Questions tagged [checksum]

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Are there any good tools, specifically code packages to checksum eth validator addresses?

Are there any good tools, specifically code packages to checksum eth validator addresses? They are longer than normal Ethereum addresses, and because of that I find the Web3 python library refuses to ...
Bruce's user avatar
  • 927
0 votes
1 answer
155 views

Converting checksummed address to non-checksummed address

I'm aware that the web3 library has the toCheckSumAddress method that converts an upper or lowercase Ethereum address to a checksum address. Am wondering if there is any method available that converts ...
code_learner93's user avatar
2 votes
2 answers
140 views

How to hardcode a big list of addresses with bad checksum?

I need to hardcode a big list of addresses that don't verify checksum (they're all low caps). address[] private list = [address(this), 0xabc...]; Compiler 0.8.17 ends with an error: SyntaxError: This ...
Bebs V's user avatar
  • 161
0 votes
0 answers
249 views

Workaround invalid checksum when using ETH Private Key to sign messages sent to contract

I'm using an ETH private key to sign messages sent to a contract. I'm recovering the address from the signature inside the contract to verify the message (This actually took me days to piece together ...
Aaron Skomra's user avatar
0 votes
0 answers
49 views

geth.exe checksum is differant than what is writen on the website but the installers checksum is correct. is this an issue?

I started syncing geth with this command he command: geth --rpc --etherbase <pulbic wallet adrress> --syncmode=fast --cache=2048 and about 25 hours later, the syncing stopped and this error ...
Sheeeev66's user avatar
2 votes
1 answer
728 views

Change a Checksum Address to Its Normal Hex Value

I know there are functions to convert hex address -> checksum address, but are there any to convert checksum address -> hex address?
Daniel Connelly's user avatar
3 votes
2 answers
883 views

How does EIP-55 prove a string is ACTUALLY a valid Ethereum address?

I wonder how EIP 55 check proves an address is actually an Ethereum address, or does it prove this at all? Am I missing an obvious point in Vitalik's code below from EIP 55? from ethereum import ...
ehsan0x's user avatar
  • 144
0 votes
2 answers
79 views

web3js returns non-checksumed addresses!

Why does web3js 0.20.6 returns all-lowercase addresses on contract creation not a checksumed address?! How to deal with this trouble?
porton's user avatar
  • 1,744
2 votes
2 answers
2k views

Address checksum Solidity implementation

Looking at EIP-55, there are quite a few client-side address checksum implementations provided but no Solidity implementation. Are there any existing examples of computing address checksums directly ...
0age's user avatar
  • 81
0 votes
1 answer
915 views

What does Error: Provided address "1.2870172725867908e+48" is invalid, the capitalization checksum test failed

I have assigned my variables here > var contractAddress = 0xb5A5F22694352C15B00323844aD545ABb2B11028 > var cont = new web3.eth.Contract(abi, contractAddress) I am getting the error : ...
Ty Cooper's user avatar
0 votes
1 answer
145 views

Checksum vs. Hash: Differences and Similarities ? [closed]

What are similarities and differences between a "checksum" algorithm and a "hash" function? Can they be used instead of each other? Or their usage are different? For example, for verifying the ...
Questioner's user avatar
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3 votes
4 answers
23k views

How to fix checksum mismatch in downloaded node for Ethereum Wallet?

I attempted to update Ethereum Wallet to 1.8.2 and was given an error: Checksum mismatch in downloaded node! MD5: 308... Please install the geth node version 1.8.2 manually So I went to https://...
John Murphy's user avatar
9 votes
1 answer
14k views

Remix Warning: This looks like an address but has an invalid checksum

I have the following contract: pragma solidity ^0.4.13; contract Test { function test() public payable { address(0xCF5609B003B2776699EEA1233F7C82D5695CC9AA).call(1); } } The Remix ...
medvedev1088's user avatar
  • 10.9k
8 votes
5 answers
14k views

What is the tool for address checksum?

I have an error from web3: Unhandled rejection Error: Given address "0x" is not a valid Ethereum address. My question is if is there any tool that can fix my address (add checksum).
gkucmierz's user avatar
  • 773
1 vote
1 answer
6k views

Is possible to check if a address belongs to an exchange?

Most of the exchanges do not accept utility tokens from a contract. Is there a way to validate/check if the target address is/belongs to a exchange?
Ernane Luis's user avatar
2 votes
1 answer
313 views

Checksum calculation for icap address

I am integrating the new coin, for this i need to create the ICAP address. In this address generation process, we need to generate the checksum, for this how i may create the checksum. example my ...
Veera Sarma's user avatar
11 votes
2 answers
5k views

Some characters in Ether addresses have changed to capitals after upgrading Mist

I recently upgraded Mist from 0.3.9 to 0.5.0. I have noticed that the capitalisation of some of the characters in my public address have changed. Is this normal?
calkob's user avatar
  • 111
4 votes
2 answers
347 views

What's an "indirect ICAP address"?

The ethereum wiki has a specification of basic, direct and indirect ICAP addresses. Where the basic and the direct are well explained here and here, I have trouble to understand how indirect ICAP ...
q9f's user avatar
  • 32.8k
3 votes
1 answer
230 views

How strong are the checksums in Ethereum addresses?

2 options for Ethereum addresses which have checksums are ICAP and EIP55. Are there others? For each option, how strong are the checksums? What is the chance that a typing mistake (or mistakes) ...
eth's user avatar
  • 85k
89 votes
9 answers
111k views

How can I check if an Ethereum address is valid?

I've read many times that you should never input an address by hand unless you want to accidentally send Ether into no-mans-land. I'd like to know what those checksums might be. Is there a way to ...
ZMitton's user avatar
  • 2,720
3 votes
1 answer
214 views

What options are suitable for Ethereum addresses with checksums?

Since Ethereum addresses don't have checksums, should ICAP addresses (which do have a checksum) be proliferated? Or are there other options more suitable for the proliferation of checksummed ...
eth's user avatar
  • 85k
9 votes
1 answer
4k views

What is an ICAP address?

It appears ethereum is using plain hexadecimal addresses like 0x0092e965928626f8880629cec353d3fd7ca5974f for now. I noticed, the ethereum C++ implementation outputs so called ICAP addresses, check ...
q9f's user avatar
  • 32.8k
56 votes
4 answers
19k views

Why don't Ethereum addresses have checksums?

A checksum, similar to its use in Bitcoin addresses, can primarily prevent mistyped or invalid addresses from being used, before a transaction with an invalid address is constructed. Why don't ...
eth's user avatar
  • 85k