Add Bellcoin support (#850)

* Add Bellcoin

.travis.yml

@@ -36,6 +36,7 @@ install:
   - pip install x16r_hash
   - pip install pycryptodomex
   - pip install git+https://github.com/Electra-project/nist5_hash
+  - pip install bell-yespower
 # command to run tests
 script:
   - pytest --cov=electrumx

electrumx/lib/coins.py

@@ -3033,3 +3033,32 @@ class ECCoin(Coin):
         # you have to install scryp python module (pip install scrypt)
         import scrypt
         return scrypt.hash(header, header, 1024, 1, 1, 32)
+
+
+class Bellcoin(Coin):
+    NAME = "Bellcoin"
+    SHORTNAME = "BELL"
+    NET = "mainnet"
+    XPUB_VERBYTES = bytes.fromhex("0488b21e")
+    XPRV_VERBYTES = bytes.fromhex("0488ade4")
+    P2PKH_VERBYTE = bytes.fromhex("19")
+    P2SH_VERBYTES = [bytes.fromhex("55")]
+    WIF_BYTE = bytes.fromhex("80")
+    GENESIS_HASH = ('000008f3b6bd10c2d03b06674a006b8d'
+                    '9731f6cb58179ef1eee008cee2209603')
+    DESERIALIZER = lib_tx.DeserializerSegWit
+    TX_COUNT = 264129
+    TX_COUNT_HEIGHT = 219574
+    TX_PER_BLOCK = 5
+    RPC_PORT = 25252
+    REORG_LIMIT = 1000
+    PEERS = [
+        'bell.electrumx.japanesecoin-pool.work s t',
+        'bell.streetcrypto7.com s t',
+    ]
+
+    @classmethod
+    def header_hash(cls, header):
+        '''Given a header return the hash.'''
+        import bell_yespower
+        return bell_yespower.getPoWHash(header)

setup.py

@@ -19,6 +19,7 @@ setuptools.setup(
         'xevan-hash': ['xeven-hash'],
         'x11-hash': ['x11-hash>=1.4'],
         'zny-yespower-0-5': ['zny-yespower-0-5'],
+        'bell-yespower': ['bell-yespower'],
     },
     packages=setuptools.find_packages(include=('electrumx*',)),
     description='ElectrumX Server',

tests/blocks/bellcoin_mainnet_412394.json

@@ -0,0 +1,14 @@
+{
+  "hash": "000004585973c0ce2c9f4c8be13983f901e712e808b1603ddc84c5fc1d630fe4",
+  "size": 281,
+  "height": 412394,
+  "merkleroot": "22d70bbc624844f38343efc35e551d5ce5110d7fddd450bf4a535c830a8a7b3b",
+  "tx": [
+    "22d70bbc624844f38343efc35e551d5ce5110d7fddd450bf4a535c830a8a7b3b"
+  ],
+  "time": 1561546385,
+  "nonce": 1896874112,
+  "bits": "1e0745c4",
+  "previousblockhash": "000001301d2ac66c89ebf7bed1bfaf9398efaea6c3fc2aa5da80efadab7eac40",
+  "block": "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"
+}