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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1answer
14 views

Where can one download the entire Loki Network (Monero Fork) blockchain without syncing from scratch?

I don't want to sync my loki 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?
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1answer
37 views

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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1answer
32 views

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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2answers
101 views

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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1answer
70 views

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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26 views

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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1answer
63 views

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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1answer
60 views

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? ...
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1answer
46 views

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 ...
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0answers
12 views

Can I copy the Windows C:\ProgramData\bitmonero folder to my linux ~/.bitmonero folder to be used with Monero gui? [duplicate]

I have the bitmonero monero blockchain fully downloaded on windows. Can I just copy this folder to my Linux ~/.bitmonero folder? Are the files the same and interchangeable?
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1answer
37 views

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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0answers
55 views

Monero GUI is unable to finish the synchronization

The Monero GUI (updated) suddenly stopped synching and stuck on the last 30 blocks or so. Here the log: https://paste.fedoraproject.org/paste/uguNJ3qVqHmdvFvpc-vyOQ What can I do to solve this ...
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1answer
38 views

What is the block height from which RingCT was implemented?

Can we know the block height from which the ring signatures were implemented. Because i read few blocks which are pre-ring signature blocks where I see there are ring members repeating for a single ...
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1answer
30 views

Can an output public key appear more than once in the blockchain

The output public key 9b2e4c0281c0b02e7c53291a94d1d0cbff8883f8024f5142ee494ffbbd088071 appears in the the following blocks: https://moneroblocks.info/search/...
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1answer
78 views

Go or Rust library to use Monero

Is there any library for Go (Golang) or Rust that I can use in order to generate the key pair, manually build a transaction, sign it and broadcast it to a remote node? I searched GitHub and either ...
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1answer
48 views

How does the miner know the public key for the signature in the block?

When a block is being processed by the miner he has to verify the signature by using the public key. How does the miner know about this public key? Is it included in the block data?
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1answer
70 views

Global index of output

Can anyone please tell me, is there a way to find out the future global index of the output that is currently in the tx pool?
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0answers
72 views

Maximum optimal transaction fees and max transactions per block after bulletproofs upgrade?

After the bulletproofs upgrade. Fees are in theory going to be cheaper as the blocks get full. What is the optimal fee if we assume the blocks do get full? How much would fees be then? And how ...
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1answer
24 views

Questions about tx_description field in URI

In the Monero URI, is the tx_description stored on the blockchain? If so, is it encrypted? What is the maximum length of this field?
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1answer
58 views

We are quite new into Cryptonote technology! We are looking for a web wallet!

https://github.com/mybtcfx/4xbitcoin This is our coin based on CryptoNote. We have made our coin and started mining as well. We have also worked onto our block explorer !! Now ae are looking toward ...
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1answer
48 views

When does validation of blocks occur

At what point does a miner validate blocks shared and created by other miners on the blockchain?
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1answer
1k views

Monero blockchain size requirements

I am thinking of running a local node, and I was wondering how much space is needed. I know that the current blockchain size is less than 50G. I heard that implementing bulletproofs will ...
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2answers
53 views

Is there a way to make a public message where anyone can see on the monero blockchain using payment ID?

I'm assuming payment IDs are viewable publicly. Is there a way to encode an ASCII message in the payment ID and make it viewable publicly on the blockchain?
3
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1answer
227 views

How to check balance of monero paper wallet from nodejs?

I'm taking address and viewkey as input then want to return its balance in my expressjs project. How to call monero blockchain from nodejs for checking balance of any paper wallet?
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1answer
25 views

What do I need to change/add in order to add a field to the block struct?

I'm trying to add a field to the block struct, and want it to be serialized just like the miner_tx and the tx_hashes (like FIELD(new_field)), because the block parsing is failing for me with my code ("...
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2answers
21 views

Do all blocks that end up in the main chain pass through handle_block_to_main_chain at some point?

Do all blocks that end up in the main chain pass through handle_block_to_main_chain at some point (even during reorgs?)
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4answers
68 views

How can I check if a transaction is mined into the blockchain?

How can I check if a transaction is mined into the blockchain ? How much time does it take for this if the transaction is less then 1000$ ?
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1answer
82 views

How to buy monero for cash?

How to buy monero for cash ? I meet with the seller, then give him cash and send him my wallet address using some messenger. Then he using a laptop or smartphone send xmr to my address. How much time ...
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0answers
689 views

Torsocks server failure when running monerod with Tor on Tails

I'm trying to run the Monero daemon (monerod) v. 0.12.2.0 with Tor on Tails 3.7.1. I'm doing exactly what is written here: Medium - Sheep’s Noob guide to Monero GUI in Tails 3.2. Basically: Download ...
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1answer
190 views

Monero blockchain explorer compilation not working ubuntu 16.04

Hi I am working on monero blockchain explorer, Trying to work with this git repo. I have tried too many times but unfortunately couldn't get success yet. Right now I am facing this error. CMake ...
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1answer
46 views

Monerod finished syncing but now never catches up in GUI wallet, monerod still syncing

I'm using Windows 7, 64 bit, on a crummy burner laptop. So monerod finally finished syncing last week and I followed advice here and opened the GUI wallet, it was all syncing together as it should but ...
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1answer
94 views

Why are there transactions in the Mempool that are invalid or over 50 hours old?

Checking xmrchain.net I noticed some very old transactions in the mempool. The oldest is over 70 hours old. It has a ringsize of 5 - how is that even possible? Are transactions not validated before ...
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1answer
40 views

Can you only allow certain miners on a cryptonote blockchain?

I am creating my own Cryptonote coin for a specific, business need. Can I only allow certain IPs to mine on it?
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0answers
24 views

Orderd Monero before update [duplicate]

I bought monero before the update. And did not receive them. After i updated the wallet gui they still didnt appear. What can i do? If theres somene german speaking please explain it to me in german. ...
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1answer
690 views

Where can I download the entire Monero blockchain in one shot?

Monero syncing via the daemon can take days/weeks. Where can I download the entire 50GB+ monero blockchain from a fast connection?
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1answer
78 views

Which is the more reliable coin after April 2018 network upgrade?

As far I understand monero is now divided as monero and monero classic/original/0 . So which is the more reliable coin? I do have a linux node in which an old version of monerod was installed. To ...
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1answer
91 views

What is the block header's minor_version for?

Minor version is one of the 5 fields in Monero block headers. The answer here What is the format of a block in the Monero Blockchain? says "uint8_t minor_version; // now used as a voting mechanism, ...
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1answer
77 views

Where to find the Monero blockchain by itself?

as many of you know it takes a huge amount of time to sync-up to a full Monero node. So what I want to do is download the blockchain(or at least most of it) so it is much quicker; and then point that ...
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0answers
397 views

blockheight unconfirmed

I'm using the new GUI and made a deposit on it from an exchange. 32 hours ago it was approved from the exchange. Since then i'm waiting to see the amount on my wallet. I can see it in the history, but ...
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1answer
503 views

Does using a remote node provide risks to anonymity?

If I were to use a remote node for monero GUI (latest version), would I risk privacy issues? If so, what can be done to minimize these issues? Thanks in advance.
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1answer
1k views

Why does the option “--verify 0” for monero-blockchain-import not work?

When I use the command ./monero-blockchain-import --verify 0 --input-file ./blockchain.raw it says "Failed to parse arguments: unrecognised option '--verify'".
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1answer
127 views

Do I need to redownload the Aeon blockchain for the rebased software?

I have a legacy v0.9.14.0 aeond running, fully synchronized. When I install the rebased software, will I need to redownload the Aeon blockchain from scratch, or can I convert the existing blockchain ...
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1answer
1k views

Which directory does monero-blockchain-import, by default, use to store the imported blockchain?

I am not sure if this makes sense or not. I was using an old version of the Monero GUI and I was stuck at block 140001. I thought it was a sycning problem so I downloaded the raw blockchain from ...
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1answer
248 views

Where can I find the POW hash of blocks?

I want to find the POW hashes of each block, which start with or end with many zeros. This answer showed an example of the POW hash. I tried many blockchain explorers and didn't find any one with ...
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0answers
38 views

Why have i lost my monero money? my wallet is fully synched and no sign of it [duplicate]

I sent monero to my monero wallet and hasn't appeared yet. I used a payment id even when I didnt have to. The money is nowwhere to befound. I located the blockchain height it is confirmed at 1,0523,...
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2answers
111 views

Duplicate output keys

Output keys are 256 bits public keys. They should be unique. Are there any duplicate output keys ? What happens if there is any ? Is it a double spend ?
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0answers
95 views

How can one check the blocks found on PPLNS pool, such as xmrpool.net?

I've been mining to xmrpool.net for a few months now. Their dashboard has had a couple of bugs but has otherwise been good. It used to average about 2 blocks found per day and now nothing for 6 days ...
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0answers
34 views

How fast can a 16 core threadripper rescan your monero address for an updated balance?

Does anyone know how fast a 16 core process threadripper rescan the monero blockchain for an updated balance for an address? Currently for a 2 core processor it takes a few hours for me. I'm ...
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1answer
175 views

RPC method to translate key_offsets

This SE answer explains the "key_offsets". Is there any RPC call to translate theses offsets to their matching outputs ?
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1answer
65 views

Distribution of number of inputs and ouputs per transaction over time

How does the distribution of the number of inputs/outputs looks like currently ? How did it evolved ?