Add support for Bitsend (BSD) (#738)

electrumx/lib/coins.py

@@ -2758,3 +2758,50 @@ class Sparks(Coin):
     def header_hash(cls, header):
         import neoscrypt
         return neoscrypt.getPoWHash(header)
+
+
+# Source: https://github.com/LIMXTEC/BitSend
+class Bitsend(Coin):
+    NAME = "Bitsend"
+    SHORTNAME = "BSD"
+    NET = "mainnet"
+    XPUB_VERBYTES = bytes.fromhex("0488B21E")
+    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
+    P2PKH_VERBYTE = bytes.fromhex("66")
+    P2SH_VERBYTES = [bytes.fromhex("05")]
+    WIF_BYTE = bytes.fromhex("cc")
+    GENESIS_HASH = ('0000012e1b8843ac9ce8c18603658eaf'
+                    '8895f99d3f5e7e1b7b1686f35e3c087a')
+    TX_COUNT = 974672
+    TX_COUNT_HEIGHT = 586022
+    TX_PER_BLOCK = 2
+    RPC_PORT = 8800
+    REORG_LIMIT = 1000
+    DESERIALIZER = lib_tx.DeserializerSegWit
+    XEVAN_TIMESTAMP = 1477958400
+    PEERS = [
+        'ele1.bitsend.cc s t',
+        '51.15.121.233 s t'
+    ]
+
+    @classmethod
+    def header_hash(cls, header):
+        from datetime import datetime
+        timestamp, = util.unpack_le_uint32_from(header, 68)
+        t = datetime.fromtimestamp(timestamp).strftime("%A, %B %d, %Y %I:%M:%S")
+        version, = util.unpack_le_uint32_from(header, 0)
+        if timestamp > cls.XEVAN_TIMESTAMP:
+            import xevan_hash
+            return xevan_hash.getPoWHash(header)
+        else:
+            import x11_hash
+            return x11_hash.getPoWHash(header)
+
+    @classmethod
+    def genesis_block(cls, block):
+        header = cls.block_header(block, 0)
+        header_hex_hash = hash_to_hex_str(cls.header_hash(header))
+        if header_hex_hash != cls.GENESIS_HASH:
+            raise CoinError('genesis block has hash {} expected {}'
+                            .format(header_hex_hash, cls.GENESIS_HASH))
+        return header + bytes(1)

tests/blocks/bitsend_mainnet_571000.json

@@ -0,0 +1,14 @@
+{
+  "hash": "0000000001b4c0cb741826a3236dfec65bafa6c901017ec2fe2b2662c6ec61cd",
+  "size": 271,
+  "height": 571000,
+  "merkleroot": "06fd61c7db6ba8d545b2c526c97f12d38474c9d5af8db804628c6c85c187a7b1",
+  "tx": [
+    "06fd61c7db6ba8d545b2c526c97f12d38474c9d5af8db804628c6c85c187a7b1"
+  ],
+  "time": 1545267703,
+  "nonce": 679226306,
+  "bits": "1c028ff3",
+  "previousblockhash": "0000000002342e7f451c92b854ca068e1ea74d63405c01474ba05f80f0339078",
+  "block": "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"
+}