5 votes

Is there still a digital signature loophole in Bitcoin transactions?

Does the problem of repeating the value r still persist today in Bitcoin transactions? If your question is whether Bitcoin signatures are still vulnerable if their nonces are generated in a bad way: ...
Pieter Wuille's user avatar
2 votes
Accepted

Exact witness requirements for a segwit transaction with P2PKH and P2WPKH inputs

From the BIP141 specification: The witness is a serialization of all witness fields of the transaction. Each txin is associated with a witness field. A witness field starts with a var_int to indicate ...
Lee's user avatar
  • 588
2 votes
Accepted

Why can I not find my transaction in the mempool?

This transaction appears to not be eligible for confirmation because it spends inputs that do not exist. You write that you are using testnet, but neither of the two transactions 21f5…a273 and 2275…...
Murch's user avatar
  • 75.4k
2 votes

Does new transaction in RBF has a txid different from the stuck transaction ? If yes , then isn't it basically creating a new transaction?

In essence, that is exactly what it is: an RBF transaction is simply a new, distinct transaction. The RBF aspect, the rules associated with it, matter however. Full nodes maintain a list of ...
Pieter Wuille's user avatar
2 votes

i have not receive the transaction

You can use any "blockchain explorer" to see that bxd9...2Db3 is not a valid Bitcoin address Bitcoin addresses usually start with 1, 3 or bc1 so it hard to see how you could have generated ...
RedGrittyBrick's user avatar
2 votes
Accepted

How do miners manually add transaction to a block template?

Does it work something like this? No, not really. generateblock is a testing only RPC that actually mines a block using the internal CPU miner, itt does not make a block template. So it's completely ...
Ava Chow's user avatar
  • 70.5k
1 vote

How to estimate how long a transaction will take?

Your transaction is currently about 77 blocks from the top of the mempool. Given that the Runes protocol will become active at the halving height, and that may cause a significant increase in ...
Murch's user avatar
  • 75.4k
1 vote

Questions about sidechain

Can coins from sidechains to be moved to mainnet and to be converted to bitcoin? That seems to be intrinsic to sidechains. Assuming we use the word "move" loosely. According to Blockstream ...
RedGrittyBrick's user avatar

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