# All Questions

915 questions
Filter by
Sorted by
Tagged with
54 views

### How to use “iota.lib.js.powsrvio” via a small device supports LoraWAN?

If we want PoW is not performed in the device (in particular for low energy devices) we can use iota.lib.js.powsrvio. How to use powsrv.io? And what are prerequirements ? (Assume we want to use it in ...
183 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 ...
118 views

### Transaction is inconsistent. Reason: tails are not consistent

i'm trying to promote a transaction by using the following code const spamTransfer = [{address: '9'.repeat(81), value: 0, message: '', tag: ''}] iota.promoteTransaction(hash, 10, 9, spamTransfer, {...
94 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') // ...
175 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 ...
86 views

### Relativity of simultaneity in observing the best confirmed double-spend in a COO-less Tangle

How is the 'Relativity of simultaneity' in observing the best confirmed double-spend in a COO-less Tangle resolved? For example, in answering this question, it was answered that the double-spend "...
38 views

### getAccountData returns undefined

it is a few days ago that getAccountData has stopped returning value (returns always undefined). Does any of you know why? This is the code: iota.getAccountData(seed, {start: 0,security: 2}) ...
258 views

### Integrating IOTA into UNITY

I'm trying to integrate IOTA into the Unity game engine although whenever I try running the code I get "Insufficient value submitted" I have made sure that my seed is accurate and that I have enough ...
93 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 ...
70 views

### Is there a way to access a list of all bundles?

Is there a way to iterate through all bundles in a block explorer, or is there a way to get access to a list of all bundles?
115 views

### When will the 1,048,577th Milestone happen using the current issuance schedule?

The Coordinator can sign 1,048,576 Milestones before it runs out of new keys and has to resort to key reuse. At that point there would be a serious security vulnerability in the system due to address ...
113 views

### Without Coordinator issued Milestones, how will a post-COO node know if it is in sync?

At the moment, a node can be defined as 'sync' with the network based on the last solid subtangle Milestone. Without the Coordinator issued Milestones, how will a post-COO node know if it is in sync? ...
64 views

### How does Trinity know if an address is being reused on a fresh install AND a new Snapshot?

If a user reuses an address, then the funds might be in jeaporady. Given that, at the moment, the Trinity wallet knows that the user has an active address from the snapshot, and from any recorded ...
187 views

### Tip selections and acceptance

If I select any two tips randomly, without a full knowledge of the tangle, will it change the probability that my transaction will be selected by other transactions?
53 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 "...
150 views

### Is the IOTA Coordinator and Milestones similar to Bitcoin checkpoints?

A comment was posted in the internet that the Coordinator doesn't make IOTA any more centralised than Bitcoin because Bitcoin has checkpoints. Someone even said, The purpose of the checkpoints ...
171 views

### How are random walk entry transactions chosen in a coo-free tangle?

With the coordinator, the MCMC random walk tip selection algorithm starts with a milestone as its entry transaction. Without the coordinator, there are no milestones. How is the entry transaction for ...
36 views

### How to understand if a transfer is an ingoing or an outgoing one by calling getAccountData?

I'd like to know how I can check if a transfer is an ingoing or an outgoing one, and know the respective sent/received amount by calling getAccountData from the Iota JavaScript library.
102 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 ...
1k views

I can't find the Wikipedia page for IOTA. I thought there used to be one. What happened to it? Did it get deleted? Why? Is there a place where more information on this can be found?
368 views

### Real incentives for running a full node?

IOTA requires a widespread global network consisting of a large number of nodes in order to function properly. Someone has to pay for the nodes that require bandwidth, memory and disk space. They are ...
150 views

### Sybil attack with IOTA?

The solutions to attacks proposed by IOTA white paper seems unclear, in particular, in case of double-spending, it remains unclear what stops a computationally powerful adversary from conducting a ...
189 views

### Incentives to Run a Full Node

Is there any incentive to run a full node in IOTA? If not, what makes people to run full nodes and how they keep them running if there are no economical returns out of it?
51 views

When you want to do several transactions how do you update the people transacting with you of your new address? In the case of machines transacting with each other how will the machines know the ...
142 views

### Does IOTA have block finality (at the moment)?

As the title says i am interested in the block finality of IOTA. In the long run there seems to be no instant block finality in IOTA because it is only considered confirmed as some number of tips are ...
98 views

### List of tutorials and sources to start developing on IOTA [closed]

I am looking for documentation about IOTA and development tools. Also if you know examples of real-life applications (industrial and commercial) it would be appreciated. I am interested mainly in ...
112 views

### Which feature/s will avoids SPAM or massive invalid transactions in a IOTA network?

Watching IOTA presentation there is a thing that is still unclear for me: Knowing that IOTA involves PoW but a much lighter one (in order to achieve thousands of transactions per second, but also ...
45 views

### findTransactionObjects returning an empty array when searching for a valid bundle hash

I'm doing this, which returns an empty array: const iota = new IOTA({ provider: 'http://node05.iotatoken.nl:16265' }); iota.api.getNodeInfo(function(error, success) { if (error) { ...
235 views

### How is the Gossip Protocol, which is used by IOTA, classified?

Wikipedia says: It is useful to distinguish three prevailing styles of gossip protocol: Dissemination protocols (or rumor-mongering protocols). Event dissemination protocols ...
108 views

### Trinity wallet - Keychain error on MacOS

When I am setting up a password for iota wallet I get the following error: Cannot access keychain required for secure storage. I am on the latest version of Trinity v0.4.0 and using macOS Mojave. Do ...
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 ...
66 views

### How many bytes do I need to store an IOTA seed?

IOTA seeds consist of 81 trytes. Assuming a balanced trinary system, the tryte domain is $[-1, 0, 1]$. The maximum decimal number of a single tryte is 13, because \$1\cdot3^0 + 1\cdot3^1 + 1 \cdot 3^2 =...
94 views

### Is MAM encrypted message has perfect secrecy?

Here I am referring to MAM in restricted mode, where side key is used to encrypt the message. One time pad is known for perfect secrecy. Since MAM uses the one-time pad, is MAM encrypted message has ...
26 views

### what happen if we are in an untrusted network [closed]

I am discovering Iota and I am trying to find out if I it can be applied to securely send command between iot device, being 100% sure the command has been received. My concern is about the network, ...
53 views

### How will you know if your node is synced post Coordinator removal? [closed]

Currently node sync status is determined by milestones which are issued by the coordinator. Once autosnapshots, and removal of the coordinator occurs, how will we know if the node is in sync with the ...
75 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 ...
66 views

### What does the new parameter 'reference' do in sendTrytes?

PR #112 added a second parameter, namely String reference, to GetTransactionsToApproveResponse. This parameter can also be set in sendTrytes. The Javadoc there says Hash of transaction to start ...
490 views

### how to resolve “throw new ERR_INVALID_CALLBACK()”?

i'm facing following error while running command mvn clean compile : fs.js:137 throw new ERR_INVALID_CALLBACK(); ^ TypeError [ERR_INVALID_CALLBACK]: Callback must be a function at ...
41 views

### Is it able to fetch transactions from previous snapshot via api?

With current global snapshot feature, transaction data would be wiped out and only addresses with balances would remain. I know we can search these data from some DB archives. But are we able to fetch ...
73 views

### What is the Pearldiver? [closed]

I've frequently heard the term "Pearldiver" around Iota. What exactly is it and what does it do?
143 views

27 views

### with local snapshotting what is minimum amount of hd space you need?

i was thinking maybe a wallet like trinity can be node too which just downloads 100mb (or whatever the minimum amount is) this way we could add thousands of nodes to the network without effort like ...
62 views

### Given a tail transaction hash, can it returns multiple bundles by calling get_bundles?

According to pyota library, it states that get_bundles() may return multiple bundles with a specific transaction hash. But even we replay/reattach the bundle, its transactions' hash will change. I ...
73 views

### Converting bytes to trites using IOTA libraries

Most IOTA libraries (at least C#, and Java) have a Converter, that has a getTrits method. public static void GetTrits( sbyte[] bytes, int[] trits ) It has two arrays as parameters. The input,...
48 views

### Raspberry Pi3 light node initialization error

I'would like to set up iri on a Raspberry Pi3 but when i try to build i receive the following error. java.lang.NoClassDefFoundError: Could not initialize class org.rocksdb.RocksDB
252 views

### Cant log in with trinity wallet deskop on Win 10 64bit

So I generated a new Seed and now i would like to log in, but whenever I enter my password I get following error: Node returned an error while fetching your account information, change node Whenever I ...
53 views

### Sort transactions in temporal order

I want to sort transactions, within a specific tag, in temporal order. In the docs it says: timestamp : Int timestamp of the transaction. It is important to know that timestamps in IOTA are not ...
77 views

### Adress reuse with zero value transactions

If I send multiple zero value transactions from address A, containing several messages to broker a deal, is it safe to (re)use that address later on for a payment (to settle the deal)?
61 views

### Cannot start IOTA HUB

When running iota rpc hub, I am met with the fatal error E0906 15:37:44.322824 11458 beast.cc:65] [json.exception.parse_error.101] parse error at 1: syntax error - invalid literal; last read: '<' ...
237 views

### Possibility of installing IOTA on a micro-controller?

Is it possible to install the IOTA library on a micro-controller such as ESP (ESP8266)? Such that it can write in the Tangle by sending a transaction?

15 30 50 per page