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1answer
24 views

Client libraries available for Flutter/Dart?

Probably not typically needed for an IoT device, but a general app that uses the Iota ledger might be on a mobile device, and the Flutter framework seems pretty handy (I like how it can output iOS and ...
0
votes
0answers
4 views

I can't work out how to get TangleID to work

So im trying to get tangleID to work to use it on a project. I am using this project. https://github.com/TangleID/TangleID But everytime I try and run the code i get an error message of "Mam.init is ...
21
votes
3answers
2k views

What is an IOTA “bundle”?

The IOTASear.ch tangle explorer allows searching for addresses, transactions and bundles. While the meaning of addresses and transactions seem clear to me, I am not aware of the purpose of bundles. ...
0
votes
2answers
34 views

Problem retrieving the content of zero value transactions from the testnet

I am sending two zero value transactions to a specific address on the testnet. The content is shown below: This is the address I am sending it to: ...
0
votes
1answer
17 views

How long do Zero Value Transactions last?

Let s say we have some critical information stored as Zero Value transactions on the Tangle. How long does it last? Which robust approaches do you recommend to keep a copy of those transactions? I ...
1
vote
2answers
64 views

Fetch Encrypted Data ValueError: Request failed validation

I am trying to fetch bundles from the Tangle based on their tail transaction hashes. I am trying to follow step 7 of the Pyota Tutorial I successfully encrypted data and included it in a zero-value ...
1
vote
2answers
72 views

Receiving JSON messages from ZMQ feed using an IRI fullnode

I am trying to use ZMQ feeds to monitor IRI nodes and addresses, but I am having trouble obtaining the "Message" in text and/or JSON. I am using this code: let zmq = require('zeromq') let sock = zmq....
11
votes
2answers
2k views

What's the difference between a private key and a seed?

What is the difference between a private key and a seed? When people talk about the "secret key", do they mean the "private key? Are they the same? What are public keys? How are they related to ...
1
vote
2answers
57 views

How is a MAM stream implemented on the Tangle?

What I am wondering is how the Merkle tree for a MAM stream is implemented in the Tangle. Is each set of new data in the stream basically a "leaf", and considered a separate transaction on the Tangle ...
0
votes
1answer
21 views

Is it secure to enter your seed in a browser form to publish data to IOTA Tangle?

I am trying to publish my data on IOTA Tangle using MAM. For this, I have designed a web form where I have to enter my seed and press the publish button. The actual data is fetched from firebase ...
3
votes
2answers
197 views

Invalid Response when attaching to tangle

I'm trying to send IOTAs from Binance to my IOTA wallet 2.5.6. I generated an address and copied it into the withdrawal section of Binance. Then I submitted and confirmed it in Binance. When the ...
1
vote
1answer
14 views

How to define depth in IOTA?

i am trying to follow private tangle implantation and when I use bazel run :build calculator command. I am afraid I don't know how to depth in it .json file? any suggestions (link I am following for ...
3
votes
1answer
20 views

What is the minimum amount of transactions required to approve a new transaction?

The official IOTA FAQ mentions how Bitcoin needs roughly 6 blocks to verify a new transaction. What is the equivalent rough estimate for IOTA in order to verify a single new transaction? How big of a ...
18
votes
2answers
368 views

Consensus - how is a single, non-conflicting graph (tangle) maintained?

In traditional blockchains consensus is maintained by proof of work such that the valid chain containing the most cumulative work is agreed to be the consensus chain. IOTA lacks blocks and ...
20
votes
3answers
341 views

Consensus - what convergence properties does the tangle have when multiple conflicting transactions are built upon by different parts of the network

In traditional blockchains consensus is maintained by proof of work such that the valid chain containing the most cumulative work is agreed to be the consensus chain. IOTA lacks blocks and ...
0
votes
0answers
8 views

Can MAM transaction be appended?

There is an already existing MAM transaction that has been published on Tangle by a seed. Now, I want to add further data in the same transaction. Example, temperature sensor has published data ...
-1
votes
1answer
25 views

is tangle (IoTA) Depth-first search or Breadth-first search?

There is several of algorithms for topology sorting for DAG. What is algorithm used by tangle for search, is it Depth-first search or Breadth-first search or is there another method?
5
votes
2answers
263 views

(WebJS) MAM Channels using Channel ID's

For info I am using the web version of: https://github.com/l3wi/mam.client.js I am looking to use MAM for a web-only project. I really read all about setting up different channels. I have read all ...
0
votes
0answers
14 views

Transaction hedging

is it be possible to hedge every iota transaction with oracle? So you can avoid the IOTA price fluctuation and hedge it to USD for instance until there's settlement done.
0
votes
2answers
44 views

How do I know MAM data has been published?

I am running a code to publish random data on Tangle via MAM. If I don't fetch the data at the same time, and I just want to confirm if it has been published on Tangle, how do I do that? Also, is it ...
1
vote
1answer
28 views

Why is the async function not working while fetching MAM data?

I am making a simple MAM publish and fetch script. The first script is mam_publish which publishes the data. The other script is mam_receive which fetched the already published data. Now, the ...
0
votes
1answer
14 views

Edit MAM stream already implemented on Tangle

For my project, I have created a web interface on which I'm viewing a published MAM stream. I want to know that is it possible to edit or add new record to MAM stream that has already been published ...
0
votes
0answers
19 views

What is the difference between IRI-Playbook and IRI full node (Private tangle)?

I know there is three type of full node: 1- mainnet 2- devnet 3- testnet I wand to build private IoTA network with full control. So, I have found tutorial for private tangle: https://docs.iota.org/...
0
votes
1answer
29 views

Error in neighbors list on IoTA full node iri-playbook

I have install iri-playbook but when I want to show my neighbors list using this command nbctl -l it shows this error: ERROR: Error response from node: code 500, response: '{"exception":"port out of ...
5
votes
1answer
37 views

Error cannot import name 'Seed' from 'iota'

When trying to import Seed from iota i receive following error: Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "...
1
vote
0answers
36 views

Compass: Can't build layers_calculator to compute Merkle Tree

I am trying to set up a private tangle and I cannot compute merklee tree. I followed this link: https://docs.iota.org/docs/compass/0.1/how-to-guides/set-up-a-private-tangle#step-2-compute-the-merkle-...
1
vote
1answer
39 views

How is IOTA´s transaction hash determined?

Ive been looking through documentation and articles but couldnt really find anything about it. I assume its the hash of all concatenated attributes? I am not talking about the bundle hash. And a ...
0
votes
1answer
81 views

toTrytes() does not work

I'm always getting this error without understanding why. TypeError: Cannot read property 'toTrytes' of undefined Code: // Require the use of IOTA library const Iota = require('@iota/core') // ...
1
vote
0answers
22 views

how many genesis in IoTA tangle?

If I have 10 sensors in IoT architecture and 5 of them start to send data at the same time, it will have 5 genesis in IoTA tangle? or only one genesis will be published? if so how to choose one from ...
1
vote
1answer
29 views

Install IRI full node on my PC Ubuntu: shows canceled

I want to install IRI full node IoTA on my PC with Ubuntu bionic 18.04 with core i3 and 8GB RAM. I entered the following command to install IRI: sudo bash < <(curl -s https://raw....
1
vote
0answers
36 views

Coordicide Whitepaper Jan 2020, Mana System, Averaged Mana

In coordicide whitepaper in section 3.3 the mana system is introduced. It is stated that an averaged version of mana will be used. While I think I understand the necessity to use the averaged mana I ...
0
votes
1answer
62 views

Which algorithms do IOTA use?

Is there a high-level overview of the different algorithms used by IOTA available somewhere? My assumption is that there are different algorithms used for signing bundles, creating addresses, ...
2
votes
1answer
43 views

IoT sensor publish data to tangle with IoTA platform using MQTT and MAM

I have pulse sensor connected to NodeMCU. This sensor publishes data to Mosquitto by MQTT protocol. I want to receive data from broker and publish it to tangle using MQTT and MAM. Mosquitto broker is ...
1
vote
2answers
55 views

how to trace the iota tip from the milestone transaction when there is no reference to the future transactions

As written in multiple forums, IoTA tips are chosen using the random walk method starting at the milestone transaction. The milestone transaction will have the reference to the old transactions. Tip ...
0
votes
1answer
84 views

IOTA “C” version (CClient) and feasibility of signing transactions on ESP32?

An article recently has been published entitled "Running the IOTA "CClient" library on ESP32" (>>>Link to Article<<<). It is not clear to me if by using this C version of IOTA is ...
1
vote
1answer
21 views

How is Tangle Quantum Immune? [duplicate]

I was going through the iota tangle documentation and features and found one of the feature mentioned as Quantum Immune , so basically looking for resources to understand the quantum immune property ...
2
votes
1answer
71 views

Is it possible to extend IRI to answer to an HTTP GET?

There are some use cases where the distributed ledger is extremely useful to store security information in a decentralized storage. But those information need to be pulled out from the tangle by a web ...
0
votes
2answers
25 views

How do transactions reference each other in the Tangle?

How do transactions reference other transactions in the Tangle, is it through the Merkle root, or signature message fragment? And how can you make a transaction reference another chosen transaction. ...
8
votes
2answers
398 views

IOTA Light Wallet returns Request Error when sending funds

I am running IOTA Light Wallet 2.5.4 and am connected to my own full node that is in-sync with 4 healthy tangle connections. The minimum weight magnitude (MWM) is set to 14. When attempting to send ...
0
votes
1answer
43 views

Making An Offline Transaction At The NodeJS Console

I am making an offline wallet web app to use with my open source airgapped encrypted device - the PrivateKeyVault. The web app will be modeled after this one which is seen used in this video. The ...
15
votes
3answers
411 views

Is it possible to cancel a transaction?

I made a transaction from Android wallet to Exchange A of 10Gi. The transaction is in pending. I tried a few times to reattach, but the transaction is still in pending. I made a second transaction ...
2
votes
2answers
161 views

ZeroMQ subscription to address not working

is any of you able to subscribe to ZeroMQ with address as a topic? According to the documentation this should be possible by putting the public address as a topic in socket.subscribe(). I have no ...
1
vote
2answers
91 views

How many type of Proof-of-Work is used in IOTA?

In the following article about "IOTA CryptoCore", it is written: "IOTA core functions like address generation, signing, “Mini-Pow” and Proof of Work (PoW) need much computational power which ...
1
vote
2answers
76 views

What is the correct way to write “Hello, World!” to the tangle?

How would a simple program look like, that, when run, writes the message Hello World to the tangle?
3
votes
1answer
62 views

How to send Health Data to Tangle via MAM?

I am trying to make a project to send Health data from my phone to Tangle via MAM. For this purpose, I have made a sample file that publishes sample health data to Tangle. When I am running the code, ...
1
vote
2answers
47 views

Sending data as input in IOTA

I am Muhammad, working with my way to use IOTA to fetch data from IDS/IPS. IOTA uses 2 transactions as input if I am not wrong. I want to send data of IDS to IOTA. I am using Grafana and mysql to ...
1
vote
0answers
40 views

Connecting another node to a private testnet

I´ve set up a private testnet following the one command tangle tutorial. It works properly (curl checked) When I try to connect another node to this private Tangle, I get: Dropping connection to ...
3
votes
0answers
45 views

Smart Contract for IOTA: Is it finally possible to deploy a contract in IOTA in practice? Or still underway?

I heard before that IOTA decided to add the possibility of developing and deploying the smart contract in IOTA (Like Ethereum) with a specific language called "Abra", and it was promised to be run at ...
0
votes
0answers
12 views

Alternative signature schemes for iota

Which post quantum signature scheme can be replaced with Winternitz signature scheme in iota?
1
vote
0answers
28 views

what is the Mathematical principle of the tangle

how do i get the probability of the douple-spending?

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