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841  Economy / Scam Accusations / Re: Probable alt of a scammer on: July 04, 2015, 06:35:42 AM
I have changed it to neutral for now.

Pls read the whole thread before posting, yenzae0215 is my cousin

You are so close. Why don't you ask him? Is he a kid? If yes, contact his parents.
842  Economy / Scam Accusations / Re: Probable alt of a scammer on: July 04, 2015, 12:18:22 AM
I came across this on the lending section is this accusation valid?
 -snip-

Yes because I don't think someone would withdraw their bet amount to another person's address. Hexcoin already withdraw bet amount to yenzae0215's address more than one time.
843  Bitcoin / Development & Technical Discussion / Re: Bitcoin XT code enabling bigger blocks on: July 04, 2015, 12:16:02 AM
Quote
... doubling every two years (so 16MB in 2018)

What does it mean ? It will keep on growing like 8, 16, 32, 64, 128, 256, 512, 1024...

That means we are going to have 1GB block limit by 2030 on XTcoin ?

Awesome Kiss

That rationale does not make sense. We are assuming that storage space will be doubling every two years but possibly this won't be true for long.

Also whats Bitcoin XT? Is it an altcoin?

It is a fork of Bitcoin Core with some features but it hard-forked which makes it kinda-altcoin. However, if majority users use it and if it becomes the larger chain, it maybe considered as main chain.

Github: https://github.com/bitcoinxt/bitcoinxt
Stackexchange: http://bitcoin.stackexchange.com/a/38181
844  Economy / Lending / Re: Need Loan- Have collateral on: July 04, 2015, 12:10:52 AM
The address you used to sign is very recent. Can't you post a signed message from another address(if any) which you posted at least ~2 months ago?
845  Bitcoin / Electrum / Re: Wallet corrupted because of a bad configuration file.Will pay .1 if you help on: July 04, 2015, 12:06:13 AM
Delete configuration file from Electrum directory. Electrum directory is ~/.Electrum
846  Economy / Scam Accusations / Re: CloudThink.IO removed management pictures after being caught with stealing on: July 03, 2015, 11:58:52 PM
I had a belief CoinTelegraph was different but I was wrong, very wrong! Undecided

http://cointelegraph.com/news/114740/cloudthink (archive)

CloudThink is a cloud mining service and mining hardware developer headquartered in the UK, with a second company running their mining operations in Taiwan. Unlike other cloud mining services, some of which simply allocate hashing power to their clients without further involvement, CloudThink offers daily payouts based upon the company's trading performance and guarantees customers a minimum level of profit based on the package contract they purchase
847  Economy / Service Discussion / Re: Anyone successfully implemented blockchain.info's receive payments API? on: July 03, 2015, 06:49:28 PM
I dont get it. How does an online website initiate transaction that is to be done offline ?

If we look at it as a replacement of blockchain.info receive API, the purpose it needs to serve is simple...

1. Generate an address for the user.

2. Get informed when there is an amount on that address as well as the amount itself.

3. Swipe the fund from this address to a pre-defined address.

Can the above be achieved online (as we need it for a website ofcourse) without running two VPS instance ? And even if I have a VPS, can Step 2 be done using https://github.com/Bit-Wasp/bitcoin-lib-php ?

 - Generate an extended public key and create address.
 - Give that unique address to customer.
 - Check if that address received any Bitcoins using any block explorers or you can use Bitcoin core.
 - Etcetera...

If you want to spend from that address, creat and sign transaction with XPRV locally using any of the software listed above and broadcast it.

P.S. https://github.com/Bit-Wasp/bitcoin-lib-php won't check transactions or notify you. You will have to add a simple script for checking transactions.
848  Economy / Service Discussion / Re: [2015-07-03] BitGo Launches Solvency Certificate Service for Bitcoin Companies on: July 03, 2015, 06:01:34 PM
It seems like you posted in wrong section.
849  Bitcoin / Project Development / Re: Unique Wallet Addresses for Each Buyer on: July 03, 2015, 06:00:19 PM
See https://bitcointalk.org/index.php?topic=1105292.0.

Better use hierarchical deterministic wallet. Advantages are:

 - You don't need to rely entirely on third party.
 - You don't need to expose private keys to create corresponding public keys(addresses).

Softwares for various languages are available here -- https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#Implementations.

Feel free to post here if you need any help.
850  Economy / Service Discussion / Re: questions about bitkey.io on: July 03, 2015, 05:53:01 PM
Can't even get the 64 bit downloaded, I think the mirrors are down.

http://mirror.turnkeylinux.org/turnkeylinux/images/iso/

Are there any other distros which come loaded with bitcoin stuff ?

Try Tails. https://tails.boum.org

LinuxCoin was a good OS but is outdated.
851  Other / Beginners & Help / Re: Are there any wallets for Windows Phone? on: July 03, 2015, 05:46:13 PM
OK.. I created a wallet at coinsplit and created shares and it's showing me the wallet address, so do I just send the total amount with the fee and it will get auto forwarded to the addresses I listed in shares ?

Yes. I suggest you to try it now with a small amount. If you don't like it, try Coinkite.
852  Economy / Lending / Re: need .05 loan on: July 03, 2015, 05:30:55 PM
Hexcoin is probable alt of yenzae0215.

Hexcoin's address 191xqivuaVerBts5Q3rWg28qhvaDX3PjeE. (post | archive)

Transaction from Hexcoin's address to 1LGbP2HqrS9LjieLxjvS5Efxy5yz119Qcc. (fb373ab295...

1LGbP2HqrS9LjieLxjvS5Efxy5yz119Qcc is DirectBet.eu's deposit address. (bet status)

Bet won and payout sent to 12R9SPJBoiXmJiQ23HwM38gEWoBZ6FWk31. (a1e22929cd...)

12R9SPJBoiXmJiQ23HwM38gEWoBZ6FWk31 is yenzae0215's address. (See OP | archive)

edit :
Transaction from hexcoin's address to 1G8DHQuaP4ahZRw1ugC83QKKaW7P1tZQ4L ( url=https://blockchain.info/tx/3198c9c660efdab286d6b01cec7ad6dc014ef5d2ff72f515644a703d54413a59]3198c...[/url]
1G8DHQuaP4ahZRw1ugC83QKKaW7P1tZQ4L is Directbet.eu's deposit address
Bet won and payout sent to 12R9SPJBoiXmJiQ23HwM38gEWoBZ6FWk31

Great find!
853  Economy / Lending / Re: ★[No Collateral*]★[No Interest]★ Offering Micro-Loans To Everyone! on: July 03, 2015, 05:26:28 PM
Loan Amount : 0.1 BTC
Reason        : Pay for a service
BTC Address  : 1MBWNJLrqhytv4EijzuNrGdcAT6Atd8RZg
Term Length   : 24 Hrs Max.

I have some amount in escrow in purse.io. Item will get delivered today and i can send the fund immediately.

Denied. Your trust is not enough to lend you 0.1BTC without collateral.
854  Other / MultiBit / Re: In multibit..where can I see what my public key is? on: July 03, 2015, 05:25:22 PM
The issue is seeing the different addresses in my wallet..

What do you mean? I didn't understand correctly. You don't have the address you think is yours in your Multibit wallet?

How are address and public key different?

Shorena already mention.

-snip-
A public key is a 256 bit number if compressed (or a 256 bit x coordinate and 256 bit y coordinate of a point if not compressed) calculated from the private key using ECDSA with the Secp256k1 curve.

A BTC address is a hash of a public key with a version number prepended, a checksum appended, and then Base58Check encoded.
855  Other / New forum software / Re: Display email address! on: July 03, 2015, 05:22:13 PM
Yes, there's probably a more or less foolproof way to implement it. If you really want it, I'm not opposed, but I still don't see why.

Opinions are welcome and if this is not a good feature, then there is no reason to add this.

BTW, what happens when you uncheck the box "Hide email address from public?" in your profile-account related settings? Isn't that what you wanted?

No. That will display the email address I linked with this account but I don't want to use that email address. Especially, because of the potential spam.
856  Economy / Service Discussion / Re: questions about bitkey.io on: July 03, 2015, 04:48:01 PM
You can't run a 64-bit OS in 32-bit processor. You might be lucky to get it booted but it won't be stable. Re-download a 32-bit OS.

IMHO BitKey is great. I highly recommend you to store your seed you generate in Electrum to prevent any loss.
857  Economy / Service Discussion / Re: Anyone successfully implemented blockchain.info's receive payments API? on: July 03, 2015, 04:46:05 PM
This seems to be a nice solution. Especially this one for PHP - https://github.com/Bit-Wasp/bitcoin-lib-php. But, does not it require to run this code as well as a Bitcoin daemon on two separate VPS instance ?

Nope. You can generate extended public keys from using a software, the PHP program you mentioned, for example. You can sign a transaction using corresponding private key in an offline machine using a software, https://github.com/bip32/bip32.github.io, for example.

I recommend you to read http://blog.richardkiss.com/?p=313.
858  Other / MultiBit / Re: In multibit..where can I see what my public key is? on: July 03, 2015, 04:06:41 PM
I wanted to follow a multibit address on blockchain.info...

So that is impossible to follow an address when using multibit - except through multibit?

You can copy the Bitcoin address you want to follow. See https://multibit.org/en/help/v0.5/help_receivingBitcoin.html. I highly recommend you to read everything in https://multibit.org/en/help/v0.5/help_contents.html.

FYI, address and public key are different.

* Edited.
859  Other / MultiBit / Re: In multibit..where can I see what my public key is? on: July 03, 2015, 04:03:41 PM
AFAIK There is no option to see public key in Multibit. Note that, I have not used recent versions.

To get your public key:

  • Export your private key.
  • Download https://www.bitaddress.org/ and use it locally
  • Open BitAddress.org html file and input your private key in 'Wallet details'.
  • You can copy public key either in the uncompressed format(65-byte) or the compressed format(33-byte).

To export your private key, see https://multibit.org/en/help/v0.5/help_exportingPrivateKeys.html.

* jackbox confirmed there is no option to see public key.
860  Other / Beginners & Help / Re: Creating same priv. key two times on: July 03, 2015, 03:49:01 PM
Another interesting post:

there is no risk of collision?

Correct.

I mean 2 person can generate the same btc address

And all the molecules of air can collect in the corner of the room causing everyone in the room to suffocate, but the probability is so low that we consider it impossible.

Even if risks are low, what will happen in this case?

If the users are using faulty software that does not properly generate a random number (so that multiple users end up generating the same number), then all users that generate the same number will have the ability to spend the bitcoins that are sent to the address.  Whoever spends an output and gets confirmed first gets to be the "real" transaction for that output, and any transaction created by any of the others to spend the same output are rejected.



Oh, I suddenly realized that, there are 2^256 private keys available in the universe, while there is only 2^160 bitcoin addresses available. That is, there are about 2^96 (about 8*10^30) private keys pointing to a same bitcoin address?! Is that true? Then will them collide?

See

So there are 2^160 public keys but only 2^96 private keys? Ho does that add up?
Are there private keys than unlock more than one public key?
There are just under 2^256 private keys, just under 2^256 public keys, and 2^160 addresses. There are some addresses that have more than one corresponding public key and thus more than one corresponding private key.

The confusion comes in when two distinct concepts have the same name.

"private key" can mean either the raw 256 bits used to calculate the signature, or it can mean the encoded format that bitcoin stores.

Public key can also mean either the (x,y) point used to verify signatures, or it can mean the encoded version that bitcoin uses.

In the raw sense, both private keys are the same, and both public keys refer to the same (x,y) point.  In the encoded sense, the compressed private key encoding implies the compressed public key encoding, and ditto for the uncompressed encodings.  The addresses are hashed from the encoded forms, so there are two different addresses that technically refer to the exact same keypair.

Since bitcoin deals exclusively with encoded versions, the two formats are totally distinct different things.  If you generate your own raw private key, you can create both encodings and calculate both addresses.  Import the two encodings into different wallets, and neither one will have any idea about transactions sent to the other.  Even though they could calculate signatures for both, they don't know to look for them.

Difference between public keys and addresses:

Your public key is your BTC address. You can go to receive then copy an address that you want to receive at/use.

This is not true.

A public key is a 256 bit number if compressed (or a 256 bit x coordinate and 256 bit y coordinate of a point if not compressed) calculated from the private key using ECDSA with the Secp256k1 curve.

A BTC address is a hash of a public key with a version number prepended, a checksum appended, and then Base58Check encoded.
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