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2
votes
1answer
551 views

What is the set number of Ether in existence during POW and then POS? [duplicate]

How many Ether exist during POW and then POS? Is it unlimited inflation?
6
votes
4answers
2k views

Are there any dice / casino gambling games / smart contracts for ethereum yet?

Are there any dice / casino gambling games / smart contracts for ethereum yet? Where can I get a list of them?
46
votes
5answers
20k views

What is the cost to store 1KB, 10KB, 100KB worth of data into the ethereum blockchain?

Whatever is stored in the blockchain is immutable which means I can fetch this data back in the future. As of today (2016-feb), How does one store a 1kb, 10kb, or 100kb or arbitary data/text in the ...
41
votes
4answers
16k views

What is the zero, empty or null value of a struct?

If I have a mapping of string => custom defined struct, how do I check if a value is defined in the mapping? The docs state that "every possible key exists and is mapped to a value whose byte-...
3
votes
1answer
1k views

Why are coins at risk when honestly staking?

It has been repeatedly written that staking nodes should buy DDoS protection or be at risk of losing their coins. Can someone explain why an honest staker is at risk of losing his coins in case it ...
8
votes
1answer
1k views

sendRawTransaction results in queued TXs

I attempted to send raw TXs via eth.sendRawTransaction API but get stuck. I'm using EthereumJS to generate and sign TXs, and indeed, I can submit TXs through eth.sendRawTransactin, but the TXs always ...
3
votes
2answers
251 views

Etherbase ID changed after depositing funds to Mist wallet?

So it appears that my Mist wallet hadn't fully sync'd to a node, yet it produced a Etherbase ID for me to use.. I dumped the address into Kraken for a withdrawal, and realized after sending things ...
8
votes
1answer
2k views

Documentation On Multisig Wallet in Mist?

Is there documentation related to the built-in multisig wallet contract in the Mist Wallet? I see there are many additional functions in this contract like changing / adding / removing owners etc. ...
7
votes
2answers
1k views

Where can I find job listings for companies that use ethereum and are hiring developers that they'll need to train?

Ethereum is very interesting. I see its potential, but right now I cannot figure out what useful app/service I could implement on my own with my current very limited skills. It almost reminds me of ...
4
votes
1answer
129 views

How Will Ethereum Differ From The Linux Foundation Blockchain?

What are some crucial advantages/disadvantages to both, and what factors will affect user adoption? Finally, in what ways will they one day work together?
3
votes
1answer
307 views

Why should I be interested in Ethereum? [closed]

Is there a list of features and benefits to using Ethereum?
4
votes
1answer
361 views

Will Bitcoin and Ethereum be linked/bridged?

Will Bitcoin be linked to Ethereum in the future? If so - how will it link, and when is this planned to happen?
4
votes
2answers
842 views

What are the ways I can contribute to Ethereum?

I'd like to know more about how to contribute, both on a technical and non technical perspective
3
votes
1answer
328 views

Are there any decentralized local exchanges for euro/usd to ether?

Is it possible to have something like a DApp to find the closest Ether owner to purchase or sell ether? Something that can be used as a decentralized market.
1
vote
0answers
76 views

Importing a ethereum brain wallet into the Mist wallet [duplicate]

After creating a ethereum brain wallet, how can you import this into the MIST wallet?
1
vote
1answer
710 views

Get Ethereum to run on a Raspberry Pi Zero? [closed]

How would one get Ethereum to run on a raspberry pi zero?
-2
votes
1answer
283 views

Which corporate companies have funded Ethereum? [closed]

Ethereum raised 18 million via crowdfunding, but has any other corporations put funding into Ethereum yet?
6
votes
0answers
143 views

Does everyone have to run all the contracts? [duplicate]

Does everyone have to run all the contracts or can nodes pick and choose what contracts they want to run? I'm still trying to wrap my head around how many nodes need to run a contract before I can ...
2
votes
0answers
67 views

How is Ethereum's Proof-of-Stake different from Peercoin and NXT's Proof of Stake? [duplicate]

Currently peercoin and nxt are one of the few POS coins out there. How is Ethereum's POS different from these 2 and others if they are available?
13
votes
4answers
10k views

Are there any android wallets for Ethereum? [closed]

What Ethereum wallets are available for Android? Or which ones are still being developed?
-2
votes
1answer
4k views

What is the fastest way to get a Ethereum wallet client up and running? [duplicate]

I usually run my coin wallets in a ubuntu virtual box for the fear of malware or trojans embedded into wallet clients. Coming from a vanilla ubuntu 14 install, what is the fastest way to get an ...
5
votes
1answer
378 views

How can we conserve disk space or compress the blockchain?

The blockchain is eating into my macs disk space. Will there be a way in the future to compress it or redirect to an external hard drive?
24
votes
3answers
7k views

Which database(s) do the ethereum clients use and why?

Ethereum clients (such as geth, eth, pyethapp, ethereumj, and ethereumH) download the Ethereum blockchain from their peers and then store a copy of it locally, presumably indexed within some sort of ...
13
votes
2answers
766 views

What is the way to make Ethereum available to users for free?

As the web is mostly free today (I mean the old web, the one < 3), most people won't agree in beeing asked for fuel to run sites, apps, even if the gain in terms of safety and trust are so much ...
47
votes
1answer
47k views

Which TCP and UDP ports are required to run an Ethereum client?

The geth CLI options suggest that per default the client listens on TCP port 30303. This page, additionally suggests that UDP port 30301 is used for node discovery. Is this all that is required or ...
4
votes
1answer
832 views

Who are the main developers of Ethereum?

Bitcoin has a handful of core developers like Gavin, Mike Hern, and etc that are the gatekeepers to implementing core features depending on community feedback. Who are the core devs in Ethereum and ...
4
votes
3answers
606 views

Can a smart contract code be used to generate a bitcoin public/private key pair address?

Seeing that a smart contract is just code. How would it be possible to make a smart contract generate a Bitcoin public/private key pair and send it to a user without anyone knowing the pair.
6
votes
1answer
618 views

Can you do a POST to an external webform using a Ethereum smart contract?

Can you do POST or submit a form from an external site using a smart contract? And how can this be done? Are there any examples of live code out there?
6
votes
3answers
1k views

Can you copy or fork someone else's smart contract? Is it open source code?

Is it possible to just copy someone else's smart contract? Say if someone has a profitable smart contract, what stops someone from just copying it to get a piece of the profit pie?
11
votes
2answers
513 views

Can I send gas to another user?

Gas is purchased using Ether, does that mean I can send gas as a separate coin?
5
votes
2answers
418 views

Which competing technologies are similar to Ethereum?

Ethereum is widely known for its smart contract system, but which other competing technologies are also out there that does something similar. Just like in the early days of Bitcoin, many clone coins ...
16
votes
1answer
6k views

How much does it cost to use a contract?

Still new to ethereum and would like to know the price for a contract.
1
vote
0answers
2k views

As of Feb 2016, how big is the ethereum blockchain size and its monthly growth rate? [duplicate]

As of Feb 2016, how big is the ethereum blockchain size and its monthly growth rate? Does the blockchain implement anything with pruning to reduce its size in the near future?
3
votes
1answer
325 views

Example of embedding arbitrary data / text into a contract to be sent to another account?

Since users can create smart contracts, can't someone just embed plain text into the smart contract and then have that sent to another user in effect making it a messaging system? and how much would ...
4
votes
3answers
3k views

Which trustworthy sites can I generate a brain wallet for ethereum?

I'm looking to generate a brain wallet for ethereum. Which sites are trustworthy to do this without my coins being stolen?
4
votes
1answer
409 views

Live demo of parsing data from external API's like twitter into an Ethereum smart contract

I'm looking to make a simple ethereum smart contract to just monitor a twitter weather feed for the word "sunny". And if its sunny, it would send coins to some account I specify. Are there any live ...
21
votes
2answers
2k views

What are best practices for serving a DApp over HTTPS, connecting to an Ethereum node using JSON RPC / web3.js, which by default uses HTTP?

Summary: we're serving an Ethereum DApp from a webserver through HTTPS. The DApp connects to an Ethereum node through JSON RPC using web3.js, which uses HTTP (not HTTPS). How to deal with this in a ...
2
votes
1answer
753 views

How to use contracts deployed by embark on the server side of a meteor app?

I have created my example using embark meteor_demo and then changed my configuration on embark.yml to output the contract on the server folder instead of the client. From that point i started getting ...
9
votes
1answer
299 views

What is the utilisation level on the Ethereum blockchain? [duplicate]

How many transactions are currently executed on the Ethereum blockchain and how does this compare to other blockchains?
3
votes
1answer
265 views

Is it possible to launch the C++ eth client without unlocking the accounts?

Each time I run eth it requests my master password. I don't feel comforatble with permanently running a node with unlocked accounts. Is it possible to launch the C++ eth (or alethzero) client without ...
4
votes
1answer
255 views

Is it possible to check which RPC APIs are available?

Is it possible for a decentralized application to get details about the offered JSON-RPC APIs from the local ethereum node? I want to check the following specs in the following order using web3.js: ...
20
votes
4answers
11k views

Does Web3.js have the functionality to create new accounts and unlock an account for a period of time for a series of transactions?

I want to create new accounts through my Dapp web interface and unlock a specific account so that transactions can be processed. I didn't see it in the web3.js documentation so wonder if that's on the ...
7
votes
2answers
1k views

web3.sha3 dealing with hex in both geth and web3.js

in both geth and web3.js, when we call > web3.sha3("0x536f6d6520415343494920737472696e6720746f20626520686173686564") we get: requirement of using web3.fromAscii before sha3 is deprecated new ...
11
votes
2answers
650 views

I bought ether in the presale. Is there a time limit to claim that ether?

There is no mention in the documentation about whether I have to claim ether before a particular date. Is there a time-limit on claiming ether? I've also heard that the mining algorithm will change at ...
143
votes
2answers
27k views

What is the difference between a transaction and a call?

What is the difference between a transaction and a call? In some interfaces, I can interact with contracts via calls or via transactions. What is the difference between the two, and can contracts also ...
31
votes
2answers
4k views

Do contracts also have a nonce?

Do contracts also have a nonce and if so how is it calculated? Usual accounts have a nonce that is increased with every transaction. However, contracts can't make transactions, they can only make ...
5
votes
1answer
388 views

Do Ethereum and Bitshares have similar concepts or technology?

In the Bitshares official website they're explaining the functionality of the tool and in general look like Ethereum. What makes Ethereum different of Bitshares?
76
votes
5answers
23k views

How is the address of an Ethereum contract computed?

How is the address of an Ethereum contract computed? What use cases are there for knowing a contract's address in advance?
1
vote
0answers
139 views

How to sign anything with my ethereum private key and verify with public key? [duplicate]

How can I use the private key of my eth.accounts[0] to sign a file from outside Ethereum, so people can verify that the file belongs to that account with the public key?
13
votes
2answers
1k views

If someone gets my geth keystore files, can they spend my ETH without knowing my password(s)?

I always assumed so, since geth requires a new password for every account, but just want to be sure.

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