I did a little research and now I want to answer my question myself.
Bitcoin Core downloads blocks as they come from the network.
If errors occur or the client crashes, the incorrect or incomplete blocks remain in the BLK file and are not cleaned up.
The faulty block is then simply downloaded again and saved in a new BLK file.
My blockchain parser must now recognize these errors and react accordingly. The error handling is now somewhat more demanding.
Topic: Problem in blk00000.dat file. (Read 195 times)
I do that. The parser crashes between. Because "compact-size" contains wrong values.
How am I supposed to do the analyzed, the parser crashes there directly.
Then you should make your parser read until it reaches the magic bytes ..
I really don't understand that.
This "rubbish block" is in my blk00000.dat.
How am I supposed to do the analyzed, the parser crashes there directly.
Why is such rubbish something on the blockchain?
This "rubbish block" is in my blk00000.dat.
How am I supposed to do the analyzed, the parser crashes there directly.
Code:
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Why is such rubbish something on the blockchain?
After the first block, there are 8 additional zero-byes.
Between the following blocks, these 8 bytes are not included.
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
So why are there 8 zero bytes?
Hi,Between the following blocks, these 8 bytes are not included.
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
So why are there 8 zero bytes?
I don't know for sure about this block, but I know that when you parse the block chain you need to read until you read the magic bytes (as it's common to find additionnal bytes between two blocks in blkxxxx.dat).
After the first block, there are 8 additional zero-byes.
Between the following blocks, these 8 bytes are not included.
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
So why are there 8 zero bytes?
Between the following blocks, these 8 bytes are not included.
F9BEB4D91D010000010000000000000000000000000000000000000000000000000000000000000 0000000003BA3EDFD7A7B12B27AC72C3E67768F617FC81BC3888A51323A9FB8AA4B1E5E4A29AB5F 49FFFF001D1DAC2B7C0101000000010000000000000000000000000000000000000000000000000 000000000000000FFFFFFFF4D04FFFF001D0104455468652054696D65732030332F4A616E2F3230 3039204368616E63656C6C6F72206F6E206272696E6B206F66207365636F6E64206261696C6F757 420666F722062616E6B73FFFFFFFF0100F2052A01000000434104678AFDB0FE5548271967F1A671 30B7105CD6A828E03909A67962E0EA1F61DEB649F6BC3F4CEF38C4F35504E51EC112DE5C384DF7B A0B8D578A4C702B6BF11D5FAC00000000 0000000000000000 F9BEB4D9D7000000010000006FE28C0AB6F1B372C1A6A246AE63F74F931E8365E15A089C68D6190 000000000982051FD1E4BA744BBBE680E1FEE14677BA1A3C3540BF7B1CDB606E857233E0E61BC66 49FFFF001D01E362990101000000010000000000000000000000000000000000000000000000000 000000000000000FFFFFFFF0704FFFF001D0104FFFFFFFF0100F2052A0100000043410496B538E8 53519C726A2C91E61EC11600AE1390813A627C66FB8BE7947BE63C52DA7589379515D4E0A604F81 41781E62294721166BF621E73A82CBF2342C858EEAC
So why are there 8 zero bytes?
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