From b4491d6d60d240cb9462b625d890474c3df0a503 Mon Sep 17 00:00:00 2001
From: NicolasCantu <nicolas.cantu@pm.me>
Date: Fri, 6 Jun 2025 22:44:12 +0200
Subject: [PATCH] Add hash mod

---
 src/hash.rs | 20 ++++++++++++++++++++
 src/lib.rs  |  1 +
 2 files changed, 21 insertions(+)
 create mode 100644 src/hash.rs

diff --git a/src/hash.rs b/src/hash.rs
new file mode 100644
index 0000000..ab87874
--- /dev/null
+++ b/src/hash.rs
@@ -0,0 +1,20 @@
+use sp_client::bitcoin::{
+        consensus::{serialize, Encodable}, hashes::{sha256t_hash_newtype, Hash, HashEngine}, OutPoint
+    };
+
+sha256t_hash_newtype! {
+    pub struct AnkPcdTag = hash_str("4nk/Pcd");
+
+    #[hash_newtype(forward)]
+    pub struct AnkPcdHash(_);
+}
+
+impl AnkPcdHash {
+    pub fn from_pcd_value(value: &[u8], label: &[u8], outpoint: &OutPoint) -> Self {
+        let mut eng = AnkPcdHash::engine();
+        eng.input(value);
+        eng.input(label);
+        serialize(outpoint).consensus_encode(&mut eng).expect("hash engine don't return errors");
+        AnkPcdHash::from_engine(eng)
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index d878123..3b9e08e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,6 +16,7 @@ pub use wasm_bindgen;
 
 pub mod crypto;
 pub mod device;
+pub mod hash;
 pub mod error;
 pub mod network;
 pub mod pcd;