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Is there a way to use Electrum to double-spend a transaction that is not RBF enabled?
The transaction was made by another wallet that has no RBF support.
I've imported the relevant private key into Electrum and see the pending transaction, but is there a trick for me to cancel it even though I don't have the right-click menu option available due to the absence of the RBF flag?
The transaction was made by another wallet that has no RBF support.
I've imported the relevant private key into Electrum and see the pending transaction, but is there a trick for me to cancel it even though I don't have the right-click menu option available due to the absence of the RBF flag?
Re: HOW IS IT POSSIBLE ALL MY BTC DISSAPPEARED RIGHT AFTER I RECEIVED IT?
⭐ Merited by nc50lc (1)
"Windows is extremely easy to break into"
This is common misconception, unfortunately. You may be thinking of Windows XP or another ancient version?
These days running an updated version of Windows (as millions of users are) is safe.
Of course you also need to use sound security practices, which is just as true with Linux.
This is common misconception, unfortunately. You may be thinking of Windows XP or another ancient version?
These days running an updated version of Windows (as millions of users are) is safe.
Of course you also need to use sound security practices, which is just as true with Linux.
Re: [ANN][XCP] Counterparty - Pioneering Peer-to-Peer Finance - Official Thread
So, who is still around, more than 10 years after launch?
Anyone from the old days who reponds to this post, I've got plenty of goodies (some high-issuance pepes, some rarer ones, some fun old assets) to give away!
To qualify: you must have previously posted in this thread prior to 2018 _and_ you must not have posted anything more recently.
Either post your address here, or by PM.
Anyone from the old days who reponds to this post, I've got plenty of goodies (some high-issuance pepes, some rarer ones, some fun old assets) to give away!
To qualify: you must have previously posted in this thread prior to 2018 _and_ you must not have posted anything more recently.
Either post your address here, or by PM.
Just noticed this today. I got 2 extremely similar private keys. Does anyone know if this could be a sign of a security issue with the PRNG?
Probably not
Yes! This should not happen. Unless you altered the source to search from a specific starting point.Probably not
I've never used VanitySearch (because I hardly trust any new software), and I don't know how it works internally, but I would expect it to generate a new random private key after finding a match. I think it's okay to add "+1" from a random number to search the next one (which I expect to be much faster than generating new private keys all the time), but two similar private keys shouldn't happen.
I'm just using the official build, unaltered. (OS: Windows 10 with the latest security updates)
Just found another 2 similar private keys:
0x90AD2D51198584C695F79D27512B147C865C7093E10065F4B4363881C882C87D
0x90AD2D51198584C695F79D27512B147C865C7093E10065F2B4363881C87CF970
PubAddress: bc1q22ace8n7qwe3xtazp05x6vl8fy7mkf5cwznnp5
Priv (WIF): p2wpkh:L24wedqSrZsKNmmF33fxZj75Xz4P4K562VzHKJCE4Q2p6TrBoJha
Priv (HEX): 0x90AD2D51198584C695F79D27512B147C865C7093E10065F2B4363881C87CF970
PubAddress: bc1q22acevaq6x6r4867ay2n73qfgjlcj95pzrxx9x
Priv (WIF): p2wpkh:L24wedqSrZsKNmmF33fxZj75Xz4P4K562WivkuVB3vnYXXDimUkL
Priv (HEX): 0x90AD2D51198584C695F79D27512B147C865C7093E10065F4B4363881C882C87D
At this point I'm guessing this is due to performance optimizations made by the developer?
⭐ Merited by LoyceV (4)
Just noticed this today. I got 2 extremely similar private keys. Does anyone know if this could be a sign of a security issue with the PRNG?
Code:
C:\Users\demo\desktop>VanitySearch.exe bc1q22ace
VanitySearch v1.19
Difficulty: 33554432
Search: bc1q22ace [Compressed]
Start Sun Mar 10 10:21:35 2024
Base Key: CF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC0241E8F8E83709C04B5
Number of CPU thread: 4
[7.13 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.02][Prob 98.3%][99% in 00:00:02][Found 0]
PubAddress: bc1q22acereqtjkhs0xx0a8u5gkdxn5xpvhltnwkcs
Priv (WIF): p2wpkh:[b]L4AA9GpBX7GoRJy3wEgAhzg3zkL8diGmam[/b]8wcdCFjArkQKzBRgMu
Priv (HEX): [b]0xCF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC02[/b]51E8F8E8370FA8472
7.13 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.42][Prob 99.5%][99% in 00:00:00][Found 3]
PubAddress: bc1q22aceas0aw22n3rqnm8ws9gpynd8yzlx0alevd
Priv (WIF): p2wpkh:[b]L4AA9GpBX7GoRJy3wEgAhzg3zkL8diGmam[/b]sb4EVCikuAiR3jqbG1
Priv (HEX): [b]0xCF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC02[/b]71E8F8E837113FB6D
[7.12 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.64][Prob 99.8%][99% in 00:00:00][Found 4]
VanitySearch v1.19
Difficulty: 33554432
Search: bc1q22ace [Compressed]
Start Sun Mar 10 10:21:35 2024
Base Key: CF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC0241E8F8E83709C04B5
Number of CPU thread: 4
[7.13 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.02][Prob 98.3%][99% in 00:00:02][Found 0]
PubAddress: bc1q22acereqtjkhs0xx0a8u5gkdxn5xpvhltnwkcs
Priv (WIF): p2wpkh:[b]L4AA9GpBX7GoRJy3wEgAhzg3zkL8diGmam[/b]8wcdCFjArkQKzBRgMu
Priv (HEX): [b]0xCF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC02[/b]51E8F8E8370FA8472
7.13 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.42][Prob 99.5%][99% in 00:00:00][Found 3]
PubAddress: bc1q22aceas0aw22n3rqnm8ws9gpynd8yzlx0alevd
Priv (WIF): p2wpkh:[b]L4AA9GpBX7GoRJy3wEgAhzg3zkL8diGmam[/b]sb4EVCikuAiR3jqbG1
Priv (HEX): [b]0xCF08C5ECA140F4CF8A32B0673E3B88A2B5647661F4EFC02[/b]71E8F8E837113FB6D
[7.12 Mkey/s][GPU 0.00 Mkey/s][Total 2^27.64][Prob 99.8%][99% in 00:00:00][Found 4]
Re: [ANN][XCP] Counterparty - Pioneering Peer-to-Peer Finance - Official Thread
i have 1524 of this dont get it out af the wallet LOL seed words dont work 
Can you clarify, 1524 of what? According to xchain there is no address with 1524 XCP...
Re: Don't buy "wallet.dat" files with lost passwords; EXCHANGE THEM.
I'm pleased to accept 50/50% or offer even over 50%...
Would you like some Print Screen of them?
Yes please!
Re: Don't buy "wallet.dat" files with lost passwords. EXCHANGE THEM!
Whoever finds the password of this hash gets 10 Bitcoins.
$bitcoin$64$c9719d2471d5e444be11eb9602d8bda002e8608f1f69d62c2a5a7531c9714323$16$dd76df212917e53e$26768$2$00$2$00
Once password is found, pm me
$bitcoin$64$c9719d2471d5e444be11eb9602d8bda002e8608f1f69d62c2a5a7531c9714323$16$dd76df212917e53e$26768$2$00$2$00
Once password is found, pm me
Which wallet and addresses is it?
Re: Don't buy "wallet.dat" files with lost passwords. EXCHANGE THEM!
Hey @F4LC0N90
I cant get telegram working :-/
But in any case i have gotten the password for:
$bitcoin$64$a52322f90ea4a89c0158e302dad35833e67758090e94cd6c338c8af8103ac34d$16$a330d7d65767e173$200445$2$00$2$00
PM me pleeeease!
Dont want to miss out AGAIN!
I cant get telegram working :-/
But in any case i have gotten the password for:
$bitcoin$64$a52322f90ea4a89c0158e302dad35833e67758090e94cd6c338c8af8103ac34d$16$a330d7d65767e173$200445$2$00$2$00
PM me pleeeease!
Dont want to miss out AGAIN!
Did you get in touch with someone who has the dat file?
Here is another fun way of doing it which is a lot faster and cheaper to do:
If you run a SPV client like Electrum on your computer you already have all the block headers saved up in a ~60 MB file called "blockchain_headers" which is a stream of bytes. All you have to do is to programatically read this file to get the raw bytes which should be a multiple of 80. Each 80 byte is a block header of a block in chronological order (so you have the block height this way too). Then start from the beginning (byte 0) and extract the time from each 80 byte chunk (ie. one header) knowing that 4th item in it is the timestamp.
Here is a pseudocode
Keep in mind that timestamps are in UTC not your local time.
If you run a SPV client like Electrum on your computer you already have all the block headers saved up in a ~60 MB file called "blockchain_headers" which is a stream of bytes. All you have to do is to programatically read this file to get the raw bytes which should be a multiple of 80. Each 80 byte is a block header of a block in chronological order (so you have the block height this way too). Then start from the beginning (byte 0) and extract the time from each 80 byte chunk (ie. one header) knowing that 4th item in it is the timestamp.
Code:
version[4] + prev_hash[32] + merkle_root[32] + time[4] + target[4] + nonce[4]
Here is a pseudocode
Code:
stream = File.Read("blockchain_headers")
while(stream.HasBytesLeft)
stream.Skip(68)
timestamp = stream.Read(4).ConvertToTime_LittleEndian()
resultList.Add(timestamp)
stream.Skip(8)
Now all you have to do is search in the list of timestamps to see when the day in the datetime you converted changes to get the last height of the day. The height is the index of the datetime inside the resultList/array.while(stream.HasBytesLeft)
stream.Skip(68)
timestamp = stream.Read(4).ConvertToTime_LittleEndian()
resultList.Add(timestamp)
stream.Skip(8)
Keep in mind that timestamps are in UTC not your local time.
Thanks, this does sound like a fun and effective way, I'll give it a shot!
I'm trying to programmatically get the block height at certain given dates - for instance, first day of each month.
Is there an API call (or just a small dump or such data somewhere) which could help?
Thanks!
Is there an API call (or just a small dump or such data somewhere) which could help?
Thanks!
What is the lowest (non-zero) transaction fee you have ever used or seen?
⭐ Merited by o_e_l_e_o (4)
I've just seen the below tx go through with a 191 sat fee. I don't remember seeing such a low fee in a confirmed transaction lately.
https://mempool.space/tx/507402f95a07511bb8ba3d5fecfa65bb1d9e44367aef42d38cfa8238c243f54b
Anyone aware of lower fee examples (in 2022)?
EDIT: I assume fees can be even lower with segwit, right?
https://mempool.space/tx/507402f95a07511bb8ba3d5fecfa65bb1d9e44367aef42d38cfa8238c243f54b
Anyone aware of lower fee examples (in 2022)?
EDIT: I assume fees can be even lower with segwit, right?
So 32 characters looks like the current limit to have been created from a private key.
Actually the current shortest known address that was created from a private key is 31 characters (discovered in 2014):
111111i4VTdHkzFqV2a4jntfZkdVk6B - See this thread: https://bitcointalk.org/index.php?topic=90982.0
Re: 1SPLiTKEY.com The easy, secure and mostly free vanity wallet service
I came across this address on the blockchain...
https://www.blockchain.com/btc/address/11111112bNPrmptGiA7obGq5KHrNaKdX
Out of curiosity, what would be the cost estimate for generating such a prefix (11111112) ? Seems expensive.
https://www.blockchain.com/btc/address/11111112bNPrmptGiA7obGq5KHrNaKdX
Out of curiosity, what would be the cost estimate for generating such a prefix (11111112) ? Seems expensive.
⭐ Merited by vapourminer (1)
I was surprised to see this one getting through today - I thought zero-fee transactions on mainnet were no longer possible?
https://www.blockchain.com/btc/tx/fd4d01843d4a7b36696dafdf2fbaafb1aa159ff8c21755189a5b3fb14411aee1
https://www.blockchain.com/btc/tx/fd4d01843d4a7b36696dafdf2fbaafb1aa159ff8c21755189a5b3fb14411aee1