Questions tagged [stellar-core]

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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stellar horizon docker install error -history-archive-urls must be set when --ingest is set

I'm trying to install stellar core and horizon via docker: and I get this error when start horizon_1 | 2020/05/26 23:50:15 --history-archive-urls must be set when --ingest is set $ docker ps ...
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How to custom stellar-core.cfg on docker quick start?

I would like to change NETWORK_PASSPHRASE information in the stellar-core.cfg for my standalone network in order to get the new private seed for the genesis block. I managed to edit the file but when ...
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Stellar full sync

I want to have full stellar history, but I can't. Please tell me what am I doing wrong? I am trying to make full sync of Stellar test network. I have been trying to make several changes in the ...
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Failed to parse 'stellar-core.cfg' Must specify a matching HOME_DOMAINS for self

I have setup the home doamin got node account. and specify the account in toml file but still getting the following error. "Got an exception: Failed to parse 'stellar-core.cfg' :Must specify a ...
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Transfer XLM from Stellar Expert account to Nano Ledger wallet? [duplicate]

I tried using the staking opportunity and ended up transferring XLM from my Nano Ledger wallet to a Stellar Expert account. How do I transfer the XLM back to my Nano Ledger wallet?
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154 views

Timeout after 6000ms after submitting a transaction

Whenever I submit a transaction I get a timeout error (after 60 secs). The server is a docker quickstart image in standalone mode. To solve the issue I am have to run the image with -e LOG_LEVEL="...
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1answer
18 views

xdrc 'cpp.exe' is not recognized as an internal or external command

I am trying to build stellar-core on Windows. I have followed the instructions in the windows install markdown but I am getting the error below. Error MSB6006 "cmd.exe" exited with code 1. stellar-...
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62 views

How to setup an anchor in Stellar network using Windows?

While there is a great deal of documentation on installing the packages, however, I couldn't follow it properly to install the stellar-core, horizon and Postgres database in windows. There is not ...
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Stellar Private Network: Waiting for ledger to be available in stellar-core

I have launched Private Network by tutorial https://github.com/stellar/packages#sdf---packages and published full validators. I can't understand where my mistake and why I see ledger version = 0 ...
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Getting tx_not_supported on steller-core prod v1.15.0

I am getting tx_not_supported when submitting a transaction. I have compiled at stellar-core prod branch and launched a network. I am able to use the horizon and see the root account. However when ...
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Stellar Core Stuck at Catching up or Joining SCP

I'm trying to get a basic version of Stellar Core setup in Docker using the stellar/quickstart image. One of the problems I'm running into tho is that the state is stuck at Catching up or Joining SCP....
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How to set the price to my own new asset?

Good day I have created the my own new asset in stellar public network. I'd like to set the price to my asset. for example, it should be 50 USD. How to set the price to my asset? OR other methods? Any ...
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186 views

Stellar-core not syncing on testnet after restart. Missing Buckets not being retrieved

After attempting to restart a stellar core node I had running on the test net I got an error, and when I tried to run stellar-core (inside docker container) with stellar-core run I got the following: ...
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1answer
261 views

What are the good configurations for having a running cluster of 3 nodes?

I am trying to set up a private stellar cluster with at least 3 nodes. I am able to setup a 2-nodes cluster but when it comes to add another node, the cluster is broken and only one node is synced. ...
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2answers
128 views

Own stellar horizon is not showing data prior to own instance launch date

I run a stellar node using the docker quickstart image and due to some syncing error the underlying ec2 instance was terminated and restarted on 2018-12-28T10:45:19Z, state of core is Synced. ...
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1answer
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How to regenerate Stellar Archives?

We are running a private stellar network and we are seeing missing archives files. Can the network regenerate the archive files? New nodes are not able to synch because of this.
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1answer
135 views

Stellar channel implementation is giving an error “this.source.sequenceNumber is not a function”

i am trying to implement stellar channel concept. i am following stellar channel link. I have created 6 channel accounts. Below is the programme i wrote var destinationId = '...
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Been gone a while, can't find my XLM

It's been a few years since I bought onto Stellar, I thought I would check how things are going. Turns out all I can find is my account address (doesnt show up on stellar.expert), and a secret key. ...
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stellar-horizon db size

maybe someone could help me. I have a node with the config below: CATCHUP_RECENT=362880 # approximately 3 weeks (5sec per ledger closing) - stellar HISTORY_RETENTION_COUNT=362880 # ...
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If the Hub Server ever went down

I would like to use Public Lumens in a Project I need to make for transactions. As I'd like the Lumens to have value outside my App. But at some point in the future horizon.stellar.org will go down or ...
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Is having hashes of document certificates in Stellar possible for tamper proof use case?

I have a application where I want to store a SHA256 hash of a document in a blockchain so that it remains immutable. I want it to have a good life, like storing the SHA256 hash as a data in a ...
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1answer
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Error while installing stellar core

I am trying to follow this tutorial in order to build a private stellar network. And I am still trying to install stellar-core. When I run ./configure, this is the error I get: ./configure: line ...
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Private Network using Stelllar-core

I have launched Private Blockchain using latest stellar-core and add inflation also and whenever testing inflation using stellar-sdk then facing following issues:- result_codes: {​​ transaction: '...
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stellar-core upgrade from version 12 to version 15.0.0

I am running a stellar private network with core version 12 and horizon version 20.0.1 Now I need to upgrade the core and horizon both from core version 12 to 15.0.0 and horizon 20.0.1 to 1.11.0 . In ...
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it possible to impose another asset (non-native) as a transaction fees

I want to build a standalone application (on my own network). The objective is to exchange different types of assets. Here is my question my question. Is it possible to impose another asset (non-...
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const pair = StellarSdk.Keypair.random(); ^ ReferenceError: StellarSdk is not defined

when ever i try to run this code // create a completely new and unique pair of keys // see more about KeyPair objects: https://stellar.github.io/js-stellar-sdk/Keypair.html const pair = StellarSdk....
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What copyright notice should be included to the software built on Stellar?

If the Stellar core was forked and changed, and some software like digital wallet was built on top of the resulting private blockchain, what notices should be mandatorily included with this software (...
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1answer
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How to configure native currency in a private network

I would like to know how we can configure the native currency in a private network? I would like: Change the name of the native currency Change the number of native currency created in the first ...
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2answers
131 views

How can I validate a stellar address in Python?

I am using python-sdk to perform stellar operations. Now I need to validate a stellar address. I know that the JS sdk has got a function StrKey.isValidEd25519PublicKey(address); however I cannot find ...
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How can a node safely apply its externalized state while still allowing late commit messages?

Consider a case with Qset { N: 6, Threshold: 4}, 6 nodes and a threshold of 4. If a Node has received 4 commit confirmed messages for a ballot b then it is safe to act on it - as an example by ...
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1answer
32 views

SCC: why are there 2 SQL files?

The SCC (Stellar Core Commander) is a tool used to generate a "state" for Horizon's tests. When I run it against an .rb script, it generates a single .sql file - essentially a 'pg_dump' of the sql ...
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1answer
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Is it possible to recreate the history from stellar-core?

We have a private stellar network and for some reason the archive is corrupt and a new node cannot get the history. Is there a way to recreate the full archive from stellar-core?
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1answer
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What is the difference between SCP and FBA?

The Stellar white paper "presents federated Byzantine agreement (FBA), a model suitable for worldwide consensus." It then goes on to state that it "further presents the Stellar ...
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Do I need to create and back my own USD token, or are there more distributed approaches to bring USD into my Stellar based app?

I'm transitioning my purely XLM based app to having USD as a deposit, exchange or withdrawal option. Once the USD is deposited, I'll issue a USD token to track that value. How should the exchange on ...
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How to setup the first account in a private network?

Hi have setup a private network. Now how do I create the first account so I can start using the network? I have tried the following: const Stellar = require('stellar-sdk') const NETWORK_PASSPHRASE = &...
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1answer
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Is a network of non-validators really necessary?

From my understanding, stellar-core nodes (i.e., including watchers and validators) will arbitrarily connect to other nodes by default (i.e., no preferred peers set). While it makes sense for watcher ...
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Making a horizon account request with http_request?

I am trying to make a request for account data using stellar-core's boost/asio HttpClient. //https://horizon.stellar.org/accounts/GALAXYVOIDAOPZTDLHILAJQKCVVFMD4IKLXLSZV5YHO7VY74IWZILUTO std::string ...
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2answers
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Stellar-core catch up failed

My stellar node stop syncing with such error: 2020-01-15T05:43:46.809 GAES7 [History DEBUG] Verifying ledger headers from /mnt/volume_lon1_01/buckets/tmp/catchup-425e2f74558fb272/ledger/01/a7/8a/...
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Stellar core Bad ledger-header history entry: claimed ledger

Stellar Core v13 stopped validating a few days ago. Unfortunately, I don't have the old logs anymore so I don't know what happened exactly. I can see there's an error in the core logs: 2020-06-08T17:...
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How accurate are Stellar timestamps in practice?

As described in How are timestamps deemed invalid?, it seems that the code enforces two checks on timestamps: monotonicity: the close_time of each block must be greater than the previous close_time ...
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“ingest_latest_ledger” and “history_latest_ledger” freezes, though “core_latest_ledger” increases

I am using "docker-stellar-core-horizon" on Ubuntu-18.04, RAM -16GB (I have also tried the entire thing on CentOS-7, please provide a solution that works for both Ubuntu and CentOS). Docker version- ...
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1answer
110 views

horizon ingest the historical data

I'm running a new horizon v1.2 with ingest=true. It is connected to the stellar core with CATCHUP_COMPELTE enabled. (the status of the core is catching up 5%) My question is what is the command to ...
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How do i build a fiat payment processor(Gateway) on stellar

I want to develop a payment gateway that can be integrated into online stores, merchants can seamlessly receive payments directly to their bank account. I want to build all the features on stellar. ...
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1answer
35 views

High available stellar core

I'm looking for a way to run a high available stellar validator core. Right now I run one stellar connected to Postgres DB in a k8s pod. My question is if I want to for example run 3 nodes do I need ...
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Root account balance about my own private network and connect with stellar network

I have set up my own stellar private network and the root account balance of that network is 100B. This is because as per my knowledge in the stellar-core source code the root account balance is ...
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1answer
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Hand code a stellar transaction

I know how bitcoin transactions are built 4 Bytes version & 1 byte number of inputs ...etc similar to this how is stellar transaction built and signed ? Please help me find that information ? ...
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1answer
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Why is validator inactive on Stellarbeat despite logs showing validation activity?

I am trying to run a validator, and have configured it accordingly. I am running version 12.4 on an Ubuntu machine, which I installed using the stellar-core-postgres packages. According to stellar-...
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1answer
14 views

Stellar HD Path require apostrophe in the end?

I was recently going through some code and came across something new to me. The HD Paths for all the assets I saw ended with /0 but specifically for Stellar it ended with /0'. The complete form: m/...
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1answer
310 views

How to connect to a stellar stand alone node?

My goal was to set up a small test network with two stellar nodes. Therefor, I forked the quickstart repo and made some small adjustments. I changed the public key and the network passphrase. On my ...
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1answer
120 views

Run core with catchup complete

I have a new stellar core instance with CATCHUP COMPLETE true and one stellar horizon instance with INGEST true. I'm totally new with stellar. I've started the core node and it's catching up the data....

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