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stellar-core is the backbone of the Stellar network. It maintains a local copy of the ledger, communicating and staying in sync with other instances of stellar-core on the network.

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How to implement Stellar Path Payments?

I have implemented my stellar path payments with the following parameters, but it continuously fails with an error of "Invalid parameter" . These are my parameters "source": "destination": ...
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13 views

A complete catchup of the testnet keeps failing on verifying ledger

Trying to perform a full sync on the Stellar testnet using a recent dockerized stellar/quickstart in persistent mode (horizon: v0.13.1, core: v9.2.0, docker: v18.06.0-ce). After around 10 hours the ...
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1answer
21 views

Upgrading core protocol version (docker quickstart, standalone)

I built the v10 docker image and launched it exposing the HTTP port for core. docker build -f Dockerfile.testing -t stellar:v10 . docker run --rm -it -p "5432:5432" -p "8000:8000" -p "11626:11626" \ ...
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1answer
31 views

Is it possible to submit transactions to Stellar Core directly without Horizon?

Is it possible to submit transactions to Stellar Core directly without Horizon? Or do you need to use Horizon for all interactions with the Stellar network?
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37 views

Can anyone make BiFrost working or leave Stellar as the ICO platform? [on hold]

We've hired multiple developers and there's really nobody who can make BiFrost working! Actually we've wasted so much time and money on this that we've decided not to make Stellar as our ICO platform. ...
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23 views

How stellar can ensure a network doesn't has disjoint quorums?

Does stellar maintain set of nodes to achieve quorum intersection ? If not how a stellar network can achieve quorum intersection all the time , meaning no disjoint quorums at all in the network?
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2answers
29 views

Lost ledger data: what is the proper way to shutdown and restart a node?

I had to restart Docker Engine, and I stopped the services by attaching to the container and issuing ctrl+c. It was in the process of downloading ledger files, and I thought that it would pick up from ...
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1answer
25 views

How a new node trusts another node in the network

Let's assume that a new node joined in the network.As per the SCP how this new node trusts another node in the network? Does this happens by exchanging messages between other nodes in the network ? ...
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2answers
39 views

create a stellar application without installing stellar core in local system

I want to create a stellar application which will have these functionality Account creation XLM Balance checking Doing Transaction XLM Receive notification I have read stellar documenation https://...
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1answer
21 views

Pruning and keeping disk usage low

Does the Stellar network have the concept of pruning? If so, how do I go about configuring it? I am running a node for development purposes but don't want the database and disk usage to become larger ...
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17 views

Unresolved externals

I forked stellar core project and followed all the windows installation instructions. I am facing the following issue while building the project LNK2019 unresolved external symbol "public: static ...
5
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1answer
67 views

Testing Stellar for high volume of operations per second

I'm testing Stellar for a project where we want to be able to get ~4000 operations per second. Multiple sources ( including this question's answer: Scalability on Stellar network ) indicate that I ...
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1answer
96 views

Help - why can’t I synch stellar core?

I am using the latest packaged binaries for Ubuntu - and running Stellar core (not the quick start) - with a connection to a PostgreSQL database. Two questions - 1) How long does it typically take ...
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1answer
34 views

Effects of a stellar-core node running on too slow hardware?

What are the effects of running a stellar-core node on slow/weak hardware, e.g. not meeting stellar-core hw requirements? Does that create a problem for consensus? If so, are only those affected, ...
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3answers
52 views

How to get status of historical ledgers synced after setting CATCHUP_COMPLETE=true

I had problems getting the node to resync all past ledgers and had to start from scratch. I can see that stellar-core is writing ledgers to disk, but I'm not sure how to check the status of it, or ...
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1answer
20 views

Secured ways to check if a node is up working?

To monitor nodes' healthiness, there are tools for Bitcoin and Ethereum (e.g. https://github.com/cubedro/eth-net-intelligence-api). Some of them are tools that sends heartbeats representing an ...
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2answers
24 views

Stellar Validators, Transaction fees, Inflation fees.

I've been trying to find some answer in regards to the following questions. Hope someone can help me. Because I was able to find the only unnecessary answer in regards to my questions; Why would ...
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3answers
50 views

Stellar logs are getting bigger and bigger

Stellar logs are getting larger and larger. How do you get them to print log logs according to time rules
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2answers
31 views

How do I generate an xPub using stellar SDK?

How do I generate an xPub using stellar SDK ? could anyone show me the format of a stellar extended public key ?
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1answer
75 views

How does node discovery work?

How does a stellar-core node discover its peers? I mean both on startup and on the go.
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2answers
65 views

Is there a minimal implementation of Stellar Consensus Protocol besides stellar-core?

I'm learning about consensus and I'd like to explore SCP in depth. However, the stellar-core implementation is difficult for a newcomer to grok. Is there a minimal SCP implementation elsewhere I can ...
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2answers
88 views

How to move assets from one account to another account?

I'm still newbie on developing simple app using Stellar JS SDK(node.js) and I read their docs. I've created an asset using this code var asset = new StellarSdk.Asset('USD', issuingKeys.publicKey()); ...
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2answers
97 views

Horizon waiting for Stellar-core to sync

I have built stellar-core and horizon instances from source on Ubuntu 18.04 LTS. I managed to make them work for the test-net, yet now, whilst trying to configure stellar-core.cfg for the public ...
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1answer
67 views

Can the Horizon Server be hacked?

What is the guarantee that the Horizon Server which I am interacting is actually fetching (correct) data from ledger SQL database of Stellar Core?
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1answer
55 views

Why does the high level threshold level for quorum have to be above 66%?

What is reason that the threshold of consensus bearing nodes must be above 66% for the network to operate successfully? This is straight from the docs of the stellar-core_example.cfg file. ...
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2answers
57 views

What is asymptotic security and why does Stellar, but not POW exhibit this?

One of the benefits mentioned of SCP in comparison to POW is 'asymptotic security' https://www.stellar.org/blog/stellar-consensus-protocol-proof-code/. What does this form of security mean in practice ...
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1answer
76 views

FATAL when switching from test network to public network on stellar-core

My question is about transitioning from the test-network to the public network. I am curious about whether there is a standard procedure to follow, not only in terms of configuration, but also in ...
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1answer
114 views

Securing Stellar node

I would like to know how I can secure the Stellar node from unauthorized access. I run a Stellar node (still learning) as a Full validator with the following services on the default port. Stellar ...
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0answers
18 views

Where can i find info on the meaning of each metric of the core?

stellar-core has a lot of metrics that can be accessed with /metrics Is there someplace where I can find out what each metric means? For example "herder.pending-txs.age2", whats that? I tried ...
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1answer
65 views

stellar core docker address in use

I am running stellar core docker. When I get into the container and type stellar-core. it gives this error: GAGCM [default INFO] Starting stellar-core v9.2.0 GAGCM [default INFO] Config from stellar-...
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0answers
57 views

Horizon installation errors - SIGABRT in persistent mode + no history.json file in ephemeral mode

I am working for a large corporation that is trying to implement Stellar as a payment solution. To make this work, I am configuring the back-end by setting up a Horizon instance, using the stellar/...
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1answer
57 views

Question on offers on Distributed Exchange

SOVED: I thought Test2 was buying 3 AXX, but in fact it was selling 3 XLM. Don't forget to check the ordering and meaning of parameters! I'm having trouble explaining what's going on with my bid and ...
6
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1answer
157 views

Best way to test maximum possible TPS on private network?

I have setup a private network and want to do max possible TPS(Transactions per second). Hardware is not an issue, working with GCP and can use 160 core CPU and 4000GB RAM for my machine. A few ...
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2answers
88 views

Streaming API not working?

I'm trying to enable streaming via the REST API but it doesn't seem to be working. curl -H "Accept: text/event-stream" "https://horizon-testnet.stellar.org/payments" This curl statement only returns ...
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1answer
37 views

List All Un-authrorized Truslines

I want to activate AUTHORIZATION REQUIRED and AUTHORIZATION REVOCABLE flags on my asset issuing account. How can I get list of all unauthorized trustlines after I activate those two flags? I have my ...
3
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1answer
49 views

Is it possible to fully sync Stellar node without history archive access?

The answer to this question might be trivial, since the Stellar foundation history archives might be always available, but I am just trying to understand how the full syncing works. Could I complete ...
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1answer
28 views

Constant retry to publish queued checkpoints

my goal is to host a full archive node and I started a Stellar full sync process three days ago and it is still applying checkpoints. I am getting a command line output, that Stellar is constantly ...
2
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1answer
110 views

Do I need to run Stellar-core and horizon to conduct crowdsale?

Do I need to run Stellar-core and horizon-server to conduct crowdsale ? if yes, Why stellar public horizon is not enough for this case (crowdfunding) ?
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1answer
36 views

Horizon import failed (Integer type error?)

I configured a custom docker-compose with Postgres, Stellar Core and Horizon as seperate services. Core and Horizon are running and are responsive via HTTP. Stellar-Core is running on Livenet and is ...
2
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1answer
139 views

Convert XDR to text

I want to convert the XDR fromat of the transaction to text using JS or java SDK in stellar.Or if there are any methods outside stellar also fine.
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1answer
85 views

HTTP end point error while try to run in Testnet port

I am relatively new to this stellar-core testing and this is the first post of me on stack exchange, if there is any wrong format or mistake, please tell me. I am here because I have met some problems ...
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1answer
36 views

How do I retrieve the source account, memo, and amount using python?

How can I retrieve: transaction amount memo source Account from envelope_xdr using the python sdk?
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1answer
69 views

What can cause horizon to have incomplete data?

On a private network, I have 5 core nodes and 5 horizon instances, all of the horizon services were not configured with "history-retention-count", so according to this, this variable to should default ...
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1answer
67 views

For 'txBadSeq', when is tx_fee charged?

Test Plan: The testing transactions were all "Pay 0.0001XLM", and there is far enough XLM to send. 5000 channel accounts were set up to try to prevent bad seq, but unfortunately it still happens as ...
2
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1answer
41 views

When do validators know to push the data from the latest ledger to archive nodes?

As Validators agree on the latest transaction sets to apply to the ledger when do they know to update the data being stored in the archive nodes? Is it based on the owner of an archive node listening ...
2
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2answers
69 views

Should Every Node Contain The Same Quorum Set Configuration?

Suppose I want to set up four nodes: A, B, C, D. I want A to trust B, and C to trust D, so the set is denoted by {{A, b}, {C, D}}. I want to set up a situation where either one of these sets can vote ...
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2answers
29 views

Private Testnet 404 issue

I am working on stellar private testnet setup, i have setup 3 stellar-core nodes and horizon, Account creation is working fine but data not showing for ledger, payment, transactions etc. All 3 nodes ...
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1answer
26 views

Stellar failure safety with UNSAFE_QUORUM false

Stellar failure safety is defined as n = 3f+1 <=> f = (n-1)/3 n is number of node and f is failure safety. I have setup 3 nodes with my quorum and THRESHOLD_PERCENT=67 but it is not ...
2
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1answer
204 views

Stellar Horizon not synchronizing

Background: Using satoshipay/stellar-horizon:0.11.1 for Horizon Stellar Core seems to be running. Based on logs, we get the latest sequence number and ledger: 2018-04-18T10:31:32.695 GDYMW [Ledger ...
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1answer
47 views

How does the Stellar Network prevent an actor with small quorum intersection from halting the network

I am thinking through some of the edge cases of adversaries attempting to compromise the Stellar Network. Let's say an adversary creates four consensus bearing Stellar-core nodes and runs all four of ...