Questions tagged [blockchains]

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1answer
28 views

How to sign this EOS transaction provided with below code and response?

This below code is working fine in testnet. I want to do transaction, signing and broadcasting individually. I generated the raw transaction, but I don't understand how to sign it. I have provided the ...
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1answer
34 views

how to create a unique user name using public or private key in nodejs?

Like BTC, ETH etc has address, do EOS has address or username etc, I am using below code to generate the public and private key, we do transaction in bitcoin,ethereum etc with a unique address sample ...
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0answers
18 views

How different is the chain start process (EOS-Main/ TELOS, etc.) from the boot-sequence in the tutorial at developers.eos.io

how would a normal new chain start look like? (or in which way is it different from the BIOS boot sequence descripted at developers.eos.io) you have a genesis producer which while install all ...
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0answers
8 views

Querying an instance of cleos synced to the mainnet online

Is there a website that run a nodeos sync to the mainnet blockchain and allow users to run simple cleos command like cleos get account <name>
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2answers
72 views

How to initialize the blockchain correctly?

I am trying to initialize the blockchain using nodeos --genesis-json /home/nodeos/genesis-test.json --config-dir /home/nodeos/.local/share/eosio/nodeos/config --delete-all-blocks but I am getting an ...
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0answers
15 views

Hide information in the blockchain

Lets say I want to create a player vs player game with a battlefield and moving armies, the movement and data about the armies and where is it going is put on the blockchain. My question is how to ...
2
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1answer
49 views

How two EOS nodes on two diffrent instances of aws can communicate with each other through an EOS private chain?

I have setup node on each of two aws instance i.e two nodes on diffrent aws instance , thus created a private blockchain on both of the instances . Now how can i make them communicate with each other ...
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0answers
77 views

EOS Multi-Host(multiple instances on aws) Multi-Node Private Blockchain Setup

How can i setup multi-node eos private blockchain on multiple aws instances being the nodes(voters,delegates) of the private blockchain.I followed the https://developers.eos.io/eosio-nodeos/docs/bios-...
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0answers
37 views

EOS MainNet local blockchain

I'm trying to run a node, connected to mainnet with ability to search the whole blockchain. So that my node is connected to mainnet blockchain and gets all the new blocks, saving them to local disk. ...
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1answer
19 views

Is there an easy way to track # of operations on EOS in a single day?

I need to know the daily operations on the EOS blockchain. I understand that each transaction can have several operations. If I set up a node on my computer how would I start counting operations? ...
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1answer
54 views

How to add the formula of ram calculate price for eos in our project?

Actually I am building an application and I would like to add the ram calculation for eos there. if anyone wants to calculate the ram for the accounts creation, he can use our website.thanks.
2
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1answer
48 views

What does it mean to have multiple blockchains on EOS

In the whitepaper v2, I saw a section for inter-blockchain communication. Does this mean communicating with blockchains based on other technologies like Ethereum? If not does that mean that each DApp ...
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1answer
136 views

eosio 1.5.1 - keosd & produces: Application does have a valid signature

Following the eosio website I install eosio with brew. https://developers.eos.io/eosio-home/docs/getting-the-software The first step after the install is to run keosd &. I get the following ...
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1answer
233 views

Where can one find the total size of the eos blockchain?

Is there a site to see the total size of the eos blockchain like how one can see that the bitcoin blockchain takes 250GB on blockchain.info
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1answer
50 views

How is the the crash of a BP handled?

I am wondering if a BP crashes, how do the remaining 20 BPs know this? If they do not know, all block not irreversible so we can be hack? Please give me some details for this. Thanks!
2
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1answer
44 views

What is Worbli that is a fork of EOS?

What exactly is Worbli blockchain? Is it a fork of EOS and what problem does it solve that EOS cannot? Why didn't they just build on top of EOS?
1
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1answer
40 views

I read that you can use the cleos command without having nodeos synced. How does one do this?

I read somewhere you can use the command line cleos without having to sync or even turn on nodeos. Which means avoiding the need to download 60+gb of blockchain data. What are some of the ...
4
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1answer
83 views

Which BP's offer snapshots for v1.4? --mongodb-wipe?

Which BP's or websites offer snapshots for v1.4 ? Is --mongodb-wipe still required for replaying?
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2answers
51 views

Onboarding new eos users to a note taking dapp

I have a note taking dapp on the Ardor blockchain and say I wanted to migrate it to EOS. Currently these notes are just palin text messages stored in the blockchain directly (ardor data cloud). In ...
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1answer
22 views

What Data ownership really is in EOS?

All data of transactions can be view live as EOS is public , suppose i made a transaction on EOS block-chain this transaction belong to me but still people can see it. Here is my Question how this ...
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2answers
764 views

How big is the EOS blockchain? Does it grow much faster compared to others due to the short blocktimes?

How big is the EOS blockchain in disk size? Since its faster block times, doesn't the size of the blockchain grow much faster?
1
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1answer
125 views

Hello contract: How do i execute “hi” action when notified by eosio.token contract of an EOS transfer?

I want to extend the Hello contract (as an exercise) How do i execute "hi" action when notified by eosio.token contract of an EOS transfer ? I understood i have to extend EOSIO_ABI macro to handle ...
2
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1answer
57 views

I Need Help Setting Up a Back-End Infrastructure for my Future DApp

I'm going through the process of designing a desktop DApp. I'm going to use GraphQL API's to connect the EOS blockchain to a Node.js server that'll use MongoDB with Electron.js and React.js on the ...
4
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1answer
479 views

How cpu, ram works for eos and are transactions free?

I'm a little bit fuzzy about what's going on for eos. All say transactions are free, but what you do is you make a stake. My questions are: 1) What is a stake? 2) After making a stake, what cpu and ...
3
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1answer
518 views

How does the EOS account system work together with smart contracts?

It's my first step into eos and Trying to get some ideas. I really do hope you can help me. Question 1) As we all know, we can transfer some coins from one to another account by using account_names. ...
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2answers
684 views

EOS blockchain explorer

Where i can check if my EOS created account is successfully created or not? is there something similar website like etherscan.io for EOS? i spent few hours but could not find anything useful
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0answers
166 views

run a private EOS fork on Raspberry Pi

for development purposes, is it possible to run a private version of EOS on a Raspberry Pi? what are the required steps to fork, build, then run it on a Raspberry Pi?
2
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1answer
545 views

use EOS as private blockchain for a loyalty system

We are working on a loyalty system powered by blockchain. Using blockchain enables us to have basic security at the beginning and scale easily. it makes total sense to us. the loyalty system will ...
2
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2answers
110 views

How to scrape all accounts/public_keys in EOS mainnet?

I am doing a research project at University. Since the accounts and public_keys for EOS change dynamically. Sites like this https://eostracker.io only display 20 accounts per page and it doesn't ...
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1answer
56 views

EOS: In order to save & show other clients a piece of information. Is transaction needed? To whom?

Suppose I want to save and send this information to all the world: "I'm Fu Song, I made Taylor Swift pregnant, and I'm going to marry her on Christmas, 2018, so that I will still be a responsible ...
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1answer
159 views

How To Reset After Unclean Shutdown? Addr in use; no instance of nodeos running

Here's how I'm running nodeos: nodeos -e -p eosio --plugin eosio::chain_api_plugin --plugin eosio::history_api_plugin I already tried deleting the "data" folder in .local/share/eosio/nodeos/ and ...
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1answer
144 views

EOS world state sharding

What is the current plan to shard EOS blockchain state? (Different from transaction parallel processing). As far as I understand currently all block producers need to store everything. When the state ...
2
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1answer
170 views

Can I stake back my bandwidth without cost?

Say I have staked enough eos for 10mb of bandwidth. When I run out of bandwidth, can I unstake and stake back as soon as possible to get 10mb more of bandwidth without any cost?
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1answer
111 views

How RAM is managed between PBs

In EOS smart contract developers are able to utilize the database functionalities. According to official document they are RAM. So I wonder if this is distributed database which included in Blockchain ...
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0answers
230 views

EOS Block Explorer

I have a local EOS testnet running and I am trying to run this block explorer against my EOS local testnet. I launch https://localhost:4200 in a browser and look at the nodeos output terminal. Here ...
3
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1answer
997 views

How can I sync my nodeos with a Mainnet or Testnet?

I can't find in the wiki how do you sync your nodeos with a testnet or mainnet. I need this for a project I'm developing.
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2answers
212 views

Block.One are not starting the EOSIO blockchain, so who will be?

In the latest community announcement, Block.one have sent a reminder that they will not be launching any of the initial EOSIO blockchains, and warning us not to share our private keys with untrusted ...