It' a bit of an algorithm, or really just some math, to to the balance of an account. Instead of using the default "tokenSupply".
Fee is 1% (assuming no burn, just a general 1% fee)
tTotal is totalSupply and literally never changes
rTotal starts at 127366483000000 and continuously subtracts or adds
You buy 100 ...
Most proxy contracts typically have a public variable defined as a:
address public implementation;
Which defines the address of the implementation contract. You could then call it as a view function in python, with something like:
proxy_contract = web3.eth.contract(address=address, abi=abi_string)
implementation_contract_address = proxy_contract.functions....
If you are using the smart contact wrapper then you usually need to give one of the available transaction managers as a parameter and then give the chain Id when you initialize it
Web3j web3 = Web3j.build(new HttpService("https://bsc-dataseed.binance.org/"));
long chainId = 56;
FastRawTransactionManager txMananger = new FastRawTransactionManager(...
Since these are public endpoints, they are probably monitoring your usage by your IP address. So you can only do 10K requests/5min from your IP. It doesn't matter if you have more applications or accounts (since you don't need an account to use these endpoints anyway)
If you're looking for a higher rate limit BSC node, you should check out my company moralis....
Basically, what you want is to have a confirmation that a given block was included in the canonical chain. I assume that you do not need very high security because based on your examples a confirmation of only one block would be enough for your need.
I think that expending your second option could be a solution.
Alternative 1 - Validate double blocks with ...
You cannot do this through regular JSONRPC calls, but it is possible to limit the number of calls needed by using a smart contract. You can use the library eth-scan to do this for you. Simply pass in the array of addresses, and it will fetch the balance for each token through the eth-scan smart contract.
By default, the library will do a single call for ...
After give a look here and check this log and this transaction I tempted to conclude I'm just need to check the data of transaction. I conclude all contract deployment data I found starts with "0x60806040527f76".
Actually.... this is the start of the contract code...most like "pragma solidity bla bla bla" so this must be the Solidity ...
How would we get the price data points from web3?
Web3 has no concept of token value, as the value is speculative and differs between different markets.
You can either get the price from a particular market - e.g. Uniswap/Pancakeswap - or get a price from a service that provides a weighted average from a selection of different markets.
I believe Etherscan/...
The --rpc.txfeecap param on node should be changed to 0:
--rpc.txfeecap value Sets a cap on transaction fee
(in ether) that can be sent via the RPC APIs (0 = no cap) (default: 1)
info - https://geth.ethereum.org/docs/interface/command-line-options
Proof-of-work chains like Ethereum are probabilistic. The "longest chain" rule helps nodes determine the canonical chain but much ambiguity exists at the head of the chain. Uncertainty diminishes exponentially with each new block on the longest known chain. The different blocks you see are candidates and it is not uncommon to have more than one ...
Let's break this into two parts, with the caveat that you should look at the second before doing anything about the first.
Setting the gasLimit and gasPrice in Ethers
Here's the relevant part in the docs, but let's explain it. Whenever you make a transaction through Ethers, you can set overrides in an object after your arguments. In this case, this is your ...
Yes, I believe this problem is due to the deadline parameter of the addLiquidity method.
In your tx you have submitted a deadline of 7741799 which corresponds (https://www.epochconverter.com/) to Tuesday, March 31, 1970 2:29:59 PM
You can go to the pancakeswap router contract (https://testnet.bscscan.com/address/0xd99d1c33f9fc3444f8101754abc46c52416550d1) ...
The AMM is only checking that it is sending you the amountOutMin, not that you are receiving it. In other words, it calls a transfer for that token for an amount greater than or equal amountOutMin.
However, after the transfer is called by the AMM (from the pair to your address), the token contract burns the 9% tax you are mentioning. This is not captured by ...
I am able to get the token price from PancakeSwap api.
This is the PancakeSwap price, which is one particular market, and may or may not be similar to the aggregate price across multiple markets (which is what sites like CoinMarketCap and CoinGecko show).
CoinGecko has a free API that will return the data you want, though only includes the more popular ...
In the transaction that you linked to in your question, the person call a function swap() directly on the pair contract. The code of the pair contract is public (verified). So, in that case, yes you can see exactly what the public contract did when called.
However, calling the swap() function on a pair directly is a very bad way of doing ...
You get the tokens that make up the trading pair by calling following lines on the pair contract:
token0 = contract.functions.token0().call()
token1 = contract.functions.token1().call()
I used the code format you defined in your question above. In your example, the Razor token could be either token0 or token1, depending on the way that pair contract was ...
When a token is created, the from address is always the Burn address. Think of it as the "birth place" for that token.
But in general, NO, a burn address cannot send transactions. A burn address is an address that nobody owns the Private Key Off and thus nobody can verify transactions from.
This was a CREATION event rather than a 'asset transfer'
No, you can't make it with just smart contracts. Contracts are deterministic, which means they can't access outside resources directly.
You will need some sort of off-chain functionality, which acts as the bridge. So you need contracts at both ends of the bridge and the actual bridge which listens to events in the contracts to call the other end of the ...
The ERC-20 specification describes some events that a token contract must emit when doing certain actions, like transferring tokens. If you look at the logs for the transaction you linked for example, you can see a few Transfer events in there, including the address they were sent from and to, and the number of tokens that were transferred.
it depends on planning ahead and there might not be enough of that in this case.
Think of it like a spaceship you shoot into space, on its way to another planet and going as fast as your engineers know how to make it go. There is no way to catch up to it but you exchange messages by radio signals. So ... if you had the foresight to create a language and send ...
I was under the impression that Geth is essentially the node software. Is that not so?
It's one of the client implementations, yes. (There are other Ethereum client implementations that adhere to the spec, listed here. As far as I know there's only one implementation for BSC... which is the one controlled by Binance.)
If Geth is available on Windows, ...
is it possible?
Not without a fair amount of work.
When they forked Geth they switched the Ethereum Proof of Work consensus mechanism for their own Proof of Staked Authority consensus, called Parlia (basically to centralise it to 21 validator nodes... )
Looking at the relevant GitHub commit, adding Parlia is ~3,000 lines of relatively complex changes and ...
I gave up trying to ethereumjs-tx in the end as I came across this:
Managed to get that solution up and running it solved that particular error I was getting.
The main difference between Ethereum and BSC is the POS mechanism. To be a validator (miner) of blocks in BSC, you have to stake a big amount of BNB (ETH). It means committing a huge amount of capital just to be allowed to validate (mine) blocks. This is a security reason, so that validator have an incentive in the health of the network.
Committing a lot of ...
Sorry to add an answer but i can't comment.
I am also looking to add a token/BNB or token/WBNB pair in testnet but it doesn't work. Tried using https://testnet.bscscan.com/address/0xD99D1c33F9fC3444f8101754aBC46c52416550D1#writeContract, remix, truffle, web3, and none allow it.
I am able to add a token1/token2 pair but doing the BNB or WBNB doesn't work.