6 votes
Accepted

How are validity flags in block index set in concurrent blocks when one of them is chosen?

What will happen to the index entry for the abandoned block? Nothing. The block index contains information about the available blocks and branches, and their validity. It does not contain any ...
user avatar
6 votes
Accepted

Does local blockchain database (blkXXXXX.dat) contain abandoned forks forever?

When my node realizes that the given block needs to be abandoned - does it leave it in the database or replace the block with a valid one? It remains on disk along with its entry in the block index ...
user avatar
  • 61.4k
4 votes

Does Bitcoin fee depend on amount?

No. Fees depend on the size of the transaction (measured in bytes), and can start at 1 satoshi per byte. So. if your transaction weighs 400 bytes, at 1 sat / byte you’ll pay 400 sats. The size of the ...
user avatar
  • 186
4 votes
Accepted

Bitcoin blockchain verification on download

It depends what kind of software you're talking about. A full node, by definition, verifies all consensus rules for newly received blocks and their transactions, including: Proof of work Difficulty ...
user avatar
2 votes

Does Bitcoin fee depend on amount?

A Bitcoin transaction is a combination of one or more inputs and one or more outputs. Each input is itself an out put of a previous transaction. So it is not liquid. I think it is good to think of ...
user avatar

Only top scored, non community-wiki answers of a minimum length are eligible