Adding Xuez Coin (#472)

.travis.yml

@@ -23,6 +23,7 @@ install:
   - pip install pylru
   - pip install blake256
   - pip install x11_hash
+  - pip install xevan_hash
 # command to run tests
 script: pytest --cov=server --cov=lib --cov=wallet
 # Dont report coverage from nightly

docs/HOWTO.rst

@@ -1,4 +1,4 @@
-.. _HOWTO:
+. _HOWTO:
 
 =====
 HOWTO

lib/coins.py

@@ -1647,3 +1647,66 @@ class Axe(Dash):
         '''
         import x11_hash
         return x11_hash.getPoWHash(header)
+
+class Xuez(Coin):
+    NAME = "Xuez"
+    SHORTNAME = "XUEZ"
+    NET = "mainnet"
+    XPUB_VERBYTES = bytes.fromhex("022d2533")
+    XPRV_VERBYTES = bytes.fromhex("0221312b")
+    P2PKH_VERBYTE = bytes.fromhex("48")
+    P2SH_VERBYTES = [bytes.fromhex("12")]
+    WIF_BYTE = bytes.fromhex("d4")
+    GENESIS_HASH = ('000000e1febc39965b055e8e0117179a'
+                    '4d18e24e7aaa0c69864c4054b4f29445')
+
+    
+    TX_COUNT = 30000
+    TX_COUNT_HEIGHT = 15000
+    TX_PER_BLOCK = 1
+    RPC_PORT = 41799
+    REORG_LIMIT = 1000
+    BASIC_HEADER_SIZE = 112
+    PEERS = []
+
+    @classmethod
+    def header_hash(cls, header):
+        '''
+        Given a header return the hash for Xuez.
+        Need to download `xevan_hash` module
+        Source code: https://github.com/xuez/xuez
+        '''
+        version, = struct.unpack('<I', header[:4])
+
+        import xevan_hash
+        
+        if  version == 1 :
+            return xevan_hash.getPoWHash(header[:80])
+        else:
+            return xevan_hash.getPoWHash(header)
+
+    @classmethod
+    def electrum_header(cls, header, height):
+        version, = struct.unpack('<I', header[:4])
+        timestamp, bits, nonce = struct.unpack('<III', header[68:80])
+        if  version == 1 :
+            return {
+                'block_height': height,
+                'version': version,
+                'prev_block_hash': hash_to_str(header[4:36]),
+                'merkle_root': hash_to_str(header[36:68]),
+                'timestamp': timestamp,
+                'bits': bits,
+                'nonce': nonce,
+            }        
+        else:
+            return {
+                'block_height': height,
+                'version': version,
+                'prev_block_hash': hash_to_str(header[4:36]),
+                'merkle_root': hash_to_str(header[36:68]),
+                'timestamp': timestamp,
+                'bits': bits,
+                'nonce': nonce,
+                'nAccumulatorCheckpoint': hash_to_str(header[80:112]),
+            }        

setup.py

@@ -11,6 +11,7 @@ setuptools.setup(
     # "x11_hash" package (1.4) is required to sync DASH network.
     # "tribus_hash" package is required to sync Denarius network.
     # "blake256" package is required to sync Decred network.
+    # "xevan_hash" package is required to sync Xuez network.
     install_requires=['aiorpcX >= 0.5.5', 'plyvel', 'pylru', 'aiohttp >= 1'],
     packages=setuptools.find_packages(exclude=['tests']),
     description='ElectrumX Server',

tests/blocks/xuez_mainnet_1.json

@@ -0,0 +1,14 @@
+{
+  "hash": "0000010180d0d872e32af5bbefe8c3567c6ad89c90244ccfc5155555ad8dd22c",
+  "size": 212,
+  "height": 1,
+  "merkleroot": "7c48ceee00495329ab8ee4028a577dfb5f0da80ee6197b4e4f787306e0650351",
+  "tx": [
+    "7c48ceee00495329ab8ee4028a577dfb5f0da80ee6197b4e4f787306e0650351"
+  ],
+  "time": 1523055115,
+  "nonce": 98,
+  "bits": "1e0fffff",
+  "previousblockhash": "000000e1febc39965b055e8e0117179a4d18e24e7aaa0c69864c4054b4f29445",
+  "block": "040000004594f2b454404c86690caa7a4ee2184d9a1717018e5e055b9639bcfee1000000510365e00673784f4e7b19e60ea80d5ffb7d578a02e48eab29534900eece487c0bfac75affff0f1e6200000000000000000000000000000000000000000000000000000000000000000000000101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff045102d500ffffffff01402fd7863f1600002321024fcb2f96969e70381f4dc01e38a8df3a04297478a36b50d55cce8ba20242bacfac00000000"
+}

tests/blocks/xuez_mainnet_15000.json

@@ -0,0 +1,14 @@
+{
+  "hash": "000000038b6eda3d00e28c4ccbcebb0ca9cdf1bf2c7cbd9366735590d5c8c9bb",
+  "size": 247,
+  "height": 15000,
+  "merkleroot": "bca5b726d932fd7e9c31dcbe12bc17c6da81c1cb625024ae7cf0bca47668d49b",
+  "tx": [
+    "bca5b726d932fd7e9c31dcbe12bc17c6da81c1cb625024ae7cf0bca47668d49b"
+  ],
+  "time": 1524030719,
+  "nonce": 136866,
+  "bits": "1d049c81",
+  "previousblockhash": "00000001c2117eb8d8a0ab30145ee7a360440eddfc4a621caca03a40a89d7040",
+  "block": "0400000040709da8403aa0ac1c624afcdd0e4460a3e75e1430aba0d8b87e11c2010000009bd46876a4bcf07cae245062cbc181dac617bc12bedc319c7efd32d926b7a5bcffdcd65a819c041da216020000000000000000000000000000000000000000000000000000000000000000000101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff0502983a0139ffffffff0200e1f5050000000023210202e8f286f69013d9fb4f824e39e6b62bc129228e64522cbeb240e9bc007129e8ac80d1f008000000001976a914d83e3413ae0d667813f2c78ec67990460573675a88ac00000000"
+}