From 716fa23e869ed2836cd5c237016e91b8575200ad Mon Sep 17 00:00:00 2001
From: teor <teor@riseup.net>
Date: Tue, 22 Jun 2021 11:41:35 +1000
Subject: [PATCH] Document shared to per-spend anchor conversion (#2363)

---
 zebra-chain/src/transaction.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/zebra-chain/src/transaction.rs b/zebra-chain/src/transaction.rs
index 40acfd56..f4b1d87e 100644
--- a/zebra-chain/src/transaction.rs
+++ b/zebra-chain/src/transaction.rs
@@ -323,6 +323,9 @@ impl Transaction {
     /// returning `Spend<PerSpendAnchor>` regardless of the underlying
     /// transaction version.
     ///
+    /// Shared anchors in V5 transactions are copied into each sapling spend.
+    /// This allows the same code to validate spends from V4 and V5 transactions.
+    ///
     /// # Correctness
     ///
     /// Do not use this function for serialization.