7 votes
Accepted

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

1) what is a stake? Staking is the process of locking your tokens for a fixed period of time. On mainnet, at the moment, this period is at least three days. 2) after making a stake, what cpu and ...
  • 5,524
6 votes
Accepted

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

Here's a post outlining a hypothetical example of how the chain will be launched written by the VP of Product at block.one: https://medium.com/@thomas.cox_39839/magic-15-unlocking-the-eosio-...
6 votes

use EOS as private blockchain for a loyalty system

Yes, you can fork EOS for this. Think of EOS as an inherently flexible operating system layer for blockchain based applications. If you look at the chain config.hpp file, you can see some of the ...
  • 3,405
4 votes
Accepted

Can I stake back my bandwidth without cost?

It depends on your understanding of cost. You don't loose an absolute number of tokens. So if you stake 3 token you will receive 3 token back after unstaking. But... What you do pay is some ...
  • 2,104
4 votes
Accepted

What does it mean to have multiple blockchains on EOS

EOS is a specific blockchain implemented using the open source EOSIO software built originally by Block One. EOSIO can be used to create new blockchains with varying degree of changes in many areas -- ...
  • 843
3 votes
Accepted

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

Putting @confused00 's comment and mine together: Question 1: All accounts are unique in one EOS.IO chain (like the mainnet). That is why there are also things like name bidding. This is quite well ...
  • 2,104
3 votes
Accepted

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

You can find the total block size of eos blockchain here: https://eosnode.tools/blocks
  • 56
3 votes
Accepted

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

Each network has a genesis.json file. Start nodeos with that file and with --p2p-peer-address set to 1 or more nodes on that network.
  • 1,985
2 votes
Accepted

How RAM is managed between PBs

From the white paper "Bandwidth and computation have two components, instantaneous usage and long-term usage. A blockchain maintains a log of all Actions and this log is ultimately stored and ...
2 votes
Accepted

Onboarding new eos users to a note taking dapp

This issue has always been a tricky one, I believe steemit stores all the data on the block(which is insane if you consider the EOS ram prices). It is especially annoying for the second point that you ...
  • 208
2 votes

EOS blockchain explorer

I don't know what block explorer is updated in real time, but if you want to check your account, you can just type this in the terminal: curl --request POST \ --url https://api.eosnewyork.io/v1/...
  • 5,524
1 vote

It's possible to make a "Selfish Mining Atack" on EOS Blockchain?

There is no Proof-of-Work (POW) Mining in EOSIO which uses on Delegated Proof of Stake (dPOS) consensus algorithm.
1 vote

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

// create eos key pair. use "eosjs-ecc". ecc.randomKey() .then(privateKey => { publicKey = ecc.privateToPublic(privateKey); eos.transaction(tr =>{ ...
1 vote
Accepted

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

The nodes cannot communicate with each other directly but both the nodes can communicate with the chain or genesis node. you have to just add IP and port of the genesis node into the -p2p-peer-address ...
1 vote

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

The answer from @cmadh would work in principle, but you would have to make sure you successfully called get_info for each block across the day, and you might get rate-limited or face connectivity ...
1 vote

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

Simplest way would be to use the RPC-Api and a public endpoint. Start with the first block of the day you want to count the actions for and call get_info until the last block of the day while ...
  • 1,844
1 vote
Accepted

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

This is from EOS NY's eosrp.io to calculate RAM price from the API request below: https://github.com/eosnewyork/erp/blob/master/backend/batchpriceupdater/src/com/eosrp/resources/EosResources.java#L90 ...
  • 3,405
1 vote

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

Matt Witherspoon from the eos developers telegram channel was able to provide an answer: without a valid mac app store signature, keosd can't use the Secure Enclave. block.one doesn't provide a signed ...
  • 11
1 vote

How is the the crash of a BP handled?

As far as I know, there aren't any alert mechanisms that notify the BPs. In terms of block production, they skip the BP that crashed(with a moderate time delay). Given that there are more than 1/3 ...
  • 208
1 vote
Accepted

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

You can use cleos and pass as --url parameter a prodcer API endpoint instead of your localhost. You can have a look here. https://www.eosdocs.io/resources/apiendpoints/ There is also a site ...
1 vote

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

The EOS Node Tools website provides daily block archives. It works with eosio v1.4.1. https://eosnode.tools/blocks As far as I tested, --mongodb-wipe is not required but recommended. If you did not ...
  • 475
1 vote

Onboarding new eos users to a note taking dapp

You may want to check out NoteChain, which is Block.one's note taking application that they use as an example project for dApp developers to use as boilerplate: NoteChain demonstrates the eosio ...
  • 5,524
1 vote

What Data ownership really is in EOS?

how this data is own by me. If the data really belong to me then no one could see it. You sign the data (the transaction) with one or more private keys that you own. Everyone can see the transaction, ...
  • 5,524
1 vote

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

As of 2018 October EOS size is 29GB after coming on live since May 2018. It's about 6GB a month or 72GB a year or average 100GB a year assuming its actively used.
1 vote
Accepted

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

You can download a snapshot of the blockchain form here, untar it and check the size.
1 vote

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

I finally found a way by redefining EOSIO_ABI. The "transfer" function in my contract get called when an EOS transfer is done through eosio.token contract. #undef EOSIO_ABI #define EOSIO_ABI( TYPE, ...
  • 156
1 vote

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

Short answer: there is no free, open-source honey. You can start with small EC2 instance on Amazon AWS (even with "free" one) and scale up when you need it. So you will not pay a ton until you ...
1 vote

How to scrape all accounts/public_keys in EOS mainnet?

You can use this service which does this periodically for you: https://www.eossnapshots.io/
  • 3,405
1 vote

How to scrape all accounts/public_keys in EOS mainnet?

Best solution I can think of is running a mainnet node with --plugin eosio::mongo_db_plugin to get all accounts in a mongo collection. However, by default, the public keys are not stored in the ...
  • 5,524
1 vote
Accepted

EOS world state sharding

Phase 4 - Parallel Optimization Summer / Fall 2018 Please refer to the following roadmap. https://github.com/EOSIO/Documentation/blob/master/Roadmap.md In the white paper, you can see that shard is ...
  • 1,015

Only top scored, non community-wiki answers of a minimum length are eligible