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1  Bitcoin / Project Development / Own a piece of Manhattan on: February 26, 2018, 07:09:44 PM
Hello all,

I was wondering if there would be interest from the community to crowd funding an apartment that can potentially generate rental income?

I live in a neighborhood in New York that hosts several professionals in the age group of 25-40. There are high rise buildings here with plenty of apartments. The apartments barely stay vacant and I myself have sub-let my apartment several times over last few years.

I have a vague idea wherein I can crowdsource an apartment purchase in the neighborhood and then manage it for rentals. Since there would be no mortgage involved, the monthly costs would be minimal(building management fee). Any rent generated can be redistributed, while the ownership still remains with us.

Thoughts?


https://bitcointalk.org/index.php?topic=3025917
2  Economy / Securities / Own a piece of Manhattan on: February 26, 2018, 06:17:07 PM
Hello all,

I was wondering if there would be interest from the community to crowd funding an apartment that can potentially generate rental income?

I live in a neighborhood in New York that hosts several professionals in the age group of 25-40. There are high rise buildings here with plenty of apartments. The apartments barely stay vacant and I myself have sub-let my apartment several times over last few years.

I have a vague idea wherein I can crowdsource an apartment purchase in the neighborhood and then manage it for rentals. Since there would be no mortgage involved, the monthly costs would be minimal(building management fee). Any rent generated can be redistributed, while the ownership still remains with us.

Thoughts?
3  Economy / Services / Amazon US Items for BTC on: January 24, 2018, 03:45:15 PM
Hi,

I am offering my services for those interested in shopping on Amazon US in exchange for BTC. I am happy to use an Escrow.

My fee: 5% of the product cost.

I have a prime account from Amazon and thus can help people with 2-day deliveries to entire US.

Any questions, post here.
4  Bitcoin / Project Development / [HELP] Coding help for multi exchange trade execution on: January 12, 2018, 08:53:10 PM
Hi,

I am working on a project to develop an auto-execution system that can execute trades on multiple exchanges. I understand APIs from exchanges can be used for data fetches - but am looking for guidance on coding something to execute trades.

Any advice is appreciated.

5  Economy / Digital goods / [WTS] I Sell Target Gift Card - Unscratched New - Accept Escrow on: September 24, 2016, 05:59:29 AM
Hi,

I have a total of $400 worth of Target Gift Cards. They are 4 unscratched cards of $100 each. I am willing to sell them as it is or convert them to e-cards for smaller amounts. Minimum $25.

I will be willing to accept a reputed Escrow from the forum. Split the escrow fee.

I am willing to give upto 10% discount on these cards. So you pay $90 worth BTC for a $100 card if you buy all $400. Minimum discount is 5%. Here is my concession list:

Gift card Face Value       BTC Worth
$25                              $23.75 
$50                              $47.5
$100                            $95
$200                            $185
$400                            $360


Post for details!
6  Local / India / Looking for a business associate - DELHI NCR only on: September 29, 2014, 02:48:06 PM
Hi,

I am looking for someone to help me with converting Bitcoins to INR cash on regular basis. We are a business based in US, with some outsourcing work done in India.

I need a reliable associate who will convert Bitcoins to INR cash on regular basis. Ready to pay a premium over the market price for such exchange.

You will be responsible delivering cash and getting bitcoins instantly at our office in Delhi/NCR.

PM me if you are interested in this.

Cheers!
7  Bitcoin / Bitcoin Technical Support / Bitcoin Core Desktop question on: May 09, 2014, 01:28:19 AM
I am trying to find the answer to this:

How can I find the private and public keys associated with the addresses on my Bitcoin Core Wallet?
8  Economy / Service Discussion / Why doesn't localbitcoin move to next level? on: April 19, 2014, 04:06:23 AM
Localbitcoins provide a valuable support to the industry by matching buyers and sellers. However, there are plenty of cases of user frauds and mistrust. They don't monetize anything under 1 BTC in transaction. Neither do they have any KYC/user authentication methods.

Would you trade with them more often if they allow smaller transactions as escrow and have KYC in place to make users accountable for their trades?

I wonder if this is a gap in the current market? Or if there is a logical strong reason for them not to do this?

Why don't they move to next level? Is there a next level at all?
9  Other / Beginners & Help / Bitcoin/Litecoin/Dogecoin timeseries on: April 04, 2014, 01:13:11 AM
Is there a place to get timeseries data on Bitcoin,Litecoin, Dogecoin and other popular coins?
10  Bitcoin / Development & Technical Discussion / Newbie Tech question - Bitcoin payments send and confirm on: April 03, 2014, 02:36:23 AM
Hi,

I am a technical noob trying to understand the tech aspects of Bitcoin(wallets, transactions, security etc).

My questions are in RED below and it would be reallyhelpful if someone can direct me to relevant resoruces to learn more.

I learnt the technical mechanics behind generating a hot wallet recently from my readings.

The next step is to understand how does the ownership of bitcoins is transferred. I read up the white paper and came up with this:

Suppose A wants to send Bitcoins to B. pubA,pubB be the public keys of A and B. privA,privB be the private keys of A and B.
Bitcoin is the transaction that was received by A. Let it be m.
G is the base point

privA is a random number in [1,n-1] and pubA =privA X G , X is ECC multiplication

A does the following:

Signs the bitcoin transaction as follows

1. Calculate e=SHA256(m)
2. Let Z be the Ln leftmost bits of e, where Ln is the bit length of group order n.
Now I understand n as defined in the specifications and is a very large number, then are we picking the leftmost n bits of e here?
 I am kinda confused here...Any help  Huh

3.Select a random integer k from [1,n-1]
4. Calculate (x1,y1)=k X G  
5. Calculate r1=x1 mod(n). If r1=0 go to step 3.
6. Calculate s1=k^(-1) * (z+r1(privA)) mod(n) . If s1=0 go to step 3.
7. The signature is pair (r1,s1)

A also signs the pubB using the same method above to produce (r2,s2).

A then transmits m appended with r1,s1,r2,s2 to the network. Let this transaction be represented as M1.

How are the signatures appended to the original transactions? Are these just bitwise appends? I am not sure at all

Now once B receives this message from the network, it should be able to use privB to verify the incoming transaction.


B does the following:

1. Verify r1,s1,r2,s2 are valid integers in [1,n-1].
2. Calculate e=SHA256(m)
3. Let Z be the Ln leftmost bits of e, where Ln is the bit length of group order n.
4. Calculate w1=s1^(-1)  mod n
5. Calculate u11=zw1 mod n and u12=r1w1 mod n.
6. Calculate curve point (x1,y1)= u11 X G + u12 X pubA
7. Signature is valid if r1=x1 mod(n)

Repeat steps 4-7 for r2,s2.

If both signatures match, then M1 is the new transaction and new bitcoin.


This is my understanding so far. Please help me understand this better by pointing mistakes.

Thanks a ton.

Kittu
11  Bitcoin / Meetups / Bitcoin Conference New York..Who is signed up? on: April 01, 2014, 10:29:43 PM
I know there is a bitcoin conference taking place in NY in the coming week. I plan to attend and was wondering if anyone else around would like to catch up too.

Moderators: Not sure if the thread is  under correct category. If it isn't, please move.

Cheers!
12  Economy / Auctions / Mint out of box Macbook Pro 13" on: March 30, 2014, 09:29:10 PM
I recently bought Macbook Pro 13" with retina display and have to sell it due to some unforseen expenses. Pics attached for the device I have. The market price of this piece is $1500+taxes. March 2014 model.

13 inch screen, Retina Display
2.4GHz dual-core Intel Core i5
Turbo Boost up to 2.9GHz
8GB 1600MHz memory RAM
256GB PCIe-based flash storage
Intel Iris Graphics

Starting Bid at: 2.0 BTC
Buy Now Price: 2.7 BTC






The Buyer can choose to use escrow of his choice and will pay the escrow fee. I will ship via UPS.

PM me if you are on east coast in USA and we may be able to exchange this offline.

I reserve the right to cancel the auction either due to an offline deal or not finding a suitable price of Bitcoin volatility.
13  Economy / Services / Looking for Developers - Cryptos/BTC/Altcoins on: March 20, 2014, 08:03:10 PM
Hello all,

We are looking for developers who are experienced in coding in the crypto currencies(not just Bitcoin) as well as with web development and integration.

Please write to me with the following details:

Your Name, Location and Email(you can PM me email if you don't want it public here).
Technologies that you are proficient in.
Any previous experience/knowledge/projects on the following. While it is not mandatory to have all the experience, the more exp, the better candidature:
  
  • Wallet address maintenance and generation.
  • Security of hot wallets.
  • Cold storage of coins and allied methods
  • Web Design and User Interface experience
  • Building secure web services for data transmission and storage(non crypto)
Your current engagements (to see if we might run into conflict of interests).


Though we are open to entries from around the globe, we are more interested in folks in USA.

I will write back with project details to those with relevant

Cheers!
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