Questions tagged [block]

This tag should be used for questions related to Bitcoin blocks

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votes
1answer
117 views

Can I somehow force bitcoind to do decomposition with getblock?

Can I somehow force bitcoin to include the script with getblock call? I see that here https://github.com/bitcoin/bitcoin/pull/886 and here https://bitcointalk.org/index.php?topic=89725.0 there is ...
13
votes
3answers
7k views

What is the exact formula for calculating transaction fees?

According to the Wiki: If the blocksize is more than 250 kB, transactions get increasingly more expensive as the blocksize approaches the limit of 500 kB. Sending a transaction when the blocksize ...
5
votes
2answers
319 views

How can I cancel and replace a Transaction that never gets confirmed?

According this this WikiPage, a MultiSigTransaction that doesn't include a fee may never get included in a block. Since I've read that replacing Transactions (by version number or any other feature) ...
12
votes
1answer
3k views

Has any illegal data been saved in the Block Chain?

Has any illegal data been saved in the Block Chain, such as an illegal number, or illegal prime?
4
votes
2answers
1k views

Chronological list of transaction ids

Is there a way to get a list of the latest transactions IDs? I know I can watch incoming transaction almost live on http://blockchain.info, but is there a way to download the last 10.000 transaction ...
9
votes
1answer
818 views

Does the synced blockchain always grow in size?

Every time the Bitcoin-Qt is launched, the blockchain syncs to update to its latest state. Does this mean the data stored locally will always grow continously, eating up all available space eventually?...
1
vote
1answer
106 views

What is the difference (or relation) between a Bitcoin “Block” and a GPU workunit called a “Block”

I'm looking at OpenCL and GPU programming and see the term "Block" used to describe a unit of work sent to a GPU. What is the relation between a Bitcoin Block and a GPU workunit called a block? If ...
1
vote
2answers
277 views

how http://blockchain.info/, http://blockexplorer.com/q or http://www.bitcoinmonitor.com/ works [duplicate]

Possible Duplicate: How can I read information from the blockchain? Can anyone tell me from where exactly sites like http://www.bitcoinmonitor.com/ http://blockchain.info/ can't post more ...
5
votes
2answers
569 views

What is the legal money range for a bitcoin transaction?

What is the legal money range for a bitcoin transaction message ? I am guessing that the lower limit is one satoshi but what about an upper limit aside from the maximum block size constraint ?
3
votes
1answer
180 views

Is the current number of confirmations visible somewhere in the raw block?

Is the current number of confirmations visible somewhere in the raw block output created by blockexplorer or blockhain.info? Is this information available in the raw stream or is the number of ...
6
votes
1answer
578 views

what are vin_sz and vout_sz in tx part?

I am trying to understand the raw blocks better: vin_sz and vout_sz are some of the unknowns. does this values (sz=size?) have something to do with a number of confirmations? example: https://...
8
votes
4answers
611 views

Can Bitcoin blocks be organized into shards?

Bitcoin Scalability is a hot topic. In database architecture design data is segmented into shards or the data is partitioned such that it can be spread among large number of machines. In the ...
3
votes
1answer
228 views

Where can I find a graph of average transactions per block over time?

Is there a website where I can view the size of the memory pool over time, or the average number of transactions per block?
3
votes
1answer
369 views

Bitcoind statistics

I need to get some values to find how updated my bitcoind client is. For example, I would like the GUI to tell me: If it is up to date. If not, show blocks/total blocks How many blocks have been ...
12
votes
2answers
2k views

Two blocks, two transactions, same hash

Would a block containing a transaction with an identical hash as a previous transaction be considered valid? That is, if someone made a transaction for generating Bitcoins and solve two blocks with ...
4
votes
1answer
1k views

JSON-RPC getwork data field

I recently tried playing around with the getwork command for JSON-RPC and I'm trying to understand what I got out of it. According to the API Call List wiki entry, the "data" field should contain the ...
5
votes
1answer
223 views

No Account number or Address in listtransactions for generated blocks

I am in the need (for my app development) of having more information printed with the "listtransactions" of the bitcoind daemon. For blocks generated it shows the account as "" and no bitcoin address ...
8
votes
2answers
411 views

Why is the Block Header txn_count field always zero?

According to the Protocol Specification, the txn_count field of a Block Header is always set to 0, why is that? What are the intended future uses of this field?
15
votes
1answer
1k views

How can a non-miner store data in the block?

If I am not a miner and would like to put arbitrary data in the block chain, is there currently any method or protocol to get a miner to add it for me?

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