Questions tagged [blockchain]

A distributed ledger of all transactions both past and present, without revealing who the funds came from or went to.

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Can someone explain me what is monero-blockchain-usage?

How can I access the monero-blockchain-usage and what is the use of it ? could someone explain after input our db what should I do ?
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Blockchain is (fully?) synchronized, but lmdb size is 1 Gb

I'm just starting with Monero. I'm using pre-installed Monero (XMR) Wallet on Whonix. My settings are: Advanced mode Portable mode enabled Local node, with location of blockchain set to a separate ...
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Is the duration of pruning roughly proportional to the size of the data.mdb file?

I have the blockchain already downloaded. I stopped monerod and restarted it with a configuration file with prune-blockchain=true in it. I started monerod again and the last bit of output was: 2022-...
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Graft blockchain

I want to make a node to mine on p2pool, but i don't want to download 100GB of the blockchain. Is it possible to skip downloading the beginning of the blockchain, like how git can graft when setting ...
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Moneros stuck in blockchain with 2400 confirmations [duplicate]

I have instructed an amount with Monero. I used the original Monero GUI wallet. Unfortunately, I had not updated it in time and then I guess my Moneros got stuck in the blockchain. Meanwhile I tried ...
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monerod fails to launch after a computer crash --MDB_BAD_TXN: Transaction must abort, has a child, or is invalid -- Failed to initialize core [duplicate]

I was synchronizing the blockchain when my laptop shut off due to problems with the power supply. After turning it on again monerod fails to launch properly. Attaching the logs from bitmonero.log 2022-...
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Converting Pruned Monero blockchain TO the full blockchain [duplicate]

Is there a way to convert a pruned Monero blockchain data file TO the full blockchain? I do not want to start from scratch.
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2 answers
137 views

Why does Monero refresh even if I use remote node?

I haven't used my wallet for a couple of months. Today I opened my wallet and it started refreshing, even if I use remote node. It refreshes about 150k blocks and it has already taken about 2 hours ...
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What is a fakechain?

The output of monerod --help and monero-blockchain-import --help show a --keep-fakechain option: --keep-fakechain Don't delete any existing database when ...
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Last 3 months of block in the blockchain are taking forever to load

I am downloading the blockchain. It's currently at 20-40 blocks loaded per minute, while I've been able to load the first 128GB in 2h, which represents 96% of the chain. There only remains 80k blocks, ...
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What is the current monero blockchain size in GB?

How can I quickly check what is the current size of the monero blockchain in GB? I want to download the Monero blockchain. But I'm not sure if I have enough free space on my disk. Before I download ...
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Fastest and easiest way of downloading a few thousand (cca. 200k) consecutive blocks

For a project, I need to download and analyze a few thousand (say around 200k) consecutive blocks with all the corresponding transactions data. I'm most interested in recent blocks. What would be the ...
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Has anyone tried storing the Monero blockchain on remote network storage?

I'm wondering about different ways that the blockchain could be stored to make it cheaper for people. Just wondering if anyone has tried running a node with the blockchain data stored remotely (e.g. ...
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Missing files when moving the bitmonero folder

I decided to move the bitmonero folder to a 256GB penstick as my hard drive was nearly full. However when I copied the folder to the new location I noticed that 2 files seem to have disappeared, ...
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How do I utilize blockchain pruning in the CLI (monero-wallet-cli)? [duplicate]

Certainly an alias or similar would suffice, but is there a better way to enable blockchain pruning? my attempt: nicholas@mordor:~/monero_console$ nicholas@mordor:~/monero_console$ ./monero-linux-x64-...
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How to connect more to the community?

We are honored to share with you our conceptual artwork of $XMR It's aspect ratio is 16:9 so you can use it as wallpaper for your smartphones. Using it is not prohibited by law and we would be happy ...
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I sent some monero to a "standard XMR" address while my wallet uses base58 format, was it lost?

The sender was having some troubles to withdraw using the base58 format, which starts with a 8. So I used this website thinking the worst that could happen is me having to manually sweep the address ...
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What's the main difference between Atomic Swap and Bisq?

I do not know if this can be a monero-related question. I have the following one: what's the main difference (or the differences) between Atomic Swap and Bisq? Bisq seems a P2P market that connects ...
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1 answer
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Why is monerod so slow on a rotating drive?

My laptop has a 500GB SSD and I couldn't spare two fifths of it for the blockchain so I plugged in a portable 2.5" HDD, altered the command appropriately and it said: The blockchain is on a ...
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Error: Couldn't connect to daemon: 127.0.0.1:18081 every single time

I'm running Windows 10 so I can't use any Linux commands which everything I've looked up has when faced with this issue. I've uninstalled and reinstalled it a few times, I've turned off my antivirus ...
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What is the 3rd and 4th value in the hardforks.cpp?

I know what the first two values are. Version and then block height. But then there is a third value with nothing then the fourth value which contains a very long number, I do not know what it means. ...
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1 answer
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Time Required for Initial Blockchain Sync

I am a beginner interested in trading and mining the Monero Cryptocurrency. I am using an Arch based Linux distribution and I have downloaded the monero-gui package from the Arch package repository to ...
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RE:Monero GUI - "Start Mining" greyed out

Excuse the noobness. I have installed Monero GUI Wallet on a persistent TAILS OS USB bootable drive. I have downloaded the Monero Blockchain and fully synhronized the Wallet and Daemon. All working ...
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Why am I unreachable?

I'm certain the forwarded port of 18081, 18089, 18080 are forwarded to the machine and i've completely disabled windows firewall. Is this my ISP blocking this port? C:\Users\monero-gui-v0.17.2.1>...
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Pass data from sender to receiver in a transaction

I want to pass data from sender to receiver in a transaction. I need to make a URI with a description field, but one that the receiver can't read. I've tried to create an old style payment ID (32 ...
1 vote
1 answer
126 views

How to back up only new blocks on blockchain using rsync

Using rsync in the normal way copies the entire blockchain to backup every time new blocks are added. To get around this, I used the --append flag, however even though the size of the backup is the ...
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Does monerod generates new block template on a repeat call of get_block_template?

I want to know if it's safe to assume that multiple calls of get_block_template rpc method will give me the same block template until the blockchain is updated. By updating, I mean the appearance of a ...
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Would It Be Technically Possible To Delete Old Blocks From A Blockchain?

From what I understand, a cryptocurrency mine needs to store a copy of the entire blockchain in order to be able verify transactions, which is why most wallet owners are not miners. The more ...
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Are the target key, k_image tx pub unique?

Are the target key, k_image tx pub unique and no repetitions in all blockchain?
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Can I store the Monero local blockchain on a Ledger Nano S?

So all I know about Ledger or Trezor is that you can make wallets from any cryptocurrency. I want to import my local blockchain once and forever, instead of getting an external SSD disk (for fast ...
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How to keep Monero daemon from crashing during initial sync?

I found that my Monero GUI wallet keeps crashing during the initial blockchain synchronization, and when I start off from where it crashed, data.mdb in C:\ProgramData\bitmonero\lmdb has been corrupted ...
2 votes
1 answer
238 views

If I update the Monero GUI, do I need reinstall the blockchain?

I'm having trouble seeing the funds in my wallet so I want to update to a newer version. However the 90GB blockchain is quite large and I'm wondering if I need to install the blockchain again or does ...
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RingCT missing output indices

I'm currently studying about security about Monero, and I found something weird. I know that the ouputs of Monero transactions are identified by amount and indices (amount 0 for RingCT), and the ...
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Monerod constantly in sync by lagging behind 2 blocks

I have been running my own Monero Node (Monerod) for some weeks now and it worked perfectly. However, today my Node get stuck in the constant sync limbo at exactly 99.9%. It was always 2 blocks behind ...
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2 votes
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What settings for ZFS dataset containing blockchain directory?

The ZFS file system allows the user to specify various characteristics when creating datasets, or even after their creation. For example: zfs create -o compress=lz4 -o atime=off zroot/data/monero ...
2 votes
1 answer
367 views

What is the difference from monero-blockchain-prune-known-spent-data and monero-blockchain-prune commands?

I'm pruning my monero blockchain, but I see there are 2 commands: monero-blockchain-prune-known-spent-data monero-blockchain-prune What is the difference?
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1 answer
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Can I quickly move my node from my Windows box to a virtualbox Ubuntu guest by making the blockchain path a shared folder?

That's. That's pretty much it. I'm just wondering if I can do this and whether it'll work properly. Just shut down the Ubuntu guest, go into the VBox manager, make the folder with the extant ...
1 vote
2 answers
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What is long-term consequence of "lost" coins?

I wonder what is the long term consequences for a digital currency with an obfuscated blockchain. Suppose some billionaire buys a huge amount of Monero coins, then dies and nobody can recover his ...
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2 answers
2k views

Where can I download the pruned Monero blockchain that is 25+ GB instead of the full blockchain

I'm looking to download the full pruned blockchain for Monero instead of syncing it and then pruning it. Where can I find this pruned monero blockchain file?
2 votes
1 answer
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Where are the input keys stored for a transaction (understanding vin field)

I am currently implementing the heuristic 1 algorithm from this paper https://eprint.iacr.org/2017/338.pdf for a university project. (pretty interesting btw worth reading :) ). My problem currently ...
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1 answer
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Where can one download the entire Oxen (Monero Fork) blockchain without syncing from scratch?

I don't want to sync my oxen network node by waiting for it to connect to peers. Is there a way to just download the entire blockchain directly from a single file?
2 votes
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Can I copy my pruned blockchain .bitmonero folder to another computer and start syncing?

After pruning the monero blockchain, can I copy this pruned blockchain from the .bitmonero folder to another computer and just start syncing from there? What are some disadvantages of pruning the ...
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transaction verification failed on monero-blockchain-import

I am new to monero. I'm running version: Monero 'Boron Butterfly' (v0.14.0.2-release) on Arch Linux I started with the following steps: wget -c --progress=bar https://downloads.getmonero.org/...
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How can I use Monero RPC via Python

As documented in https://ww.getmonero.org/resources/developer-guides/daemon-rpc.html and https://ww.getmonero.org/resources/developer-guides/wallet-rpc.html, Monero can be used programmatically using ...
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1 vote
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How can I create a million blocks in regtest or testnet?

Can anyone please tell me how to create a million blocks in regtest or testnet mode? Is there a way other than to start mining with the smallest difficulty?
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Stable coin on Tari?

Is it possible to create stable coin like DAI (Ethereum netowrk) on Tari layer? Stable coin on anonymous blockchain would be game changer!
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1 answer
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Are there any neat tricks to enable SPV like functionality for Monero?

I think one of the biggest things holding Monero back from a user experience standpoint is the need for every user to download a large subset of information each time they want to check their balance. ...
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1 answer
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Monero fork: block creation time fluctuation

I am running a Monero fork(v7) for the past 4 days. I have set the block creation time as 2 minutes but sometimes the blockchain takes more than 30 minutes to create a block. Is this normal behavior? ...
1 vote
1 answer
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At what dates did the Monero blockchain version update?

I want to download the v1 and v2 versions of the Monero blockchain for experimental purposes, but since I don't know when the blockchain upgraded from v1 -> v2 and v2 -> v3, I don't know which node ...
2 votes
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Where and how to start to understand Monero?

I'm a newbie and I would like to know more about Monero and the technology behind it. What is a good starting point to learn more about Monero? Website, wikis, books? Thank you so much for answers.
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