8
votes
Accepted
If you have the required mining power, is it possible to mine your transaction in the next block without propagating it to the network?
Yes, since miners (pools) construct the blocks they mine, they can insert any valid transactions they want, including transactions that were never broadcasted to the wider network. They don't even ...
- 6,743
4
votes
Accepted
Querying Non-Block Inclusion Evicted Mempool Transactions in Bitcoin Core >25.0
There is no RPC that can provide information about evicted/expired/conflicted mempool transactions.
The reason these mechanisms exists is because the mempool is limited in size (configurable how much)....
- 102k
4
votes
Accepted
How is this transaction valid?
The signature is actually valid. The sighash is 8cc2772af5af61583c5a7ae89f777d3173afa470ce8b1bfa5f8d4b9a54635ccb and you'll find that the signature does indeed validate.
So the question is how is this ...
- 68.6k
4
votes
Accepted
Supposedly six OFAC sanctioned transactions were missing from blocks. Which transactions are these?
The answers to these questions are in the article linked in the tweet you're screenshotting:
Which transactions is this user talking about?
Their txids are:
...
- 102k
2
votes
If you have the required mining power, is it possible to mine your transaction in the next block without propagating it to the network?
To add to Vojtěch's answer, take the point of view of nodes validating blocks on the network. How would they enforce that a transaction must have been propagated before it's included in a block?
Not ...
- 7,097
1
vote
Is it possible to download only a part of the blockchain?
If you write software yourself, with a custom implementation of the P2P protocol, this is certainly possible. Just send getdata messages for just the blocks in the range you want.
No such feature ...
- 102k
1
vote
Accepted
Bitcoin Core RPC for transactions of a new address without rescanning
The fraction of the problem solved for me by using Electrumx server. Electrumx rescan block files and indexed trx history information to the another database. It taken about 3 days. Therefore, I could ...
- 63
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