ScanWatch 0.2.0

Local tracker for address on Ethereum, BSC and Polygon chains

Note

This library is developed and maintained by EtWnn, feel free to drop your suggestions or remarks in the discussion tab. You are also welcome to contribute by submitting PRs.

Source Code:

https://github.com/EtWnn/ScanWatch

Documentation:

https://scanwatch.readthedocs.io

This library is a local tracker of transactions for the Ethereum chain, the Binance Smart chain and the Polygon chain.

It is a simple single-point interface with the etherscan, bscscan and polygonscan APIs.

This library will save locally the transactions to gain time and avoid over-calling the APIs.

Announcement

🚨 🚨 🚨

If you previously used this library with a version inferior to 0.1.3, please head here to correct a potential bug in the database.

🚨 🚨 🚨

Quick Tour

1. API Keys

You will need to generate API tokens to use this library:

1. Ethereum chain: go on etherscan

2. Binance Smart chain: go on bscscan

3. Polygon chain: go on polygonscan

(If you want to use several chains, you will need an API token for each).

2. Installation

ScanWatch is available on PYPI, install with pip:

pip install ScanWatch

You can also install the latest developments (not stable):

pip install git+https://github.com/EtWnn/ScanWatch.git@develop

3. Manager

The manager is the object that you will use to update and get the transactions.

It is instantiated with an API token and an address.

Example for Ethereum:

from ScanWatch.ScanManager import ScanManager
from ScanWatch.utils.enums import NETWORK

api_token = "<ETH_API_TOKEN>"
address = "<YOUR_ETH_ADDRESS>"

manager = ScanManager(address, NETWORK.ETHER, api_token)

Example for BSC:

from ScanWatch.ScanManager import ScanManager
from ScanWatch.utils.enums import NETWORK

api_token = "<BSC_API_TOKEN>"
address = "<YOUR_BSC_ADDRESS>"

manager = ScanManager(address, NETWORK.BSC, api_token)

Example for Polygon:

from ScanWatch.ScanManager import ScanManager
from ScanWatch.utils.enums import NETWORK

api_token = "<POLYGON_API_TOKEN>"
address = "<YOUR_POLYGON_ADDRESS>"

manager = ScanManager(address, NETWORK.POLYGON, api_token)

4. Transactions Update

Once the manager is setup, you can update the locally saved transactions:

manager.update_all_transactions()
# all transactions updated for address 0xaAC...748E8: 100%|████████████| 4/4 [00:02<00:00,  1.86it/s]

This needs to be done only when new transactions have been made since the last time you called the update method.

5. Transactions

To fetch the transactions that have been previously saved, just use the methods below. (see the documentation for more details).

from ScanWatch.utils.enums import TRANSACTION

manager.get_transactions(TRANSACTION.NORMAL)  # normal transactions

manager.get_transactions(TRANSACTION.ERC20)  # erc20 transactions

manager.get_transactions(TRANSACTION.ERC721)  # erc721 transactions

manager.get_transactions(TRANSACTION.INTERNAL)  # internal transactions

6. Holdings

The manager can also give you the current tokens hold by an address:

For erc20 tokens:

manager.get_erc20_holdings()

{
    'USDC': Decimal('50'),
    'AllianceBlock Token': Decimal('12458.494516884'),
    'Blockchain Certified Data Token': Decimal('75174'),
    'Compound': Decimal('784.24998156'),
    'ZRX': Decimal('3.1')
}

For erc721 tokens:

manager.get_erc721_holdings()

[
    {
        'contractAddress': '0x8azd48c9ze46azx1e984fraz4da9zz8dssad49ct',
        'tokenID': '78941',
        'count': 1,
        'tokenName': 'SUPER NFT GAME',
        'tokenSymbol': 'Hero'
    },
    {
        'contractAddress': '0x6edd39bdba2fazs3db5fxd86908789cbd905f04d',
        'tokenID': '33001',
        'count': 1,
        'tokenName': 'MY FAV NFT ARTIST HANDMADE THIS',
        'tokenSymbol': 'dubious thing'
    }
]

Main / test nets

If you want to switch from main to test nets, you can specify the net name at the manager creation:

manager = ScanManager(address, <network>, api_token, <net_name>)

Supported nets are:

• For Ethereum: “main”, “goerli”, “kovan”, “rinkeby”, “ropsten”

• For BSC: “main”, “test”

• For Polygon: “main”, “test”

Donation

If this library has helped you in any way, feel free to help me 😊

With your donation, I will be able to keep working on this project and add new features. Thank you!

• BTC: 14ou4fMYoMVYbWEKnhADPJUNVytWQWx9HG

• ETH, BSC, Polygon: 0xA20be1f02B1C9D4FF1442a0F0e7c089fcDd59407

• LTC: LfHgc969RFUjnmyLn41SRDvmT146jUg9tE

• EGLD: erd1qk98xm2hgztvmq6s4jwtk06g6laattewp6vh20z393drzy5zzfrq0gaefh