From 83732af4fe2ffc6a5c57b1cfef2217a199d2c32d Mon Sep 17 00:00:00 2001
From: joesixpack <23145642+joesixpack@users.noreply.github.com>
Date: Mon, 23 Jul 2018 18:39:39 -0700
Subject: [PATCH] Support for Minexcoin (#529)

---
 docs/changelog.rst                         |  2 +-
 electrumx/lib/coins.py                     | 49 ++++++++++++++++++++++
 tests/blocks/minexcoin_mainnet_170999.json | 26 ++++++++++++
 3 files changed, 76 insertions(+), 1 deletion(-)
 create mode 100644 tests/blocks/minexcoin_mainnet_170999.json

diff --git a/docs/changelog.rst b/docs/changelog.rst
index 2c89dab..22bff13 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -17,7 +17,7 @@ Version 1.6.1  (in progress)
 * cleaner mempool and notification handling
 * aiohttp min version requirement raised to 2.0
 * onion peers are ignored if no tor proxy is available
-* add Motion coin (ocruzv)
+* add Motion coin (ocruzv), MinexCoin (joesixpack)
 
 Version 1.6  (19 July 2018)
 ===========================
diff --git a/electrumx/lib/coins.py b/electrumx/lib/coins.py
index 6461c8f..9b7cc48 100644
--- a/electrumx/lib/coins.py
+++ b/electrumx/lib/coins.py
@@ -1923,3 +1923,52 @@ class Monoeci(Coin):
                 '''Given a header return the hash.'''
                 import x11_hash
                 return x11_hash.getPoWHash(header)
+
+
+class MinexcoinMixin(object):
+    STATIC_BLOCK_HEADERS = True
+    BASIC_HEADER_SIZE = 209
+    DESERIALIZER = lib_tx.DeserializerEquihash
+
+    @classmethod
+    def electrum_header(cls, header, height):
+        version, = struct.unpack('<I', header[:4])
+        timestamp, bits = struct.unpack('<II', header[100:108])
+
+        return {
+            'block_height': height,
+            'version': version,
+            'prev_block_hash': hash_to_hex_str(header[4:36]),
+            'merkle_root': hash_to_hex_str(header[36:68]),
+            'timestamp': timestamp,
+            'bits': bits,
+            'nonce': hash_to_hex_str(header[108:140]),
+            'solution': hash_to_hex_str(header[140:209]),
+        }
+
+    @classmethod
+    def block_header(cls, block, height):
+        '''Return the block header bytes'''
+        deserializer = cls.DESERIALIZER(block)
+        return deserializer.read_header(height, 140)
+
+
+class Minexcoin(MinexcoinMixin, Coin):
+    NAME = "Minexcoin"
+    SHORTNAME = "MNX"
+    NET = "mainnet"
+    P2PKH_VERBYTE = bytes.fromhex("4b")
+    P2SH_VERBYTES = [bytes.fromhex("05")]
+    WIF_BYTE = bytes.fromhex("80")
+    GENESIS_HASH = ('490a36d9451a55ed197e34aca7414b35'
+                    'd775baa4a8e896f1c577f65ce2d214cb')
+    DESERIALIZER = lib_tx.DeserializerEquihash
+    TX_COUNT = 327963
+    TX_COUNT_HEIGHT = 74495
+    TX_PER_BLOCK = 5
+    RPC_PORT = 8022
+    CHUNK_SIZE = 960
+    PEERS = [
+        'elex01-ams.turinex.eu s t',
+        'eu.minexpool.nl s t'
+    ]
diff --git a/tests/blocks/minexcoin_mainnet_170999.json b/tests/blocks/minexcoin_mainnet_170999.json
new file mode 100644
index 0000000..a6b26e5
--- /dev/null
+++ b/tests/blocks/minexcoin_mainnet_170999.json
@@ -0,0 +1,26 @@
+{
+  "hash": "000000000306a0d2c7195523a39fb0aaa20a5a91261f8db96644bf44d80f7755",
+  "strippedsize": 3638,
+  "size": 3638,
+  "weight": 14552,
+  "height": 170999,
+  "version": 536870912,
+  "versionHex": "20000000",
+  "merkleroot": "6b4ad9c9837c3818b3046bd310733a0d72da10faaeb4ae99f74e8f891942d88c",
+  "tx": [
+    "baee13240981c78eade7f89b9b9489259320b2ed4b68fdfe28a0b8c2ec8eb1b3",
+    "9e501897aa65d1acb74b9d4dc40add1b64cd112b32cc4cd7389b5106c344760a",
+    "661a9c7dc6e0f24e1ffe0f49e98ba11255c1d753e2f65caf946a4d2db7532db0",
+    "0af160913312b26beb1fbee6ac5d18645a1901ea7a9fbd61bd089ac5448dcebf",
+    "98b63c1d39d7bbebcb741647e057caa430a094ae80a276837dca1b0d62191bd3"
+  ],
+  "time": 1532157627,
+  "mediantime": 1532156460,
+  "nonce": "9ba08b8c040000000000000000000000000000000000000000000000e4ffff4f",
+  "bits": "1c3e0628",
+  "difficulty": 4.127368377546984,
+  "chainwork": "00000000000000000000000000000000000000000000000000073e907f659708",
+  "previousblockhash": "00000000236ce9f5a8b5ee46c5068a0924ed5a1f193a1c0acaa4e5e64b7e554b",
+  "nextblockhash": "0000000034a769f6ef3f091d725188429276c7a88f3883b9badadee7d321712b",
+  "block": "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+}