Linked Questions

6 votes
2 answers
6k views

How can I estimate price of data storage? [duplicate]

I'd like to make estimations of the cost of an application, and one of the things I need is the price to store n kB of data on a contract. In ether and in USD. Where could I find rates or prices of ...
Teleporting Goat's user avatar
1 vote
1 answer
2k views

Is there any price for storing data in contracts? [duplicate]

I want to create contract, which will be able to store data like array of: struct Funder { address addr_first; address addr_second; } How can I calculate gas fee for transactions ...
sp41mer's user avatar
  • 92
5 votes
0 answers
1k views

What happens is somebody deploys illegal content to the public ETH blockchain? [duplicate]

Once a smart contract is out there on the blockchain, it can't be removed, it can only self-destruct. A smart contract can store around 1.49 GB of data (source: Is there a (theoretical) limit for ...
Adam Szabo's user avatar
1 vote
1 answer
403 views

How to calculate the costs of storing data in a contract? [duplicate]

Lets say, I want to create a smart contract that can receive a record of data per hours, e.g. hourly rates of ETH/EUR. These data would be stored in an array. What would each transaction cost me and ...
delete's user avatar
  • 327
3 votes
0 answers
122 views

Data storage : cost of contract size? [duplicate]

Ok so I'm trying to figure out how smart contracts work, excuse me if I'm missing something obvious. Smart contracts are a type of account, and are thus stored on the blockchain state. My question ...
gamarin's user avatar
  • 31
1 vote
1 answer
110 views

Can Ethereum handle storage of strings in volume? [duplicate]

I have someone who wants to put strings onto a private blockchain. He thinks it will be safe for his data. So the idea is to store names and addresses etc on the blockchain (private). I did some ...
Trevor Lee Oakley's user avatar
29 votes
3 answers
8k views

Can a contract listen to events of another contract?

I read that to listen to events you need to use web3.js. Are there other ways of doing it? Can a contract even somehow listen to events of another contract? Thanks!
uberlaufer's user avatar
11 votes
3 answers
32k views

Storing document/file in blockchain [duplicate]

I am planning to do a POC on blockchain for uploading and verifying documents. I was wondering if I can store a complete document in blockchain. After some research on net most of the example, I found ...
MadhukarChaubey's user avatar
8 votes
1 answer
9k views

Storing string value in Solidity

Are there any restrictions on the length of the value that can be stored as type string in Solidity? I am trying to store a string value in the smart contract member field. The length comes to around ...
sravtej's user avatar
  • 93
5 votes
1 answer
1k views

Variable storage or persistency

Variables used in contracts do they get stored in Blockchain? If so does it require ether? If not how is persistent where is it stored?
Mighty Proton's user avatar
2 votes
1 answer
2k views

Is the entire ethereum blockchain stored on my machine?

Blockchain n00b here with a background in software development using traditional data storage (SQL) and app runtimes. I realize that this question may have already been answered, but I am having ...
Matt Cashatt's user avatar
3 votes
1 answer
2k views

Price of storing a hash SHA3 in Ethereum and Bitcoin

I'm involved in a Proof of Existence project and I need to know if it is convenient to create a private blockchain or we can use Bitcoin or Ethereum. I would like to know the price of storing a SHA3 ...
Paul Exchange's user avatar
5 votes
2 answers
807 views

Ethereum metadata limit

Couple of days ago Vitalik Buterin tweeted that Ethereum has no metadata limit. Is that true? Two major questions that bothers me, as a developer: I can store any amount of data inside contacts? ...
yanik's user avatar
  • 473
4 votes
1 answer
2k views

Storing data in the blockchain inside a transaction

This question is related to this one and this one. I'm trying to store data in the blockchain inside the transaction data field: The second question offers a solution using a contract but is it ...
Sebi's user avatar
  • 5,284
8 votes
1 answer
2k views

Is Ethereum suitable for a storage application?

I'm interested to make an app to store some data and I'd rather think that the blockchain might not be the only or the right solution for me. I'd like the users to contribute data and to make that ...
user1861388's user avatar

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