Questions tagged [ipfs]

IPFS (the InterPlanetary File System) is a new hypermedia distribution protocol, addressed by content and identities. IPFS enables the creation of completely distributed applications. It aims to make the web faster, safer, and more open.

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480 views

IPFS. Add a directory recursively with an HTTP api

Is there an HTTP api equivalent of doing: ipfs add -r resources/public where resources/public is a directory with a static website (index.html in the root, css, js etc). Doing: curl -F file=...
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0answers
137 views

Evaluation of DApp (Smart Contract) storage concept with IPFS

i hope you can help me improve or validate my storage concept. I am glad for each suggestion. Since this is my first DApp, i might not consider all possible options for my problem. To understand the ...
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0answers
320 views

How to create a git repository on swarm?

I'm running geth --testnet on ropsten testnet and attached a swarm node to it. Now I should be able to use mango to host my git repositories on swarm. I installed mango-admin and git-remote-mango ...
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1answer
77 views

IPFS add and read file from node

I am currently playing around with IPFS in a docker container. I am able to send HTTP requests to the API using curl. I created a small text file with some text. I would like to add the file with the ...
2
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0answers
93 views

error when trying to upload picture from ipfs

$("#image").change(function(event) { const file = event.target.files[0] reader = new window.FileReader() reader.readAsArrayBuffer(file) }); function saveOnIpfs(reader) { return new ...
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2answers
129 views

Possible to search swarm or blockchain?

I'm getting my feet wet in this blockchain world and looking to build a dapp based on Ethereum for maintaining an inventory of products. About 400,000 items that can be updated, removed or added to by ...
2
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0answers
642 views

How to connect frontend with contract backend using truffle?

Right now I'm having some trouble understanding how it all fits together if I want to make a Dapp. I did create a contract and the frontend using truffle. Then I compiled it and deployed it to ...
2
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1answer
518 views

Ethereum IPFS Integration

By now i have developed few basic example apps to execute Ethereum contracts using truffle based web application in a private blockchain. I have setup an IPFS node in my local. Able to upload files ...
2
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1answer
661 views

Ipfs. Adding files using http request in meteor

Good day, I've spent some time trying to upload file to ipfs using http request (from meteor). Meteor.startup(() => { // code to run on server at startup Meteor.methods({ ...
1
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1answer
56 views

company using IPFS in their application

I am learning IPFS these days and curious about if any company is using IPFS to save data. When we upload file into IPFS, we get a hash and can use the hash to get access to the file content. But in ...
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0answers
111 views

Unhandled Rejection (Error): No valid “from” address specified in neither the given options, nor the default options

Unhandled Rejection (Error): No valid "from" address specified in neither the given options, nor the default options. ▶ 4 stack frames were collapsed. (anonymous function) C:/mydapp1/client/src/App.js:...
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2answers
560 views

Uploading files on IPFS Infura

I am trying to make a dapp to upload files on IPFS Infura. I am using IpfsHttpClient in web browser by including the script <script src="https://unpkg.com/ipfs-http-client/dist/index.min.js">&...
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0answers
91 views

Image and file storage in block chain

Is it possible to store a base64 image code as string in block chain? I know we can use IPFS or Swarm as a tool to store an image or a document, but if someone gets to know about the hash anyone can ...
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0answers
89 views

How to Connect IPFS client in xamarin forms.?

i need to start ipfs client in My xamarin forms app.Now with the emulator it is working but when it comes to device i don't know how to connect.?I want to connection for both platform(ios and android)....
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0answers
39 views

IPFS Protocol upgrade or migrations

How would I migrate from IPFS, let says that I got 10M files linked by IPFS, and I want to migrate all of them to Swarm, how would I do that? The question in a different way: I want to use a new ...
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0answers
23 views

Our vendor created the IPFS and Ethereum platform to store the PDF documents. How do i use the same code in Desktop Application

I am a quiet layman in IPFS and Ethereum. Our vendor created the web application which stores the documents IN IPFS (Ethereum). Now, we do need to do the same in the desktop application also. ...
1
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1answer
172 views

IPFS Config on windows 10

I'm trying to execute these commands on windows 10 ./ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["*"]' ./ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods "[\"PUT\",...
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2answers
369 views

Storing data on IPFS using KMS and ethereum

I am trying to build a blockchain on ethereum but keeping the data related to blocks in some distributed file storage system like IPFS or Storj and storing the hash of data in blocks. But we need our ...
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0answers
229 views

I get some “POST 404 (Not Found)” when I deploy the IPFS webui in production

I followed all the guidelines to deploy property this helpful tool. When I make it in my local machine, all works fine. But when I try to deploy the same in a production server, it shows me some 404 ...
1
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1answer
315 views

Where do you save the application data of a Dapp?

Let's say that I want to implement a Dapp similar to Facebook. Each user has its own profile, pictures and information. Usually you would use a database to store all this data. This guarantees that ...
1
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1answer
211 views

No output when writing data to IPFS and storing its hash through Solidity

So I am using truffle. Following from Creating a form in IPFS for users to enter data [check the code in answer], doing some changes: Contract name - IpfsContract.sol test.js uses the following JSON ...
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1answer
32 views

Best Practice for Arrays you will Write to Often

I want to build an App with an array data structure that I would like to keep private. So far, I've wanted to build it between IPFS and Ethereum. But what would be best practice for an array that I ...
1
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1answer
820 views

IPFS API calls and Connection Refused

I have a lot of errors using the API and I am wondering if there is anyway to debug it. When I use curl "http://127.0.0.1:5001/api/v0/object/get?arg=QmU5KhkgvweYgE3Gsr8A19uFQrq7mszx7dubcoo89cTmAV&...
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0answers
25 views

Error: IPFSInbox has not been deployed to detected network

It's my first time writing smart contract in solidity and using IPFS to develop my dapp. I don't know how to solve it and why it pops up this errorNo web3 instance injected, using Local web3. Error: ...
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1answer
172 views

Upload a full directory to IPFS using ipfs (js-ipfs-http-client)

I want to upload a directory to ipfs on my browser using (js-ipfs-http-client) module. I found this old issue. https://github.com/ipfs/js-ipfs/issues/277 So I decided to use recursive way to add files ...
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0answers
35 views

How to use the ipfs.add() function?

Here is a function that I have written to add a file on clicking a button, which calls the function 'onSubmit' onSubmit = async (event) => { event.preventDefault() await ipfs.add(this.state....
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0answers
43 views

How to use the ipfs.get()?

I am new to IPFS. I added a file in IPFS and then, pinned it. Now, I am trying to retrieve the file. I am writing the code in React. Hence I used the following code: ipfs.get('/ipfs/...
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0answers
42 views

Hosting pet-shop DApp on IPFS - JSON Files problem

I am trying to host DApp "pet-shop" which one of the truffle boxes on IPFS. rsyncing of src, build/contracts and ipfs add files went very well and there are plenty of peers as seeders on the network ...
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25 views

IPFS - file stored by all users

Suppose one or many users used my fully decentralized app to store different files on IPFS. How can I keep track of all file hashes by using smart contracts?
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0answers
49 views

NuCypher for storing file securely on IPFS

Please someone guide me how I can use NuCypher Algo for storing a file on IPFS such that only a set of people can open its ipfs-hash link. Can you tell the implementation because I am finding it ...
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1answer
64 views

Ethereum & IPFS Storage Question

Etherum vs IPFS for Long Terms Storage of Critical document files? Storing high priority files on the blockchain. I am also writing a smart contract for the files on Etherum. I have concerns about ...
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0answers
96 views

IPFS dapp hosting

I have uploaded the dapp frontend folder along with contracts json files on the IPFS using ipfs add <path> ipfs name publish <hash> commands. I am running Ganache for in-memory virtual ...
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0answers
32 views

IPFS dynamic content

Can my users store dynamic content on IPFS and how that will reflect on my dapp, what will happend when everytime user can update the state of the app. How this will reflect it? Imagine something like ...
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0answers
102 views

IPFS image download with HTML

I have searched quite a lot now about how I can download a photo stored with IPFS having the hash in HTML. I have tried using the hash and <a href={`https://ipfs.io/ipfs/hashKey`} download="...
0
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1answer
165 views

ipfs.files.add(Buffer) function causing TypeError: Cannot read property 'add' of undefined

I am trying to upload an image to ipfs using ipfs.files.add() function but it is causing me this error Uncaught TypeError: Cannot read property 'add' of undefined at App.onSubmit (App.js:70) at ...
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0answers
6 views

showing unknown command “API.HTTP”

For configuring CORS in IPFS config i executed command ipfs config --json API.HTTP Headers.Access-Control-Allow-Methods "[\"PUT\", \"POST\", \"GET\"]" but it giving error unknown command "API.HTTP". ...
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0answers
80 views

Migrating or representing a Microsoft SQL Database on the Chain

I am wondering what is the best way to migrate or represent a massive, 50 table, Medical Health Records SQL Database on the Blockchain. Is it best done with IPFS hash on Ethereum or is Hyperledger a ...
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2answers
318 views

DApp using IPFS Ganache and MetaMask

I am following a tutorial (hosted by dappuniversity) on youtube regarding DApps using IPFS. I have done exactly everything as mentioned in the tutorial but i get this errors: GET https://ipfs.io/ipfs/...
0
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1answer
156 views

How can I connect my static page (Dapp) to my ipfs node?

The very naive way I'm going about it is: const node = new Ipfs({ host: "xxx.ip.address.xxx"}); When I save an image from the static page, it does give me an ipfs hash back and save it to the local ...
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2answers
816 views

Upload file to IPFS from HTML page

I am trying to upload the file to IPFS from HTML page and below is my code but I am getting below error. Uncaught ReferenceError: Buffer is not defined I have imported below statements <script ...
0
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1answer
83 views

What would an Etheruem-like blockchain look like if each block were just an IPFS hash?

I see a lot of people tout the enormous benefits of using IPFS as a store of data. Meanwhile, the Ethereum blockchain is over 1TB in size, with quesitonable need to keep the earlier blocks. In ...
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2answers
207 views

Ethereum vs InterPlanetary

I've been reading about Ethereum and it's fundamentals for a while now. I wonder what is difference between Ethereum and InterPlanetary File System ?
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4answers
2k views

How do I implement buffer/readable stream in order to add a file to IPFS?

I'm trying to upload a file from my directory to IPFS. Below is what they require from API: const files = [ { path: '/tmp/myfile.txt', content: (Buffer or Readable stream) } ] ipfs....
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1answer
80 views

Does LemonEmail Support Perfect Forward Secrecy

LemonEmail looks like a very interesting implementation of 100% decentralized messaging system with end-to-end encryption. From what I understand from the information available, it uses the Ethereum ...
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1answer
503 views

Implement Web3 and IPFS on server side (backend)

How do I implement Web3 and IPFS on the server side (backend)? I am able to implement on client-side (using web3.js and ipfs.js in HTML script tags) for localhost. However, it fails when I run the ...