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Showing 20 of 146 results by lukaexpl
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Board Development & Technical Discussion
Re: Blockchain.info explorer not showing the correct amount on a BTC address?
by
lukaexpl
on 08/01/2018, 10:36:32 UTC
Yeah. It simply lagged. I was never worried as soon as I saw it on another Block explorer, but still one wonders what goes on behind the scenes and can you really trust what you see on a website claiming to reflect the state of the blockchain.

I guess it stresses the importance of "being able to run your own node" as the basic building block of a decentralised system.
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Board Development & Technical Discussion
Blockchain.info explorer not showing the correct amount on a BTC address?
by
lukaexpl
on 07/01/2018, 12:53:59 UTC
https://blockchain.info/address/13STWgarJY21fZAHhNMsA3bia5L52zx5qv

https://blockexplorer.com/address/13STWgarJY21fZAHhNMsA3bia5L52zx5qv


Clearly the blockchain.info explorer is missing the latest transaction:

https://blockexplorer.com/tx/43a8712cbdb0f6fe304858e40920be8d35d90fc2d6b0f9ae3c834ae037197305

but it is still visible and blockchain.info explorer:

https://blockchain.info/tx/43a8712cbdb0f6fe304858e40920be8d35d90fc2d6b0f9ae3c834ae037197305


So why is blockchain.info explorer not showing the right amount of unspent inputs for the said address?
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Topic
Board Altcoin Discussion
Re: How is NEO private key converted to NEOs public key?
by
lukaexpl
on 06/12/2017, 08:29:30 UTC
I want to check for myself.

I am sorry if I do not trust a single wallet that handles the private keys as if it was 0800 - toll free number.
I think, you need to import your private key to Neo wallet app, after you can see your NEOs public key
Be careful to use the private key because if someone knows you will lose money in the account.

Thanks. I am aware of that.

My question was actually: What cryptographic function(s) does NEO use to convert private key to public key and where can I check so that I get the same result?

I do not think there will be a function that can convert private key to public key, if there is one, that means you can also convert public key to private key, it is impossible, so I think the only way is login your wallet with your private key to get your public key.

Sorry to tell you but you are brutally wrong.
How would you arrive at your public key if not by pulling your private key through a function? What would the relationship be? You are given some private key that has no connection to public key?

Such functions are implemented in dozens of computer languages for Bitcoin:
Python (bitcoin library), Javscript, C++ and the list goes on
Watch:
https://www.youtube.com/watch?v=iB3HcPgm_FI

Try
bitaddress.org

It does exactly that: converts your private key to a public key.

The strenght and beauty of this functions is that priv -> pub takes nanoseconds and pub -> priv is "impossible".
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Topic
Board Altcoin Discussion
Re: How is NEO private key converted to NEOs public key?
by
lukaexpl
on 06/12/2017, 07:29:19 UTC
If you dont trust any of those Neo wallet providers, why dont you store your neo's on a ledger wallet?

it it is much more safe than just having all those coins in there, and we all know that they are pretty expensive right now (it is not $5 as it was a few months ago)

I dont trust in all those online wallets from neo, i had more than 10 in there and i feel very unconfortable, i dont know why, but i dont trust them.

The same happens with MyEtherWallet, it is very risky for me.


I have the exact same thoughts and feelings as you. Yesterday I got my Ledger Nano.
It was a very disappointing experience.

Cable connects randomly, some apps do not work, when playing with the seed I do not get the same Ether addresses that https://iancoleman.io/bip39/ shows me under Ether derivation path.

And what is most important: I HAVE NO IDEA how is the 24-word seed converted to NEO private key. Without it I am not really prepared to trust any single source (like Ledger for example).
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Board Development & Technical Discussion
Re: What does Satoshi Nakamoto's 9 page white paper mean to you?
by
lukaexpl
on 05/12/2017, 21:28:01 UTC
It represents a document that should be given a Nobel prize for economics and peace simultaneously (instead of clowns and war criminals that usually get them).
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Topic
Board Altcoin Discussion
Re: What the hell are Crypto kitties?
by
lukaexpl
on 05/12/2017, 21:11:48 UTC
I read some topics on reddit about crypto kitties and some people that they sold their kitties for 250ETH? WTF?
What is this ?
I have no clue what it is, but I am 100% sure it is the reason why the Ethereum network is bery slow at the moment. I need to pay 50 Gwei in order to have a normal speed transaction. Even with that Etherdelta is giving errors.

You are right, this game devours 15% of the ether network, and already as the second day the ether network got up. I can not imagine if we allow several such projects to be launched simultaneously, we will bury the ether forever.

How do you disallow participants of a decentralized network from using it and voting with their transaction fees what is really important and valuable in life (i.e. Cryptokitties)?

Where are all those BTC crappers / ETH to the moon prophets (such cheap and fast transactions). Seems it is not much better after first use case.
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Topic
Board Altcoin Discussion
Re: How is NEO private key converted to NEOs public key?
by
lukaexpl
on 05/12/2017, 21:07:03 UTC
I want to check for myself.

I am sorry if I do not trust a single wallet that handles the private keys as if it was 0800 - toll free number.
I think, you need to import your private key to Neo wallet app, after you can see your NEOs public key
Be careful to use the private key because if someone knows you will lose money in the account.

Thanks. I am aware of that.

My question was actually: What cryptographic function(s) does NEO use to convert private key to public key and where can I check so that I get the same result?
Post
Topic
Board Altcoin Discussion
Re: How is NEO private key converted to NEOs public key?
by
lukaexpl
on 05/12/2017, 08:19:14 UTC
BUmp
Post
Topic
Board Development & Technical Discussion
Re: Unconfirmed transaction for 160+ hours
by
lukaexpl
on 01/12/2017, 12:28:24 UTC
Thanks for the explanation PVMiner. Still I do not understand why it would add any complexity if the transaction got dropped lets say 1 week after being initially broadcasted.

Regarding confirmtx.com. I wrote an email to the former address that I found and I got back the reply back saying pretty much "The new owner is a fraud. Warn others"
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Board Development & Technical Discussion
Re: Difference between Traditional V/S Crypto Banking
by
lukaexpl
on 01/12/2017, 12:22:48 UTC
I am not sure I know exactly what you mean by Crypto banking but some of the points are:

With BTC:
- there is no authority to blacklist you
- they do not get to tell you "Sir our daily limit is 2000, we are very happy that you keep your 2 mil with us". In the next 3 years you'll get it all
- they do not get to tell you whom you can transact with
- they do not get to lock your funds on software glitch
- they do not get to limit you access when the next wave of government inflation hits your lifesavings and you are watching your purchasing power melt like an ice cream in Harare

And most importantly: - they can not force you to transact, save and live on money the powers to be get to counterfeit on a whim
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Board Development & Technical Discussion
Re: Bitcoins missing after restoring Electrum from seed.
by
lukaexpl
on 01/12/2017, 12:11:28 UTC
I had written out a long reply but while I was finishing the balance started adding back up until everything was square. Must have been a sync problem. Thank you so much for taking the time to help me out!

I understand your fear. Glad that everything worked out.

Since you are familiar with Tails what you could do is track the addresses that you own without the need to type in the seed on a Windows computer.

For example:
- running off of https://bitkey.io/ live cd lets you run a page like https://iancoleman.io/bip39/ from a USB stick (that you can unplug) in a Chromium browser. From that offline computer you can display public addresses connected to your seed and scan them with any mobile device.

That way there is no risk to exposing your seed and no BTC-gone-induced heart attacks.
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Board Development & Technical Discussion
Re: Unconfirmed transaction for 160+ hours
by
lukaexpl
on 26/11/2017, 16:54:11 UTC
I ended up using confirmtx.com

Did not happen automatically within 24 hours, their email support is wrong when you use coinpayments gateway, found the guy on this forum. He said he would check it. It got confirmed some 12 hours later. Wheter it was him or just a random miner picking it up is impossible to tell.

Summary is: it happened 11 days after being broadcasted.

The scary thing is that the network did not drop it. I would much rather prefer if there was a hardcoded limit when transactions get dropped.
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Board Development & Technical Discussion
Re: Paranoid about key generation on Raspberry Pi 3
by
lukaexpl
on 26/11/2017, 16:49:40 UTC
if 20 bucks isnt much then burn it.,

if you still want to use it., use some 3rd part tool, to wipre data.,

what it does is, writes 0 and 1 to the usb, all over again and again., many times.,

so its impossible for some one to recover old data from usb.



I already burnt it, cut it, hammered it and flushed it down the toilet.
You can't believe how resilient this things are.

I was more intersted in whether there is real danger in reusing those cards or how to properly wipe them (answer: you are never really sure with flash drives and SD cards).
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Board Development & Technical Discussion
Re: Paranoid about key generation on Raspberry Pi 3
by
lukaexpl
on 25/11/2017, 19:13:00 UTC
WHAT SHOULD I DO WITH MICROSD CARD AND USB STICK?
Please state reasons for choosing one of the options.

1. Burn 'em. It is not worth risking your BTC for 20 bucks of disposables.

2. Wipe both. If so how?

3. You can use both because the process that you described does in no way, shape or form leave a trace that a malicious party could use to restore your master private key or seed?

I would like to LEARN what happens with such drives under Linux distribution and also recycle them in order to repeat the same process for another altcoin or a smaller BTC amount that I can use as semi-cold storage.

Or you could just install the Linux with encryption ON.
Then your Linux partition on the SD or USB will be one encrypted file and after you delete it and overwrite even a small amount of the data it becomes impossible to un-encrypt. It is essentially a damaged encrypted file for anyone trying to access it.

And even if you would not destroy the data, the Linux would still be encrypted and impossible to access.

This way you wont have to throw those SD:s or USB:s away.

Nice idea. Did not cross my mind. Now I only have to learn how to do that.
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Topic
Board Development & Technical Discussion
Re: brain wallets - good or bad
by
lukaexpl
on 23/11/2017, 19:04:53 UTC
What about if a disease occurs to you and you can't remember it? You'll lose the wallet!
Not a good idea!

I thought the same thing as you did. For example, if a bitcoin's owner is suddenly being diagnosed with Alzheimer or Dementia - it's a huge possibility that he/she will lose the memory of many things, including the password for brain wallet!

Alzheimer or Dementia are usually of a slow onset. But bullets, strokes and meningitis strike fast and produce the same effect.

Of all the things that might disappear in this world one thing is guaranteed - your brain will vanish.
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Board Development & Technical Discussion
Re: Unconfirmed transaction for 160+ hours
by
lukaexpl
on 23/11/2017, 14:04:10 UTC
Is there another tool where I could resend the transaction with a higher fee?

The best would be to use replace-by-fee but you have probably not done it.

I you own the output  1PyMz5LU7oGUeJwsanh3SGKPkc2vm66ntr, you can do "child pays for parent" https://bitcoin.org/en/glossary/cpfp. You spend from
1PyMz5LU7oGUeJwsanh3SGKPkc2vm66ntr  to another address you own and pay a large enough fee. The miners cannot confirm the child without confirming the parent so in order to grab the new fee, they have to confirm the parent transaction. The new transaction (1 input, one output) will be 192 bytes, so two transaction will be 10094+192=10286 bytes. You paid  41830 satoshi in fees. If you pay now a 100000 satoshi fee, these two transaction will be 141830/(10286)=13.78 satoshi/byte. Still not a lot, it will take many hours or days to confirm (but it would have been instant 1-2 days ago). If you pay 1,000,000 satoshis (0.01 BTC), the combined fee will be 1041830/10286=101.28 sat/byte which should get confirmed immediately (even 60-70 sat/byte should be fine now). See, the current mempool statistics:
https://core.jochen-hoenicke.de/queue/#2d
But 0.01 BTC is quite a lot. Your choice. During weekends, there are usually less transactions and mempool is usually emptier and the running fees are lower. Last weekend it was 5 sat/byte so your original transaction was very close.  But nobody knows how full the mempool will be.


Very useful advice. One last question: what wallets (hardware/software?) implement this child pays for parent model?
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Re: Unconfirmed transaction for 160+ hours
by
lukaexpl
on 23/11/2017, 09:13:30 UTC
Is there another tool where I could resend the transaction with a higher fee?
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Topic
Board Development & Technical Discussion
Unconfirmed transaction for 160+ hours
by
lukaexpl
on 23/11/2017, 07:20:40 UTC
It is the following transaction.

https://blockchain.info/tx/98023274befba1e6726e7a6a1b73f122c83bf56692eb84f94d5754005df57953

I sent it from Blockchain.info wallet after reading that unconfirmed tx will be dropped if unconfirmed after 72 hours.
I would not mind getting the tx rejected by the network and trying with a higher fee but that is not happening.

I can not send it again from Blockchain.info wallet because it says that balance is zero on that address.

What are my options?
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Topic
Board Altcoin Discussion
Re: Is there an exchange that takes Bitcon Gold deposits?
by
lukaexpl
on 18/11/2017, 10:47:28 UTC
Funny behaviour from HitBTC. My first BTG deposit of 0.5 got credited very quickly, my second for 5 BTG still nothing after 21 confirmations.

Lets see how it resolves.

It cleared after 12-something hours. According to support it was the upgrading of their BTG wallet on their part.
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Topic
Board Altcoin Discussion
Re: Is there an exchange that takes Bitcon Gold deposits?
by
lukaexpl
on 17/11/2017, 19:16:19 UTC
Funny behaviour from HitBTC. My first BTG deposit of 0.5 got credited very quickly, my second for 5 BTG still nothing after 21 confirmations.

Lets see how it resolves.