NEM (XEM) Official Thread - 100% New Code - Easy To Use APIs - page 1278.

gimre

legendary

Activity: 866

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Quote from: Come-from-Beyond on April 01, 2015, 03:59:30 AM

We were analyzing scenario when harvesting is being done on a computer that may belong to an adversary. Let's name person who harvests as Alice and the owner of the server as Bob. If Alice doesn't have a copy of the whole blockchain and a fork has happened then she can't decide which branch of the two is legit. Bob may use this to trick Alice into harvesting on his secret branch trying to do a double-spending.

Your reasoning is perfectly valid with few buts...

1) he would have to convince "quite a few" users, to actually make this successful. If one person is able to do that we're doomed anyway (same in NXT)
2) it does not work like "power leasing", so attacker actually needs to generate block using every key == waste of time and resources, while meanwhile main chain is going forward...

luckygenough56

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Does Bob hump Alice ?

patmast3r

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Quote from: hardshot on April 01, 2015, 03:57:53 AM

Will local node and remote node have to run at the same time to do delegated harvesting?

No they don't have to run at the same time. Only the node you're harvesting on needs to run.
Anything else would defeat the point of the excecise.

Come-from-Beyond

legendary

Activity: 2142

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Newbie

Quote from: gimre on April 01, 2015, 03:46:57 AM

Please elaborate on your question, as I might have misunderstood it.

We were analyzing scenario when harvesting is being done on a computer that may belong to an adversary. Let's name person who harvests as Alice and the owner of the server as Bob. If Alice doesn't have a copy of the whole blockchain and a fork has happened then she can't decide which branch of the two is legit. Bob may use this to trick Alice into harvesting on his secret branch trying to do a double-spending.

hardshot

sr. member

Activity: 457

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Will local node and remote node have to run at the same time to do delegated harvesting?

luckygenough56

legendary

Activity: 1526

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tools gonna be manipulated

patmast3r

hero member

Activity: 980

Merit: 1001

Quote from: cryptoconomist on April 01, 2015, 03:48:34 AM

Quote from: patmast3r on April 01, 2015, 03:45:59 AM

Quote from: cryptoconomist on April 01, 2015, 03:44:52 AM

Quote from: gimre on April 01, 2015, 03:39:38 AM

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

I have only one open.... don't know what to do.... I tried changing the host with no success

please help

any change you harvested locally and now trying to do delegated ?
That's like harvesting with multiple accounts at once.

ok maybe I don't understand I'm harvesting locally...

but what is correct

and can I only harvest locally is that ok?

Yep, that's perfectly fine.

BloodyRookie

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Activity: 687

Merit: 500

Quote from: Hollowman338 on April 01, 2015, 03:42:45 AM

Quote from: makoto1337 on April 01, 2015, 03:40:31 AM

Quote from: Hollowman338 on April 01, 2015, 03:38:02 AM

Quote from: Hollowman338 on March 31, 2015, 09:50:41 PM

When will assets be available? The client still states that they are "not yet available in beta release".

The above, and what happened to the Proof of Importance competition rewards? I came in 3rd place, and had 0.1 nemstake slated as a reward? Huh

Did you provide an address to receive the reward?

My address was listed in the nemesis block (NBVOVD-U27VD6-HHUCRM-SBFPX3-YQWKHB-4KTTQP-E4D4)

We will check on that.

cryptoconomist

full member

Activity: 226

Merit: 100

Quote from: patmast3r on April 01, 2015, 03:45:59 AM

Quote from: cryptoconomist on April 01, 2015, 03:44:52 AM

Quote from: gimre on April 01, 2015, 03:39:38 AM

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

I have only one open.... don't know what to do.... I tried changing the host with no success

please help

any change you harvested locally and now trying to do delegated ?
That's like harvesting with multiple accounts at once.

ok maybe I don't understand I'm harvesting locally...

but what is correct

and can I only harvest locally is that ok?

gimre

legendary

Activity: 866

Merit: 1002

Quote from: Come-from-Beyond on April 01, 2015, 03:45:31 AM

I assume that I'm right if it's the only counterargument that came to your mind.

Please elaborate on your question, as I might have misunderstood it.

patmast3r

hero member

Activity: 980

Merit: 1001

Quote from: cryptoconomist on April 01, 2015, 03:44:52 AM

Quote from: gimre on April 01, 2015, 03:39:38 AM

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

I have only one open.... don't know what to do.... I tried changing the host with no success

please help

any change you harvested locally and now trying to do delegated ?
That's like harvesting with multiple accounts at once.

Come-from-Beyond

legendary

Activity: 2142

Merit: 1010

Newbie

Quote from: gimre on April 01, 2015, 01:33:46 AM

Quote from: Come-from-Beyond on March 31, 2015, 07:12:24 PM

Remote server may use your harvesting power for double-spending.

I assume you're trolling, as I cannot expect such statement from educated person and a developer.

I assume that I'm right if it's the only counterargument that came to your mind.

cryptoconomist

full member

Activity: 226

Merit: 100

Quote from: gimre on April 01, 2015, 03:39:38 AM

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

I have only one open.... don't know what to do.... I tried changing the host with no success

please help

coingirl87

member

Activity: 103

Merit: 10

Quote from: gimre on April 01, 2015, 03:39:38 AM

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

ty...where i can do this??

Hollowman338

legendary

Activity: 1246

Merit: 1000

Quote from: makoto1337 on April 01, 2015, 03:40:31 AM

Quote from: Hollowman338 on April 01, 2015, 03:38:02 AM

Quote from: Hollowman338 on March 31, 2015, 09:50:41 PM

When will assets be available? The client still states that they are "not yet available in beta release".

The above, and what happened to the Proof of Importance competition rewards? I came in 3rd place, and had 0.1 nemstake slated as a reward? Huh

Did you provide an address to receive the reward?

My address was listed in the nemesis block (NBVOVD-U27VD6-HHUCRM-SBFPX3-YQWKHB-4KTTQP-E4D4)

makoto1337

legendary

Activity: 1596

Merit: 1000

I am not Dorian Nakamoto.

Quote from: Hollowman338 on April 01, 2015, 03:38:02 AM

Quote from: Hollowman338 on March 31, 2015, 09:50:41 PM

When will assets be available? The client still states that they are "not yet available in beta release".

The above, and what happened to the Proof of Importance competition rewards? I came in 3rd place, and had 0.1 nemstake slated as a reward? Huh

Did you provide an address to receive the reward?

gimre

legendary

Activity: 866

Merit: 1002

NO.

If you're getting error 699, it means you have tried harvesting with >1 account on a single machine.

By default NIS is setup to allow only SINGLE harvester.

If you want to increase the number change unclockedLimit in NIS settings:

Code:

# Maximum number of unlocked accounts. Meaning: maximum number of accounts that are allowed to use this NIS for harvesting
nis.unlockedLimit = 1

Hollowman338

legendary

Activity: 1246

Merit: 1000

Quote from: Hollowman338 on March 31, 2015, 09:50:41 PM

When will assets be available? The client still states that they are "not yet available in beta release".

The above, and what happened to the Proof of Importance competition rewards? I came in 3rd place, and had 0.1 nemstake slated as a reward? Huh

makoto1337

legendary

Activity: 1596

Merit: 1000

I am not Dorian Nakamoto.

New Cointelegraph article about NEM (interview with some guy named Makoto):

http://cointelegraph.com/news/113839/nem-launches-targets-old-economy-with-proof-of-importance

coingirl87

member

Activity: 103

Merit: 10

Quote from: hardshot on April 01, 2015, 03:31:04 AM

Quote from: patmast3r on April 01, 2015, 03:29:36 AM

Quote from: coingirl87 on April 01, 2015, 03:27:24 AM

Hey devs. ...i got an error when i start delegated harvesting..

"ERROR 699 - Maximum number of harvesters allowed on server has been reached."

what to do now??

You need to give more information.

Is it a local or a remote node ? I someone already harvesting there ? If it is remote, is it your node ?

This message indicates that someone is already harvesting on that node.

So it's really necessary to set a remote host in options?

In that case you should update the guide

+1

yes this would be fine to update the guide. Thanks

Topic: NEM (XEM) Official Thread - 100% New Code - Easy To Use APIs - page 1278. (Read 2985503 times)