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Blockchain transactions tracker example for ETH and ERC20 tokens made with web3.js

JavaScript 100.00%

cryptocurrency web3js node blockchain

web3js-tracker-example's Introduction

Blockchain tracker example

Tracks Ether and Token transfers for given wallets and amount. Read more on Medium.

Requirements

Setup

git clone [email protected]:dsemenovsky/blockchain-tracker-example.git
cd blockchain-tracker-example
yarn install

Fill .env from .env.example with the token contract address, wallets and amount. Pluton token contract is provided for this example.

NODE_ENV=development

INFURA_URL=https://rinkeby.infura.io/CUNjkZ8qg6WZHqeFNJyL
INFURA_WS_URL=wss://rinkeby.infura.io/ws

ETH_BLOCK_TIME=30

TOKEN_CONTRACT_ADDRESS=0xb4e95c65c23cab8c4fcaf15e4936c392e6ab21bf

WALLET_FROM=
WALLET_TO=
AMOUNT=

Running

Simply start the service and make a transfer from one wallet to another on Rindkeby testnet.

yarn start

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malfasih frankloud davidarchi violettomsk jsidorenko dhnet maijiantian psapoznik leolujuyi macos 872409 r3sult wang-vei kj2797 nagkom liuis jesobreira kissthink lxmnsingh sagarsishir51 xxxamistxxx toluwaanimi ziyansuz fuckgm sanqima jamesdodo andgitcode edust navy1125 klyed macsenpugh flykye carbon-neutral gankhe zhangpandeng programming-enthusiast davmixcool jley81 alfydavy zbm2001 snake4life jerry612 realsearch-and-partners d3g3nerator 173970984 nhancv mehmetfg dhqthai whaleinvasion qudusayo shadiayoub dream-well bigchiano brodyaga-dev buggerbag liamk021 dinhnt12 cooldev900 jackey 0xtulaoda jchen706 turndealer berzavlu xgocn cortesa ilofy mrfelfel xmseo derbaltasar dmilano1 sccpoc fllaa akhdaniel jhwook flyxsj sathninduk totodo monika359b couldntcatchthebus cp-crypto rhop824 ethgr0wth dorothymbinya285 goaaksu rustychaps ianikghosh kutin9965

web3js-tracker-example's Issues

Transfert is not a function ?

Hi, thank you for sample !
do you understand why i have this error ? :
TypeError: tokenContract.events.Transfert is not a function

i'm using etherscan.io to get the ABI, is it right ?

Error when start forever

Hello

Please help me to check this issue
I have used your code for auto getting eth transaction.But after some time not getting transaction.
Could you help to check this

Thank You sir

I'm looking for some open source projects which monitor transactions (like centralized exchange) properly.
But I think your method don't handle chain reorg situation? in which case the transaction maybe rolled back, but still get confirmed?

Memory Issue

Hi,

this is very helpful for many developer but i am facing memory leak issue. service start consuming almost 80% cpu and 2GB memory just because of recursive call. How can i fix this. is there any alternate of recursive call.

i have almost 20 erc20 token and ETH in list.

Thanks in advance.

DeBug

How to debug?

Error when build your code

Hello

Please help me to check this issue
I tried to build your source
But I get txHash is alway null
Could you help to check this

My config is:

NODE_ENV=development

INFURA_URL=https://rinkeby.infura.io/v3/ef5539a42f1a419e87193393fe40f893
INFURA_WS_URL=wss://rinkeby.infura.io/ws

ETH_BLOCK_TIME=30

TOKEN_CONTRACT_ADDRESS=0x2958d4c19c6bc69ec1fee3ae643ef85a7bcfb1f6

WALLET_FROM=0xe5bf8b2419242287b071731d3f59858cf74c2c90
WALLET_TO=0x2958d4c19c6bc69ec1fee3ae643ef85a7bcfb1f6
AMOUNT=0.2

Please help to check this

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