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Questions tagged [ethereum-classic]

Ethereum Classic is the chain where the DAO rescue hardfork did not occur. This tag is for questions dealing with the differences between the chains, usage of multiple chains, as well as cross-chain interaction.

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2
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1answer
19 views

ETC - Negative Balance

So playing around with ETC and wondering how in the world this address doesn't have a negative balance? https://gastracker.io/addr/0x6f1f8a70e2257354e81c306f130f7976dead8e8b First transactions are ...
0
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1answer
68 views

How to call a payble function in embark? When I am trying it is showing gas limit exceeds

when I am trying to call payble function in embark it is showing gas limit exceeds. Please tell me where I am wrong? ///////////////// Index.js: $('#buy button').click(function() { ...
0
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1answer
18 views

How do I create an attribute-based access control in my smart contract to control user access and permissions?

For my Master's thesis, I am trying to create a decentralized file storage system using ethereum, solidity and ipfs. I want to code the smart contract with attribute-based access control but do not ...
0
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1answer
35 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
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1answer
135 views

Why stateRoot, transactionsRoot and receiptsRoot not included in the blockheader of any etherscan ?

My question may be stupid. I'm trying to understand how ethereum is made and in all articles I read that a block header include a list of things and the stateRoot, the transactionsRoot and the ...
0
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1answer
99 views

Is there any version of ethereumjs-testrpc for ethereum classic? How to launch geth --rpc in geth classic version on linux?

I was wondering if there is any version of that local test version but for ethereum classic. Another question is, in order to use web3.py and geth in my VPS ubuntu terminal...how can I open a geth --...
0
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1answer
33 views

About send Ethereum Classic (ETC) coin

Need guideline for send ETC coin using web3js,As per documented flow I understand we can access all methods same as ETH but I have query regarding set provider for ETC after that I can connect to ETC ...
0
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1answer
123 views

Transfer erc20 tokens from a wallet to a new contract's total supply

I have an ERC20 token deployed on mainnet and I would like to transfer tokens from my wallet to a new contract and use it as the total supply of the new contract. Any help would be highly appreciated.
1
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1answer
138 views

Multisig deployment created ETC standard wallet - how to access?

I made a multisig wallet on the ETH chain in December or so last year. It has an ETC parallel to it which I cannot access. As you know multisig wallets don't have private keys. And I can't use the ...
5
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2answers
865 views

Is there any GPU that has 100+ Mh/s?

After I browsed http://www.mininghwcomparison.com, I found some GPU that had a 100+ hashrate, to 250Mh/s. I checked many other sites, and I didn't see any GPU that goes over 50MH/s, so is this site ...
0
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1answer
355 views

Port number for connecting web3 to mainnet using Geth

I am trying to connect web3j object to the mainnet using geth. I can't use infura because i am working with replay transaction observable function which doesn't work with infura. To connect with the ...
0
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1answer
77 views

Is there any working provider for Ethereum Classic APIs?

Provider used for Ethereum is Infura, but there is no any provider for Ethereum Classic. Previously tested Ethercluster endpoint to access APIs for Ethereum Classic, not able to connect with Kotti ...
1
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2answers
38 views

How to convert string to bytes256 or arbitrary bytes?

I already know how to convert bytes32ToString and stringToBytes32: function bytes32ToString(bytes32 x) public pure returns (string memory) { bytes memory ...
0
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1answer
189 views

Changing end date to smart contract?

Newbie question. Can someone walk me through the steps I have to take to extend the date to my smart contract from May 2, 2018 to August 2, 2018? Like to try without asking my programmers for help....
0
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1answer
120 views

Testing Smart Contract

We all know a smart contract is a normal piece of code which can have intended and unintended bugs. DAO attack is such an example where a bug has led to a heavy loss. Suppose I want to check what all ...
2
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1answer
734 views

How to start ethereum classic (ETC) testnet/morden node?

I want to be able to start a node that will sync to the ETC testnet (is that morden?) network and allow me to query over web3 (or other) interface. I tried all tutorials and documentations, I tried ...
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4answers
672 views

how much does using ethereum services cost

Lets say im creating my own cryptocurrency and my own blockchain on ethereum, what would be the basic costs for setting all this up if i am developing on Ethereum
0
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1answer
268 views

how to import UTC-JSON file through web3-eth methods

hey I am working on ethereum wallet. in this i want to import my account through UTC json file, but i didn't find any solution for this in web3-eth command someone can please help to find out the ...
2
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1answer
176 views

call graphs for solidity smart contracts

Do we have some open source tools where we can get call graphs for solidity smart contracts execution ? For ex: Suppose Function A in contract C calls some other function B so the graph should contain ...
0
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2answers
221 views

Reading parameters from Smart Contract

I have a Crowdsale smart contract taken from the example provided by Ethereum on their website. The Crowdsale contract contains the addresses of the people who participated in the Crowdsale. Is there ...
1
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1answer
32 views

What is the best (cheapest) method to store RGB/RGBA pixel data in a smart contract (on ethereum-classic blockchain) with python?

I would to implement a method to store pixel (RGB/RGBA) in a Smart contract (on ethereum-classic blockchain) from python and with the cheapest method ( when storing and updating pixel data) I try to ...
0
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0answers
13 views

How to get transactions without using address in Ethereum Classic

I have referred this resource for APIs, api resource , which has methods used to get transactions using either address hash or transaction hash required param. Is there any other way to get ...
0
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0answers
8 views

What are the steps I have to perform to make a transaction using for ETC using Kotti Testnet geth JSON RPC APIs?

I've founded API resource from Resource, and from that resource I've got This reference, which redirected me to all those JSON RPC methods and localhost geth port and its setup. What should I have ...
1
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2answers
177 views

Is there any testnet faucet for ETC Ethereum Classic Coin?

Not able to get testing ETC from available faucet https://etcfaucet.info/, is there any other faucet or way to get ETC for tesing?
2
votes
1answer
1k views

ETH vs ETC on Dwarfpool and Poloniex?

Noob miner here, Does anyone mining on Dwarfpool know if they have updated to the forked code (ETH), or are we still mining Ethereum classic (ETC)? I currently use Poloniex as my intermediary wallet ...
0
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1answer
331 views

How to add account in rinkeby test network?

I have a problem on creating a wallet account. I have downloaded mist. I have downloaded ethereum wallet. I have no idea on anything of this. I am new to this. I have choosen Develop->Network->...
4
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1answer
39 views

Where’s the equivalent of Yellow paper for Ethereum classic?

Ethereum classic performed changes never implemented on Ethereum like on mining. I do expect them to have their own paper for detailing this. But it seems it’s not called the yellow paper… Even on ...
3
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1answer
90 views

About Ethereum testnet 61 (Ethereum Classic)

I know that Ethereum was forked 2 chains due to DAO hacking. so Ethereum Classic was borned at that time but 2 chains are equal technically. Network number is different between Ethereum(number is 1) ...
0
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1answer
31 views

Does ETC have wallet which can use multi-signature wallet contract like Ethereum Wallet For ETH

Does ETC have wallet which can use multi signature wallet contract like Ethereum Wallet For ETH?
0
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1answer
61 views

solidity string variable compresion

I am try to compare a string variable in solidity code, mainly i have to check if the string is empty or not. How can it be achieved and also how much long/large of a string i can save in a string ...
0
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0answers
22 views

Why are most Dapps created as a WebApp rather than native apps?

I am newbie in the Ethereum Dapp Development. I am researching on different options to dev a Dapp and noticed most Dapps are developed in WebApp. Why? Thanks!
0
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1answer
208 views

Converting int to default block parameter

I am using Infura and web3j to query the Ethereum blockchain. My aim is to get information about certain blocks so i'm using the function web3.eth.getBlockByNumber, however it gives me incompatible ...
1
vote
1answer
91 views

how does a smart pool identifies the valid block in ethereum

I have been reading this paper https://eprint.iacr.org/2017/019.pdf. To my understanding, the miners send the shares in batches and later the smart pool verifies the shares with sampling with ...
1
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0answers
53 views

Solidity: TypeError: Member “unbond” not unique after argument-dependent lookup in contract super EthGatedMarket

I'm getting this error: TypeError: Member "unbond" not unique after argument-dependent lookup in contract super EthGatedMarket. super.unbond(msg.sender, gatewaySpecifier, quantity); ^----------...
12
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5answers
17k views

send ethers from one contract to another

I am wondering how can I have ethers in my contract. I have 2 contracts associated with different accounts. I want to send ethers from one contract to another but how do I have ethers in my contract ...
1
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0answers
24 views

Is it possible to deploy Dapp on Ethereum classic network and be listed in mist?

So as a small bisness entety can not pay 100k USD for app deployment, one wonders on is it possible to deploy Dapp not in the test net but in a more real ETC one?
0
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0answers
116 views

Web3py AttributeError: 'HTTPProvider' object has no attribute 'manager'

I am trying to use web3 in a Django based web application in a task which is run using celery and kafka. However while trying to use web3.eth module, I am getting the following error : /...
2
votes
1answer
39 views

How is the Ethereum Classic gas limit enforced?

According the the Ethereum Classic Technical Reference: For security reasons, the amount of gas that can be purchased and used by blocks is limited. How is it limited? Do miners choose to limit it,...
0
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1answer
434 views

Web3: web3.utils is undefined

I am kinda new to Ethereum and Web3 so I am trying to implement the Ethereum: Building Blockchain Decentralized Apps (DApps) tutorial. I have already installed web3 and web3-utils. npm view web3 ...
1
vote
1answer
71 views

Get the amount of Smart Contracts hosted on the ETC blockchain

I have a couple of questions: How can I determine the amount of Smart Contracts that are hosted on the ETC blockchain? Of these smart contracts, how many of them have been verified? I guess geth is ...
1
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0answers
23 views

Alternative to decentralize exchange on Ethereum?

Because of the block time lag, The decentralize exchanges built on Ethereum suffers from a Front running problem. Gnosis works on Dutch exchange concept where orders are executed in Bulk eliminating ...
3
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3answers
1k views

Is there a list of Ethereum Classic block explorers?

Most Ethereum block explorers are only for Ethereum, but not Classic. Is there a list of Ethereum Classic explorers?
0
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0answers
42 views

How to calculate the value of mixhash in block header?

As of my knowledge how POW works is When mining the miner will have the hash1 which is block hash and he need to fine the hash2 which is hash of nonce (a random number). So that the root hash of ...
6
votes
2answers
1k views

Does ETH and ETC uses the same network ID?

Can someone tell me what happen after the hardfork (due to DAO attack)? There are 2 ethereum cryptos after the fork, so there should be 2 different network. Are they using the same network ID? How do ...
0
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1answer
22 views

Deleting a value from address to address mapping in solidity?

mapping(address => address) public userpatient; I want to delete a the key value pair from above map,when the patient is discharged.How can i do it.I saw similar question here but it mentioned '...
0
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0answers
57 views

How to read data from external files in Quorum Blockchain?

I have a use case where we have implemented Quorum Blockchain using AWS. The smart contract was written in Solidity. Initially we randomized the valued by coding in Smart Contract however we now want ...
0
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0answers
27 views

How to search all blocks in ethereum blockchain of a particular public key?

How to search all blocks in ethereum blockchain of a particular public key? And explore all data inside them.
0
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2answers
300 views

how to call deployed smartcontract with sendRawTransaction [duplicate]

with this code i want to call my token smartcontract's transfer function. as per my knowledge i have to add this ".transfer(address,amount)" to data field. am i correct? also i am using web3 0.20. in ...
0
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1answer
1k views

create ether wallet using nodejs

I have implemented the code which is creating new wallet but I am not able to get the private key of that wallet. Can anyone tell me like what is the proper way in which I can create new wallet which ...
1
vote
1answer
784 views

About Abi Encoder V2

I came across the following code and found the term "pragma experimental ABIEncoderV2". Can anybody be specific in telling what this actually means? //pragma solidity ^0.5.2; pragma experimental ...