Hate to write this, but I feel I should do this, so that at least this guy will get noticed by other traders.

Thing is similar to this: https://bitcointalk.org/index.php?topic=201257.0 (so I really hate to tell this story)

I dealt with two guys at the same time and both of them are scammers! How careless and hurry am I. The things are the same: I sent BTC, and received nothing.

this time, the transaction is:
https://blockchain.info/tx/8ebed68265709e254dcb7a1503f8c9d06cfffd0dde40f75cc7dd4ee6d7ad972a
22 BTC are lost. OK, it's not too much, but it's really worth something!

The following images shows this thing.



Anyone who knows how sad am I please don't say "wow, how rich are you, please donate", that'll make me sadder.

I wanted to buy some YAC, and Oldsport gave me an offer of 5.5BTC per k YAC. He told me he is a trustworthy one by giving me a web of trust link for reference (http://bitcoin-otc.com/viewratingdetail.php?nick=oldsport).

I was too careless that I trusted him and send him 15.599+ BTC for buying 28363 YAC, with the following transaction:
https://blockchain.info/tx/3816f40c21fcbab2c63fce34830f36bc5e5ce395a79c4a33a1ba5632cebad5ce

my YAC address is Y6esKzen4ZRgemm1egkb5EdWJVFKgM6P56,
Until now, I haven't receive any payment.

However, he has showed up before I wrote this scam accusation in this thread:
https://bitcointalk.org/index.php?topic=201003.0

I'll try to take some snapshots of the pms and upload them. Admins can check if they are true.

After I send my coins to them, they just disappeared.
I'll wait for one day or so, and will update this topic later. I hope they are just out for a while
If you know any of them, please leave a word.

[update]They have already appeared on other threads, but none of them payed me until now. Both of them are scammers, confirmed.

DO NOT TRADE WITH THEM

I wish I have read this post first: [Beware of new members with alt coin trades. Always escrow.]

First & second trade on bitcointalk. Feels really upset.  

I really don't know how to use this exchange: https://docs.google.com/spreadsheet/ccc?key=0AqP7ysgWb2ZHdDV2aXBXNURBZnpmYjhhN0ZmMDBGOWc#gid=0  

I plan to buy 10k-30k YAC in total with my BTC.  Anyone want to sell?  Price can be negotiated.

Hi there,

I found these apis from blockchain.info helpful: http://blockchain.info/en/api/blockchain_wallet_api

But instead of having a plain text url using HTTP GET like this:
https://blockchain.info/merchant/$guid/payment?password=$main_password&second_password=$second_password&to=$address&amount=$amount&from=$from&shared=$shared&fee=$fee¬e=$note

I prefer to have a HTTP POST method like:
https://blockchain.info/merchant/$guid/payment (all parameters are in POST payload)

There are several reasons for this:
1 more secure (although it's in https, but some browsers may send the urls back to build their search engine, you'll never know)
2 no need to consider the length of my url when dealing with "send many" (really, this bothers me a lot)

So, my question is, is this HTTP POST feature available? Thanks. I really need this feature, and it's should be very easy to add if it's not supported.

Here's my settings:

In My Wallet->Notifications, I checked "HTTP Notifications", and provide a callback url like "http://www.mysite.com/wallet/new-transaction?secret=mysecret".  I chose "Receives Bitcoins" in "When My Wallet" section, and "Instantly" in "After confirmations" section.

I send some Bitcoins to one of my addresses in "My Wallet" account, but the callback url is never called.

My service has not been published, it's not popular at all, so it's barely possible to be blocked. Can anyone help me? I need these notifications to make my site seems alive.

I'm trying to generate an new address by this:
https://blockchain.info/merchant/$guid/new_address?password=$main_password&second_password=$second_password&label=$label

However, I always get the following error:
requests.exceptions.SSLError: [Errno 1] _ssl.c:503: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

my Python codes are like this:

Code:

import requests
import json

guid = "XXXX"
url = "https://blockchain.info/merchant/%s/new_address" % guid
params = dict(
     password="main_pwd",
     second_password="snd_pwd",
     label="label"
)
resp = requests.get(url, params=params)
data = json.load(resp)

the exception raises when executing this line:

Code:

resp = requests.get(url, params=params)

Any help would be very much appreciated!!

[Send Many Transactions]

The case is, I have several addresses for users to send Bitcoin in, and also I need to send Bitcoin out to many receivers at once regardless of which address(es) it would use.

From the wallet API (https://blockchain.info/api/blockchain_wallet_api) I see the following api is close to my need:

Send Many Transactions

https://blockchain.info/merchant/$guid/sendmany?password=$main_password&second_password=$second_password&recipients=$recipients&anonymous=$anonymous&fee=$fee

$main_password Your Main My wallet password
$second_password Your second My Wallet password if double encryption is enabled.
$recipients Is a JSON Object using Bitcoin Addresses as keys and the amounts to send as values (See below).
$from Send from a specific Bitcoin Address
$anonymous "true" or "false" indicating whether the transaction should be sent through the a mixer. Fees apply. (Optional)
$fee Transaction fee value in satoshi (Must be greater than default fee) (Optional)
$note A public note to include with the transaction (Optional)


The "from" parameter is an Bitcoin "address", not an "account", or the whole "wallet". In my case, no single address would have sufficient balance to send the payment, but the whole wallet would have.

How should I deal with this case with blockchain.info? When use bitcoind, I know that I could do this by sendmany command.

[Why we want to gamble on difficulty?]

Some people may already know that we are working on building a platform for gambling on bitcoin’s difficulty value, I hope this post may help more people know what we are doing and why we are doing this. Generally speaking, we invented a game about gambling on the future difficulty value. (Detailed information about difficulty, click here.)

Why we want to gamble on difficulty?
Gambling by using bitcoin or on bitcoin is not a novel idea, and we guess that Satoshi Dice is known here. However, Satoshi Dice depends on pure luck. This kind of games doesn’t sound interesting for us who believe that the fun of winning a game originates from how to outmaneuver your opponents, not merely depends on luck. Therefore, we want to create a more interesting gambling game like horse racing. If you know much about the horses and the riders in the race, your chance of winning is higher than others. Luck is also important, since unpredictable things will happen in the real race.

Mining difficulty in bitcoin network will fluctuate along time like stocks’ prices. Yet unlike random number, difficulty value is determined by us, who are watching the bitcoin network. So we believe that betting and predicting on difficulty value is more interesting than guessing random number on Satoshi Dice. Therefore, why not making a game that let us bet on the difficulty? Currently we are building a platform for people to gamble on future bitcoin network difficulty value.

Details – How to play?
Difficulty value is a number we can get from every bitcoin block. Everybody can check the difficulty value. It’s open and transparent to everyone, e.g. you may check difficulty value here. Difficulty value changes every 2016 blocks, approximately every 2 weeks. So beginning with the first block which has different difficulty value from previous blocks, to the last block that still holds the same difficulty value as before, we call that those 2016 blocks form a round. Blocks in the same round share the same difficulty value. People can bet on every future round’s difficulty value. When you are betting, you should specify your round, your estimated difficulty value, and your betting amount. We will collect all the bets on the same round to form a pool, that is to say, every round will have a pool, which composes of all the money betting on that round. Noting that next round’s difficulty value is calculated by information of current round, everyone can easily deduce the exact difficulty value right before the beginning of next round. So we only allow betting on the round that will begin in at least two weeks, that is to say, you can’t bet on next round, and the available rounds for betting start from the round after next round.

When to pay out?
The payout time is in the beginning of every round. Once the difficulty is fixed for a round, we will start to pay out the money in the corresponding pool.

What’s our paying out strategy?
Generally, we follow below three principles.

• The earlier you make your bet, the bigger share you win from the pool.
• The closer your guess is to actual difficulty, the bigger share you win from the pool.
• The greater your money in your bet, the bigger share you get back from the pool.

The first rule is to award players who are willing to take risk to make a long-term guess. The more risk you take, the more gain you should get.

The second rule is to award players who have keen sense of bitcoin computing power. The smarter and luckier you are, the more gain you should get.

The third rule is to award people who are willing to take risk by putting a big fortune. The higher risk you take the more gain you should get. Also, this rule is fair for all the participants. If you are betting on a big fortune while others only put one nickel, it is unfair to lose all your bets to others who are not brave enough to take risks.

If you are interested in details of how to pay out, this link leads to payout formula we designed according to the principles mentioned above. Details on Payout Formulas

What’s our business model?
We maintain the gambling platform not for free. We will get a small percent from every pool as house fee, e.g. 3%.

Current progress
Currently we are polishing the front-end of the website, and the back-end part is already completed. Our server is built on Google App Engine, therefore, security and scalability won’t be big problems for us. The estimated date is on Feb.

Should you have any comments or questions or suggestions, please kindly let us know. Usually we will be online from 7:00am to 11:00 am EST.

Hi,

I come up with an idea and want to discuss it with everyone.

We know PPCoin uses coin age for network security. I think it is also better to use coin-age for minting control.

Reasons listed below:
1 Using coin age, the total amount of minting can be more predictable than using hashrate
   Total network hashrate is greatly affected by miners' focus, more than Moore's low.
   We can expect that total coin age in the network is linear to the total amount of PPCoin. So controlling the total amount of PPCoin through coin age will not be too different from through total amount of PPCoin

2 Coin age/average coin age is more related to economic activities, so the minting rate can also be designed to meet economic requirement
   If PPcoin get hot, users will tend to buy/sell bitcoins, so the average coin age will drop, and the minting number will increase; If fewer people run PPCoin, coin age will increase, and the minting number will decrease. This makes the network more stable (isn't it?)

For fairness, every peer should have the same search space to make rich people won't have advantage in this minting process. But it is still energy effective if search space is finite. (This will make things more complex, I need to think it deeper. Any advises?)

I apologize for my English. Hope everyone can understand my intention.

PPCoin is a fantastic alternate coin, I hope we can make it better.

After many hours' effort, bitcoin.exe is built from the latest source, but it just tells database initialization failed. Anyone can tell when is the next release? I really need this fix:
https://github.com/bitcoin/bitcoin/commit/e45d39f9ee9ef776a32d398d973351e7c94f3f38

Don't know if he could see this post. But I'm a newbie, this is the only place I could post. (or it's possible to notify him via other method?)
yesterday I put a bid option on https://ppcexchange.bitparking.com trying to buy some ppcoin, but today I found myself a unregistered user when I was logging in, facing an error like "Username not found".

Hope someone can help me reaching him. Thanks very much!