There are approximately 2 256 public private key pairs. There are approximately 2 160 Bitcoin addresses. Due to the birthday problem effect we can only use 2 80 Bitcoin addresses. To be safe this should be reduced to at least 2 70 addresses. There are on the order of 2 33 people on the planet. This means each person on the planet gets 2 70 - 33 = 2 37 addresses. Put another way, the large bitcoin collider system here https://lbc.cryptoguru.orgis capable of generating over 2 55 keys per year so they will generate 2 70 Bitcoin addresses in about 2 70 - 55 = 2 15 = 33 thousand yearsNow you do not need to guess at the number just to post your fucking paid signature. I don't think you described the birthday collision accurately. There are still 2^160 Bitcoin addresses. All of them are usable. The Birthday collision only means that if you keep generating addresses, you will generate the same address about once every 2^80 times. A bitcoin address is basically a RIPEMD-160 hash of the public key. So, if you generated 2^80 public keys and hashed each one, you would have about a 50/50 chance that you'd end up with the same Bitcoin address as the output of two different hashes. This is why there are 2^256 private keys and only 2^160 addresses. The important thing is that any given Bitcoin address still has 160 bits of security since you cannot use the birthday attack to crack a private key. I read a lot of this article: https://en.wikipedia.org/wiki/Birthday_problemSpecifically this statement: The birthday problem in this more generic sense applies to hash functions: the expected number of N-bit hashes that can be generated before getting a collision is not 2N, but rather only 2N/2. This is exploited by birthday attacks on cryptographic hash functions and is the reason why a small number of collisions in a hash table are, for all practical purposes, inevitable. And the table in the article titled "Probability table" which shows that at 2 N/2 the probability of a collision is about 75%, which is totally unacceptable. Therefore, I concluded that about 2 70 addresses is all we should use before we start getting too many collisions. 2 70 is just an estimate. If we can agree on what is an acceptable probability of a collision 10 -15? 10 -18? etc. then we could calculate a more exact acceptable number of Bitcoin addresses to be used (before we switch algorithms). |
|
|
|
There are approximately 2 256 public private key pairs. There are approximately 2 160 Bitcoin addresses. Due to the birthday problem effect we can only use 2 80 Bitcoin addresses. To be safe this should be reduced to at least 2 70 addresses. There are on the order of 2 33 people on the planet. This means each person on the planet gets 2 70 - 33 = 2 37 addresses. Put another way, the large bitcoin collider system here https://lbc.cryptoguru.orgis capable of generating over 2 55 keys per year so they will generate 2 70 Bitcoin addresses in about 2 70 - 55 = 2 15 = 33 thousand yearsNow you do not need to guess at the number just to post your fucking paid signature. |
|
|
|
If I counted right the bitcoin address has 32 marks and consist from numbers and letter. The phone numbers are much shorter and they are enough for everybody, and not used numbers with the time are coming to new users. So, I think with such wide combination of numbers and letters bitcoin wallets will be enough to every human on the Earth get his own.
BAN ALL PAID SIGNATURESFucking shit posting dipshits. Read the thread, contribute to the thread or don't post at all. We have to fix this. |
|
|
|
they have nothing cryptographic.
Totally unfair. Their SQL database is password protected. The password is probably "password$123". |
|
|
|
|
A long time ago I gave my parents 10 BTC when it was about $50. They also lost the password. We may try hypnotism to try and get it back.
|
|
|
|
|
Did you lose the private key to 1DGLZ2cDMrUPor4CmWxjsVzzYSyimUUYbC?
If so you should probably take it out of your signature.
|
|
|
|
Does anyone use this website for cash transactions? I wonder about the chances of encountering an undercover agent who tries to get you for something with the site.
After I was arrested by homeland security the justice department was very interested in taking over my localbitcoins account. As part of the plea deals they offered me they wanted the account so they could use it for undercover operations. I am certain that many who are arrested will turn over their accounts as part of their plea deals. I did not accept any plea deal so I never turned my account over to them, however I have not used it since the arrest since using the darn thing is what got me into trouble in the first place. If I had never advertised on localbitcoins they would have never been able to claim what I was doing was a business and they would not have been able to arrest me for running a business without the proper license. At least some localbitcoins account are run by federal agents, cooperating witnesses or undercover agents in local jurisdictions. That is a fact. Much of the evidence presented against me was from undercover operations where they video and audio taped me in a coffee shop doing a trade of BTC for cash or cash for BTC - all arranged through their accounts or cooperating witnesses on localbitcoins. It is not illegal to use localbitcoins as a customer to buy or sell BTC. Always assume you are dealing with an cop so be very careful what you say. If they ask you what you are going to use the BTC for they may be trying to get you to admit you are going to use them for something illegal. Advertising on localbitcoins is a whole other matter. The US federal law enforcement can use the fact that you are advertising to claim you need a license. That is what happened to me. The whole thing cost me over $250,000 to clear my name and avoid going to prison. |
|
|
|
Hi Burt, how does your calculation differ from the one I provided? In other words, what am I missing in the math?
What you are missing is that the encoded Bitcoin address you are looking at is not the hash of the Bitcoin public key. It is an encoded version of the hash of the Bitcoin public key. I took the number of digits in the public address to the power of the number of combinations. I'm obviously not incorporating the private key.
The encoded Bitcoin address you are looking at has nothing at all to do with the private key. The hash of the public key is a 160 bit number. To that 160 bit number a checksum is added and then it is encoded. That is the Bitcoin address you are looking at. Basically it contains the checksum bits so it has more bits that the 160 bit public key hash. The checksum is added so that if you type it incorrectly it can be recognized as an invalid Bitcoin address. Also, what system verifies that a new address is created (rather than a duplicate)? Are all addresses generated from blockchain.info?
Bitcoin private keys are approximately 256 bits long. They are generated randomly. It is just the immense address space that is used to avoid collisions. There is no checking to see if there is a collision. Then the public key, which is actually a point on an elliptical curve is calculated from the private key. The public key is a point on a curve with an x and a y coordinate. Then the public key is hashed three times and this produces the 160 bit hash of the public key. Then the checksum is added and the whole thing is encoded and then you have a Bitcoin public address. Note that there are approximately 2 96 public/private key pairs that map to each of the 2 160 Bitcoin addresses. Good talk here, friends, thanks!
Good to talk to you. It is refreshing to find someone who actually reads a thread instead of just stopping by, reading just the OP (or even just the title), and then leaving a steaming pile of their opinion in the thread just to bump their post count. |
|
|
|
There are so many number combination in the address, there capital and small letter plus number, so it will be enough for all of us, and if the address is run out we can simply just add the length of the address, but it will be very long before the address run out of number
Looking at the encoding of the Bitcoin address may be fun and interesting but, like I said, the actual number of possible Bitcoins addresses is 2 160. We will never run out. Do not worry about this. 2 160 is about 10 48For comparison the number of water molecules on Earth is about 5 x 10 46So there are about 20 times more Bitcoin addresses than molecules of water on Earth. |
|
|
|
Considering that bitcoin addresses get wasted and discarded like plastic bottles of water, is there ever a risk that we'd use up all the bitcoin addresses?
I realize the possible combinations is 36 to the power of 32, but I don't have a way to make sense of the resulting number. How many address are used in a day? How quickly are we going through these possible combinations?
The actual number of possible Bitcoin addresses is 2 160This number is so large our tiny human brains cannot comprehend it. There is no need to worry about running out. We never will. |
|
|
|
|
The transactions will either go through or they will eventually be dropped.
If dropped you will be able to get the BTC back into your wallet.
|
|
|
|
You paid a "reasonable" 121 S/b. Unfortunately the fee to get a quick transaction is currently 220 S/b https://bitcoinfees.21.co/You can try a transaction accelerator however since the current backlog is over 60,000 transactions you may just have to wait. |
|
|
|
People who come into your house are not looking for your bitcoin wallet I promise you.
Unless they are homeland security agents looking for money to run their operations.Shaun Bridges and Co ?  No, the homeland security agents in my case were "honest" agents and did not try to personally pocket any of the loot they took from me. They turned it all over to the government to help fund future operations in their department. |
|
|
|
Well, indeed. But what if this user just cites the original creator of the transaction... *point lost*
Why the heck do you care? He is not asking for money. He is giving it away. Your "prove it" post is just annoying. He will either move the coins as he said he is going to do or not. What the hell does it matter if he proves himself to you or not? Do you think he is running a scam with his single post claiming to be the creator of a puzzle that gives away Bitcoins? |
|
|
|
Does it yet exist any person who has been contact by their tax authority with the message "You have not payed you Bitcoin capital gain tax"?
I do not know about any such person.
After my arrest by homeland security the prosecutor in the case threatened to turn everything over to the IRS if I did not cooperate. I paid all the taxes and did not have fear of the IRS so I did not have to cooperate and was in a much stronger position. However my criminal attorney advised me to get a tax attorney on retainer just in case she carried out her threat. So, I ended up having to hire three separate law firms: 1) a law firm in California to handle the criminal charges against me, 2) a law firm in Colorado to handle the civil charges against all the seized property and 3) a law firm from New York to handle any tax issues if necessary. Luckily, since the taxes were all paid, I did not have to use my New York law firm. |
|
|
|
My ears were burning. Did someone mention my name? I have paid capital gains tax on every Satoshi of profit I ever made from 2011 till now. I did not get any thank you note from the IRS. However I have read somewhere that the IRS believes that a vast majority of Bitcoin traders do not pay the taxes on their capital gains. I am not saying whether that is true or not. What I read is that the IRS believes that. Therefore, you can expect them to try their best to find those that are not paying the tax and get them to pay it. That is their job after all. Hopefully everyone will realize in time that if you are not using government properties and resources to earn money and do business you are not suppose to pay any taxes especially if you are mining.
Wrong. Even if you barter it is taxable. Mining is taxed as ordinary income. Someone gifting you money then should you pay tax on it?
Yes, if the gift is over a certain amount. Who says so?
The IRS. Those people writing the laws are influenced by the banks and government agencies, you shouldn't follow any law as if it's the right one.
Brave words. Ever been thrown in jail? Willing to go to jail for that belief? I don't know about big companies but individuals if know how to deal with bitcoin will never have to be worried about taxation.
Bullshit. |
|
|
|
This puzzle is very strange. If it's for measuring the world's brute forcing capacity, 161-256 are just a waste (RIPEMD160 entropy is filled by 160, and by all of P2PKH Bitcoin). The puzzle creator could improve the puzzle's utility without bringing in any extra funds from outside - just spend 161-256 across to the unsolved portion 51-160, and roughly treble the puzzle's content density. If on the other hand there's a pattern to find... well... that's awfully open-ended... can we have a hint or two?  I am the creator. You are quite right, 161-256 are silly. I honestly just did not think of this. What is especially embarrassing, is this did not occur to me once, in two years. By way of excuse, I was not really thinking much about the puzzle at all. I will make up for two years of stupidity. I will spend from 161-256 to the unsolved parts, as you suggest. In addition, I intend to add further funds. My aim is to boost the density by a factor of 10, from 0.001*length(key) to 0.01*length(key). Probably in the next few weeks. At any rate, when I next have an extended period of quiet and calm, to construct the new transaction carefully. A few words about the puzzle. There is no pattern. It is just consecutive keys from a deterministic wallet (masked with leading 000...0001 to set difficulty). It is simply a crude measuring instrument, of the cracking strength of the community. Finally, I wish to express appreciation of the efforts of all developers of new cracking tools and technology. The "large bitcoin collider" is especially innovative and interesting! That's very nice to hear, but please prove yourself by signing a message with the last address (256) from the transaction, which hasn't been cracked yet. I think moving all the 161-256 coins should be enough proof for you. |
|
|
|
I think this deserves a spot in this thread. If not then it will get deleted: This puzzle is very strange. If it's for measuring the world's brute forcing capacity, 161-256 are just a waste (RIPEMD160 entropy is filled by 160, and by all of P2PKH Bitcoin). The puzzle creator could improve the puzzle's utility without bringing in any extra funds from outside - just spend 161-256 across to the unsolved portion 51-160, and roughly treble the puzzle's content density. If on the other hand there's a pattern to find... well... that's awfully open-ended... can we have a hint or two? I am the creator. You are quite right, 161-256 are silly. I honestly just did not think of this. What is especially embarrassing, is this did not occur to me once, in two years. By way of excuse, I was not really thinking much about the puzzle at all. I will make up for two years of stupidity. I will spend from 161-256 to the unsolved parts, as you suggest. In addition, I intend to add further funds. My aim is to boost the density by a factor of 10, from 0.001*length(key) to 0.01*length(key). Probably in the next few weeks. At any rate, when I next have an extended period of quiet and calm, to construct the new transaction carefully. A few words about the puzzle. There is no pattern. It is just consecutive keys from a deterministic wallet (masked with leading 000...0001 to set difficulty). It is simply a crude measuring instrument, of the cracking strength of the community. Finally, I wish to express appreciation of the efforts of all developers of new cracking tools and technology. The "large bitcoin collider" is especially innovative and interesting! |
|
|
|
|
Show Posts
