Questions tagged [ethcore]

Ethcore is a company dedicated to helping you get the most out of open source blockchain technology.

Filter by
Sorted by
Tagged with
1 vote
3 answers
2k views

Type Error : contract " erc20interface " should be marked as abstract

Code : contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address ...
Matt's user avatar
  • 11
1 vote
0 answers
27 views

Does ETH store a block tree (all connecting blocks) or only active chain?

Specifically I am interested in core-geth repository. Does it store a Block Tree (thus on single height it may store multiple blocks), or it stores only single (active) Chain (thus, on single height ...
warchantua's user avatar
1 vote
1 answer
79 views

Finality in Casper: can full node delete everything other than block header and state tree after reaching finality?

In the coming release Casper, I am assuming after Casper reaches finality, the finalized block will never reorg. Is it safe for the full nodes to delete everything (e.g., all transactions) other than ...
Helin Wang's user avatar
1 vote
1 answer
166 views

Ethcore not deploying contract via web3 Javascript API

I have written some Solidity code, with a setter method createId to write a name-value pair to contract storage, and a getter method getPermissions to get the value associated with a particular name. ...
Ajoy Bhatia's user avatar
  • 1,446
1 vote
0 answers
61 views

Ethcore: "The dapp cannot be reached"

On a private dev chain with two Ethcore nodes, I created a dapp as per the instructions at https://github.com/ethcore/parity/wiki/Tutorial-Part-I. Everything was OK and I can see the dapp listed in ...
Ajoy Bhatia's user avatar
  • 1,446
2 votes
1 answer
1k views

How to run JSON rpc with parity server?

I use a VPS where I want to run parity to synchronize the blockchain. I use this command : parity --chain frontier.json --rpcapi="eth,net,web3,personal,web3" --rpc --rpcaddr ipAddressPub --rpcport ...
wxcvbn's user avatar
  • 827
5 votes
2 answers
1k views

What are the roles of ETHDEV, ETHCORE and the Ethereum Foundation?

I am trying to understand the institutional setup of Ethereum. I could identify the following institutions: (1) The Ethereum foundation, (2) ETHDEV and (3) ETHCORE. The foundation (1) is apparently ...
q9f's user avatar
  • 32.9k