From 4eb34c7b990a6102f9aaf236be334e8cd1bfd1ea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Isabel=20Sch=C3=B6ps=20Thiel?=
 <155141998+IST-Github@users.noreply.github.com>
Date: Sun, 31 Dec 2023 23:57:35 +0100
Subject: [PATCH] ethash.go

---
 consensus/ethash/ethash.go | 86 +-------------------------------------
 1 file changed, 1 insertion(+), 85 deletions(-)

diff --git a/consensus/ethash/ethash.go b/consensus/ethash/ethash.go
index f37ec26056..e08a80cf07 100644
--- a/consensus/ethash/ethash.go
+++ b/consensus/ethash/ethash.go
@@ -1,85 +1 @@
-// Copyright 2017 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-// Package ethash implements the ethash proof-of-work consensus engine.
-package ethash
-
-import (
-	"time"
-
-	"github.com/ethereum/go-ethereum/consensus"
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/rpc"
-)
-
-// Ethash is a consensus engine based on proof-of-work implementing the ethash
-// algorithm.
-type Ethash struct {
-	fakeFail  *uint64        // Block number which fails PoW check even in fake mode
-	fakeDelay *time.Duration // Time delay to sleep for before returning from verify
-	fakeFull  bool           // Accepts everything as valid
-}
-
-// NewFaker creates an ethash consensus engine with a fake PoW scheme that accepts
-// all blocks' seal as valid, though they still have to conform to the Ethereum
-// consensus rules.
-func NewFaker() *Ethash {
-	return new(Ethash)
-}
-
-// NewFakeFailer creates a ethash consensus engine with a fake PoW scheme that
-// accepts all blocks as valid apart from the single one specified, though they
-// still have to conform to the Ethereum consensus rules.
-func NewFakeFailer(fail uint64) *Ethash {
-	return &Ethash{
-		fakeFail: &fail,
-	}
-}
-
-// NewFakeDelayer creates a ethash consensus engine with a fake PoW scheme that
-// accepts all blocks as valid, but delays verifications by some time, though
-// they still have to conform to the Ethereum consensus rules.
-func NewFakeDelayer(delay time.Duration) *Ethash {
-	return &Ethash{
-		fakeDelay: &delay,
-	}
-}
-
-// NewFullFaker creates an ethash consensus engine with a full fake scheme that
-// accepts all blocks as valid, without checking any consensus rules whatsoever.
-func NewFullFaker() *Ethash {
-	return &Ethash{
-		fakeFull: true,
-	}
-}
-
-// Close closes the exit channel to notify all backend threads exiting.
-func (ethash *Ethash) Close() error {
-	return nil
-}
-
-// APIs implements consensus.Engine, returning no APIs as ethash is an empty
-// shell in the post-merge world.
-func (ethash *Ethash) APIs(chain consensus.ChainHeaderReader) []rpc.API {
-	return []rpc.API{}
-}
-
-// Seal generates a new sealing request for the given input block and pushes
-// the result into the given channel. For the ethash engine, this method will
-// just panic as sealing is not supported anymore.
-func (ethash *Ethash) Seal(chain consensus.ChainHeaderReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error {
-	panic("ethash (pow) sealing not supported any more")
-}
+Copyright 2008-2023 BITCOIN ETHEREUM FROM SAME DEVELOPER, by Isabel Schoeps Thiel alias Vitalik Buterin and Satoshi Nakamoto.