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The ERC20 Token Standard is a set of 8 functions to be included (in an agreed upon language) in a smart token contract in order to enable interoperability across multiple interfaces and dapps. These functions relate to (1) how tokens can be transferred (2) how to access data about the token, and (3) how to format key events like transfers and approvals. ERC stands for Ethereum Request for Comments.
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Is it possible to find a specific statistic for each token?
I'm trying to create some sort of statistic generator related to ERC20s. Let's assume you have 10,000 Token A. I would like to tell users something like: "better than 0.5% of the accounts". Basically …
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Can I have a listener to cryptocurrencies / tokens reaching a specific address?
Let's say that there is an address called 0x1
There is another address called 0x2 which just released a new token called ABA.
Is there a way to constantly listen for 0x1 to see if it receives ABA fr …
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DAPP WALLET transaction always fails
To improve my skills in solidity I'm working on a "wallet dapp". Based on smart contracts only, users can send ERC20 to another wallet. It works like that:
user gives the following parameters: crypto …
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2
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Create token exchange by defining decimal values
I've just learned a lot about Solidity and decided to put it into practice.
Something I truly don't understand is how I can bypass the limitations of this programming language.
Assume the following …
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1
answer
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How can I wait if it's not possible in smart contracts? [duplicate]
From my understanding, waiting in a solidity smart contract would create a total disaster for the whole Ethereum's blockchain.
I can see in some circumstances that solidity offers block.timestamp an …
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How can we detect if tokens are transferred to our smart contract and avoid "allow"?
Imagine you have a smart contract that accepts all forms of ERC20s. You want users to call a function by which they will send you their ERC20s and in exchange receive a greeting.
Technically we can …