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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
16 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
36 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
35 views

When does validation of blocks occur

At what point does a miner validate blocks shared and created by other miners on the blockchain?
3
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1answer
46 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 ...
2
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2answers
30 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
62 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
15 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
17 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?)
2
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4answers
41 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
51 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 ...
2
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0answers
174 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
102 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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0answers
28 views

How do i run a daemon in snipaa node-js pool

Hello i want to run a mining pool for various coins for bytecoin, Karbo, Bitsum, Dero and Digital note. but i can't find the import link of their particular blockchains like i found for the monero "...
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0answers
45 views

daemon (local node) does not synchronizes

I just created a new wallet, because my old one did not work and it says this whenever I want to start the localnode: Please check your wallet and daemon log for errors. You can also try to start ...
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0answers
46 views

daemon (local node) Stops synchronizing After a few seconds

i want to connect my GUI wallet to a local node and I did it already once, but when I want to synch it again it just stops after a few seconds in the process without giving me any explanation or error ...
0
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1answer
32 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 ...
1
vote
1answer
62 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
31 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
23 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
173 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
74 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 ...
2
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1answer
51 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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0answers
88 views

Wallet chain in a corrupted state, how can I recover? [duplicate]

I have been wrestling with this issue for the last 8 hours.I wanted to transfer all of the funds from one wallet on one host to another wallet on another host. Both machines are running the new ...
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1answer
68 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
326 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 ...
4
votes
1answer
276 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.
2
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1answer
116 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 ...
3
votes
1answer
671 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 ...
2
votes
1answer
176 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
37 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,...
2
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2answers
93 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
121 views

Why does monerod --detach return a differant block height than just running monerod?

I have monero installed on Raspbian on a Rpi3. I added monerod --detach & to the end of my /etc/rc.local. The result is that monerod --detach runs at boot, however it returns a differant block ...
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0answers
86 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
32 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 ...
3
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1answer
101 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 ?
2
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1answer
54 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 ?
6
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1answer
130 views

Possible lengths of Monero addresses?

I'm doing crude client-side verification of a form that includes an input for a Monero wallet. What are the possible lengths of an address? Are 106 and 95 the only possible lengths?
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0answers
68 views

Please check your wallet and daemon log for errors. You can also try to start monerod.exe manually [duplicate]

I send this amount around 40 days earlier but still not credited to beneficiary address. Could you please tell me what is wrong with this transaction.? 2nd questions. # This address received 940.....
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2answers
1k views

Best method of speeding up Monero downloading / syncing of the xmr blockchain?

My node is 8000 blocks behind, and its taking quite a while to sync. Is there a faster way to sync / download the Monero blockchain?
1
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1answer
35 views

Can you input the blockchain through remote web server?

So I am trying to import the blockchain onto my VPS, however, my VPS has a low amount of storage. I am hoping to import the blockchain using monero-blockchain-import, so is it possible to load this ...
2
votes
1answer
475 views

Monero setting up a testnet wallet in terminal, can't sync

I am currently running Ubuntu 16.04 server with monero-v0.11.1.0. I successfully downloaded the live chain without problem. When I tried to download the testnet chain I get over and over: 2018-01-...
1
vote
1answer
100 views

Was the reasoning behind the large tx extra in minergate's transactions ever revealed?

It's absolutely enormous. Was it revealed why it's used? This is a Minergate block: http://explore.moneroworld.com/tx/bba343e5e172f07f623fb34c0cbd26519567cc374c5d61d468d370714f3d5b66 This is a ...
0
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0answers
196 views

Connecting Daemon Through Tails

Currently trying to connect the monero daemon through the tor network on Tails, and I'm having trouble getting any connections to and from my daemon. I've been following Sheep's guide and am still ...
2
votes
1answer
145 views

Can I copy the .bitmonero folder?

I'm wondering: can I save a copy of the hidden .bitmonero folder that contains the blockchain and keep it on my computer, and if my blockchain gets corrupt can I just erase the corrupt one and copy ...
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0answers
35 views

XMR not showing and more issues [duplicate]

Last week I tried to start the GUI. It wouldn't start did some research here and found out my blockchain was corrupt. BTW this is almost 2 weeks ago. I erased my blockchain and started resyncing. ...
1
vote
1answer
117 views

Radeon Blockchain Drivers not Installing on Vega 64

I was trying to install the AMD Radeon Beta Blockchain Drivers onto my RX Vega 64 Liquid GPUS. The screen flickered, as it always does during a display driver install, but after my screen went black ...
1
vote
2answers
772 views

What happened at Monero difficulty from Nov 2017 to Jan 2018?

During latest days of November 2017 Monero difficulty, according to this chart, was around 30G and now is around 80G. What happened to it? And what should we expect for the near future?
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1answer
127 views

If I re-sync the blockchain will I lose my coins and wallet address?

I had a hard reset and now I'm getting the following error "Daemon fails to start." Both with the GUI and command line. The GUI still displays my coins and wallet name. Looks like I need to re sync ...
1
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1answer
103 views

Failed to update txpool transaction metadata on local Monero daemon

I have a Monero daemon running on a Raspberry Pi connected to my LAN. After a full blockchain sync, I got this error: 2018-01-16 12:00:50.993 [P2P0] ERROR txpool src/cryptonote_core/tx_pool.cpp:...
2
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1answer
2k views

Monero wallet doesn't connect to local daemon

I have a Monero daemon running on a Raspberry Pi connected to my LAN and it worked fine for sometimes, but lately, I'm unable to connect wallet from another PC to it. When the issue has happened for ...