Questions tagged [addresses]
Addresses are the particulars of names, domains or accounts on the blockchain.
81
questions with no upvoted or accepted answers
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votes
1answer
239 views
What are 'payable' state variables?
https://solidity.readthedocs.io/en/latest/solidity-by-example.html#simple-open-auction
pragma solidity ^0.4.22;
contract SimpleAuction {
address payable public beneficiary;
What exactly does ...
4
votes
1answer
132 views
Receive deployed contract address by transaction hash with JSON-RPC request
I want to receive deployed contract address by transaction hash.
Transcation example - 0x996a683acd59a2ad17461f76ce0f387a89a5ac257ec5d667556219c6acc7f45a.
As you can see this contract was deployed by ...
4
votes
3answers
160 views
Can a contract control another address?
Say I have control of addresses A and B, and I am writing contract C. When I deploy C on the blockchain, it will have it's own address, that can send and receive ether. But I want to have a method on ...
3
votes
1answer
207 views
Create Accounts Using Web3.js in Browser
TL;DR - Replicated Ethereum Blockchain. Running Local Node. Connecting Local Node to Web3.js in browser using RPC. Want to create addresses & send transactions
Details -
I have a blockchain that ...
3
votes
0answers
187 views
How to transfer coins from Super Contract back to account
Some funds were mistakenly transferred to an ethereum based smart contract address instead to a personal address.
Is there any way anyone (coin developers maybe) can transfer coins from this smart ...
2
votes
2answers
30 views
How to generate a new token for ERC1155?
Developing an ERC1155 contract, how to generate an address for a new token?
I need to create an API function like function createToken() returns (address). How?
Should I just use an incrementing-by-...
2
votes
0answers
39 views
Combine two addresses into one
I want Solidity code to define a function f that would map two Ethereum addresses A, B into a new address X = f(A,B) such that there is nearly zero probability that X is an already taken address (an ...
2
votes
1answer
329 views
Do all Ethereum addresses have a specific format?
I know all ethereum addresses start with 0x, but is there a common letter/number after the 0x to represent an address? Because I get confused on how to tell if its an Eth address or if its a ...
2
votes
1answer
143 views
Communicating between a Sidechain and a Mainchain
Side chains (see linked question ) can be seen as a blockchain attached to a "parent" blockchain using a "two way" peg. Smart contract addresses are generated deterministically(HD wallet style), but ...
2
votes
0answers
230 views
How to export extended (master) public key from MetaMask
I want to export extended public key for watch-only access to all ethereum addresses in the MetaMask HD wallet at once. It's very usefull for tracking of all portfolio/wallets in one place, especially ...
2
votes
0answers
223 views
What exactly is an extended public/private key?
How do they differ per derivation level? For example is the extended public key of the master node equivalent for all intents and purposes as a depth 3 node's extended public key?
Therefor can I ...
2
votes
0answers
115 views
How get public address from State Root leaf node (code inside)?
In article "Understanding the ethereum trie"is written that:
For the state trie, the keys are ethereum addresses.
So i obtain State Trie and in that trie I got Merkle Leaf node:
['9:', ' LEAF ...
2
votes
2answers
520 views
How to programmatically generate sub addresses using the root address in hd wallet?
And without using the private key. I've been digging into the ConsenSys's eth-lightwallet, although it uses a derived private key to generate the address which would expose the root private in danger.
...
2
votes
1answer
258 views
convert padded topics address to valid address string
I am parsing some information from the topics array.
I receive 32bit padded addresses in some indexes. Is there a web3 utility function or useful helper method to get these back into normal sized ...
1
vote
1answer
62 views
Enigma “secret contract” and concealing transactions history: How is it possible?
Enigma protocol is a second-layer, off-chain network that aims to solve privacy issues in blockchain.
However
In Enigma blog, there is an article (Link to Article), explaining the secret contract, ...
1
vote
0answers
62 views
Ecrecover wrong address is returned
I'm trying to validate signed data with ecrecover.
The message is signed like this on the FE:
return this.web3.eth.personal.sign( `${nonce}`, publicAddress ).then( ( signature ) => {
...
1
vote
0answers
36 views
Is there a way to figure out if 2 (or more) address is belong to same HD Wallet account or not?
I'm a new to Wallet concept, I know that a HD Wallet structure is created from a root seed as Mnemonic Code, from that HD Wallet help to generate child keys as the meaning of multiple difference ...
1
vote
0answers
35 views
What useful information can we get from ethOS mining log?
What useful information can we get from ethOS mining log information ?
For example, can we find the ethereum address of this miner from this log information ?
1
vote
1answer
117 views
Byte32 error, even after converting string to hex
I looked everywhere for people with similar problems, but I couldn't find anything.
I am confused why I keep getting this error (yes, I know others have had this error too, but not for the same ...
1
vote
1answer
160 views
How to have an address inside a solidity Struct?
My problem
Suppose I have this struct:
struct TextThatWorks {
bytes32 text;
uint reads;
}
How can I add a address variable to it?
What I tried
I tried simply adding address ...
1
vote
1answer
477 views
ERC20 tokens transactions' history from Ethereum node
I have a parity node. I developed a web3.js interface on top of it.
I have APIs whose job is to fetch addresses' balances and transactions.
Example response of transaction API:
{ tx_hash: '...
1
vote
1answer
1k views
How to get the balance of a contract using web3.js?
I have deployed a contract as follows and determined its balance to be 5000 wei (value: 5000):
const thisContract = new web3.eth.Contract(abi);
thisContract.deploy({
data: bytecode,
...
1
vote
3answers
180 views
Transaction receiving ether from a contract address
Are transactions sending ether from contract addresses to normal addresses listed in block.transactions or are they not trivial to detect?
If not in block.transactions than how to detect?
1
vote
0answers
446 views
Whats going on with these mysterious ethereum addresses?
A while ago I found website ethersecret.com which turned out to be very interesting; it provides a search engine for ethereum private keys and their corresponding addresses and whether they hold any ...
1
vote
0answers
25 views
How load out data from blockchain when it occupies too much space?
If the blockchain working long enough it fills the memory of the mining device, how to load out the data and then rerun the system?
and why does my mining device has different miner address every time ...
1
vote
0answers
155 views
Mist main wallet address changed after instalation
During the instalation of mist on a mac I get to the following screen:
I then have to wait for synching to complete. During this time I can deposit ether into my wallet using Bitcoin or just use the ...
1
vote
0answers
307 views
I accidentally sent the same transaction twice because it was pending
I seem to have gotten myself in a bit of a pickle. I sent some ether to another one of my wallets. The gas price was too low and it was pending for hours.
I read online that if you send the same ...
1
vote
0answers
434 views
MyEtherWallet - address doesn't match
Well, I'm pretty certain I' screwed, but I figured I'd ask for help just in case.
I created one, and only one wallet on MEW. I was meticulous about saving my Private Key and address correctly. I ...
1
vote
1answer
444 views
C# - Convert Ethereum ABI Address To String (Solidity)
I'm new to Ethereum so please excuse my ignorance. Ethereum seems to have an ABI serialization protocol called Solidity. The spec is here:
https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI
...
1
vote
0answers
137 views
How to collect addresses with a specific token
I run a local eth node on my server and would like to collect all addresses which hold a specific token.
In addition I'd like to supply them with another token.
One way I researched is to send them ...
1
vote
1answer
450 views
Is creating new account per unique user OK in Ethereum?
When using Bitcoin one can generate new address per user of service and save pair (address -> userId), so it is always obvious which specific user sent coins.
Also, all these coins are stored in the ...
1
vote
0answers
192 views
Link a profile page to an ethereum address?
If I have made a page with meteor where a user can login and see his own personal profile page, is it then possible to link that profile page to an ethereum address, so the user can update his profile ...
1
vote
2answers
637 views
Problem to use an address within a contract. Error: invalid address
I have a private blockchain.
I am creating a contract and then I am calling a function that returns the main account. I have the error calling this function.
This is the contract creation code:
var ...
1
vote
0answers
206 views
How to convert Ethereumj byte arrays to Strings?
Ethereumj gives a lot of byte arrays, when the equivalent would be a string in Bitcoin. A few examples (in Scala)
ECKey.getAddress // returns Array[Byte], need String
Transaction.getHash // returns ...
1
vote
0answers
89 views
Account/Contract address of people responsible for Ethereum Attacks?
I believe there has been a hard fork following the DAO attack; I guess it's not possible to get the contract/account address for the person responsible, unless I am wrong and there is a way, please ...
1
vote
0answers
1k views
Is my address valid?
I'm using Blockcypher's API (https://dev.blockcypher.com/eth/#generate-address-endpoint )to generate Ethereum addresses. One such address that has been generated is :-
Public Address (...
1
vote
0answers
83 views
Is it possible to convert Ethereum merkle patricia trie to [{address: balance}, {address: balance}, {address: balance}… ]?
From Merkle Patiricia Trie, seems to be difficult to get all keys, so the only way to make [{address: balance}, {address: balance}, {address: balance}... ] for all accounts (including contracts), ...
1
vote
4answers
449 views
How to implement a watching wallet for thousands/millions of addresses
I need to check for customers' deposits and need to scan for receiving transactions for those addresses for Ether and in next step ERC-20 tokens. What's the most efficient way to do this with go-...
0
votes
1answer
17 views
The method eth_sendTransaction does not exist/is not available - web3.py
I am trying to send data to the contract, but I am getting the following error:
The method eth_sendTransaction does not exist/is not available
This is the code:
from web3 import Web3
web3 = Web3(...
0
votes
1answer
17 views
Generating an address from a public key in C++
Example:
Input key = 0x025f37d20e5b18909361e0ead7ed17c69b417bee70746c9e9c2bcb1394d921d4ae
Output address = 0xd09D3103CcABfb769eDc3e9B01500Ca7241D470A
I have been using an algorithm from keccak-tiny....
0
votes
1answer
27 views
How can I implement redactable chain for ETH?
I am trying to research about Redactable blockchain so my question is how can I implement a Redactable chain in Eth if someone has some idea about it I will be thankful
0
votes
0answers
26 views
Ethereum payment processor Nodejs
I'm working on a web project where I need to have the ability to accept crypto payments. Implementing bitcoin was fairly easy as there were api's whom allowed me to directly subscribe to a specific ...
0
votes
1answer
36 views
Is there any API to create Addresss and wallet as well as make transfer for ETC (Ethereum Classic)?
There is balance checking, transaction list and transaction receipt getting APIs available for Ethereum Classic (ETC)?
Is ETC coin is only available on Ethereum Classic or its listed block explorer ...
0
votes
1answer
14 views
Address Payable and New Contracts
The following compiles in 0.4.26, but not 0.5.0. The error is "Type contract CustList is not implicitly convertible to expected type address." I figure it's something with address payable, but I have ...
0
votes
0answers
31 views
The reasons behind using public/private and addresses?
I understand that we need a public/private key so anyone can sign a message and miners can verify the signature using the public key. But, In this Question Relationship between Ethereum Address and ...
0
votes
0answers
25 views
Are there any examples of ETH addresses that periodically send or receive funds at regular intervals?
I'm looking for any known ETH addresses that send or receive money at regular intervals. For example, once per day, an amount from a hot wallet might be sent to a cold wallet. Are there any widely ...
0
votes
1answer
198 views
MetaMask - RPC Error: Error: WalletMiddleware - Invalid “from” address
I'm trying to create a simple Dapp (via tutorial) which would allow me to send Ether from sender to receiver (via a contract with an address that automatically approves the transaction). The truffle ...
0
votes
1answer
111 views
How to convert Postgres BYTEA format to Ethereum string address (PYTHON)?
Bytea (hex) is format of PSQL. It is used by many explorers/dapps/apps to store ethereum address. how to convert this format to Python String?
By default it is read as a memory view.
More on Bytea: ...
0
votes
2answers
21 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?
0
votes
1answer
69 views
how do etherscan get all the token balance of particular address?
I want to create service where just by providing address i can fetch all the token (erc 20 & erc721) balance just like etherscan for a private network?
is there any way to do it by writing for ...
