Questions tagged [binance]
Binance is a cryptocurrency exchange that provides a platform for trading various cryptocurrencies.
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Im trying to build a cryptocurrency(USD tether just like USD) that works with ethereum and polygon,
I happen to be relatively new to block chain, have an understanding of PoW and PoS, I'm learning Solidity at the moment, I'm supposed to design thi cryptocurrency that is compatible with ethereum and ...
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Test BNB / WBNB for Development testing purpose
I am in need of 100 test BNB for testing purpose but with faucet its not possible to get that much is there any way to have that much test bnb.
OR is there any existing liquidity of test BNB / WBNB ...
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Using the Freeze functionality as a user in the BNB contract
In the BNB contract there is the Freeze and UnFreeze functionality.
As I have understood, this doesn't allow Binance to freeze users’ balances. Instead, it allows any user to freeze and unfreeze their ...
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jsonrpc":"2.0","error":"[ethjs-query] while formatting outputs from RPC '"transaction underpriced\"
I'm trying to deploy a BEP20 contract using Remix on Binance TestNet, but I keep getting this error:
creation of TToken errored: Returned error: {"jsonrpc":"2.0","error":&...
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How handle loss with market maker bot?
i'm using a bot to do some market maker on exchange.
I still have one last issue, i don't know how to handle loss.
For example if price go down and my bot triggered buy just before the downtrend. I ...
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How to make payment gateway and confirm from transaction hash
I am looking for a payment solution for my website using crypto. I have seen some websites that display a modal with a QR code and a recipient address. I wonder how they know if someone has deposited ...
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Controlling metamask wallet full access through website
We are creating a site where we require full access to the user metamask, they will give approval of course and then we are able to trade their funds without asking every trade approval. I am sure its ...
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fun project i want to create a CEX
hey i want to create a centralized exchange just for fun project and to understand how things works. Is there any good open source project and good docs for that please? Thank you !
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Invalid sender when trying to send BSC transaction on Metamask
I'm trying to execute contract by adding in r,s,v values back from signature.
i keep getting "invalid sender" when i try to send the transaction.
it signs, it returns the hex then it shows ...
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I want to access several multi-sig wallets deployed with pragma solidity >=0.5.0 <0.7.0. How can I get the right frontend? Github Gnosis Safe v3.12.0?
I have several wallets that need to be accessed with the interface that was live on https://gnosis-safe.binance.org. When it changed to https://gnosis-safe.io/app/bnb I transferred several funds but ...
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0 value method transaction
Hey I have a question hope anyone can help me understand. I withdrew some USDC from Binance to my hardware wallet and noticed an automatic 0 value usdc method transaction about 5 min later. I withdrew ...
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Why BNB Chain is not working?
My transactions on BNB Chain are not going through. My BNB Chain node is not syncing.
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What is the difference between Binance Beacon Chain & Binance Smart Chain
What is the difference between Binance Beacon Chain & Binance Smart Chain
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how do i get token balance and send token on BEP20?
Hi i have came out my code but i am not sure i am anywhere near
what i am trying to achieve is
Getting the balance of token of Token eg(BNB)
Sending token after connected to metamask to another ...
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Transfer Bitcoin and other tokens through a Binance Smart Chain
How would one transfer tokens such as Bitcoin through a finance smart chain (so from Binance) to a hardware wallet like Trezor, in order to avoid higher fees? Also, which the third party could be used?...
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Binance Transaction issue, Metamask and Trezor
transaction from Binance does not appear on my Trezor wallet, MetaMask, or any other third-party wallets. When I search for the transaction history in Etherscan it says that it was successful under ...
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20 word recovery phase Metamask
I had a problem with transactions from Binance to Trezor, namely, the amount transferred did not appear in the app. So I am trying to connect my Trezor hardware wallet to a third-party one like ...
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Sending the same transaction to contract on Binance Smart Chain
Hey guys I want to send the same transaction that I sent days before.
https://bscscan.com/tx/0xd8e83d4f5bf2c687cf559ef3533629f419a6fc3fc896ac29304c0395cd95e861
How I can repeat it?
I tried with:
https:...
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Do binance trades happen on the blockchain?
When I trade (ethereum based) tokens on binance, do the tokens actually trade on the blockchain, or does binance just change the ownership in an internal database and only invokes the blockchain when ...
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Uncaught (in promise) Error: Returned error: unknown account Web3 js
I am Trying to Transfer BEP20 ACC Tokens on smart contract from my binance Wallet using Web3 js Library. Following is my implementation
const contract = new Web3.eth.Contract(CONTRACT_ABI, ...
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Can I run a bsc full node with this configuration?
I would like to run a bsc full node, as this is this takes time and is also my first time, could you please tell me if this configuration is enough:
1x Intel Xeon E5 1650
6 Cores / 12 Threads - 3,2 ...
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Accessing contract address
We have created a smart contract token on Ethereum , this contract address has received BNB funds , is there any way to access the balance ?
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Send 1 ERC20 TOKEN to anyone who execute the function
I have had this doubt for a long time.
I have a contract deployed that in the constructor mint 100 TOKENS (ERC20).
I have issues creatin a function in the smart contract WITHOUT Parameters that ...
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How do I obtain the balance of tokens in a BSC smart contract? [duplicate]
Let's say there is a BEP-20 staking pool contract on the BSC blockchain, and let's say (for extreme simplicity for this example) the address of that contract is "1234".
Upon reviewing the ...
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Warning! Error encountered during contract execution: out of gas
On BSC Testnet I have deployed a token contract https://testnet.bscscan.com/address/0xE5bB5e6Cf65dBE0062d1EBa9e36e64F89e3f0638
And also a TokenSale contract https://testnet.bscscan.com/address/...
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How can i deploy a smart contract with Multiple files
I am kinda new to this space. I just deployed my first smart contract to the BSC using Remix IDE. Now I used the very simple contract templates most online tutorials have always used. It is just a ...
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Unable to connect to BSC testnet with web3.js
From this tutorial, I learned the RPC URL for BSC Testnet is https://data-seed-prebsc-1-s1.binance.org:8545, but when I use it with web3.js like:
const web3 = new Web3('https://data-seed-prebsc-1-s1....
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Does transferring tokens from one wallet to another need more gas than trading or swapping?
I am new to blockchain and not sure if I am missing something.
When I tried to transfer eth from one wallet(metamask) to another, it is costing me
0.001eth(~5$).
But when I tried to trade eth for ...
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Persistent out of gas error with truffle latest on receive (Fallback) function
I am having a persistent issue programming receive fallback function on an smart contract where I am programming an staged pre-sale of a Token. When I try on Remix transaction looks as done, but it ...
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BEP-20 BNB vs. BNB
I have ETH (BEP-20) in my wallet.
I understand that to transact with it, I need some amount of BNB for gas.
My question is, do I need BNB or BNB (BEP-20) ?
I wish to eventually swap the BEP-20 ETH for ...
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Error: "false Transaction mined but execution failed" when trying to deploy my test coin
I was trying to deploy my contract to the Binance smart chain test network and it failed. A warning did appear before I proceeded saying:
Gas estimation errored with the following message (see below). ...
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Binance network: secure transaction verification
I have a BEP-20 token deployed under Binance Smart Chain.
I'm also trying to implement a web3 dapp that will send tokens from one address to another one and I need to verify this transaction on the ...
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Why did my transaction fail? (BEP20 token in BSC)
I just created a BEP20 token in Remix and deployed it on the BSC Testnet. When I try to transfer tokens from my Metamask account, give me this message in Transaccion Data:
Transaction decoding is not ...
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Setting up a full node while getting err="etherbase must be explicitly specified"
I was trying to setup a full node and getting err="etherbase must be explicitly specified".
I followed the steps here https://docs.binance.org/smart-chain/developer/fullnode.html and syncing ...
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How do I get currency ratio between Binance Coin and US Dollars?
I'm selling items online, and I would like to accept Binance Coin. Becaue of that I would like to know how much my item costs in Binance Coin to be able to accept offers from users using that coin.
My ...
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finding the sequence of functions executed when interacting with a contract
I have interacted with a contract on BSC Blockchain and know I want to know the sequence of functions executed with my transaction. I got my hands on transaction GETH traces using BSCscan but that ...
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Getting transaction history via Ethers.js
So I am new to blockchain development and I am trying to build a wallet just like the Metamask. I am struggling with displaying the recieved transactions. How dose one gets the recieved transaction ...
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Uniswap Router initialization in Ethereum mainnet versus BSC
I analyzed the source code contracts of several tokens, and I noticed a line of code that differs between two similar ones that I am trying to make sense of. Specifically, I would appreciate your ...
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web3.py " filter not found "
im using web3.py v5.19 in my project and we are on BSC mainnet
also i use bsc urls recommended in site to connect to nodes
this is my code to get events :
block_filter1 = contract.events....
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Newbie question: how can I send BNB to my ETH wallet?
I'm trying to send some USDTs from my ETH main-net wallet to my BSC wallet. Binance bridge complains "insufficient funds" as I have no BNB in my ETH wallet. So I am trying to send some BNB ...
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metamask insufficient funds for gas how do i fix this?
metamask insufficient funds for gas, i'm currently using the bsc and I have 18usdt there that I want to send to binance
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BEP20: transfer amount exceeds allowance
I want to swap bep20 tokens like BUSD - BNB and BNB - BUSD, i already approved tokens for the swapping but while i try to swap BNB - BUSD it's throw error like
BEP20: transfer amount exceeds allowance
...
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How to Calculate Jager using msg.value on Binance Smart Chain?
Very quick and likely easy question here. I am trying to code a crowdsale contract that accepts BNB and returns a number of tokens to the sender. My transactions keep failing because it says the BNB ...
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Can I send BNB and BEP20 token in the same web3 sendTransaction?
I'm trying to develop a javascript function to send BNB and a BEP20 token, at the same time, in one transaction, with web3.
let decimals = web3.utils.toBN(18);
let bnb_amount = web3.utils.toBN(...
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How to add availability to receive another tokens as a payment
I created some kind of nft marketplace, deployed to BSC. So gonna use BNB as a main payment.
Please advise how to solve the following questions:
How to add additional ERC20 token as a payment that is ...
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Can binance trace one's IP address or some other private data?
All the validators of the binance networks belong to Binance the company and as such as centralized, right?
In case something shady happens, such as a hack that has to do with a vulnerability in a ...
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Google pay payment using token
Can I use my token (BSC TOKEN) to pay on Google pay or any services which uses QRCode to receive payment.? Can anyone please share some links or code.?
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ETH mysteriously removed from my account around 12hours after using Binance Bridge
Perhaps someone can shed some light on this for me?
Recently joined the crypto world. Created a Metamask account, sent some test eth, all was fine. Had a family member send some BNB, then add some ...
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Keccak 256 Error
I encountered keccal256 error in binance smart chain based coin. This error occurred in a token generated with cointool.app. I came across this example. how to solve this error? https://blog....
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Smart Contracts developed for Ethereum can also be used in Binance Smart Chain?
I'm newcomer to blockchain and i'm starting to develop a new token, and i've seen many places telling the similarities between the two blockchains. And i read that BSC have a EVM(Ethereum Virtual ...
