modules/tx_builder.rs
@@ -11,7 +11,7 @@ use crate::transaction::{
 };
 use std::str::FromStr;
 use tw_coin_entry::coin_context::CoinContext;
-use tw_coin_entry::error::{SigningError, SigningErrorType, SigningResult};
+use tw_coin_entry::error::prelude::*;
 use tw_cosmos_sdk::public_key::CosmosPublicKey;
 use tw_cosmos_sdk::transaction::{Coin, SignerInfo};
 use tw_misc::traits::OptionalEmpty;
@@ -36,11 +36,13 @@ impl TxBuilder {
         let fee = input
             .fee
             .as_ref()
-            .ok_or(SigningError(SigningErrorType::Error_wrong_fee))?;
+            .or_tw_err(SigningErrorType::Error_wrong_fee)
+            .context("No 'fee' specified")?;
         let fee = Self::fee_from_proto(fee, &signer)?;
 
         let eth_chain_id = U256::from_str(&input.eth_chain_id)
-            .map_err(|_| SigningError(SigningErrorType::Error_invalid_params))?;
+            .tw_err(|_| SigningErrorType::Error_invalid_params)
+            .context("Invalid ETH chain ID")?;
 
         Ok(GreenfieldUnsignedTransaction {
             signer,
@@ -89,7 +91,9 @@ impl TxBuilder {
     }
 
     fn coin_from_proto(input: &Proto::Amount<'_>) -> SigningResult<Coin> {
-        let amount = U256::from_str(&input.amount)?;
+        let amount = U256::from_str(&input.amount)
+            .into_tw()
+            .context("Invalid amount: expected uint256 decimal-string")?;
         Ok(Coin {
             amount,
             denom: input.denom.to_string(),
@@ -98,7 +102,8 @@ impl TxBuilder {
 
     fn tx_body_from_proto(input: &Proto::SigningInput<'_>) -> SigningResult<GreenfieldTxBody> {
         if input.messages.is_empty() {
-            return Err(SigningError(SigningErrorType::Error_invalid_params));
+            return SigningError::err(SigningErrorType::Error_invalid_params)
+                .context("No transaction messages provided");
         }
 
         let messages = input
@@ -122,7 +127,8 @@ impl TxBuilder {
             MessageEnum::bridge_transfer_out(ref transfer_out) => {
                 Self::bridge_transfer_out_from_proto(transfer_out)
             },
-            MessageEnum::None => Err(SigningError(SigningErrorType::Error_invalid_params)),
+            MessageEnum::None => SigningError::err(SigningErrorType::Error_invalid_params)
+                .context("No message type provided"),
         }
     }
 
@@ -139,8 +145,12 @@ impl TxBuilder {
             .collect::<SigningResult<_>>()?;
         let msg = SendMessage {
             custom_type_prefix: send.type_prefix.to_string().empty_or_some(),
-            from_address: GreenfieldAddress::from_str(&send.from_address)?,
-            to_address: GreenfieldAddress::from_str(&send.to_address)?,
+            from_address: GreenfieldAddress::from_str(&send.from_address)
+                .into_tw()
+                .context("Invalid sender address")?,
+            to_address: GreenfieldAddress::from_str(&send.to_address)
+                .into_tw()
+                .context("Invalid recipient address")?,
             amount: amounts,
         };
         Ok(Box::new(GreenfieldSendMessage(msg)))
@@ -154,13 +164,18 @@ impl TxBuilder {
         let amount = transfer_out
             .amount
             .as_ref()
-            .ok_or(SigningError(SigningErrorType::Error_wrong_fee))?;
+            .or_tw_err(SigningErrorType::Error_invalid_params)
+            .context("No transfer amount specified")?;
 
         let msg = GreenfieldTransferOut {
             custom_type_prefix: transfer_out.type_prefix.to_string().empty_or_some(),
             amount: Self::coin_from_proto(amount)?,
-            from: GreenfieldAddress::from_str(&transfer_out.from_address)?,
-            to: GreenfieldAddress::from_str(&transfer_out.to_address)?,
+            from: GreenfieldAddress::from_str(&transfer_out.from_address)
+                .into_tw()
+                .context("Invalid sender address")?,
+            to: GreenfieldAddress::from_str(&transfer_out.to_address)
+                .into_tw()
+                .context("Invalid recipient address")?,
         };
         Ok(Box::new(msg))
     }
diff --git a/rust/chains/tw_greenfield/src/signer.rs b/rust/chains/tw_greenfield/src/signer.rs
index 6b0d2c88e28..afde1ed2747 100644
--- a/rust/chains/tw_greenfield/src/signer.rs
+++ b/rust/chains/tw_greenfield/src/signer.rs
@@ -7,7 +7,7 @@ use crate::modules::eip712_signer::{Eip712Signer, Eip712TxPreimage};
 use crate::modules::tx_builder::TxBuilder;
 use std::borrow::Cow;
 use tw_coin_entry::coin_context::CoinContext;
-use tw_coin_entry::error::SigningResult;
+use tw_coin_entry::error::prelude::*;
 use tw_coin_entry::signing_output_error;
 use tw_keypair::ecdsa::secp256k1;
 use tw_keypair::traits::{KeyPairTrait, SigningKeyTrait};
diff --git a/rust/chains/tw_greenfield/src/transaction/message/send_order.rs b/rust/chains/tw_greenfield/src/transaction/message/send_order.rs
index 8d9ebc62ccf..7733629ba9d 100644
--- a/rust/chains/tw_greenfield/src/transaction/message/send_order.rs
+++ b/rust/chains/tw_greenfield/src/transaction/message/send_order.rs
@@ -5,7 +5,7 @@
 use crate::address::GreenfieldAddress;
 use crate::transaction::message::type_msg_amount::TypeMsgAmount;
 use crate::transaction::message::GreenfieldMessage;
-use tw_coin_entry::error::SigningResult;
+use tw_coin_entry::error::prelude::*;
 use tw_cosmos_sdk::proto::cosmos as CosmosProto;
 use tw_cosmos_sdk::transaction::message::cosmos_bank_message::SendMessage;
 use tw_cosmos_sdk::transaction::message::{
diff --git a/rust/chains/tw_greenfield/src/transaction/message/transfer_out.rs b/rust/chains/tw_greenfield/src/transaction/message/transfer_out.rs
index f626db7d5a7..00a01116db5 100644
--- a/rust/chains/tw_greenfield/src/transaction/message/transfer_out.rs
+++ b/rust/chains/tw_greenfield/src/transaction/message/transfer_out.rs
@@ -6,7 +6,7 @@ use crate::address::GreenfieldAddress;
 use crate::transaction::message::type_msg_amount::TypeMsgAmount;
 use crate::transaction::message::GreenfieldMessage;
 use serde::Serialize;
-use tw_coin_entry::error::SigningResult;
+use tw_coin_entry::error::prelude::*;
 use tw_cosmos_sdk::modules::serializer::protobuf_serializer::build_coin;
 use tw_cosmos_sdk::proto::greenfield as GreenfieldProto;
 use tw_cosmos_sdk::transaction::message::{