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Questions tagged [addresses]

Addresses are the particulars of names, domains or accounts on the blockchain.

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Is there a service to email or alert me for ONLY incoming transactions to my address?

Is there some type of service that can monitor my account for only incoming transactions to my address? I found a few, but they also email me when I send something out which can be annoying.
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1answer
23 views

What DSAuthority(0) and eos.owner() means and does?

In ERC20 EOS crowdsale contract, what these three lines(469-471) does? function initialize(DSToken eos) auth { assert(address(EOS) == address(0)); //[Someone explained this line here][...
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1answer
8 views

Is it likely to receive more token airdrops to one of the original Ethereum addresses from the crowdsale?

Is it likely to receive more token airdrops to one of the original Ethereum addresses from the crowdsale? Hi there, I participated in the original Ethereum crowdsale and I used to store a certain ...
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0answers
23 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 ) => { ...
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2answers
25 views

truffle pet shop example question(address convert) [duplicate]

I have some question about truffle pet shop example ,here is the original link pet shop, when I work this command:truffle test , and I have some compile problem. here is original code: I have some ...
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1answer
41 views

A solidity 0.5.x function to convert adress-string to ethereum address

I'm looking for a Solidity 0.5.x compatible function to convert a string with and address like "0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe" into a real address. I did use this function: function ...
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0answers
30 views

Generate derivated address from xpub

I managed to get Bitcoin addresses from xpub using bitcoinj with this code : DeterministicKey hd = DeterministicKey.deserializeB58("xpub...", MainNetParams.get()); DeterministicHierarchy hi = new ...
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1answer
77 views

Initial ERC20 Token supply split into 2 or more hardcoded addresses

don't know if someone can help me, but let me explain my problem. For more transparency in my ERC20 token generation smart contract, I want to hardcode the Team Pool (0xA) and Crowdfunding Pool (0xB) ...
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2answers
43 views

Check if a variable exists in external contract

kinda new to the development side of Ethereum. Been searching around for days but can't seem to find an answer for my specific case. I'm trying this challenge here. The problem is that I can't seem ...
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1answer
27 views

Revert Assert best option

I have a contract(A) function with the standard onlyOwner access. If I call directly from the deployed account the function works fine. But when I import this contract(A) into another contract(B) and ...
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0answers
29 views

How to pass the whole array from one contract to another when working with different solidity files?

For example, I am taking one function function transferAddresses() in my contract contract one{} from where I am taking number of addresses in array. Now I want to transfer the whole data of the array ...
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20 views

Contract deployed address

Is there a way to save the deployed contract address into a variable. Something related to a constructor that save the deployed address into the variable?
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1answer
91 views

Type contract is not implicitly convertible to expected type address

what is the wrong with this function i can't get the address of LenderRegistration contract mapping (address=>address) lendersToContracts; function lenderRegister(uint256 ...
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1answer
25 views

How to map one to many

I am working on rent agreement and I have a situation here One landlord can have multiple properties every property have different details (property details, values) now I want to link property ...
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2answers
91 views

Convert contract to payable address

Not sure how to successfully convert a contract to a payable address.. ERC721 public nonFungibleContract; function withdrawBalance() external { address payable nftAddress = address(...
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1answer
19 views

Unable to resolve TypeError

I'm looking to ensure that an address is not the 0 address and with the update to 0.5.0 I am running into a TypeError Operator != not compatible with types contract GeneScienceInterface and address ...
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1answer
28 views

Solidity : Error when pushing an address into a dynamic address type array

I'm trying to insert an address into an address type dynamic array. It works well when I do the operation inside a function. There are no errors and the elements are properly pushed into the array. ...
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1answer
17 views

Problem with array of adresses

I have following code of my smart contract, it has simple problem: browser/Referrals.sol:100:35: TypeError: Type function (uint256) pure returns (address[] memory) is not implicitly convertible ...
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2answers
38 views

Find the address of the wallet know almost all the letters

I want to find ethereum address and I have almost all the letters. The beginning of the wallet: 0xb6b2ceb624a6b667e67af1893b16706baec21 But how can I find remaining letters?
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1answer
54 views

Changing “proxywallet” in “local.config” in ethOS, but I receive mining reward in previous address

I've changed my proxywallet from proxywallet 0xB4... to proxywallet 0x5B... in the local.config file. However, I received mining reward again in previous address: 0xB4... . Do I need to restart the ...
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0answers
54 views

Recover public key from transaction signature

I have this transaction: {"blockHash":"0x163ad564b32bf17db9262391c2c9a5f191e4fd0b098ae5ce9d2e3 e7dcde4bd70","blockNumber":"0x2","from":"0x55d40a83b8445c004df5964ce4a0e261b599c01a","gas":" ...
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1answer
12 views

How do I get product/parcelID from particular Assigned address using struct and mapping?

struct Sellers{ address sellerAddress; uint parcelId; uint parcelPrice; } In this struct I've entered multiple parcel Ids to sellerAddress and I've retreived them using _sellerAddress. ...
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28 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 ...
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0answers
17 views

How to set an address where the reward will go in `ethOS`?

How to set an address where the reward will go in ethOS in a miner rig ?
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0answers
28 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 ?
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1answer
178 views

Solidity 0.5.x - make address array payable

I'm trying to write a contract that uses an address[] array which should contain payable addresses. But apparently creating a payable address array doesn't work in solidity 0.5.x. All I'm trying to ...
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1answer
552 views

TypeError: Data location must be “memory” for return parameter public view returns (address[16]){

I know that is question has been answered in one form. However, I could not find an answer for my specific case. Here is my code: pragma solidity ^0.5.0; contract Adoption { address[16] adopters; ...
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1answer
97 views

How to view ENS name from transaction?

This is ethereum address. On which there are a bunch of registered ENS names How can we view the actual ENS names which were registered/won in auctions from this address?
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1answer
29 views

Does a storage array have a unique address on the block-chain?

The question in the title is a little vague, so I will try to explain here. Suppose I have a contract with a storage array: pragma solidity 0.4.24; contract MyContract { uint256[10] public ...
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1answer
31 views

Watch an Ethereum address for incoming payments

I want to watch a set of Ethereum contracts and be notified (preferably by email) when a contact receives a payment to it. I prefer me not to write my own software for this and not to install it on ...
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0answers
99 views

Quorum transaction not mined and no address

I am running a private Quorum chain consisting of 3 nodes with raft consensus. When I deploy a contract to the chain via web3 I get returned a hash and can then look up the transaction with the local ...
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1answer
45 views

How does Transactions work in Ethereum Virtual Machine?

While reading the transactions sections of EVM documentation many questions raised in my head: If the target account is not set (the transaction does not have a recipient or the recipient is set ...
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5answers
144 views

Can I easily generate a public address which has no private key?

I might be wrong in some of the facts that I state here, so please correct me if necessary. My understanding: Private key - 256 bits Public key - 256 bits Public address - the last 160 bits of a ...
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1answer
116 views

Recently upgraded Solc and Web3. Transactions with zero addresses now reverting with “invalid address” message?

I recently upgraded Web3JS and Solc. Now every time I pass a zero address to a Solidity contact method the transaction reverts with an "invalid address" message. This message appears to be coming ...
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2answers
1k views

What's the difference between 'address' and 'address payable'?

I saw a Solidity smart contract where some variables were declared with the type address and some were declared with the type address payable. What are the differences between the two? Do they store ...
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2answers
196 views

Unable to return address array in solidity

I have the following code for a simple gambling game. The code works fine except for getPlayers function pragma solidity >=0.4.22 <0.6.0; contract Lottery { address payable public manager; ...
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1answer
96 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 ...
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1answer
49 views

Problem with push

This is my code. When i push address into participants the length is zero. Why? pragma solidity ^0.4.0 contract Registration { address public owner; uint threshold = 2; address [] ...
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1answer
50 views

How to gather all addresses of nodes in a private network?

I am currently learning core-development in go-ethereum. I am a little weak with networking, RPC and connections. I am trying to write a function in my own consensus mechanism that gathers all ...
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1answer
21 views

How do I find the token address as on line 11 in etherscan

How do I get the token address for a token as stated on line 11? Got blocked out of Token.store by S.E.C. action having a U.S. IPS I asked their support and they said the following: If your account ...
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1answer
23 views

Does contract address support uppercase? [duplicate]

Does it support uppercase in web3.js? I write and deploy a test contract on rinkeby 0x7b84de0c31d308b42427d562306526e3eb95c825 if I change it to uppercase it return error Attempting to run ...
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1answer
61 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 ...
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2answers
47 views

How can I build this list of addresses

An investment round ask new investors to put exactly 0.1 ether to enter the round. function invest() public payable { require(msg.value == 0.1 ether); } How can I save every new investor ...
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1answer
36 views

Use DNS TXT records for wallet address resolution?

Are there any Ethereum wallet projects using DNS TXT records to resolve wallet addresses? Setting a TXT record would allow users to have a human readable wallet "address", eg $ dig example.com TXT ...
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1answer
71 views

How to generate address from xpub in JS?

How to generate address from xpub in JS? Should i use BIP39 or 44? If yes, how exactly?
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2answers
179 views

Trouble connecting to web3 1.0 through web browser using Infura.io

I am trying to connect to web3 1.0 through a web browser, I dont see much documentation for 1.0 though. This script says im connected but I think its the previous version as anytime I try and run a 1....
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1answer
63 views

Query a block explorer to return the balance of a specific type of token in an ethereum address? [duplicate]

Is there a block explorer where one can query an address and it outputs the balance of a specific type of token? Is there an example of how this can be done?
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1answer
31 views

Provide security wallet

I have a service where users can buy my product. Besides paying by card, I want to be able to allow users to pay in ETH. I think that it will correctly generate addresses for each user so that it is ...
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1answer
149 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 ...
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2answers
243 views

How is it possible for 0x0000000000000000000000000000000000000000 to send out ERC-20 tokens?

Isn't 0x0000000000000000000000000000000000000000 a burn address where no one has private key? If that is the case, how can this address send tokens to other addresses? If you look at Etherscan's ERC-...