Here is a quote of my post, where I gave a testnet private key with balance of 1BTC. The coin is still there for anyone to take  |
|
|
|
Bitcoin can answer to a crack, that was done before with a rollerback, but some attack would be bad for the business could be a complete CAOS for a while.
With the amount of transactions bitcoin currently has >300k/day, a rollback is almost impossible. Planning a rollback and getting everyone to agree with it would take some time, and what would you do with the >300-2000k transactions that were confirmed before the rollback? There is a lot of money moving in bitcoin. How can anyone justify cancelling than many transactions? Imagine. You sell your car for bitcoins, wait for it to confirm hand over your car and then the next day you don't have your coins anymore  What would that do to the reputation of bitcoin? Maybe, if there would be a HUGE theft that would be noticed immediately, but that would have to be REALLY huge. I cant imagine such a thing happening anymore. When a rollback was done bitcoin was a lot of smaller and there weren't as many transactions then. And the bug would have destroyed bitcoin if it had not been fixed. (someone created ridiculous amounts of new bitcoins from nothing. IF I remember correctly he created hundreds of millions of bitcoins...  so something had to be done) |
|
|
|
|
Sooner or later we have to divide the blockchain to 2 parts (as has been previously suggested).
Old data and new data.
This would work, if the "old" data is also made available for downloading, so that if anyone doesn't trust that the beginning of the "new" data is correct, he/she can verify it himself.
A file with all the addresses and their balances takes less than 900M. So maybe the new blockchain size would be around 3GB ?, with all the separate UTXO:s included in it.
Would be great if the blockchain could be "pruned" every 5 years or so, and all the "discarded" data would be made available for downloading too, from outside of blockchain.
|
|
|
|
|
They have already printed enough money to buy all big companies of the whole world.
That would be an interesting "investment".
It is a wonder that the value of dollar has not crashed yet.
|
|
|
|
|
Currently I pay 35€ for 300 Mbps Fibre.
I used to pay 1€/Gb with 4G internet. Fibre is much better and comes a little cheaper with my use.
Fibre installation didn't cost anything, but was very hard to get (probably because it doesn't cost anything here)
|
|
|
|
I mostly use a Laptop for everything. Smartphones are too small for me. It's hard to see the small text in many sites. The better the resolution the smaller the text in some sites, where you can't even adjust the text size  |
|
|
|
Couldn't think of any other way to re-introduce myself since I kind of thought id have like elite status posting privileges after all these years  Welcome back About those privileges, Can you put an avatar and signature to your profile? Newbies can't, but some "old" newbies can. I think at-least if you had an avatar when the "new" restrictions came, then you would still have it. |
|
|
|
There seems to be a revival in the interest in bacteriophage following the increasing ineffectiveness of antibiotics. This should improve world health, and reduce the profits of the Big Pharma companies. Hopefully we will start to see an increase in their use fairly soon. They were discovered in 1919, but were sidelined for apparent political reasons. There are quite a few videos around, but this one gives a brief intro to their history.
I think new antibiotics will replace old antibiotics Not phages. Phages are good, but each phage work against just one type of bacteria. So you would need lots of different kinds of them... I read an article about new antibiotics, which if they get approved would solve our problems. Some of them were predicted that bacteria's couldn't ever build resistance against. (Yep. Ever is a long time) If I recall correctly the problem with those were that they were even TOO effective. Sorry, I don't have a link to the article, but searching with words: "new soil antibiotics resistance" should give some interesting results. Phages Only Kill Certain Type Of Bacteria, You Need A Certain Type Of Phages To Cure A Disease.
Which is the big problem with phages. 1 broad spectrum antibiotic worked on both of mine (and most of the other ones too). Doing it with phages requires a culture to determine which one(s) you need. -Dave It is a problem, but also a good thing. With phages you have no side effects, because they only attack the infection causing bacteria and nothing else. |
|
|
|
Anyone here likes to play Puzzles... and they are actually good and that? I have some unsolved, and my brain is not capable to crack them  Do you mean Bitcoin puzzle problems? (no) If you count sudokus as puzzles too, then yes. I think I am pretty good, but I still like to play at levels easy/medium and make them more difficult by adding extra challenges. Examples: -by fully filling one 3x3 grid at a time -solving only full lines/columns at a time. I am also planning to try to do a very easy soduku completely in my head before filling it to a paper, but haven't done it yet (completely in my head. Without seeing the paper) |
|
|
|
You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible.
Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them.
That's quite interesting, I didn't know that. I couldn't find anything useful on Google, got any more info on that? How are the public keys to Satoshi's old stash known, where public keys public before the protocol was changed to the way it works now? At the beginning bitcoin used pay to public key (P2PK) instead of the pay to public key hash (P2PKH) that we are using now. When using P2PK the public key is published in the blockchain when the "address" receives coins. Actually. without QC, the P2PK is even safer than P2PKH, because there is only ONE valid private key that can be used to spend coins from P2PK, while there are 2^96=79228162514264337593543950336 valid private keys to all P2PKH addresses. Because of the Ripemod160 hash. I do not know any wallet that would still support paying to P2PK "addresses", but there are some scripts in the net that can still be used for creating P2PK "addresses" |
|
|
|
Deriving the private key of old addresses that got reused and still have balance: eventually. Deriving the private key of old address with no outgoing transactions: no. The majority of "lost" coins fall in the latter category. Quantum computing can't bring back old coins just like it can't bring back your grandmother. You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible. Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them. |
|
|
|
I think a lot of time people don't want to invest in gold mainly because it's just a pain. It's expensive, often times hard to find a seller, associated risks involved, at that point it's just easier to keep USD (backed by government). If you are afraid of the dollar becoming worthless, in the event that it does, your gold isn't going to mean shit compared to canned food.
Wouldn't say that. If dollar becomes worthless, Gold (or bitcoin) would be a better option. Dollar is a fiat currency backed by trillions of dollars worth of debt, It can collapse and it wouldn't necessarily mean that all other currencies would also collapse and canned food would be the new currency. Do you suggest that everyone should be investing in canned food. Ok. What to do after you already bought canned food with 20000$ where do yo invest the rest of your money? Somewhere where the value is saved... |
|
|
|
I tried downloading a bitcoin wallet and many options pop up. But to my knowledge about cryptocurrency there are a lot of scam wallet around so in other to avoid falling a victim I am seeking an advice on a legit bitcoin wallet to download.
I also recommend Electrum. It is probably the best. Just be careful where you download it. There are many scamsites where you can download an unsafe version of Electrum. Actually I would go as far as in addition to being very careful where to download it, also to move to the wallet just a small amount of coins at first. And trust the wallet only if the coins are still there after 2 days. (Paranoid. I know.) Most scam versions of wallets move coins out almost instantly when coins are moved to them About buying a hardware wallet: If you plan to move your coins a lot, then hardware wallet is a good idea. On the other hand if you just want to store the coins long term, then HD-wallet doesn't give you ANY additional security. Actually the opposite, because your HD wallet could break and you could lose your coins. And if you save your HD wallets seed phrase, how does that differ from paper wallet? And of course you could get a HD wallet that has been tampered with. Some people love their HD wallets. And they are indeed one of the safest option if you DO move your coins often. |
|
|
|
Here is a link to a python code that creates bitcoin addresses It was an old code that I found from somewhere in the internet couple of years ago and then edited it so that it now supports the compressed address format. I think I also changed the RNG to a better one. But you can see how bitcoins base58Check encoding, and hashing can be implemented quite easily in python. https://pastebin.com/6yw2BtDMPS. it is made with python 2.7 (I think i had 2.7.13 when I edited that... long time ago) |
|
|
|
I mean, 21 million isn't much. That there are just 21 million units is a common misconception, which we should get rid of. We can start saying that there are 21000 million mBTC (or mBTC), which is true. Actually m BTC would be a much more useful unit. As mBTC is currently only about 11$. It would be much easier for new investors to start investing by buying a "WHOLE" mBTC and not worrying if they do not have 11000$ to invest in one full BTCBut yeah. the developers could fork bitcoin and create a new one that has more coins. they probably couldn't change that from bitcoin without everyone agreeing with them. |
|
|
|
Here is an address with 1BTC in it. and its private key. Have fun https://live.blockcypher.com/btc-testnet/address/mw11u88uKQcNcCscqk6HK6aBMCM88ZYGQw/Bitcoin Address: mw11u88uKQcNcCscqk6HK6aBMCM88ZYGQw Private Key: cT2z7HL8j3HoSBEHuoCBggn6R12AXBqSiQhKVeA8bh5yQvyiQf7k It can be moved by eg. installing some testnet wallet in your (android) phone. PS. Would have send the private key to you by PM, but the last time I put a testnet private key here it took ages before anyone took it  |
|
|
|
When there is a spend transaction the search method is:
Next Private Key -> Public Key -> Compare Public Key, repeat until found
Note that the private key range in this case is the full 2256 but there are ways to speed up the process
So, I think full entropy 256 bit private keys are still safe even with multiple spend transactions, but they may be less safe than a 160 bit Bitcoin address from a full entropy 256 bit private key with no spend transactions.
When the public key is known, there is a BIG speed up. With the fastest known algorithm the bit strength is cut to HALF so it is only 128bit security. Which is indeed a lot less than the 160 bit of hashed addresses. But even 128 bits is secure. There is no way to brute force 128 bits, That is unless someone comes up with a new additional way to speed up the calculations |
|
|
|
Saw it to... back to normal now lol
Yep. I was a little shocked for a second there. It is still visible if you look bitcoin value from the last hour (or 6 hours) Was too slow. didn't get to buy any coins with that price |
|
|
|
What happened: I am usually following bitcoin price from here: https://www.coindesk.com/price/bitcoinAnd now it shows the price to be 24€ Did Satoshi sell his coins or did someone break bitcoin crypto? I guess I want to buy more with that price |
|
|
|
|
Show Posts
