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1  Alternate cryptocurrencies / Marketplace (Altcoins) / SiaFund Trade with Skatebird on: November 04, 2017, 10:06:11 PM
This thread is for my SiaFund trades with Skatebird
2  Economy / Reputation / xibeijan's reputation thread on: June 25, 2017, 12:38:25 PM
first trade in recent times here -> https://bitcointalk.org/index.php?topic=1979400

another trade here -> https://bitcointalk.org/index.php?topic=1981290
3  Economy / Reputation / xibeijan's reputation thread on: June 22, 2017, 10:19:30 AM
first trade in recent times here -> https://bitcointalk.org/index.php?topic=1979400.
4  Bitcoin / Bitcoin Technical Support / Help - importing private key - broke it on: February 09, 2014, 10:07:11 AM
Quote
Import Private key(s)

The last command unlocked your wallet temporarily for 120 seconds, during which time you must import your private keys. Since private keys can be as important as your passphrase, you may want to use the same techniques as above to prevent their being recorded in bash history (bash variable or space before the command):
(space)bitcoind importprivkey "5yourveryveryveryverylongprivatekeystring" "my-new-key"  # "my-new-key" is a label for the key/address pair and is optional
The importing process is now started. Bitcoind will rescan the entire block data to ensure this key has not been used before. This process will take from one to two minutes, depending on your CPU performance. DO NOT abort it before finishing!

I have stupidly aborted an importprivkey operation.  Sad

Now I cannot add the private key.  Returns error: {"code":-4,"message":"Error adding key to wallet"}

Is my wallet now damaged?  How can I fix this?
5  Alternate cryptocurrencies / Altcoin Discussion / Nxt - Mining profitability on: November 28, 2013, 09:09:30 AM
Nxt will implement colored coins, a decentralised blockchain based stock exchange.  You will be able to exchange altcoins using the Nxt block chain, i.e., NXT will be the base currency for a massive p2p on-line alt coin stock exchange.

Reference: https://bitcointalk.org/index.php?topic=345619.0

Nxt is purely proof-of-stake and, therefore, requires no CPU for mining.  The block reward is the transaction fee.  Currently, NXT requires a transaction fee of at least 1 NXT for any transaction.

The number of blocks a miner can mine depends on the number of NXT the miner owns (i.e., his/her stake).

The formula for the number of blocks a miner can mine is

blocks_per_day(STAKE) = STAKE*(AVG_BASE_TARGET/100)/694444
= STAKE*AVG_BASE_TARGET/69444400

STAKE is the number of NXT you own.

The AVG_BASE_TARGET is a network parameter that varies over time that represents how much of the money supply is active for POS mining.  You get this number by averaging the last K base targets (the little red and white target icon under "Recent blocks").

Reference: https://bitcointalk.org/index.php?topic=345619.msg3726410#msg3726410

Now the question is: how many Nxt could you expect to mine per day if Nxt becomes the defacto online exchange for crypto currency?

Each block will contain multiple Nxt, at least 1 for each transaction.  So how many transaction will there be per block?  Recent stats on the bitcoin block chain show 98753 transactions over the last 177.00 blocks.  So, that's about 557 transactions per block.

Reference: http://blockchain.info/stats

But Nxt has 1440 blocks per day (bitcoin has should have 144).  So, we can divide 98753 by the number of Nxt blocks per day: 98753/1440 = 68.57 Nxt transactions per block.

So, you could expect 68.57 Nxt transactions per block.  If Nxt is traded as much as BTC.  It could actually be more though, because Nxt could facilitate trading across all different types of crypto currency.

Our estimate for the amount of NXT per day is

nxt_per_day(STAKE) = 68.57*blocks_per_day(STAKE)

====

So for AVG_BASE_TARGET = 1000 and STAKE = 1000000

blocks_per_day(1000000) = STAKE*AVG_BASE_TARGET/69444400
= 1000000*1000/69444400 = 14.4 Nxt blocks / day

nxt_per_day(1000000) = 68.57*14.4 = 987 NXT /day

====

But, how much is 987 NXT worth?  How much could you earn per day?

Well what are the average transactions fees mined from a single bitcoin transaction?

Total transaction fees over the last 177 bitcoin blocks is 31.825982 BTC.  So that's 31.825982/98753 = 0.000322 BTC / transaction.

Reference: http://blockchain.info/stats

Nxt has 68.57 transactions per block, so we can calculate the average BTC value per Nxt block: 0.000322*68.75 = 0.022 BTC / Nxt block

Right now that is about 0.022 * 1080 =  $23.76 / next block.

So, if you get 14.4 Nxt blocks per day, then that is about $342 / day or about $10,000 / month.

There are a lot of assumptions here, but the basic parameters guessed at are:

- STAKE
- AVG_BASE_TARGET
- NUMBER OF TRANSACTIONS PER NXT BLOCK (estimated from BTC)
- VALUE OF MINIMUM NXT TRANSACTION FEE (estimated from BTC)

It will be interesting to hear your replies and all the errors you spot in my quick calculations.
6  Alternate cryptocurrencies / Altcoin Discussion / [WTS] Selling NXT @ 0.00005 BTC on: November 25, 2013, 10:59:13 PM
I've got a portion of Nxt for sale.
7  Alternate cryptocurrencies / Altcoin Discussion / [WTS] Selling NXT @ 0.00001 BTC on: November 25, 2013, 01:21:44 PM
I have a portion of Nxt to sell if anyone's interested.
8  Alternate cryptocurrencies / Altcoin Discussion / [WTB] 1,500 Worldcoin for 30,000 Goldcoin on: May 16, 2013, 08:38:22 AM
PM me offers.
9  Alternate cryptocurrencies / Altcoin Discussion / [WTS] 600 FC2 for 6 LTC on: May 14, 2013, 09:49:54 PM
PM me your offer
10  Alternate cryptocurrencies / Altcoin Discussion / [WTS] YAC - 14 LTC per 1k (I have 10k to sell) on: May 08, 2013, 10:33:34 AM
Hi - I am selling up to 10k YAC for 140 LTC.  That's 0.014 LTC per YAC.

Message me either here or PM if you're interested.

We can do it a small chunk at a time.

Cheers.
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