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0answers
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Bitcoin Historical Price API/Database

I have found many APIs and databases that exist for historical Bitcoin prices but they will only give you data for daily intervals or tick data. Is there an API / database that exists that will ...
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1answer
40 views

How can I read chainstate database?

1) What is the format of the LevelDB databases stored in the database directory? I know there are some custom blockchain parsing libraries, such as this one, but I'm wondering if I can just do a read ...
0
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2answers
30 views

How much binary data (bytes) could I put in a transaction and how?

I know that some people had put text, pdf and images in the blockchain. I wonder which are the limits in order to have a minimum "bytes/btc" value in regarding the blockchain as a permanent database. ...
0
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1answer
87 views

What is current size of various databases in Bitcoin Core as of July 2014?

This question is related to question: What is the database for? What is size in MB of: blockchain itsef - blocks/blk*.dat blocks/index/* chainstate/* blocks/rev*.dat Is the size of chainstate and ...
3
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1answer
76 views

Does Ripple use an RDBMS? If so, which one?

Do Ripple servers use RDBMS? If so, which one? I think I remember reading that Bitcoin uses some sort of file database. Same for Ripple?
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1answer
383 views

Bitcoin stuck, not syncing

I recently converted from Chakra Linux to Opensuse 13.1 without formatting the home partition (I took a chance) and didn't have to do the usual reloading of email, documents and bitcoin started ...
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1answer
45 views

Automated transactions to addresses from database

I want to create a website where people can submit their altcoin address and they receive some for free. The addresses are saved in a MySQL database and the transactions are send from just one ...
5
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1answer
116 views

Are virus signatures a serious threat to the bitcoin network?

I read this in a forum post on another site. Here's my recap. But by "I" I mean me, not the original poster. All transactions over the bitcoin network is stored as raw data forever in the distributed ...
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2answers
167 views

Is there a database of all transactions?

The blockchain is a database of all valid transactions, but is there a company/project that also logs all transactions which were broadcasted, but didn't made it to the chain? Blockchain.info for ...
3
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2answers
95 views

Where are the blocks in the blockchain stored?

I understand that every transaction of bitcoin is stored in a "block" which is then added to the "blockchain". I realize that this is data of some sort that must have a physical location. Where is ...
0
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1answer
49 views

Do transactions reference the containing block of the previous transaction?

According to the wiki, it appears as if the previous transaction's index is referenced but not the block in which it's in. Why? How are transactions stored in the database that doesn't make ...
2
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2answers
236 views

Is Bitcoin database cross platform compatible?

I want to use my Windows 7 Bitcoin database (the block chain I downloaded + my wallets) on Linux (Debian). I run Debian as VirtualBox guest on Windows 7 host and share the Bitcoin data folder ...
2
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0answers
119 views

Meaning of the Tables in the Blockchain Database

I've grabbed "Abe" and have started processing the blockchain into a database, but I can't really find documentation on what the various tables mean / are / contain. Here's the list: abe_lock ...
6
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2answers
296 views

How does a Bitcoin client efficiently change forks?

Occasionally, a Bitcoin client will come across a fork of blocks that is longer than the chain it is currently on. Depending on how often orphaned blocks occur, this could be quite often. When this ...
5
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2answers
2k views

What files do I need to copy to a new computer to prevent having to sync with the network?

I think this used to be the blk0001.dat file, but it seems that the block chain is now (since version ?) moved to the blocks/ folder, containing a lot of blk* files, as well as an index file and ...
9
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1answer
3k views

What is the database for?

I see the block chain is stored according to the block chain format specification. But I also see there is a database, which is currently a leveldb database. Why is the block chain stored in two ...
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4answers
6k views

What is the Merkle root?

The Bitcoin wiki Vocabulary article explains why the Merkle root exists: Every transaction has a hash associated with it. In a block, all of the transaction hashes in the block are themselves ...
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1answer
240 views

What database technology do Bitcoin exchanges use? [closed]

I wonder if they use a relational database like MySQL or do they opt for a NoSQL like CouchDB or MongoDB. The Bitcoinica source code reveals that they used a MySQL database.
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0answers
101 views

Why not keep the database online?

When you install this bitcoin thingy it takes like 6 GB of space from your computer. That's huge. Why isn't there some kind of open source site that stores this info, and the client can access there ...
3
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4answers
520 views

Securing bitcoin addresses in database

I'm working on a service which will require me to store bitcoin payout addresses in my database. This means that a potential attack to my service would be to gain access to the database and replace ...
5
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1answer
125 views

What is the schema of the data stores used by the reference client?

I'm interested in seeing the schema (layout and indexes) that is used in the reference client. Namely wallet.dat, the bk** files and also the in-memory uncommitted tx. Does this exist anywhere for ...
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0answers
567 views

Stuck in “verifying database integrity” [closed]

I restarted my computer and now bitcoin doesnt go further than "verifying database integrity" and staying in until now (about an hour now) also windows tells me that the program isnt responding. ...
1
vote
0answers
684 views

Bitcoin client fails and reports some database recovery error

I am looking for somebody to help me fix my Bitcoin client, it is corrupt, reads : "A fatal error occured. Bitcoin can no longer continue safely and will quit. EXCEPTION: 22DbRunRecoveryException ...
4
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2answers
386 views

Storage of Private Keys

Most web apps that accept bitcoin (whether it's an exchange, a gambling site, etc) provide the user with a public address for depositing bitcoins into their account. How are these web applications ...
5
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2answers
438 views

Is the transaction database ever shortened?

I just downloaded the bitcoin client and the full transaction database and did not fail to notice that it took me more than a day to download and check the transaction database and that it occupies ...
3
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1answer
2k views

Can I regenerate blkindex.dat from blk0001.dat?

My copy of blkindex.dat became corrupted, but I still have the whole blk0001.dat file. Is it possible to reconstruct the blkindex.dat file from the blk0001.dat file or do I have to delete both files ...
2
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1answer
592 views

What user data has been leaked from MtGox's database during June 2011 hack?

What user data has been leaked from MtGox's database during the June 2011 hack? Is the database still available for download anywhere, like it was almost a year ago?