6

The issue here is that the two transactions are different, and combinerawtransaction does not operate on different transactions (it apparently just silently does nothing). It sounds like you expect combinerawtransaction to take two separate transactions and create a new one which has the inputs and outputs of both transactions. (or perhaps take two ...


2

You might be interested in my article The Bitcoin Script Language. A part of that is to go into details of the transaction format. Especially helpful is this graphic I've created: To answer the question directly: The first one is called "marker", the second one is called "flag". BIP 144 gives more details: Rationale for not using just a ...


2

I'm sorry to say this is a scam. Put it in dollar terms. Someone is telling you that you've won a surprise $20,000 (not very believable in the first place). But to get it, you have to send $600 for "verification" -- what possible reason could there be for this except to enrich the scammer? They'll never send the $20,000, and you'll be out the $...


1

No, you should not deposit .01 bitcoins. This is well known fraud


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