[XMR] Monero - A secure, private, untraceable cryptocurrency

[hbqw12as]

The wallet this reminder
:

Error: transaction <fe33df230d1c87a3f41e1b7bc69a03142071629a846ef000563092d3148c
e381> was rejected by daemon with status "Failed"

2016-Mar-04 23:37:18.820164 [RPC0]ERROR ..\..\src\cryptonote_core\tx_pool.cpp:62
 Transaction with id= <fe33df230d1c87a3f41e1b7bc69a03142071629a846ef000563092d31
48ce381> used already spent key images
2016-Mar-04 23:37:18.828165 [RPC0]Transaction verification failed: <fe33df230d1c
87a3f41e1b7bc69a03142071629a846ef000563092d3148ce381>
2016-Mar-04 23:37:18.832165 [RPC0][on_send_raw_tx]: Failed to process tx

[equipoise]

The wallet this reminder
:

Error: transaction <fe33df230d1c87a3f41e1b7bc69a03142071629a846ef000563092d3148c
e381> was rejected by daemon with status "Failed"

2016-Mar-04 23:37:18.820164 [RPC0]ERROR ..\..\src\cryptonote_core\tx_pool.cpp:62
 Transaction with id= <fe33df230d1c87a3f41e1b7bc69a03142071629a846ef000563092d31
48ce381> used already spent key images
2016-Mar-04 23:37:18.828165 [RPC0]Transaction verification failed: <fe33df230d1c
87a3f41e1b7bc69a03142071629a846ef000563092d3148ce381>
2016-Mar-04 23:37:18.832165 [RPC0][on_send_raw_tx]: Failed to process tx

Try this:
1.) Backup all your wallet files (wallet.bin.keys is the important one!). Also write down you seed words.
2.) Delete wallet.bin (wallet.bin.keys should stay in the folder - don't delete it).
3.) Close bitmonerod
4.) Delete poolstate.bin from your blockchain folder.
5.) Also delete or rename the blockchain
6.) Start bitmonerod again and wait it to sync
7.) Open your wallet as usual (.bin will be regenerated from .bin.keys).
8.) Try to send the amount.

If this doesn't help wait 24 hours and try again 1-8 (skip 5 and 6 the second time). If this doesn't help too, wait for 0.9.2 release (soon).

[dEBRUYNE]

Monero mentioned:

https://bullbearanalytics.com/2016/02/25/the-bba-show-episode-5-hk-swans-monero/

(Starts from ~24:30)

[Drhiggins]

Monero mentioned:

https://bullbearanalytics.com/2016/02/25/the-bba-show-episode-5-hk-swans-monero/

(Starts from ~24:30)

Good stuff here.  Happy to hear good news coming from multiple places as of late. 

[1337leet]

Every time I do a transaction from mymonero I need to pay 0.015 XMR.
Is this a fee from mymonero or is it a necessary transaction fee from the network?

[dEBRUYNE]

Every time I do a transaction from mymonero I need to pay 0.015 XMR.
Is this a fee from mymonero or is it a necessary transaction fee from the network?

The default fee is 0.01 per KB. I think MyMonero also takes that into account when calculating the fee.

[dEBRUYNE]

Dr. Nicolas T. Courtois, who spoke positvely about Monero before, has put out a 5 BTC bounty for discovery of attacks bugs or flaws in, among others, ring signatures:

https://www.reddit.com/r/Monero/comments/48y9lm/dr_nicolas_t_courtois_who_spoke_positvely_about/

[pönde]

I guess every wallet created by simplewallet has to be refreshed to catch up the blockchain? And this has to be done to every wallet. Also for view-only-wallets. It takes a time. This is not so nice once the bitmonerod has to be also get synchronized with the blockchain. Which take a time.

So. It would be great if MyMonero.com was added with a such feature which can be used to check a balance of an address. It would be a kind of a online view-only-wallet. By just giving the address and the viewkey the balance can be seen.

[novag]

If peoples have in ETH going to XMR, XMR will price rise to the moon!

[25hashcoin]

If peoples have in ETH going to XMR, XMR will price rise to the moon!

Try posting in the speculation thread: https://bitcointalk.org/index.php?topic=753252.13960

[novag]

If peoples have in ETH going to XMR, XMR will price rise to the moon!

Try posting in the speculation thread: https://bitcointalk.org/index.php?topic=753252.13960

OK!

[smooth]

Every time I do a transaction from mymonero I need to pay 0.015 XMR.
Is this a fee from mymonero or is it a necessary transaction fee from the network?

I think 0.01 is the fee from the network (which depends on the size of the transaction) and MyMonero adds 0.005, but I'm not sure. You should ask MyMonero support.

[luigi1111]

I guess every wallet created by simplewallet has to be refreshed to catch up the blockchain? And this has to be done to every wallet. Also for view-only-wallets. It takes a time. This is not so nice once the bitmonerod has to be also get synchronized with the blockchain. Which take a time.

So. It would be great if MyMonero.com was added with a such feature which can be used to check a balance of an address. It would be a kind of a online view-only-wallet. By just giving the address and the viewkey the balance can be seen.

New wallets take very little time to refresh, less than 1 minute for me. If you're restoring from seed or generating a bunch of view-only wallets, then yeah it's gonna take awhile.

[Johnny Mnemonic]

So. It would be great if MyMonero.com was added with a such feature which can be used to check a balance of an address. It would be a kind of a online view-only-wallet. By just giving the address and the viewkey the balance can be seen.

Such a feature would be costly, as retrieving a balance requires the entire blockchain to be scanned. Mymonero already charges 10 XMR to discourage wallet imports for this reason.

[iCEBREAKER]

Found this on 4chan.  Might make a good signature!

Monero is only trying to be one thing: true digital cash, with all the privacy and fungibility that comes with that. It isn't just trying - it is wildly succeeding.

I can send $100,000 worth of Monero across the world instantly and nearly for free... but so could Bitcoin. But with Monero I can do it and no one can trace the transaction or see that I did it.

It is the holy grail of digital money.

[bitebits]

Since Monero is fungible (nice!) it can't have colored coins, correct? One XMR = one XMR.

Lets say as a business I would like to make a 10 million USD (Monero market cap), international, private and instant transaction with another company. Monero would be perfect for this. But since Monero is fungible, I can't just color a coin and say it represents our 10 million USD transaction.

How can such a thing currently be solved without moving the price too much?

[smooth]

Since Monero is fungible (nice!) it can't have colored coins, correct? One XMR = one XMR.

Not in the same way as Bitcoin. We are looking at how best to approach assets as a research goal.

Lets say as a business I would like to make a 10 million USD (Monero market cap), international, private and instant transaction with another company. Monero would be perfect for this. But since Monero is fungible, I can't just color a coin and say it represents our 10 million USD transaction.

This use case does not really work. Let's say you could send a colored coin that was "worth" 10 million USD. What is the recipient supposed to do with with this colored coin? They can't spend it, at least not unless they can find someone who also trusts you to owe them 10 million USD. It represents an IOU, but in order for the recipient to actually get their money you would need to send a wire transfer or something, so why not just do that in the first place. Or if you really want an IOU, you can send a digitally signed email (and store a hash of it in a blockchain if you think that is useful).

How can such a thing currently be solved without moving the price too much?

Increase the market cap and liquidity so that 10 million USD can easily be accommodated.

[americanpegasus]

This use case does not really work. Let's say you could send a colored coin that was "worth" 10 million USD. What is the recipient supposed to do with with this colored coin? They can't spend it, at least not unless they can find someone who also trusts you to owe them 10 million USD. It represents an IOU, but in order for the recipient to actually get their money you would need to send a wire transfer or something, so why not just do that in the first place. Or if you really want an IOU, you can send a digitally signed email (and store a hash of it in a blockchain if you think that is useful).

This is what I have been saying for a while.  Since Bitcoin cannot be fungible at a protocol level, they should go the other way and try to deliberately be the most non-fungible coin possible.  Or, perhaps that could be handled by another blockchain entirely.... as in, colored coins by default.  Perhaps you could even store a small piece of data with each coin, the access to which is controlled by owning that token.

[equipoise]

My blockchain got corrupted when the electricity stopped. I resynced from scratch and it took about 24 hours. Previously I resynced from scratch a few times on the same machine on the same USB3 external hdd and on the same internet connection for 1-3 hours (it was on bitmonerod 0.9.0 tagged and before tagged, not 0.9.1). What could be the issue with the slow sync this time?

I'm not sure I'm understanding. Are you using the same version as before?

What CPU do you have?

I'm using 0.9.1 now. Previous times I was using 0.9.0 tagged and previous version (0.9.0 before tagged). Windows 7 64x. Mobile Core I7 (4 cores, 8 logical cores, 6 MB cash, with AES-NI).

Thank you for clarifying. We are looking into it.

I ran 0.9.1 again and it got to block 135000 in 43 minutes and block 270000 in 2 hours and 25 minutes. Then i checked my .bat file and the "--db-sync-mode fastest:async:10000" option was missing (fastest:async:1000 is the default and I'm using 10000, but it seems I deleted it by mistake). Then I started it again with the option added and it got to 135000 in 17 minutes and to 646069 in 2 hours and 25 minutes. That was the speed I experienced with 0.9 beta2. I hope I didn't alerted all the dev team. Great missive and great dev team. Congratulations to the new members. Keep the good work going.

Thank you for the follow up. We're going to take a look at whether there is a better default for the parameter, although higher numbers increase memory usage, so it may not be best for everyone to increase it.

That's what I expected too, but trying with 1000, 10000, 25000 and 100000 I can't see overall difference in RAM usage on my 16GB RAM system. It's using about 1 GB RAM on my system during sync with each option and most of it is shareable. After sync it's using 500 MB. The private working set (not shareable) is just 36-50 MB on my system. Also on my system there is a good speed improvement between 1000 and 10000, but going to 25000 and 100000 doesn't improve the speed more and it stays the same.

Your observations are exactly what is expected; smooth misspoke about increased memory usage. Increasing the sync interval just controls how much unwritten data is allowed to accumulate in the FS cache, but that doesn't affect program RAM usage. (He was probably thinking about batch size, which *does* increase memory usage.)
And yes, there's a practical threshold above which there's no longer any performance difference, because when the cache flush hits, there's enough unwritten data in cache to keep the storage device 100% busy until the sync/flush finishes. (It's also possible that your system's default settings have automatically started flushing the cache before your specified interval hits.)

Thank you for the clarification. I'll test if increasing the --batch-size helps the sync speed on my system - there's plenty of free RAM I'm not using most of the time.

Finally I have some time to test this more; however, there's no --batch-size option for birmonerod. There's such an option only for blockchain_import.

[bitebits]

Since Monero is fungible (nice!) it can't have colored coins, correct? One XMR = one XMR.

Not in the same way as Bitcoin. We are looking at how best to approach assets as a research goal.

Thanks for your reply and lead. Coincidentally I just listened to fluffypony talking about Monero Assets (storing metadata in the 'TX_EXTRA' field, Bitcoin's OP_RETURN) during the 'Bitcoinference Monero Talk' (uploaded 2015.06.10). I can by the way recommend to watch the whole video, very informative.

https://www.youtube.com/watch?v=GEVm1dMn5Ks&feature=youtu.be&t=2142