From c87fbddf2f75f3f389ff5a4f9ff2f03313c44e98 Mon Sep 17 00:00:00 2001
From: Elichai Turkel <elichai.turkel@gmail.com>
Date: Sat, 6 Nov 2021 21:46:25 +0200
Subject: [PATCH] Replace our current PoW algorithm with oPoW

---
 domain/consensus/utils/pow/pow.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/domain/consensus/utils/pow/pow.go b/domain/consensus/utils/pow/pow.go
index ca59c1aff..d77633616 100644
--- a/domain/consensus/utils/pow/pow.go
+++ b/domain/consensus/utils/pow/pow.go
@@ -52,7 +52,10 @@ func CalculateProofOfWorkValue(header externalapi.MutableBlockHeader) *big.Int {
 	if err != nil {
 		panic(errors.Wrap(err, "this should never happen. Hash digest should never return an error"))
 	}
-	return toBig(writer.Finalize())
+	powHash := writer.Finalize()
+	matrix := generateMatrix(powHash)
+	heavyHash := matrix.HeavyHash(powHash)
+	return toBig(heavyHash)
 }
 
 // ToBig converts a externalapi.DomainHash into a big.Int treated as a little endian string.