How to open local bitcoin database
berkeley-db, bitcoin
Solution
What are you trying to extract? Only the wallet.dat file is Berkeley database.
Blocks are stored one after the other in the blkxxxxx.dat files with four bytes representing a network identifier and four bytes giving the block size, before each block.
An index for unspent outputs in stored as a leveldb database.
Knowing what type of information you are looking for would help.
Problem
I am trying to extract data from local bitcoin database. As I know, bitcoin-qt is using BerkeleyDB. I have installed BerkleyDB from Oracle web site, and found there a DLL for .NET: `libdb_dotnet60.dll`. I am trying to open a file, but I get a `DatabaseException`. Here is my code: ``` using BerkeleyDB; class Program { static void Main(string[] args) { var btreeConfig = new BTreeDatabaseConfig(); var btreeDb = BTreeDatabase.Open(@"c:\Users\<user>\AppData\Roaming\Bitcoin\blocks\blk00000.dat", btreeConfig); } } ``` Does anyone have examples how to work with a Bitcoin database (in any other language)?