Myriadcoin support (#666)

* Myriadcoin test

electrumx/lib/coins.py

@@ -2442,3 +2442,35 @@ class BitcoinPlus(Coin):
         '''Given a header return the hash.'''
         import x13_hash
         return x13_hash.getPoWHash(header)
+
+
+class Myriadcoin(AuxPowMixin, Coin):
+    NAME = "Myriadcoin"
+    SHORTNAME = "XMY"
+    NET = "mainnet"
+    XPUB_VERBYTES = bytes.fromhex("0488b21e")
+    XPRV_VERBYTES = bytes.fromhex("0488ade4")
+    P2PKH_VERBYTE = bytes.fromhex("32")
+    P2SH_VERBYTES = [bytes.fromhex("09")]
+    WIF_BYTE = bytes.fromhex("b2")
+    GENESIS_HASH = ('00000ffde4c020b5938441a0ea3d314b'
+                    'f619eff0b38f32f78f7583cffa1ea485')
+    DESERIALIZER = lib_tx.DeserializerAuxPowSegWit
+    TX_COUNT = 1976629
+    TX_COUNT_HEIGHT = 2580356
+    TX_PER_BLOCK = 20
+    REORG_LIMIT = 2000
+    RPC_PORT = 10889
+
+
+class MyriadcoinTestnet(Myriadcoin):
+    NAME = "Myriadcoin"
+    SHORTNAME = "XMT"
+    NET = "testnet"
+    XPUB_VERBYTES = bytes.fromhex("043587cf")
+    XPRV_VERBYTES = bytes.fromhex("04358394")
+    P2PKH_VERBYTE = bytes.fromhex("58")
+    P2SH_VERBYTES = [bytes.fromhex("bc")]
+    WIF_BYTE = bytes.fromhex("ef")
+    GENESIS_HASH = ('0000017ce2a79c8bddafbbe47c004aa9'
+                    '2b20678c354b34085f62b762084b9788')

tests/blocks/myriadcoin_mainnet_2587044.json

@@ -0,0 +1,14 @@
+{
+  "hash": "09a2344ca39c422a473ab2ac0a93c0de5eef7bbc63c59ea36bf8a126ae2fbc26",
+  "size": 326,
+  "height": 2587044,
+  "merkleroot": "0373487200798a478a9b5330fddcc092cb08f9b517c62eacbfbe733b8e8d3680",
+  "tx": [
+    "0373487200798a478a9b5330fddcc092cb08f9b517c62eacbfbe733b8e8d3680"
+  ],
+  "time": 1540383063,
+  "nonce": 1758391936,
+  "bits": "1b013fb1",
+  "previousblockhash": "6bebe78892419acf8f47fa34ac08417036c244a244d209dbb5113edfda7ae480",
+  "block": "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"
+}