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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How to get missing slot/ledger?

I am trying to get missed ledger/slot envelopes. There is message GET_SCP_STATE. But after subscribing I am not receiving the message about new envelopes. Do you have any suggestion how to get last ...
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History: Bad ledger-header history entry

I am running a stellar private network which is my own network. It is working fine for firing the transaction. But I have found that if I want to send transaction for particular some of accounts ...
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Best practices for setting up an Stellar archiver node

I'm trying to setup a Stellar archiver node. My goal is to be able to query any historical data for (e.g. ledgers, transactions, balances etc.) at any point any time and looks like the way to ensure ...
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Stellar postgres errors: canceling statement due to user request

I am using Stellar (mainnet) and after latest update got errors in postgresql: canceling statement due to user request UTC [64] STATEMENT: delete from history_assets where id IN (select id from (...
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Can't find Horizon X-RateLimit-* headers

I found a lot of discussion on how rate limits work, ex: Did Stellar's public Horizon Server Changes its rate limit? But I can't find X-RateLimit-* headers in any of the responses, ex: curl -i ...
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How can I claim or refund expired claimable balance?

If any wallet have expired claimable balance, how can be proceeded? If not proceeded, reserves will be remaining for sending address Are there solving methods for it? Thanks for advance
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How can i query the version of the node using the API?

I want to know the version of a node using API that can be called externally over the network(rest, etc, excluding cli). I know I can use the CLI to know the version, but can't I use the API? Any ...
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How to restart after changing memo size in stellar-transaction.x

Trying to run a private network and need to store some data of an activity in memo field, by default the size is 28 bytes, I have changed it to more than 28 so that I can include the data. After ...
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Is it possible to set the speed of transaction in Stellar

Can I speed up my transactions based on the fee I am willing to spend? Or perhaps by some other means? Is there a way to choose between slow, medium, and fast (like on other blockchains) or is there ...
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Creating Trust line in Go

I am struggling to set a Trustline. Create account Send Funds to New account Set Trust for a Token Send the Token. I am having a big problem trying to get step 3 working, many online examples are ...
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What is the key format of a public key?

The documentation ( https://stellar.github.io/js-stellar-sdk/Keypair.html ) just describes what algorithm is used at the core. But that algorithm produces bits. What encoding is used on these bits to ...
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I Working around Stellar Multisig and I am getting

at Function.setOptions (C:\Users\user\Desktop\multisig\node_modules\stellar-base\lib\operations\set_options.js:137:13) at setMultisigOnEmekaAccount (C:\Users\user\Desktop\multisig\multisig.js:30:...
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remove token from wallet - transaction blocked by issuer

I've got a fishy token in my wallet that I can not remove or send to anybody, because the issuer has blocked my account for sending this asset. How do I get rid of such assets? My XLM are blocked and ...
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Do you need a license to build a remittance product on Stellar

Do you need a license to use stellar network to build a remittance product or integrate a stellar supported wallet.
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Transaction not supported

I configured a private Stellar blockchain network composed of 2 nodes. When I try to create an account on this private blockchain I get the following error: stellar_sdk.exceptions.BadRequestError: { ...
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How to create Stellar Muxed accounts using java-stellar-sdk

How to create Stellar Muxed accounts using java-stellar-sdk-0.31.0.jar, I want to create Muxed account with id 1 from custodian account GBMHTX6VOIIS4FNQSMTSWVHCMVCJXTTNXTIY3SBXI5K4NLDCTV5CJLZE ...
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Ledger, slot and block difference

I'm not understanding the real difference between this 3 concepts: Block Slot Ledger If I'm not wrong a ledger is a snapshot of the entire blockchain and a slot is similar to the concept of block of ...
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How do I access which gateway by BTC is in from my stellar wallet

When I upgraded to receive my new stellar lumens from the old network I am greated with the below, how can I access the information on which gateway it is? You still have: 0.0072058195 BTC issued by ...
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Stellar core 2 validators setup stuck in "Joining SCP" state in standalone network

I'm trying to deploy and run 2 validators in the standalone network using the stellar quickstart docker image. The issue is that the nodes can't seem to find one another even though I'm able to ping ...
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stellar core upgradation issue

I have upgraded my stellar private network core version 15 to 18 and it is synced. Now I am trying to upgrade my horizon 1.11.0 to 2.12.0 and I have configured captive-core.toml file for my private ...
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Stellar Captive Core For Private Network

I have set up one stellar private network. Now I want to connect horizon with that private network core in captive mode. So that I have create one stellar-captive-core.cfg file as below [[HOME_DOMAINS]...
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How would I go about implementing the Stellar Consensus Protocol?

What good resources exist on the implementation of SCP? there are plenty of papers on the mathematical details, and plenty posts on the high-level goals, but I've found next to nothing about the ...
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Where in the code is it written that Stellar public addresses must start with G and private addresses with S?

I have been going through the code of stellar-core but unlike Bitcoin and Litecoin I couldnt find anything like base58.h. So I searched through the folder with many types of keywords but couldn't find ...
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Stellar-core multiple instances

I am planning on running 3 stellar core instances for high availability purposes. My question is, do I need to have separate db for each core instance? Same for buckets as well, I am assuming buckets ...
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Actual blockchain size

What is the approximative current size of the entire blockchain for the 3 types of nodes: Basic Validator Full Validator Archiver
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Duplicate node found in quorum in testnet

2021-12-29T16:26:44.500 [default FATAL] Invalid QUORUM_SET: Duplicate node found in quorum configuration 2021-12-29T16:26:44.500 [default FATAL] Got an exception: Failed to parse 'stellar-core.cfg' :...
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Issue when running localhost for stellar wallet tutorial

I'm currently working through the build apps stellar wallet tutorial, but I've run into a snag. I don't think its necessarily an issue with the stellar sdk, but rather with stencil.js. When I run the ...
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How to recover an old Stellar account?

I have tried to recover the account at https://launch.stellar.org/#/recovery with a username and recovery code, but I get the following message: Recovery disabled. Account can't be recovered by ...
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What API to use to get metadata of asset issuers?

I am trying to get the metadata (such as organization name, logo) of asset issuers in the Stellar network. What API should I use that could possibly contain this information when I pass the Public Key,...
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Standalone network error: tx_not_supported

We have built a Standalone Network with 3 Stellar nodes as full-validators and horizon. Every node and horizon run the 18.0.4 version in a docker container and can access node's history thanks to ...
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Cannot initialize S3 history archive - unable to locate credentials

I am trying to initialize an S3 bucket as history for stellar core using this command: stellar-core new-hist s3 this is my [history.s3] config: [HISTORY.s3] get="aws s3 cp s3://mybucket/history/{...
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Liquidity Pool Deposit Operation Min/Max Price?

Does anyone know what the Min/Max Price parameters on the Liquidity Pool Deposit operation do at a conceptual level? https://developers.stellar.org/docs/start/list-of-operations/#liquidity-pool-...
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How can Stellar timestamps be manipulated, and how accurate are they in practice?

Stellar can be used for Trusted timestamping via e.g. the STELLARAPI.IO. As described here at How are timestamps deemed invalid? it seems that the code enforces two checks on timestamps: monotonicity:...
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How to reserve a transaction sequence number?

I have a multisig account and need to initiate a transaction for set option operation. So prepared a transaction which will be expired in 7 days and within this time all (3 out 3 signers) has to sign ...
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Performance issues ingesting historical data with stellar-horizon

We are trying to setup a captive core with Horizon API server with historical data as far as block 28960000 (since our token got used since then). Installation and initial sync went smooth but ...
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Timeout when submitting tx to the blockchain

I have running stellar core and stellar horizon together. Sometimes (recently even more) I am receiving such a response when trying to push tx to the blockchain. How could I approach this issue or ...
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How to ICO for tokens based on Stellar blockchain?

How an ICO can be initiated? Shall we write a smart contract for it like in ETH network? We want to have the following parameters on our ICO: Token rate, hard/soft cap tokens, start/end date, minimum ...
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Captive mode doesn't work

stellar-core: 17.3.1-666.97aeb24.focal stellar-horizon: 2.7.0-133 https://developers.stellar.org/docs/run-api-server/migrating/ I'm use private network with 3 nodes and try migrate. If I disable ...
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How to stop evergrowing disk usage by Stellar node

Disk usage is growing steadily and we cannot find the solution. There are two questions from about 2-3 years ago: Stop Horizon/Stellar node growing disk usage Pruning and keeping disk usage low But in ...
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The question about when trying to submit transaction with high sequence

I have a question about submitting transactions with high sequence. Say Account 'A' has a sequence of 100. When I tried to made a raw transaction with signing and submitted from account A with ...
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Linking 3 Validator nodes - Javascript SDK

I'm attempting to ling 3 validator nodes - with the objective of becoming a Full Validator. I'm performing this operation based on the Link Validator requirements as described on https://github.com/...
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I wanna my private blockchain network with stellar

I wanna my private blockchain network with stellar but it's not working here is my configure # What port stellar-core listens for commands on. This is for Horizon server. HTTP_PORT=11626 ...
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Kubernetes, specify network and health check

I'm trying to run Stellar in Kubernetes. Initially I'm working with the quickstart (stellar/quickstart:latest). The problem I'm facing is, when specifying the network via an explicit command and args ...
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Is there a browser-based client-side version of freighter-api?

Is there a browser-based client-side version of freighter-api, so it can be used without installing on the server? For example, web3.min_1.36.js can be used as a script tag in an HTML file that is run ...
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Difficulty installing stellar-quickstart on Ubuntu 20.04 LTS

As the title suggests I'm having some difficulty installing stellar-quickstart via packages. my system details: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: ...
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Running Multiple Stellar-core Instances on One Server

If your server quadruples the system requirements for running a Stellar-core node, can you run multiple instances of the software at the same time on one bare-metal machine? If you use a NVME or PCIE ...
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Catching Up Stellar Core Not Completed in a Long Time

I'm trying to run the stellar core and the horizon on my server using stellar/quickstart docker image. It's been a week since I started and it didn't synced. On the configuration file stellar-core.cfg,...
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Change Network Passphrase - Quickstart - Persistent - Docker

I am trying to change the network passphrase for stellar. I am using the quickstart docker image and launching in standalone mode. command: docker run --rm -it -p "8000:8000" -v "E:\...
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When to use multiple nodes in a private network

I cannot understand when it is necessary to use several nodes, as I understand on two nodes the system will be more secure. Should I use multiple node in a private network Stellar?
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How do I set up a full validator on the test network

I am trying to learn about Stellar-core by configuring a full validator on the test network. Using sample configs and input from this post, my config looks like: BUCKET_DIR_PATH="/var/lib/stellar-...
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