Questions tagged [tangle]

For questions about the tangle, the directed acyclic graph which has the same function in IOTA as the blockchain has in other cryptocurrencies.

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1answer
92 views

Transfer from Multisg into normal address

I am following the example described here: https://github.com/iotaledger/iota.lib.java/blob/master/jota/src/test/java/jota/IotaMultisigTest.java I put funds into a multisig. Now I want to move that ...
5
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1answer
757 views

Extracting data from the tangle

The ownership distribution of Iota has been written about but how does one get these addresses? I looked at the Iota API and don't see an obvious way. And the tangle seems like some of it is in binary ...
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0answers
7 views

Tangle Statistics

I am a computer science master student at York University, Toronto, Canada. My thesis is about Exploring the scalability, throughput and security characteristics of the Tangle through simulation ...
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1answer
31 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 ...
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0answers
10 views

Accessing JSON message from IRI node API using Python 3

I am using one command tangle. The tangle is running on Ubuntu machine. From the list of APIs given for IRI node, I'm trying to broadcast a transaction. For this, the first step is to get ...
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0answers
17 views

Connection to private node (one command tangle) refused

I have created a one command tangle from this link: https://docs.iota.org/docs/utils/0.1/community/one-command-tangle/overview And using API given here: https://docs.iota.org/docs/node-software/0.1/...
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0answers
11 views

Can I check if the transaction has been confirmed and monitor its time using IOTA JavaScript Library?

I am using this code to send transaction to IOTA Tangle (Mainnet). I am sending 10 transactions using a loop. I am also monitoring the time that is taken to prepare transfer and send trytes. Here is ...
0
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0answers
8 views

How do you check your message's length in IOTA transaction using IOTA JavaScript library?

I am sending a zero-value transaction (using IOTA JavaScript library) with message: The IOTA distributed ledger operates on ternary messages. These types of messages are represented by trits {-1,0,1}, ...
3
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1answer
18 views

Using Public Nodes in IOTA Tangle for testing purpose

I want to send some string data using MAM over IOTA Tangle. Right now, I am using devnet. I want to know how can we test our transactions using public nodes on Mainnet? What is the process for it? I ...
1
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1answer
32 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 ...
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2answers
68 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
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1answer
23 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 ...
18
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2answers
370 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
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3answers
343 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
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0answers
12 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
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1answer
31 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?
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2answers
48 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
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1answer
38 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
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1answer
16 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
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1answer
33 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 ...
1
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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 ...
0
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2answers
26 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. ...
1
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2answers
81 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
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1answer
82 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, ...
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0answers
28 views

what is the Mathematical principle of the tangle

how do i get the probability of the douple-spending?
6
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4answers
1k views

Is double spending possible in IOTA?

It is mentioned in Tangle's white paper (technology behind IOTA) that From the above discussion it is important to recognize that the inequality λ > μ should be true for the system to be secure. In ...
0
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1answer
43 views

Is it possible to secure the data of an IOT idevice in an ICS by using MAM?

The idea is to add IOT devices to an ICS (industrial control system), send and retrieve the data of these devices through the tangle. The data will be sent through the IOT device using MAM and be ...
1
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0answers
95 views

How can I get back my balance showing in my IOTA wallet?

I use IOTA Wallet Version 2.5.7 (2.5.7). I know I had 101.89800000 IOT in my wallet (my cointracking.info account confirms). I was able to log into my account, but my balance is showing 0. I tried ...
3
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1answer
199 views

Finding a double-spending inner conflict referencing two tips

I think that IOTA Transactions, Confirmation and Consensus is a very good reading. It helped me a lot on understanding IOTA protocol working. Nevertheless I have a doubt: regarding the Double Spend ...
1
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1answer
100 views

IOTA network actual usage

My understanding is that IOTA is mostly useful to communicate data rather than to store data, given that the network undergoes periodic transaction pruning (snapshots). Is this correct? If so, is ...
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0answers
98 views

IOTA and LoraWAN: Proof of Concept of storing data in the Tangle

I found an article here :(Link to the article) entitled "LoraWAN and IOTA: Proof of Concept of storing data in real time in the Tangle" , written by Harm van den Brink (IOTA foundation member). ...
3
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1answer
177 views

How to install IOTA in a small device supports LoraWAN?

I found an article here :(Link to the article) entitled "LoraWAN and IOTA: Proof of Concept of storing data in real time in the Tangle". The thing is not clear to me is that if IOTA has been ...
1
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2answers
91 views

How can the transactions in the Tangle be ordered temporally?

I do not understand how the IOTA Tangle DAG indicates by its structure the temporal order when two spends are on separate, independent, branches. It is possible that two transactions occur and are ...
2
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1answer
52 views

IOTA and Tangle relation

I used to think that IOTA is the cryptocurrency which uses the Tangle Direct Acyclic Graph. But today I spend some time on the IOTA official and there is no single appearance of the word "...
2
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2answers
91 views

physical clock or logical clock for timestamping

Timestamps in Tangle are already mandatory and must have a value in a certain range, which seems to be between the last snapshot time (epoch 1517180400, which is GMT: Sunday, January 28, 2018 11:00:00 ...
13
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0answers
387 views

How to determine how quickly the network detects double-spends?

In the question "How does the system sustain regular low-effort "splitting attacks"?" a scenario about the ability to disrupt the network by spamming double-spends and having the network ...
4
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1answer
74 views

impact of a single double-spend to the network

I just start looking at iota, the general tangle without Coordinator. I am reading the this presentation about the consensus mechanism, where I'm confused about the impact of a single double-spend to ...
3
votes
1answer
178 views

With IRI version 1.5.2, how does the prevention of lazy tip selection change the tangle's partition tolerance?

One of the features of IOTA is that sub-tangles can be constructed and then attached to to the main tangle in the future. With IRI version 1.5.2, how does the prevention of lazy tip selection change ...
27
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1answer
2k views

What does the IOTA coordinator actually do?

We know that there is a coordinator, which helps to secure the network in order to prevent attacks in early stages of adoption. What does it do exactly, how does it work?
3
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1answer
118 views

What would happen, if two different transactions with the same hash get published simultaneously?

This is related/a follow up question to "If someone were to find a Proof of Work collision, could they pin the tail of the tangle to the head?" Imagine two transactions that hash to the same value ...
2
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1answer
245 views

Immutability in IOTA: How to be sure a transaction is not “removable” from Tangle?

In Bitcoin and Ethereum, the longest chain with the most proof-of-work (POW) invested in it is accepted as the true chain and used to determine balances and history on the network. Because of this, ...
1
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0answers
38 views

Permanent storage of transaction Tag and signatureMessageFragment? [duplicate]

I am not able to find a clear answer. I would like to ask whether the Transaction Tag and signatureMessageFragment for Non-0 transactions are purged during each snapshot, or not? If either of them is ...
5
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1answer
138 views

What is the blowball problem and what causes it?

According to IOTA Engineering: IRI 1.5.3 addresses the blowball problem seen on Mainnet. What exactly is the blowball problem and what causes it?
1
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1answer
133 views

If someone were to find a Proof of Work collision, could they pin the tail of the tangle to the head?

If someone were to find a Transaction Proof of Work collision, would it be possible to pin the tail of the tangle to the head and create an infinite loop? IE. Create a self-referential tangle segment ...
3
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1answer
98 views

What has been the growth rate of tangle confirmation rate until today?

I am curious to understand how the tangle has improved in terms of confirmation rate since its inception. Are there any statistics which show this? A positive growth is definitely a good sign. And if ...
1
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0answers
130 views

JOTA - Use of Servers

I'm using the JOTA : Library 0.9.11-SNAPSHOT API. I am using Eclipse JUnit testing for the example found at https://github.com/iotaledger/iota.lib.java/blob/master/jota/src/test/java/jota/...
3
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1answer
86 views

In IRI version 1.5.2, is the prevention of lazy tip selection a further entrenchment of the Coordinator?

For background, please read: https://blog.iota.org/coming-soon-iri-1-5-2-52114ca67a70 Under the hood, while doing validation, IRI will now remember the most recent milestone referenced by each ...
0
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1answer
90 views

Interacting with IOTA from mobile application?

Is it possible to interact with IOTA Tangle (for example, send a message) using an application installed in a mobile phone? If so, is it possible to install IOTA library in a mobile phone? And if yes, ...
2
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1answer
102 views

When can a transaction be considered irreversable? (without COO)

In an interesting exchange between Come-From-Beyond (CFB) and a Nxt developer, the question is asked: DEV. So when can a transaction be considered irreversable? CFB. Never, look at formula #14 in ...
2
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1answer
68 views

What is the exact stitching process that is being done on the tangle and side-tangle and who is doing it?

As a matter of transparency and of user and community education, I think it is important to properly catalog and make public the side-tangle-to-tangle stitching process that has been conducted by ...