Maxcoin ElectrumX (Light Wallets)

Install

First you need to have the python base system requirements

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$ sudo apt-get update
$ sudo apt-get install build-essential python3 python3-dev python3-setuptools python3-pip virtualenv python3-multidict  python3-pytest libleveldb-dev

set the virtual enviroment

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$ virtualenv -p python3 myenv
$ source myenv/bin/activate

You can install electrumx after that. For testing, it is not necessarily needed, but that way you can see if all would work well or if there is something missing.

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git clone https://github.com/spesmilo/electrumx
cd electrumx
sudo python3 setup.py install

Maxcoin Info

Maxcoin Ports

Genesis

0x0000002d0f86558a6e737a3a351043ee73906fe077692dfaa3c9328aaca21964

Features

Shape-shifting software defends against botnet hacks

Algos

Schnorr / secp256r1

coins.py

First we need some info from maxcoin that is in the Maxcoin Info section, plus the following:

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curl --user maxcoinrpc --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "gettxoutsetinfo", "params": []}' -H 'content-type text/plain;' http://127.0.0.1:8080

Output by the syncing time:

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{
  "height": 4105438,
  "bestblock": "000000000000d98cff8824ce362c934bd97de404621ef854a32a68e2f345e780",
  "transactions": 887407,
  "txouts": 2136713,
  "bytes_serialized": 88311691,
  "hash_serialized": "2d8d1d8acc008e2b6da524f21e0e9b2b1a10f5a8d25b7b9f62f86f9d0b7b6a31",
  "total_amount": 75582558
}

TX_COUNT is the value “transactions”, TX_COUNT_HEIGHT is “height” and TX_PER_BLOCK is the result of TX_COUNT/TX_COUNT_HEIGHT. The values don’t have to match 100%, so for example use 2 for TX_PER_BLOCK even if the result is < 2.

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887407/4105438.0
0.21615403764470442

This is similar on how to add Maxcoin into the coins

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class Maxcoin(Coin):
    NAME = "Maxcoin"
    SHORTNAME = "MAX"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("6E")
    P2SH_VERBYTES = [bytes.fromhex("70")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('0000002d0f86558a6e737a3a351043ee73906fe077692dfaa3c9328aaca21964')
    DESERIALIZER = lib_tx.DeserializerSmartCash
    ENCODE_CHECK = partial(Base58.encode_check, hash_fn=lib_tx.DeserializerSmartCash.keccak)
    DECODE_CHECK = partial(Base58.decode_check,hash_fn=lib_tx.DeserializerSmartCash.keccak)
    HEADER_HASH = lib_tx.DeserializerSmartCash.keccak
    TX_COUNT = 869998
    TX_COUNT_HEIGHT = 3982932
    TX_PER_BLOCK = 1 # actually 0.21843154741281046
    RPC_PORT = 8669 
    
    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        return cls.HEADER_HASH(header)

Note: VERIFY THAT THE DESERIALIZER ALSO WORKS FOR MAXCOIN: This might be useful to search and compare with the smart cash

Maxcoin Test Block in ElectrumX

code section that generates it

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{ "hash": "000000000000bc8fff5727a0d9e59632b07b21f72bce7950a928175e82fbd2d0", "size": 185, "height": 100000, "merkleroot": "823f4b30b806e57a07144148d8f586264780bfc33f3632da8648b20ac9d2f014", "tx": [ "823f4b30b806e57a07144148d8f586264780bfc33f3632da8648b20ac9d2f014", ], "time": 1394729531, "nonce": 3303860448, "bits": "1b019144", "previousblockhash": "000000000000e84e3b6d60da9fc745eba5626a53fc79329c3fea8dd3a146287b", "block": "01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff1303a08601065321e23b1a8b4901000112000000ffffffff010060343c020000001976a91430be99cd8e08ea2472e1dd47fae0928f71f0724688ac00000000" }

If the rpc is running in the main net you can also test the output from block 10000 by using the following command:

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curl --user maxcoinrpc --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getblock", "params": ["000000000000bc8fff5727a0d9e59632b07b21f72bce7950a928175e82fbd2d0"]}' -H 'content-type: text/plain;' http://127.0.0.1:8080

Where the output might look like this:

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{
  "hash": "000000000000bc8fff5727a0d9e59632b07b21f72bce7950a928175e82fbd2d0",
  "confirmations": 273264,
  "size": 185,
  "height": 100000,
  "version": 2,
  "merkleroot": "823f4b30b806e57a07144148d8f586264780bfc33f3632da8648b20ac9d2f014",
  "tx": [
    "823f4b30b806e57a07144148d8f586264780bfc33f3632da8648b20ac9d2f014"
  ],
  "time": 1394729531,
  "nonce": 3303860448,
  "bits": "1b019144",
  "difficulty": 41810.1101982,
  "previousblockhash": "000000000000e84e3b6d60da9fc745eba5626a53fc79329c3fea8dd3a146287b",
  "nextblockhash": "0000000000014db84e52aa3aa03064bc096044bb37c7191fab91fe7d61604701"
}

ToDo

Search for electrum implementations of 365coin, Slothcoin or Cryptometh that are Keccak SHA-3 Based ToDo: Check with Oliver how does the “Block” section in the example code works.

https://github.com/Max-Coin/maxcoin/blob/master/src/base58.h#L275

Sources

1. https://github.com/spesmilo/electrumx

2. https://gist.githubusercontent.com/cipig/af7ff886ca92746c3cac55e90cfcdddd/raw/9e8e1860cd31763e822607648d2d447810dfb4dc/electrumx_addcoin.md

3. https://github.com/SmartCash/electrum-smart-server/commit/cc4b3e0b4076f2482683fd244ba048415eaa5b90