From c4a6929a3dd729abe9e55cba6417c21efa3ffc48 Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Sat, 14 Jan 2017 13:40:46 -0800
Subject: [PATCH] Clarify assumptions made about when BlockCheck is called

---
 src/validationinterface.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/validationinterface.h b/src/validationinterface.h
index a29859999..16dbdf005 100644
--- a/src/validationinterface.h
+++ b/src/validationinterface.h
@@ -60,7 +60,12 @@ struct CMainSignals {
     boost::signals2::signal<void (const uint256 &)> Inventory;
     /** Tells listeners to broadcast their data. */
     boost::signals2::signal<void (int64_t nBestBlockTime, CConnman* connman)> Broadcast;
-    /** Notifies listeners of a block validation result */
+    /**
+     * Notifies listeners of a block validation result.
+     * If the provided CValidationState IsValid, the provided block
+     * is guaranteed to be the current best block at the time the
+     * callback was generated (not necessarily now)
+     */
     boost::signals2::signal<void (const CBlock&, const CValidationState&)> BlockChecked;
     /** Notifies listeners that a key for mining is required (coinbase) */
     boost::signals2::signal<void (boost::shared_ptr<CReserveScript>&)> ScriptForMining;