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Questions tagged [dapp]

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0
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1answer
31 views

As of January 2019, what are the top 10 Dapps on EOS?

What are the top DAPPS on EOS as of 2019 JAN? Dapps as in "fully" decentralized and also ones that are "centralized". I believe many of the EOS dapps are centralized and not really "decentralized" as ...
1
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0answers
114 views

A possible alternative sign in/login process instead of firebase auth / amazon cognito using an eos contract?

i got the the idea of an secure alternative login process using an eos smart contract instead using firebase or amazon cognito. I would like to know if something like this feasible? My idea is ...
0
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1answer
17 views

usr/bin/cleos no such file or directory

I am using Ubuntu 18.04 LTS. I am trying to deploy a smart contract, following a Steemit post but I am getting an error that I don't really understand. I have run nodeos according to the the Eos ...
1
vote
1answer
31 views

EOS RAM requirement for hosting a full node?

https://medium.com/@bytemaster/eosio-ram-market-bancor-algorithm-b8e8d4e20c73 In this article, Dan pointed to the fact that "Keeping RAM scarce (64 GB) lowers the cost of hosting a full node, but ...
1
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1answer
19 views

Is it possible to operate with not EOS-based tokens in EOS dapps?

I can't understand exactly. Is it possible to use not EOS based tokens (eth for example) for payment purpose in EOS dapp directly. Or it can be done only via 3rd party exchanges?
1
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0answers
27 views

Payment to dapp with text comments best practice

I am new in eos, so maybe i say something strange. I want to create a dapp that can receive payments from mobile wallets with text comments. I imagine this like front end where user type text and ...
3
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1answer
32 views

BUG when two accounts send action at the same time to modify multiindex table

It took me several days to find the bug. I got a table like this TABLE t {uint64_t key, name player1, name player2, uint64_t status}; when the contract recieved the specific action , It will ...
1
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1answer
43 views

is that a good way to gather smart contract action data in backend with Demux.js?

there is a Bill functionality in my DApp, which need gather millions of EOS action data to make up a token transfer data for front end to display. the question is, it takes quite a long time. if it ...
2
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1answer
40 views

Storing the data in “Memo” of block chain transaction

Can I store large size of data such as MP3 in Memo? Are there any implementation examples? To store the data or any comments in Memo, should I send some amount of EOS? Can I store the data without ...
1
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0answers
26 views

Reclaim RAM for dApp that creates an account and transfers funds

A dApp that creates a new account and transfers EOS to that account will have to 'pay' for 240 bytes of RAM for the new balance object on the new account. When the new account transfers some funds, ...
3
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2answers
99 views

eosio-cpp -abigen hello.cpp -o hello.wasm

Ubuntu 18.04.1 on VMware (Windows 10 64bit) EOSIO v1.4.1 eosio.cdt-1.3.2 i just run the compiler like this : win@ubuntu:~/eos$ eosio-cpp -abigen hello.cpp -o hello.wasm then, the ...
1
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2answers
37 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 ...
0
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0answers
25 views

Examples of an http-based app with EOSIO backend?

I'm currently trying to find examples of dApps with an http-based frontend, that makes calls to the EOSIO mainnet. I get that EOS is just a backend for accounts, actions, etc, but what confuses me ...
1
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1answer
22 views

What gambling type dapps have been created for EOS?

What are some gambling dapps that are created with EOS? Are there any gambling dapps that are not website centralized as in I can play the dapp with just a simple html/js file interacting with the EOS ...
1
vote
1answer
48 views

Is there a list of Ethereum Dapps that have confirmed moving over to EOS?

People say Ethereum dapps are moving to EOS platform. But where is this list of Dapps? And which ones are the most active that is actually moving to EOS?
3
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1answer
34 views

Where can a startup seek funding from block.one for building out EOS applications?

Is there a place where one can goto for funding from block.one for building out EOS apps?
1
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1answer
34 views

other way to let contract account provide for cpu/bandwidth than delegatew/undelegatew?

as far as i can tell it is somehow inconvenient to let the user of an contract "pay" for the cpu time. I thought that the one who manages the contract, has to stake for cpu/bandwidth, so user can use ...
2
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1answer
19 views

Can an object of the class 'contract' or a class that inherits 'contract' be created in the cpp file of the contract we are making?

Can an object of the class 'contract' or a class that inherits 'contract' be created in the cpp file of the contract we are making?
6
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1answer
37 views

Make Ledger Reflect All RAM Changes

If we want those witnessing the chain to know about our apps state without any knowledge of our service layer, what might be the best approach? Since the ledger only records the data given to it in an ...
2
votes
1answer
111 views

Why is a BlockIndexState model required when using demux.js?

I was checking the project eosio-project-demux-example since I want to use demux.js in my own project. I have doubts about the mongoose model BlockIndexState. I would like to know what is it used for....
4
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1answer
131 views

Why do we have to provide private keys in eosjs?

Eosjs takes a parametre in its config viz. keyProvide where we have to pass the private keys. Eos = require('eosjs') // Private key or keys (array) provided statically or by way of a function. // ...
0
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0answers
23 views

Have you considered combining the existing cloud storage with the EOS block chain for Dapp development?

I am currently developing Dapp which evaluates the value of an item based on users' votes. The result of voting, ID of the items exists in the EOS block chain. However, I want to store and manage the ...
2
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1answer
378 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
198 views

I can not find a definition for require_auth2, what does this do and how?

require_auth2 is used in action.hpp's require_auth. void require_auth(const permission_level& level) { require_auth2( level.actor, level.permission ); } require_auth2 is declared in action.h....
0
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2answers
39 views

Why the EOS documentation still says Dawn 4.1?

Has the documentation been updated to 1.0?
0
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2answers
57 views

EOS Programming tools in the near future?

I am starting to make my first steps on EOS programming but I find the tools available to be quite raw at the time being. There are many things (Integrated IDEs, platform installers, etc) that could ...
4
votes
1answer
267 views

Why Launch dapp On-Chain VS Side-Chain?

I am struggling to come up with reasons to launch a dApp intended of reaching significant size completely on the main chain vs a customized side chain. I think either would utilize a token. By ...
1
vote
1answer
154 views

Does the RAM burn out forever or is it reusable after some time?

I would like to purchase RAM to do some actions such as smart contract executions as well as token transfers. On Ethereum, you would have to pay for gas and the gas burns forever. Am I going to be ...
3
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5answers
281 views

Do you know any useful links to help you develop DApp?

I've gathered links to help you develop DApp. I want more.
1
vote
1answer
82 views

Authorization flow in dapps

How authorization works in EOS dapps? I mean in application layer. For example in a trello like application how we manage to just the participants in the project are able to see the tasks?
1
vote
1answer
70 views

Does EOS VC invest in dApps in exchange for equity or tokens?

EOS VC has taken forward steps to invest in dApps in partnership with other VCs. In the traditional world, VCs invest in companies in return for equity. What does EOS VC and their partners seek in ...
1
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0answers
23 views

Is it permissible for dApps to use 'EOS' in their brand name?

Are there any trademark restrictions on naming dApps EOSbook, EOScabs, EOSfood etc? If the answer is no, then isn't it possible that somebody out there might go out and obtain a copyright for 'EOS'? ...
1
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2answers
409 views

Difference Between Eosio.token and Eosio.system

I have an idea for a DApp I'm looking to build after launch. It won't be large, but it'll be on a large platform (won't name it here because I don't want anyone taking my idea lol). After cloning the ...
3
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1answer
162 views

Can an action in a smart contract concurrently executed?

In a smart contract if an action is executed simultaneously and if it tries to modify the same record in a table(using multi index API), How to add mutual exclusion to the shared resources? For eg. ...
2
votes
2answers
59 views

How will dApps & DACs built on EOS deal with the requirements of GDPR?

GDPR expects it's citizens to have the 'right to be forgotten'. A company failing to fulfill this obligation is expected to pay a hefty fine. How will decentralized autonomous communities who store ...
8
votes
2answers
520 views

What is the correct way of issuing your own token?

There is an esoio.token contract. This contract be used for issuing and storing many tokens starting with EOS. However, is it possible to issue tokens without using the eosio.token contract? What is ...
10
votes
1answer
126 views

How to architect token economies for DACs / DAOs built on EOS?

From the keynotes and interviews of the Block.one team it is evident that they envision a world of Decentralized Autonomous Communities (DACs) and not just decentralized apps. Steemit is the primary ...
5
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2answers
602 views

Can someone explain EOS sidechains to me?

Independent platform, Main chain, sidechains, smart contracts. Can someone define these terms for me? I don't quite understand the idea of sidechains. Is sidechains something like threads in ...
5
votes
1answer
56 views

How can developers prevent abusive or spammy transactions on dApps if it's free for users to use?

Let's suppose Facebook was built on EOS as a dApp. A 'Like' is a transaction written on the blockchain. Unliking that Like is also a transaction written on the blockchain. What if a user continuously ...
5
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2answers
79 views

How can a dApp developer ensure that their tokens are Utility tokens and not Security tokens?

If a developer wishes to create Utility tokens and not Security tokens, what are the conditions it must fulfill? From my understanding, Utility tokens must also be native tokens - meaning the ...
16
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5answers
1k views

What programming languages will be supported by EOS?

I understand that EOS supports C++ at launch and can support any language that compiles into WebAssembly (WASM) Here is a list of languages that compile to or are compatible with WebAssembly. I am ...
1
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0answers
24 views

How will backend analytics such as health monitoring and business intelligence work for EOS dApps?

Centralized apps often use tools like New Relic to monitor their health in real-time. The use of business intelligence analytics platforms like Tableau is also common practice. Can the same tools be ...
6
votes
3answers
322 views

Are there benefits to holding EOS as a user?

From what I understand holding EOS gives developers access to RAM and possibly storage. So developers and investors hoping to launch sites will want to hold EOS. I'm very interested in EOS and want ...
7
votes
1answer
252 views

How will users login to dApps built on EOS? Will be see 'Login with Scatter' being adopted?

For consumer products, a seamless authentication can really boost the usability of the app. In the centralized world, 'Login with Facebook' standardized the login experience. In the decentralized ...
6
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2answers
82 views

Is it possible for a popular centralised app like Twitter to port to EOS?

If the possibility for Twitter to become decentralized on the EOS blockchain exists, what are the point-by-point steps it should take to become a dApp? What will happen to their existing users, how ...
8
votes
2answers
279 views

Is it possible for Ethereum dApps to port to EOS?

If the makers of https://www.cryptokitties.co/ chose to port their dApp to EOS, can they? If yes, what are the point-by-point steps involved in the transition? What are the tools and tech required to ...
7
votes
1answer
222 views

Which version of C++ can I use in smart contracts?

Which version of C++ can I use to implement smart contracts? For example: C++11, C++14 or C++17? Do we have any constant or doc where it is defined? Also, in my understanding the code is sandboxed, ...
5
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1answer
99 views

Unlimited BW for EOS dApp users?

Q. - Can anyone have unlimited bandwidth for EOS dApp users? Will that be a paid service from Block Producer (BP)? By Unlimited BW, i mean - no. of simultaneous users fetching the EOS blockchain ...
27
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5answers
2k views

Where can I find complete (whole stack) EOS dApp development example projects? With smart-contracts, the necessary C++ coding and a browser interface? [closed]

I can't wait to find complete EOS.io dApp examples. Not only the WASM and Smart Contract, but the complete stack with f.e. the web interface. Please add any EOS dApp Example project as answers on ...