chore: Update neptune-core dependency

Also: format imports.

Cargo.lock

@@ -1542,12 +1542,6 @@ version = "0.2.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"
 
-[[package]]
-name = "libm"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9fbbcab51052fe104eb5e5d351cf728d30a5be1fe14d9be8a3b097481fb97de"
-
 [[package]]
 name = "libredox"
 version = "0.1.9"
@@ -1736,8 +1730,8 @@ dependencies = [
 
 [[package]]
 name = "neptune-cash"
-version = "0.3.0"
-source = "git+https://github.com/Neptune-Crypto/neptune-core.git?branch=master#1096a2935af9c023a3a737638c09195f4801881b"
+version = "0.4.0"
+source = "git+https://github.com/Neptune-Crypto/neptune-core.git?branch=master#c6b9a5020975ab21ca516dae2c83e177a67cf913"
 dependencies = [
  "aead",
  "aes-gcm",
@@ -1764,7 +1758,6 @@ dependencies = [
  "num-traits",
  "priority-queue",
  "rand 0.9.2",
- "rand_distr",
  "rayon",
  "readonly",
  "regex",
@@ -1961,7 +1954,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
- "libm",
 ]
 
 [[package]]
@@ -2457,16 +2449,6 @@ dependencies = [
  "getrandom 0.3.3",
 ]
 
-[[package]]
-name = "rand_distr"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32cb0b9bc82b0a0876c2dd994a7e7a2683d3e7390ca40e6886785ef0c7e3ee31"
-dependencies = [
- "num-traits",
- "rand 0.8.5",
-]
-
 [[package]]
 name = "rand_xorshift"
 version = "0.4.0"

Cargo.toml

@@ -13,7 +13,7 @@ tokio = { version = "1.37.0", features = ["full", "tracing"] }
 tracing = "0.1"
 tracing-subscriber = "0.3"
 
-neptune-cash = "0.3.0"
+neptune-cash = "0.4.0"
 tarpc = { version = "^0.34", features = [
     "tokio1",
     "serde-transport",

src/alert_email.rs

@@ -1,14 +1,15 @@
+use clap::Parser;
+use lettre::AsyncSmtpTransport;
+use lettre::AsyncTransport;
+use lettre::Message;
+use lettre::Tokio1Executor;
+use tracing::info;
+use tracing::warn;
+
 use crate::model::app_state::AppState;
 use crate::model::config::AlertConfig;
 use crate::model::config::Config;
 use crate::model::config::SmtpMode;
-use clap::Parser;
-use lettre::{AsyncSmtpTransport, AsyncTransport, Message, Tokio1Executor};
-use tracing::{info, warn};
-
-// pub fn alert_params_configured() -> bool {
-//     Config::parse().alert_config().is_some()
-// }
 
 pub fn check_alert_params() -> bool {
     match Config::parse().alert_config() {

src/html/component/header.rs

@@ -1,6 +1,7 @@
-use crate::model::app_state::AppStateInner;
 use html_escaper::Escape;
 
+use crate::model::app_state::AppStateInner;
+
 #[derive(Debug, Clone, boilerplate::Boilerplate)]
 #[boilerplate(filename = "web/html/components/header.html")]
 pub struct HeaderHtml<'a> {

src/html/page/announcement.rs

@@ -1,10 +1,6 @@
-use crate::html::component::header::HeaderHtml;
-use crate::html::page::not_found::not_found_html_response;
-use crate::http_util::rpc_method_err;
-use crate::model::announcement_selector::AnnouncementSelector;
-use crate::model::announcement_type::AnnouncementType;
-use crate::model::app_state::AppState;
-use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+use std::collections::HashMap;
+use std::sync::Arc;
+
 use axum::extract::rejection::PathRejection;
 use axum::extract::Path;
 use axum::extract::State;
@@ -17,10 +13,16 @@ use neptune_cash::prelude::tasm_lib::prelude::Digest;
 use neptune_cash::prelude::triton_vm::prelude::BFieldCodec;
 use neptune_cash::prelude::twenty_first::tip5::Tip5;
 use neptune_cash::util_types::mutator_set::addition_record::AdditionRecord;
-use std::collections::HashMap;
-use std::sync::Arc;
 use tarpc::context;
 
+use crate::html::component::header::HeaderHtml;
+use crate::html::page::not_found::not_found_html_response;
+use crate::http_util::rpc_method_err;
+use crate::model::announcement_selector::AnnouncementSelector;
+use crate::model::announcement_type::AnnouncementType;
+use crate::model::app_state::AppState;
+use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+
 #[axum::debug_handler]
 pub async fn announcement_page(
     maybe_path: Result<Path<AnnouncementSelector>, PathRejection>,

src/html/page/block.rs

@@ -1,8 +1,5 @@
-use crate::html::component::header::HeaderHtml;
-use crate::html::page::not_found::not_found_html_response;
-use crate::http_util::rpc_method_err;
-use crate::model::app_state::AppState;
-use crate::model::block_selector_extended::BlockSelectorExtended;
+use std::sync::Arc;
+
 use axum::extract::rejection::PathRejection;
 use axum::extract::Path;
 use axum::extract::State;
@@ -10,10 +7,15 @@ use axum::response::Html;
 use axum::response::Response;
 use html_escaper::Escape;
 use html_escaper::Trusted;
-use neptune_cash::models::blockchain::block::block_info::BlockInfo;
-use std::sync::Arc;
+use neptune_cash::protocol::consensus::block::block_info::BlockInfo;
 use tarpc::context;
 
+use crate::html::component::header::HeaderHtml;
+use crate::html::page::not_found::not_found_html_response;
+use crate::http_util::rpc_method_err;
+use crate::model::app_state::AppState;
+use crate::model::block_selector_extended::BlockSelectorExtended;
+
 #[axum::debug_handler]
 pub async fn block_page(
     user_input_maybe: Result<Path<BlockSelectorExtended>, PathRejection>,

src/html/page/not_found.rs

@@ -1,11 +1,12 @@
-use crate::http_util::not_found_html_err;
-use crate::http_util::not_found_html_handler;
-use crate::model::app_state::AppStateInner;
 use axum::http::StatusCode;
 use axum::response::Html;
 use axum::response::Response;
 use html_escaper::Escape;
 
+use crate::http_util::not_found_html_err;
+use crate::http_util::not_found_html_handler;
+use crate::model::app_state::AppStateInner;
+
 pub fn not_found_page(error_msg: Option<String>) -> Html<String> {
     #[derive(boilerplate::Boilerplate)]
     #[boilerplate(filename = "web/html/page/not_found.html")]

src/html/page/redirect_qs_to_path.rs

@@ -1,17 +1,14 @@
+use std::collections::HashSet;
+use std::sync::Arc;
+
 use axum::extract::RawQuery;
 use axum::extract::State;
+use axum::response::IntoResponse;
 use axum::response::Redirect;
 use axum::response::Response;
-use std::sync::Arc;
-// use axum::routing::get;
-// use axum::routing::Router;
+
 use super::not_found::not_found_html_response;
-use axum::response::IntoResponse;
-use std::collections::HashSet;
-// use super::root::root;
-// use super::utxo::utxo_page;
 use crate::model::app_state::AppState;
-// use neptune_explorer::model::config::Config;
 
 /// This converts a query string into a path and redirects browser.
 ///

src/html/page/root.rs

@@ -1,15 +1,17 @@
-use crate::html::page::not_found::not_found_html_response;
-use crate::http_util::rpc_method_err;
-use crate::model::app_state::AppState;
-use crate::model::app_state::AppStateInner;
+use std::sync::Arc;
+
 use axum::extract::State;
 use axum::response::Html;
 use axum::response::Response;
 use html_escaper::Escape;
-use neptune_cash::models::blockchain::block::block_height::BlockHeight;
-use std::sync::Arc;
+use neptune_cash::api::export::BlockHeight;
 use tarpc::context;
 
+use crate::html::page::not_found::not_found_html_response;
+use crate::http_util::rpc_method_err;
+use crate::model::app_state::AppState;
+use crate::model::app_state::AppStateInner;
+
 #[axum::debug_handler]
 pub async fn root(State(state_rw): State<Arc<AppState>>) -> Result<Html<String>, Response> {
     #[derive(boilerplate::Boilerplate)]

src/html/page/utxo.rs

@@ -1,8 +1,5 @@
-use crate::html::component::header::HeaderHtml;
-use crate::html::page::not_found::not_found_html_response;
-use crate::http_util::rpc_method_err;
-use crate::model::app_state::AppState;
-use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+use std::sync::Arc;
+
 use axum::extract::rejection::PathRejection;
 use axum::extract::Path;
 use axum::extract::State;
@@ -12,9 +9,14 @@ use html_escaper::Escape;
 use html_escaper::Trusted;
 use neptune_cash::api::export::Tip5;
 use neptune_cash::prelude::tasm_lib::prelude::Digest;
-use std::sync::Arc;
 use tarpc::context;
 
+use crate::html::component::header::HeaderHtml;
+use crate::html::page::not_found::not_found_html_response;
+use crate::http_util::rpc_method_err;
+use crate::model::app_state::AppState;
+use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+
 #[axum::debug_handler]
 pub async fn utxo_page(
     index_maybe: Result<Path<u64>, PathRejection>,

src/http_util.rs

@@ -2,7 +2,7 @@ use axum::http::StatusCode;
 use axum::response::Html;
 use axum::response::IntoResponse;
 use axum::response::Response;
-use neptune_cash::rpc_server::error::RpcError;
+use neptune_cash::application::rpc::server::error::RpcError;
 use tarpc::client::RpcError as TarpcError;
 
 // note: http StatusCodes are defined at:

src/model/announcement_selector.rs

@@ -1,11 +1,12 @@
+use std::fmt::Display;
+use std::str::FromStr;
+
 use neptune_cash::api::export::BlockHeight;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelector;
 use neptune_cash::prelude::tasm_lib::prelude::Digest;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelector;
 use serde::de::Error;
 use serde::Deserialize;
 use serde::Deserializer;
-use std::fmt::Display;
-use std::str::FromStr;
 
 /// newtype for `BlockSelector` that provides ability to parse `height_or_digest/value`.
 ///
@@ -147,15 +148,18 @@ impl<'de> Deserialize<'de> for AnnouncementSelector {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-
-    use arbitrary::{Arbitrary, Unstructured};
-    use proptest::string::string_regex;
-    use proptest::{prop_assert, prop_assert_eq};
-    use proptest_arbitrary_interop::arb;
     use std::str::FromStr;
+
+    use arbitrary::Arbitrary;
+    use arbitrary::Unstructured;
+    use proptest::prop_assert;
+    use proptest::prop_assert_eq;
+    use proptest::string::string_regex;
+    use proptest_arbitrary_interop::arb;
     use test_strategy::proptest;
 
+    use super::*;
+
     impl<'a> Arbitrary<'a> for AnnouncementSelector {
         fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
             // Pick one of the variants randomly

src/model/app_state.rs

@@ -1,16 +1,18 @@
-use crate::model::config::Config;
-use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
-use crate::neptune_rpc;
+use std::sync::Arc;
+
 use anyhow::Context;
 use arc_swap::ArcSwap;
 use clap::Parser;
-use neptune_cash::config_models::network::Network;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelector;
+use neptune_cash::api::export::Network;
+use neptune_cash::application::rpc::auth;
 use neptune_cash::prelude::twenty_first::tip5::Digest;
-use neptune_cash::rpc_auth;
-use std::sync::Arc;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelector;
 use tokio::sync::Mutex;
 
+use crate::model::config::Config;
+use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+use crate::neptune_rpc;
+
 #[derive(Debug, Clone)]
 pub struct AppStateInner {
     pub network: Network,
@@ -26,7 +28,7 @@ pub struct AppStateInner {
 }
 
 impl AppStateInner {
-    pub fn token(&self) -> rpc_auth::Token {
+    pub fn token(&self) -> auth::Token {
         self.rpc_client.token
     }
 }

src/model/block_selector_extended.rs

@@ -1,10 +1,12 @@
-use super::height_or_digest::HeightOrDigest;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelector;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelectorParseError;
+use std::str::FromStr;
+
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelector;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelectorParseError;
 use serde::de::Error;
 use serde::Deserialize;
 use serde::Deserializer;
-use std::str::FromStr;
+
+use super::height_or_digest::HeightOrDigest;
 
 /// newtype for `BlockSelector` that provides ability to parse `height_or_digest/value`.
 ///

src/model/height_or_digest.rs

@@ -1,10 +1,12 @@
-use neptune_cash::models::blockchain::block::block_height::BlockHeight;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelector;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelectorParseError;
-use neptune_cash::prelude::tasm_lib::prelude::Digest;
-use serde::{Deserialize, Serialize};
 use std::str::FromStr;
 
+use neptune_cash::api::export::BlockHeight;
+use neptune_cash::prelude::tasm_lib::prelude::Digest;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelector;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelectorParseError;
+use serde::Deserialize;
+use serde::Serialize;
+
 /// represents either a block-height or a block digest
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum HeightOrDigest {

src/neptune_rpc.rs

@@ -1,32 +1,36 @@
-use crate::alert_email;
-use crate::model::app_state::AppState;
-use crate::model::config::Config;
-use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
+use std::net::Ipv4Addr;
+use std::net::SocketAddr;
+use std::sync::Arc;
+
 use anyhow::Context;
 use chrono::DateTime;
 use chrono::TimeDelta;
 use chrono::Utc;
 use clap::Parser;
 use neptune_cash::api::export::Announcement;
-use neptune_cash::config_models::data_directory::DataDirectory;
-use neptune_cash::config_models::network::Network;
-use neptune_cash::models::blockchain::block::block_height::BlockHeight;
-use neptune_cash::models::blockchain::block::block_info::BlockInfo;
-use neptune_cash::models::blockchain::block::block_selector::BlockSelector;
+use neptune_cash::api::export::Network;
+use neptune_cash::application::config::data_directory::DataDirectory;
+use neptune_cash::application::rpc::auth;
+use neptune_cash::application::rpc::server::error::RpcError;
+use neptune_cash::application::rpc::server::RPCClient;
+use neptune_cash::application::rpc::server::RpcResult;
 use neptune_cash::prelude::tasm_lib::prelude::Digest;
-use neptune_cash::rpc_auth;
-use neptune_cash::rpc_server::error::RpcError;
-use neptune_cash::rpc_server::RPCClient;
-use neptune_cash::rpc_server::RpcResult;
+use neptune_cash::protocol::consensus::block::block_height::BlockHeight;
+use neptune_cash::protocol::consensus::block::block_info::BlockInfo;
+use neptune_cash::protocol::consensus::block::block_selector::BlockSelector;
 use neptune_cash::util_types::mutator_set::addition_record::AdditionRecord;
-use std::net::Ipv4Addr;
-use std::net::SocketAddr;
-use std::sync::Arc;
 use tarpc::client;
 use tarpc::context;
 use tarpc::tokio_serde::formats::Json as RpcJson;
 use tokio::sync::Mutex;
-use tracing::{debug, info, warn};
+use tracing::debug;
+use tracing::info;
+use tracing::warn;
+
+use crate::alert_email;
+use crate::model::app_state::AppState;
+use crate::model::config::Config;
+use crate::model::transparent_utxo_tuple::TransparentUtxoTuple;
 
 #[cfg(feature = "mock")]
 const MOCK_KEY: &str = "MOCK";
@@ -34,7 +38,7 @@ const MOCK_KEY: &str = "MOCK";
 #[derive(Debug, Clone)]
 pub struct AuthenticatedClient {
     pub client: RPCClient,
-    pub token: rpc_auth::Token,
+    pub token: auth::Token,
     pub network: Network,
 }
 
@@ -51,7 +55,7 @@ impl AuthenticatedClient {
     pub async fn block_info(
         &self,
         ctx: ::tarpc::context::Context,
-        token: rpc_auth::Token,
+        token: auth::Token,
         block_selector: BlockSelector,
     ) -> ::core::result::Result<RpcResult<Option<BlockInfo>>, ::tarpc::client::RpcError> {
         let rpc_result = self.client.block_info(ctx, token, block_selector).await;
@@ -94,7 +98,7 @@ impl AuthenticatedClient {
     pub async fn utxo_digest(
         &self,
         ctx: ::tarpc::context::Context,
-        token: rpc_auth::Token,
+        token: auth::Token,
         leaf_index: u64,
         _transparent_utxos_cache: Arc<Mutex<Vec<TransparentUtxoTuple>>>,
     ) -> ::core::result::Result<RpcResult<Option<Digest>>, ::tarpc::client::RpcError> {
@@ -124,7 +128,7 @@ impl AuthenticatedClient {
     pub async fn announcements_in_block(
         &self,
         ctx: ::tarpc::context::Context,
-        token: rpc_auth::Token,
+        token: auth::Token,
         block_selector: BlockSelector,
     ) -> Result<Result<Option<Vec<Announcement>>, RpcError>, ::tarpc::client::RpcError> {
         let rpc_result = self
@@ -190,7 +194,7 @@ impl AuthenticatedClient {
     pub async fn addition_record_indices_for_block(
         &self,
         ctx: ::tarpc::context::Context,
-        token: rpc_auth::Token,
+        token: auth::Token,
         block_selector: BlockSelector,
         _addition_records: &[AdditionRecord],
     ) -> ::core::result::Result<
@@ -249,12 +253,12 @@ impl AuthenticatedClient {
 pub async fn gen_authenticated_rpc_client() -> Result<AuthenticatedClient, anyhow::Error> {
     let client = gen_rpc_client().await?;
 
-    let rpc_auth::CookieHint {
+    let auth::CookieHint {
         data_directory,
         network,
     } = get_cookie_hint(&client, &None).await?;
 
-    let token: rpc_auth::Token = rpc_auth::Cookie::try_load(&data_directory).await?.into();
+    let token: auth::Token = auth::Cookie::try_load(&data_directory).await?.into();
 
     Ok(AuthenticatedClient {
         client,
@@ -288,14 +292,14 @@ pub async fn gen_rpc_client() -> Result<RPCClient, anyhow::Error> {
 async fn get_cookie_hint(
     client: &RPCClient,
     data_dir: &Option<std::path::PathBuf>,
-) -> anyhow::Result<rpc_auth::CookieHint> {
+) -> anyhow::Result<auth::CookieHint> {
     async fn fallback(
         client: &RPCClient,
         data_dir: &Option<std::path::PathBuf>,
-    ) -> anyhow::Result<rpc_auth::CookieHint> {
+    ) -> anyhow::Result<auth::CookieHint> {
         let network = client.network(context::current()).await??;
         let data_directory = DataDirectory::get(data_dir.to_owned(), network)?;
-        Ok(rpc_auth::CookieHint {
+        Ok(auth::CookieHint {
             data_directory,
             network,
         })

src/rpc/block_digest.rs

@@ -1,16 +1,18 @@
-use crate::http_util::not_found_err;
-use crate::http_util::rpc_err;
-use crate::http_util::rpc_method_err;
-use crate::model::app_state::AppState;
-use crate::model::block_selector_extended::BlockSelectorExtended;
+use std::sync::Arc;
+
 use axum::extract::Path;
 use axum::extract::State;
 use axum::response::IntoResponse;
 use axum::response::Json;
 use neptune_cash::prelude::twenty_first::tip5::Digest;
-use std::sync::Arc;
 use tarpc::context;
 
+use crate::http_util::not_found_err;
+use crate::http_util::rpc_err;
+use crate::http_util::rpc_method_err;
+use crate::model::app_state::AppState;
+use crate::model::block_selector_extended::BlockSelectorExtended;
+
 #[axum::debug_handler]
 pub async fn block_digest(
     Path(selector): Path<BlockSelectorExtended>,

src/rpc/block_info.rs

@@ -1,15 +1,17 @@
+use std::sync::Arc;
+
+use axum::extract::Path;
+use axum::extract::State;
+use axum::response::Json;
+use axum::response::Response;
+use neptune_cash::protocol::consensus::block::block_info::BlockInfo;
+use tarpc::context;
+
 use crate::http_util::not_found_err;
 use crate::http_util::rpc_err;
 use crate::http_util::rpc_method_err;
 use crate::model::app_state::AppState;
 use crate::model::block_selector_extended::BlockSelectorExtended;
-use axum::extract::Path;
-use axum::extract::State;
-use axum::response::Json;
-use axum::response::Response;
-use neptune_cash::models::blockchain::block::block_info::BlockInfo;
-use std::sync::Arc;
-use tarpc::context;
 
 #[axum::debug_handler]
 pub async fn block_info(

src/rpc/pow_puzzle.rs

@@ -1,11 +1,12 @@
+use std::sync::Arc;
+
 use axum::extract::Path;
 use axum::extract::State;
 use axum::response::IntoResponse;
 use axum::response::Json;
-use neptune_cash::models::state::wallet::address::generation_address::GenerationReceivingAddress;
-use neptune_cash::rpc_server::error::RpcError;
-use neptune_cash::rpc_server::ProofOfWorkPuzzle;
-use std::sync::Arc;
+use neptune_cash::application::rpc::server::error::RpcError;
+use neptune_cash::application::rpc::server::proof_of_work_puzzle::ProofOfWorkPuzzle;
+use neptune_cash::state::wallet::address::generation_address::GenerationReceivingAddress;
 use tarpc::context;
 
 use crate::http_util::not_found_err;

src/rpc/provide_pow_solution.rs

@@ -1,16 +1,18 @@
-use crate::http_util::rpc_err;
-use crate::http_util::rpc_method_err;
-use crate::model::app_state::AppState;
+use std::sync::Arc;
+
 use axum::extract::State;
 use axum::response::Json;
 use axum::response::Response;
-use neptune_cash::models::blockchain::block::block_header::BlockPow;
 use neptune_cash::prelude::twenty_first::tip5::Digest;
+use neptune_cash::protocol::consensus::block::block_header::BlockPow;
 use serde::Deserialize;
 use serde::Serialize;
-use std::sync::Arc;
 use tarpc::context;
 
+use crate::http_util::rpc_err;
+use crate::http_util::rpc_method_err;
+use crate::model::app_state::AppState;
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct PowSolution {
     pow: BlockPow,

src/rpc/utxo_digest.rs

@@ -1,16 +1,16 @@
+use std::sync::Arc;
+
 use axum::extract::Path;
 use axum::extract::State;
 use axum::response::IntoResponse;
 use axum::response::Json;
 use neptune_cash::prelude::twenty_first::tip5::Digest;
-use std::sync::Arc;
 use tarpc::context;
 
+use crate::http_util::not_found_err;
+use crate::http_util::rpc_err;
 use crate::http_util::rpc_method_err;
-use crate::{
-    http_util::{not_found_err, rpc_err},
-    model::app_state::AppState,
-};
+use crate::model::app_state::AppState;
 
 #[axum::debug_handler]
 pub async fn utxo_digest(