3
votes
2answers
66 views

What will happen when nLockTime is used along with Counterparty transactions

I heard that Counterparty cannot handle lock time, but I cannot understand why. What will happen when we use nLockTime in a transaction which includes Counterparty transactions?
0
votes
2answers
49 views

Bought bitcoins without a wallet. How do I spend them?

I bought some bitcoins from Bittylicious a few days ago. I didn't have a wallet at the time but Bitcoin Core wallet has finally synchronized. I have the transaction ID and address and everything I ...
0
votes
2answers
29 views

How to use NBitcoin for HD Wallet

I'm using c# NBitcoin to generate master key at an offline server ExtKey privateKey = new ExtKey("[My seed]"); ExtPubKey pubKey = privateKey.Neuter(); I will need to give the online server the ...
3
votes
2answers
42 views

Why is the difficulty adjustment restricted to a factor of 4?

What does this protect against? And why 4 in particular? I know an adjustment of this magnitude is not likely to take place at this stage, but I'm wondering why this was implemented in the first ...
1
vote
1answer
20 views

Why is the target stored in compact form in the block header?

Why is the target converted to "Bits" and not stored in full in the block header? For example, why: { "hash" : "000000000003ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506", "height" : 100000, ...
1
vote
2answers
26 views

Can I replace the fans in a Zeus Hurricane x3?

This thing sounds like there is a jet waiting to take off in my office. Can I replace the fans with quieter ones? If so, can you recommend which fans to buy to replace the stock ones? Thanks!!
1
vote
0answers
15 views

Do any router custom firmwares enable Bitcoin for anonymous usage?

I want to find Wifi firmware where I can sell my internet service with anyone who needs to use it... ideally paying in an Altcoin or Bitcoin. Are there any router modifications that support a wallet ...
0
votes
1answer
33 views

sendtoaddress questions

Does sendtoaddress automatically collect as many unspent outputs as needed? Is there any way to specify the from address? How is the fee computed? I just tested with two transactions: a) 0.0001 xbt, ...
3
votes
2answers
118 views

If Bitcoin is traceable, how bitcoin scams are exist?

Let me write an example. A hustler give some people his bitcoin address and these people transfer some bitcoins to his wallet. According to the term, which says that bitcoin transaction is traceable ...
2
votes
1answer
32 views

Do new SIGHASH types need a hard fork or a soft fork?

There have been a few new sighash types proposed. SIGHASH_NORMALIZED : Use a 'normalized' TXID in the inputs when serializing for signing. This normalized transaction id is calculated by removing ...
1
vote
2answers
111 views

BTC/hashes/second rates for various pools

Do all pools have the same average BTC/hashes/second rates (for individual members of the pool)? For example, this profitability calculator says 4 Th/s hash rates will produce 0.04 BTC per day, yet ...
7
votes
2answers
97 views

What technical reasons exist for off-chain transactions?

I'm trying to get a grasp on off-chain transactions, as they seem more common than I initially realized but they are not the way that I originally perceived bitcoin being used as an outsider looking ...
3
votes
1answer
46 views

Bitcoind doesn't add miner fee

How do I make sure bitcoind's RPC call sendtoaddress adds miner fees to transactions? Tried adding to our bitcoin.conf file: mintxfee=0.0001 But some of the transactions still won't get any miner ...
1
vote
1answer
43 views

Buying bitcoins with chinese RMB

I know a Chinese citizens have a limit of 50 thousand dollars they can send abroad, yearly. I was wondering if it is possible to buy bitcoins in an exchange like btcchina and then sell them back in ...
1
vote
1answer
29 views

How do I open my RPC console?

Someone just asked me to open the RPC console, as part of debugging something else. How do I do that? I'm using Bitcoin-Qt.
2
votes
1answer
48 views

Is it possible to change an output of a partially signed transaction?

In step 5 of the procedure described in https://en.bitcoin.it/wiki/Smart_Property#Theory, the buyer creates a partially signed transaction. Will the seller be able to change an output prior to signing ...
0
votes
3answers
38 views

Access to RPC console

I am new to Bitcoin, can anyone tell me how I can access to my RPC console and type in commands. I am using Bitcoin Core on my PC. If there is a tutorial for beginners to access to RPC please notify ...
1
vote
1answer
47 views

transfer Bitcoin without synchronizing Bitcoin core

I installed Bitcoin core recently but its not synchronizing right now. I sent one address from file menu like this below to one of my friend and he is send me some Bitcoin ...
1
vote
1answer
18 views

From mining to sending via RPC

Assuming that there is a magical mineblocks RPC command that can mine X blocks on demand, what is the complete set of command line commands to start a client, mine my coins to a specific address, see ...
0
votes
1answer
24 views

Hybrid e-wallets

I am quite confused regarding working of hybrid e-wallets..If private keys are stored on user's browser, then what is the purpose of involving a hosted web service... Can someone please answer my ...
4
votes
2answers
117 views

How can services that use the bitcoin blockchain help secure it?

There are many projects being worked on that involve using the bitcoin blockchain for its public verifiability and immutability. A few examples would be Counterparty, Medici, Factom, etc. But each use ...
0
votes
1answer
39 views

Which security threats in P2PKH lead to the use of P2SH?

To steal a P2PKH output you would have to find the private key of the public key that generated the hash used in the tx. This is impossible to do in a feasible timespan, therefore making the tx ...
0
votes
0answers
20 views

Is there a list of NXT Forging Pools for mining? And what is a feasible amount to mine/forge with?

Is there a list of NXT forging pools that are active with large amount of forgers? Which one is the most popular? Also what is a feasible amount to forge/mine with?
0
votes
1answer
45 views

How can I list my mined coins using RPC? And spend them?

I've mined a few blocks on a blockchain, and I'm trying to figure how to actually see them. What is the correct RPC command ? I've managed to see all the coinbase transactions thanks to ...
0
votes
0answers
29 views

How to do a Hard Fork in a Quark Coin?

Good Day, I am reviving a dead Quark Coin named Particle (XPR), I have implemented changes (MAJOR) so how to do a Hard Fork based on Blocks so the new changes take place without changing the Genesis ...
0
votes
0answers
14 views

Why transaction with outputs of less than ฿0.00005460 rejected in bitcoin [duplicate]

I have created a raw transaction with the following hexstring which decodes to f2b64215963f6b1492be89765ac0e8181ca334e59c9235c2b271f96dd7e318cd and I am trying to send 0.0002 btc it is rejected with ...
0
votes
0answers
21 views

Is it possible to import transaction history from an old electrum wallet to a new electrum wallet?

I see there is an option to export history but no option to import history. It would be nice to keep all my history in one wallet. Thx.
1
vote
0answers
10 views

How does this patent affect Bitcoin? [migrated]

We found a patent that seems to cover sending and receiving funds via Bitcoin - how does this affect Bitcoin and Bitcoin based companies ? http://www.google.com/patents/US20080195499 "A system ...
1
vote
2answers
34 views

Can bitcoin-qt use imported address as a change address?

If I import a private key into a bitcoin-qt wallet, is it possible that some day some transaction I send from the wallet will use its pair address (the bitcoin address created from this private key ) ...
2
votes
1answer
110 views

Why do some outputs have a zero value and no address?

What does it mean when an output has a value of zero and no address? I'm looking at some fairly recent transactions, and I don't understand what this means. Here's an example: ...
1
vote
3answers
101 views

What prevented NXT from being distributed the same way bitcoins are?

As Nxt's generating accounts receive now the transaction fees of the transactions included in the block they forged, it would be possible to add some new NXT to the balance of the generating account, ...
0
votes
1answer
22 views

How to set TXID in rawtransaction?

My question is if I can set the TXID in a raw transaction and send it after it with 'sendrawtransaction' (from the qt console)? If not, is there a way to do it? And if there is a way, does it means I ...
3
votes
1answer
40 views

What other whitepapers are there for coin distribution models like POW (proof of work) and POS (proof of stake)?

I'm looking for other types of distribution models for crypto coins that are like POW (proof of work) and POS (proof of stake). I'm assuming these are a type of distribution model for coins, or is ...
1
vote
2answers
44 views

How to create the <sig> <PubK> part in “scriptSig”?

I've decoderawtransaction and see in the vin part a "scriptSig" ,which I believe to be the "unlocking script" . Assuming I have the private key in a paper wallet and someone send me transaction to ...
0
votes
1answer
35 views

Unable to receive/preview funds due to un-synced wallet [duplicate]

I bought bitcoins and sent them to the wallet, however the wallet is not synchronized and as a result I cannot see my bitcoins. Will I be able to see them as soon as the synchronization process ...
2
votes
1answer
53 views

Are transactions in a block decided by mining pool operator?

My assumptions: Most pools have an operator. All individual miners part of the pool work on block with address of the coinbase transaction owned by pool operator. pool operator gets all the bitcoins ...
1
vote
1answer
17 views

Armory 0.93 on Testnet: consistent unconfirmed Txs sent from connected Bitcoin-cli (log attached)

Running Armory (0.93.0.82) on Win7 x64 with the following flags: "C:\Program Files (x86)\Armory\ArmoryQt.exe" --testnet --datadir=d:\data\armory\testnet3 --satoshi-datadir="d:\data\bitcoincore" ...
1
vote
1answer
32 views

Using bitcoind JSON-RPC, how to get transaction from input address?

I have an address from which all unspent txouts were used in a single transaction. How can I find out what transaction was that? In my node instance, listtransactions will not list addresses that ...
3
votes
3answers
63 views

Testing blockchain forks

I want to test if a service can manage a blockchain fork. However there is no way to get bitcoind to create test forks under the regtest mode. I've tried modifying it to generate blocks with arbitrary ...
1
vote
1answer
32 views

Reward system bitcoin

I'm not entirely sure how the reward system in Bitcoin works. So, every 10 minutes a block is solved and 25 bitcoins are rewarded to a miner (or group). This happens in proportion to the amount of ...
0
votes
1answer
73 views

Bitcoin Game Theory Analysis

I'm looking to analyse bitcoin for a (rather introductory, low-level) game theory course. Game theory concepts I'd like to explore with regard to bitcoin: strategic games with ordinal preferences and ...
1
vote
1answer
26 views

thin-client remote node lying through omission

is there a way for a non-full node (ie a node which does not contain the full blockchain) to know when it has received all transactions associated with an address? i understand that it is possible for ...
1
vote
1answer
39 views

Why did Litecoin choose the scrypt factors that they did?

Litecoin uses the scrypt factors (N=1024, r=1, p=1) This means that each hashing thread takes 128kB of memory. The scrypt paper recommends r=8. Colin Percival, the creator of scrypt, has said: Q: ...
0
votes
2answers
53 views

Can I build a mining ASIC from parts I find online?

I've noticed that there are all kinds of cards, blades, and other parts of ASIC mining rigs for sale on eBay. Is it possible I could buy some cards and blades and build my own high end mining ASIC ...
0
votes
1answer
67 views

Where can I find a full list of Bitcoin mining hardware?

I want to know where I can find a full list of Bitcoin mining hardware. I don't want a list of the most profitable hardware, I just want a list with the greatest number of Bitcoin miners (don't care ...
0
votes
2answers
41 views

How do I get to the value in the 'scriptPubKey' part of the transaction ?

How do I get to the value in the 'scriptPubKey' part of the transaction ? The sender knows only the address (1A3XjcuZmcszX2tGoVn1TrMNchuHwdAxZV) so how did he get into ...
0
votes
1answer
31 views

How to read a tx's comment?

How can I retrieve the comment field from a payment transaction that I made from my QT wallet? I can see the comment when I click "Show transaction details" in my QT but I cannot find a way to do ...
2
votes
2answers
89 views

What Ripple API libraries are available?

I am wondering, what libraries are out there for communicating with Ripple through its API (either websocket or JSON RPC)?
0
votes
1answer
36 views

What version byte will produce a Base58 encoding starting with X?

What is the Value of X in Base58? The Problem is when I referred to this table: https://en.bitcoin.it/wiki/Base58Check_encoding I in the end come up with D when I used 30, but I want X, so what will ...
4
votes
2answers
128 views

Is there a proof of work system which takes significantly more memory to generate than it does to verify?

Litecoin resists GPU speedup by using an scrypt-based hashing function that takes some amount of memory to generate and verify. The problem with this is that the r parameter needs to be set high ...

15 30 50 per page