All Questions
Tagged with deployed-bytecode bytecode
16 questions
0
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24
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etherscan api not returning contract bytecode for some contracts
For some contracts, the Etherscan api returns empty bytecode (0x). For example for:
8AB399CBB9FDB9A36518A7E7EDDF89158E56C595 (even though the contract exists: https://etherscan.io/address/...
- 243
34
votes
4
answers
12k
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What is the difference between bytecode, init code, deployed bytecode, creation bytecode, and runtime bytecode?
I constantly see different types of bytecode and do not know what each of them are. What are the differences between bytecode, init code, deployed bytecode, creation bytecode, and runtime bytecode?
2
votes
1
answer
565
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Does address.code return runtime or creation code
You have three options to retrieve bytecode: type(C).runtimeCode which returns the runtime code of a contract, type(C).creationCode which returns the creation code of a contract and address.code which ...
CommunityBot
- 1
0
votes
1
answer
169
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Runtime bytecode not contained in creation bytecode
I'm currently delving into EVM and contract bytecode.
My understanding is that by sending a transaction to the NULL address with both the initcode and contract code, and ensuring that the init code ...
- 30.3k
4
votes
3
answers
3k
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How to deploy a bytecode-only contract without an ABI
I see a contract's bytecode on chain that I want to re-deploy almost verbatim, but the issue is that there's no verification -- no ABI or source code. Can I still redeploy this contract to a hardhat ...
- 26
1
vote
2
answers
2k
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type(C).creationCode who has access to this?
Who has access to this?
For example, if I call type(SimpleStorage).creationCode, wouldn't this cause an issue because there are a lot of SimpleStorage's
How does the type() function know the specific ...
- 1
2
votes
1
answer
57
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Should all method hashes be found in a smart contract's opcodes?
I have a compiled/deployed solidity smart contract for which I have encoded all the functions signatures. (4-byte hashes)
With the deployed bytecode, I have parsed the pushdata into an array for all '...
- 31
3
votes
2
answers
2k
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Difference between `bytecode` and `deployedBytecode` (especially for contracts with constructor args)
Suppose I have a contract like
pragma solidity ^0.8.17;
contract MyContract {
constructor(string arg1, uint arg2) {
...
}
...
}
When I compile the solidity contract (actually ...
- 217
1
vote
0
answers
80
views
Why am I not able to access the storage of a contract deployed with bytecode?
I'm learning about EVM and I was trying to write a simple smart contract using bytecode only. What the contract is supposed to do is write the number 202 to storage slot 0 read from the storage and ...
- 23
3
votes
3
answers
539
views
Bytecode: Does it Reveal What Language it Was Programmed In?
Does EVM bytecode have some indication to what high-level language it was programmed in?
- 2,784
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0
answers
34
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Figure out the address used at construction time for a regular smart contract
Is there anyway to figure out what was the address used at construction time and find it in the bytecode?
For example I know that for libraries they are storing it in the contract in order to be able ...
- 106
0
votes
0
answers
64
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How is it the case that a contract's deployed code is longer than 24.576KB given EIP 170?
The deployed code associated with the contract address 0x05c848E3547Bc3Ccd977B84140FDC917Bfff96a1 is longer than EIP 170 permits (I think?). I know I'm misunderstanding something, but am struggling to ...
1
vote
0
answers
39
views
Transaction data for contract creation: What's the data before the contract bytecode? [duplicate]
When a contract is deployed, the bytecode of the contract shows in the raw transaction data for the transaction that created the contract, along with constructor arguments after the contract bytecode ...
- 103
0
votes
1
answer
142
views
Different byteCode generated between block explorer and standard json input
I have deployed a contract and want to verify it, but when I used the same code with same configurations of compiler to verify it, it gave me negative result. Thus I tried to decompile these two ...
- 33
1
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0
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152
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How to look up IPFS url in Ethereum Bytecode meta data
I have a solidity contract that is deployed on the Ethereum mainnet. The contract's bytecode ended with (what I assume to be) an IPFS url
{ipfs}64736f6c634300060c0033
How do I look up this URL on ipfs?...
- 553
17
votes
1
answer
3k
views
What's the difference between solc's bin bytecode versus bin runtime?
Solc says that bin-runtime is the runtime part of the contracts. What exactly is the runtime bytecode part and how does it differ from bin bytecode output?
- 33k