Invoice address - Bitcoin Wiki

NiceHash - buy & sell hashing power

NiceHash offers you to buy or sell hashing power directly, no contracts, no limitations, pay-as-you-go if you're a buyer and be-paid-as-you-go if you're a seller. Why bother renting rigs, when you can rent hashing power? NiceHash brings more to renters and rig owners. Visit today! Simply create order and you are already mining your favorite coin or point your rig to our stratum server and you are already earning bitcoins.

CoinSolver -- Profit Switching Scrypt Pool w/Nightly Bonus

CoinSovler is a new auto-switching scrypt coin mining pool that pays out directly in BitCoin. We're still in Beta, so suggestions and feedback are most welcome, and we have many features in the works. We intend for it to be dead simple to use, highly profitable and very transparent about the mining information.

Pizza is love, Pizza is life


If I randomly typed 34 alphanumberic characters what are the odds that it would be a valid bitcoin address??

Assuming I started with a valid number (e.g. 1) and did not use excluded characters: If I randomly typed 34 alphanumeric characters, what are the odds that it would be a valid bitcoin address??
submitted by worldquestionasker to BitcoinBeginners [link] [comments]

"Not a valid bitcoin address" with Wasabi Wallet?

Brand new, interested in Bitcoin... running into a problem.
I downloaded Wasabi Wallet and generated a new wallet. I then generated a receiving address to use with (I have bitcoins on a paper wallet I'm trying to transfer over).
On putting the receiving address into it returns an error saying "Not a valid bitcoin address"
What am I missing?
submitted by aarghbitcoin to BitcoinBeginners [link] [comments]

"Not a valid bitcoin address" with Wasabi Wallet? /r/BitcoinBeginners

submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

Newbie help- not a valid bitcoin address

Hi- looking for some pointers if possible please!
Bought some bitcoin about 3 years back, and I moved them to a multibit classic wallet.
Left them... 3 years later and I'm trying to move the coins back from that old laptop onto an exchange.
In the exchange (kraken), I have generated a deposit address. In multibit classic- I am then trying to send to that address (copying address details into notepad and moving from machines using a USB stick).
I keep getting an error though- "the address is not a valid bitcoin address".
I have double checked the address on block - and it looks fine, so I don't think it's a copy paste issue. Trying to send 0.08 so not a huge amount, but ample enough to cover transaction cost.
Any suggestions of what I could check??
Thanks in advance
submitted by philstant10 to Bitcoin [link] [comments]

Newbie help- not a valid bitcoin address /r/Bitcoin

Newbie help- not a valid bitcoin address /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Not a valid Bitcoin address

Tried to send a deposit but the address i was given comes back as being a invalid address for bitcoins
submitted by 4llsopp to BTCJackpot [link] [comments]

Code to validate bitcoin address (including multisig) in PHP?

Anyone know any code to validate bitcoin address (including multisig) in PHP? There is validator codes out there but they are old and dont support new multisig addresses
submitted by Drink_Feck_Arse to Bitcoin [link] [comments]

Validating Bitcoin Addresses In Python

submitted by bcolbe to Python [link] [comments]

HIRING: Google Apps function that validates Bitcoin addresses

Write a function that I can use directly in a Google Apps script. It should accept a Bitcoin address as a parameter, and it should return true or false depending on whether the address is valid.
Bid how much you want to be paid.
submitted by fimp to Jobs4Bitcoins [link] [comments]

What is the probability of mistyping a bitcoin address and sending coins to another valid address by chance?

Something sort of cool happened today. Out of nowhere, roughly .2btc arrived in one of my HD wallets. The address that it came to is one that I hadn't yet generated for my own use prior to receiving the money so I know I didn't use or otherwise broadcast the address in the past for anyone to have possibly known about it.
It's not a ton of money, but it's definitely not just dust either so I don't suspect that I'm being fished.. but I don't intend to move the money without mixing it anyways just in case. And if it is a fishing attempt, it still means they would have just guessed at a valid address...?
I have been told that the odds of someone guessing or accidentally typing a valid bitcoin address was pretty slim but I really can't imagine how else these funds would have come to an address that even I had never seen before.
So all that just to ask if anybody knows if the odds are super low like 1 in a million or is it relatively low like 1 in 100 ... assuming it was just a char or two that was off from another valid address?
Oh, and is there a way I can find out how far down the chain of HD addresses this address is?
..and thank you whoever you were!
submitted by spottedmarley to Bitcoin [link] [comments]

2 days of Ledger, 2 problems

Day 1, Bitcoin app wouldn't install. Fixed that. Sent some coins to my new wallet.
Day 2, now my Ledger won't generate valid Bitcoin addresses for me to send coins to.
What can I do? Quite silly malfunctions.
submitted by localbugs to ledgerwallet [link] [comments]


What’s the best ways to Identify phished markets ? Is there anyway to check valid bitcoin address?
submitted by Muggamason to darknet [link] [comments]

How to validate a change address with specter-desktop + multisig? (x-post from /r/Bitcoin)

submitted by ASICmachine to CryptoCurrencyClassic [link] [comments]

Trying to send to Native Segwit from Legacy address

Ledger Live is saying "This is not a valid Bitcoin address" when I try to send to a Native Segwit (bech32) address from a Legacy address. Can this not be done??
submitted by althea16 to ledgerwallet [link] [comments]

Can't withdraw btc "enter valid address "

Recent problems with the app? I've been using Gemini for at least a couple years , but only recently it tell me "please enter a valid bitcoin address" when I copy paste my wallet address. What's going on?
submitted by foxishonest to Gemini [link] [comments]

BitPay continually updates their system to PREVENT it from generating valid payment addresses for you, great customer service guys!

Literally is it too hard for them to just tell me the ADDRESS that I need to send payment to? How on Earth did Bitpay fuck up their payments system so badly that you can no longer get any valid bitcoin address to send them money any more? Literally people found two hacks to get the address, and they updated twice to remove those hacks and PREVENT you from getting ANY valid payment address. What in the hell.
submitted by d3plor4ble to CryptoCurrency [link] [comments]

A story about buying Pizza with Bitcoin

Yesterday I bought my first Pizza with Bitcoin. Sadly, this was a pretty unpleasant experience. But one I want to share with you guys. Maybe it can help someone with the same problems, maybe we can improve something. So let me start my story.

I checked a few delivery services in my area and found one that offers Bitcoins as a payment method. Since I never really used Bitcoin for payments I thought, let's try this and maybe I can even convince my wife that Bitcoin is pretty useable now.

So I chose my Pizza and some food for the wife and went on to pay for it. I had some Bitcoin (about 20 USD) on my phone wallet (Eclair) and thought that should be an easy deal. Yeah, how wrong I was...

I got to the payment process and they forwarded me to Bitpay. First thing I see is "choose your currency"

o) Bitcoin (network cost 0.50 USD)
o) Bitcoin Cash (network cost 0.00 USD)

It kinda felt like they wanted to push me towards BCH (maybe that's just me). But it's still nice to have some options to pay. Especially because the food delivery service only offered Bitcoin payments on his homepage.

At the same time, a countdown started to finish my payment before the order gets rejected (about 15 min).

So I chose Bitcoin and got a QR code I can scan to pay it. I scanned the code with my wallet and got the error "This is not a valid Bitcoin address". Well, shit. My countdown was already down to 12 minutes so I had to hurry and figure out what's wrong.

Next step I tried to copy the address and paste it into my wallet, but still not working. I was just getting some strange looking link (bitcoin:?r= Countdown was down to 10 minutes.

After that, I looked it up on google and saw that Bitpay seemingly tries to force feed their own wallet on you to make payments. Since I didn't want to download their wallet or even send my money there (especially because I only had a few minutes left), I looked further and found some help on Bitcointalk. Some users there found a way around this with using a decoder that changes the Bitpay link into an actual Bitcoin address. (

The site itself didn't look that trustworthy but since I only got about 3 minutes left I went on to gave it a try. I sent my Bitcoin to the decoded address. And look there, it worked. Bitpay told me they see my payment but we need to wait for confirmation. But wait, there is more.

Since I didn't look into the payment details I did send a little bit too much money (included too much transaction fees). So I ended up paying something like 3x the from Bitpay recommended fee. But I didn't mind that so much. What troubled me was the message Bitpay showed me, it was something like that:

"This payment was made with a low bitcoin miner fee, which may prevent it from being accepted by the bitcoin network. This is an issue with the configuration of your bitcoin wallet. If the transaction doesn't confirm, the funds will be again in your wallet in about 48-72 hours."

And I was like, what? How could the fee be to low if I used three times more than recommended? Should I now wait 72 hours before ordering a new Pizza? Becoming more and more hungry I still decided to wait out and see if my transactions will get confirmed. And my patience got rewarded, about half an hour later they confirmed my payment and the order got routed to the Pizza Restaurant. An hour later I finally got my Pizza and it was delicious. Well, maybe because I was already dying because I was so hungry but still. At least I had a happy end.

Needlessness to say, I couldn't convince my wife to use Bitcoin for further Pizza deliveries. Moreover, I can't even recommend it to anyone new to Bitcoin because that was quite a shitty experience. Mostly because of Bitpay I would argue.

Don't get me wrong, I really love Bitcoin and the opportunities it provides. But it seems, we still have a long way to go for mass adoption (or even an easy way to order Pizza).

Since I would love to improve that process I thought about sending that delivery service some feedback. To even give them an opportunity to improve, I think they would have to move away from Bitpay to another payment service. Anything you guys can recommend for Europe?
submitted by Altcoincon to Bitcoin [link] [comments]

Claim Your Hex With Ledger

First off, I’m not that technical of a guy. I just tinkered for several hours until I got this to work. I used this process for 3 bitcoin addresses I have on ledger and it worked each time. If this helps you then help me by using my link to claim your hex, you get an extra 10% bonus I also get a bonus we all win. Ok here goes my process. You will need your ledger of course, a text editor and the old ledger wallet bitcoin chrome extension. The new ledger live app does not have a function to sign transactions. If you don’t have this extension already installed it won’t work. I didn’t find it on the chrome store anymore even when using the ID number. I did however see some shady ledger extensions on the chrome store with misspelled words. Please don’t use any of those unless you like losing money. If you don’t have an old ledger wallet bitcoin chrome extension you may need to download the electrum wallet and follow similar steps. FYI at this point I do not recommend buying any hex with Eth but you should free claim if you can. You never know what the future holds.
Step 1: Open the ledger wallet bitcoin extension app and connect your ledger. (Sometimes I had to exit and re-enter the bitcoin app on my physical ledger a couple of times to get the app to connect). You will be asked to choose bitcoin or bitcoin cash. Choose bitcoin of course then choose segwit.
Step 2: Click on the bitcoin account you want to claim then click on see all operations. Depending on how active your account is you may have several operations listed.
Step 3: Click on an operation to pull up the operation detail. At this point make sure your text editor is open. You will now see the “From” and “To” sections. Highlight all of the “To” addresses copy and paste them into the text editor. You may only have one address or you may have
Multiple. DELETE all addresses that do not begin with a 3.
Step 4: If you had multiple “To” addresses under your operation detail, now comes the time consuming part. Click on settings, then tools, then sign message. Click on address under sign message. Now in the search field copy and paste an address from your text editor list into the search field. If it’s an invalid address it should say “No results match”. Delete that address from your list and repeat the process with another address until you find an address that returns a match. (One of my accounts had 87 address. It took 10-15 mins, not to bad, but still annoying. If anyone has a better process please share to help others out.)
Step 4: Shameless shill….. use my link which will take you to Then click on the link go.hex.winn. Click the claim tab. Enter the valid bitcoin address from your text editor list into the bitcoin address field then click claim this address.
Step 5: Click the copy icon to copy the message under the “please sign this message with your Bitcoin address” field. Go back to sign message in your ledger wallet bitcoin chrome extension. Make sure you have the valid address you found selected and then paste the message in the message box and click sign. Confirm sign message on your ledger device.
Step 6: Highlight and Copy everything between ----BEGIN SIGNATURE---- and ---END BITCOIN SIGNED MESSAGE---. Then paste this into the signature field on go.hex claim page and submit. Congratulations you’re done.
Tip: If for some reason you run into an error message in the ledger wallet bitcoin app. Make sure your nano ledger is unlocked. You many need to exit the app on ledger then re-open it or even close app extension and disconnect ledger and reopen everything. This happened to me and it worked.
Referral Link:
submitted by crypto-jones to HEXcrypto [link] [comments]

Blocking sextortion email

Has anyone had any luck in creating a rule to block sextortion emails? I have been working on a rule to use RegEx to look for valid bitcoin addresses as well as at least 3 matches of a list of common sextortion keywords. The problem is that these emails use many Cyrillic characters or misspellings which it makes it very difficult to reliable detect. If anyone has a list of keywords common to sextortion emails that they would be willing to share, I would appreciate it.
submitted by DirtBoogers to email [link] [comments]

BitGrail update 30.01.2018

Dear users, this is going to be a new update about what’s going on, since seems that for someone a statement every half an hour is more important than the possibility to focus on work. Despite possible offenses, criticism, threats, I’m gonna proceed. Even if these are some of the things that can make updates annoying to do.
I’ll begin repeating once again this concept: BitGrail cannot work without mandatory KYC anymore. Looks like exchanges in general can’t do it, even if some may ignore it. But BitGrail can’t. It is in a country where you can’t ignore the law and even if there would be the opportunity, we wouldn’t do it. BitGrail want to operate in cryptocurrency market in the more transparent way possible, talking about laws.
I won’t go into details, but here’s something about KYC:
In particular, read point 2: "Foreign-located MSBs are subject to the same civil and criminal penalties for violations of the BSA and its implementing regulations as MSBs with a physical presence in the United States."
So, even if BitGrail is an European exchange, there is the necessity to comply with laws from all around the world, americans too (KYC included). This means verifying users and their origins, in order to check if they could use BitGrail or not.
You could find some workaround, but BitGrail want to operate according to law. Then KYC is fundamental (although fan of privacy). It’s not possible to give an ETA about each single verification, there are a lot of them, and time is needed. Accounts with large amounts may require different time and different document requeste, leading to slower verifications.
Many complained of the sudden changes of ToS without prior notification. Keep in mind that nothing has changed if not the amounts that for BitGrail can be wihdrawn without leading to problems about AML.
Specifically, who carefully read, noticed:"Maintaining your Account: our rules" "...If there is suspicious activity related to your Account, we may, but are not obligated, to request additional information from you, including authenticating documents, and to freeze any transactions pending our review..." All transactions made by EXTRA-EU could be, currently, potentially suspect according to what has been cited above.
Another important point, please remember that whenever you want you are free to close your account: "Termination and escrow of unverified accounts" "...You may terminate this agreement with BitGrail, and close your Account at any time..." "...The suspension of an Account shall not affect the payment of the commissions due for past Transactions. Upon termination, Members shall communicate a valid Bitcoin Address to allow for the transfer of any currencies credited to their account. BitGrail will convert all the Cryptocurrencies in Bitcoin and shall transfer this amount as soon as possible following the Member's request in the time frames specified by BitGrail. Upon Account closing, any amount less than 0.005 Bitcoin in value will not be returned..." A new page that should let users close their accounts without using tickets is under development.
Not verified and EXTRA-EU users will have to close their accounts on BitGrail. Do not worry, in case they will receive notice, this is just an anticipation. From the moment that the official statement will be visible on the site, these users will have two (2) weeks for accepting new (upcoming) TOS where will be clearly wrote that EXTRA-EU users won’t be able to use BitGrail accounts anymore. As said already, this is an European company, which can guarantee to operate according to European laws only in European countries.
Personally, furthermore, I would avoid risking legal troubles for who insults and threatens me.
Being the CEO of BitGrail, whatever “hits” the site, “hits” me. This is stressful and annoying. You can certainly understand it, partially at least.
This is a platformwhich started working an possible interesting coin on May 2017, with transparency in mind. I worked on XRB and created an exchange where users have traded it for months.
Then, something happened. The faucet has been closed and the roadmap of that project changed, reducing the total supply, maybe in favor of “early adopters” and big holders, who until that moment were not so much. I don’t know if it caused or not a voluntary manipulation, also exploiting the fact that the coin was mainly only on two exchanges during 2017. Why am I talking about that? Because some accused me of manipulating the market (now and in the past). Please everybody remember that I’m not and I’ve never been part of the RaiBlocks team. I’m just one of the first who developed for this coin, when it was totally unknown.
However, the consequence on BitGrail has been important: huge daily volumes, suddenly. Incredible number of connections, users. All without being ready, with risks for legal of technical problems (reason of servers updates and other things), with me being the target.
Rolled up sleeves, working night and day, no Christmas or New Year Eve, in order to optimize the platform while the system was under stress, due to requests 20 times higher than some previous days.
Many things have been done and many others are under development right now.
Between the important things to take care, there is also the aspect of the law -> KYC and new upcoming TOS.
Now, XRB deposits and withdrawals are not availalbe at the moment (same for LSK and CFT; LTC tickets should be fixed asap). But there is the possiblity to use BTC if someone just want to withdraw. That’s because BTC is aimed to stay fully functional (maybe with rare and/or unpredictable exceptions). This is the reason why, like written in the TOS, in case of closing an account, the balance will be sent to the user as BTC.
In conclusion, I would like to say again that, if someone consider himself better in the management of the situation, he can make an offer to take over BitGrail, instead of insulting and criticizing with anonymous accounts.
Thanks for your attention. Francesco
submitted by TheBomber9 to BitGrailExchange [link] [comments]

How do you use Bitcoin and Python?

To get started with Bitcoin using Python, we need,
Setup your Computer:
Install Python
Download and install python from
Install bitcoin python library
After you finish installing Python, open your command line program and execute below command to install bitcoin python library
pip install bitcoin
Hello Bitcoin — Generate a Private key
We will start with a writing a “Hello World” equivalent of Bitcoin in Python. To write your python, you can need a code or text editor which supports writing in ASCII format. You cannot use MS Word of Wordpad for this. You could use Notepad, but we recommend using Atom Code Editor, a free code editor.
Open your favorite editor and type in below code. In this code, we are first importing the bitcoin library. We are then generating a private key using random_key function and we are then displaying the private key on the screen.
  1. from bitcoin import *my_private_key = random_key()print(my_private_key)Save it as a .py file and then open your command line program and run the above program like this.python
This will print out a private key.
Generate a Public Key
Next we generate a public key. We do this by passing the private key we generated to privtopub function
  1. from bitcoin import *my_private_key = random_key()my_public_key = privtopub(my_private_key)print(my_public_key
Create a bitcoin address
In the previous programs we generated private and public keys. Now, we are going to real bitcoin part. In the below code, we are generating a bitcoin address by passing the public key we generated to pubtoaddr function.
  1. from bitcoin import *my_private_key = random_key()my_public_key = privtopub(my_private_key)my_bitcoin_address = pubtoaddr(my_public_key)print(addr)
Create a Multi-signature Address
Next, we create a multi-signature bitcoin address. Multi-signature address is an address that is associated with more than one private key. So, we first create 3 public and private keys. We then create a multi-sig by passing the 3 public keys to mk_multisig_script function. Finally, the resulting multi-sig is passed to scriptaddr function to create the multi signature bitcoin address.
  1. from bitcoin import *my_private_key1 = random_key()print(‘Private Key 1: ‘ + my_private_key1)my_public_key1 = privtopub(my_private_key1)print(‘Public Key 1: ‘ + my_public_key1)my_private_key2 = random_key()print(‘Private Key 2: ‘ + my_private_key2)my_public_key2 = privtopub(my_private_key2)print(‘Public Key 2: ‘ + my_public_key2)my_private_key3 = random_key()print(‘Private Key 3: ‘ + my_private_key3)my_public_key3 = privtopub(my_private_key3)print(‘Public Key 3: ‘ + my_public_key3)my_multi_sig = mk_multisig_script(my_private_key1, my_private_key2, my_private_key3, 2,3)my_multi_address = scriptaddr(my_multi_sig)print(‘Multi-Address: ‘ + my_multi_address)
View address transaction history
We can also look at pre-existing bitcoin addresses’ transactional history. We do this passing a valid bitcoin address to function history.
  1. from bitcoin import *print(history(a_vaid_bitcoin_address))
If you don’t have an address, you can look one up from Blockchain.
In this tutorial, we introduced bitcoin with python. We saw how to get set up with python for bitcoin. We saw how to generate a private key, public key, and a bitcoin address. We also saw how to create a multi-signature bitcoin address and how to look at the transactional history of a bitcoin address.
submitted by alifkhalil469 to BtcNewz [link] [comments]

[7 mbtc] Quizchain 2 Block 50

Thank you for playing the quizchain. Last block was way too simple. Actually I made a mistake when posting. I disclosed the TOMI field when posting about the format, wrote "TOMI Google slogan" instead of "TOMI [TOMI].
Probably would not have been much more difficult without that mistake, but at least it would not have been a pure race to confirmation.
And sorry, no big block for that mistake. I do those only if the mistake in question makes it more difficult to solve a block.
Anyway, this block will be much more difficult again. May well need a hint, in which case the hint will come up in 24 hours from now.
Normal 7 mbtc block (now more than $80), funding transaction below.
Question: 111111111111111111111
Format: [solution] TOMI [TOMI]
First three digits of MD5 hash are c32.
First digit of solution only Md5 hash is 8.
First two digits of TOMI field only MD5 hash are 64.
Have fun challenging this slightly more difficult block and stay tuned for block 51 coming up tomorrow (Thursday) 8 am Japanese time.
Update: Solved and prize claimed a couple of hours after posting.
As explained by the winner in a comment below, solution was "4oLvT2" and TOMI field was "address checksum". That is because the 21 ones are a very short valid Bitcoin address. Once you see that, it is only a question of finding the checksum, which the winner did by using a block explorer.
I found this in this bitcointalk post when researching address checksums:
submitted by AoiNakamoto to Grycoin [link] [comments]

How to fix Bitcoin Cash invalid wallet address problem ... Coinbase - How to Find your Bitcoin wallet address - YouTube How to Verify a Bitcoin address generated by Bitaddress ... How to find your bitcoin address on - YouTube how to hack bitcoin address 2017 - YouTube

Hello, whenever I try to send bitcoins from localbitcoins to my electrum wallet, it says invalid bitcoin address. However, I just copy the address from receiving tab ( tried multiple ) and copy it to the place I need to. The address is 42 digits long and does not start with number With our online tool, you can verify and validate if a Bitcoin address or multiple addresses are valid. Bitcoin Address allowed by our tool are base58 or xpub format. Our tool will check up to 50 Bitcoin addresses by process, if you want to check more than 50 addresses, please divide your list and check up to 50 addresses at a time. The process will check before if there is any duplicate ... A valid Bitcoin address is like a bank account number using which you store your bitcoins and check your balances. For those who are seeing their Bitcoin addresses for the first time, I would say that it won’t look like traditional bank account number but instead, it looks like a long alphanumeric string starting usually with ‘1’ or ‘3”. And for those who haven’t seen a Bitcoin ... Valid Address Checker. One of the current problems for novice users of bitcoin is the large address that is sent to and from other users. Additionally, once funds are sent there is no way to retrieve them. Finding the physical owner of a bitcoin address could also be problematic, so the best thing is to have a Valid Address Checker. In this ... Write a program that takes a bitcoin address as argument, and checks whether or not this address is valid. A bitcoin address uses a base58 encoding, which uses an alphabet of the characters 0 .. 9, A ..Z, a .. z, but without the four characters: 0 zero O uppercase oh I uppercase eye l lowercase ell; With this encoding, a bitcoin address encodes 25 bytes: the first byte is the version number ...

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How to fix Bitcoin Cash invalid wallet address problem ...

Link :: For more tricks :: Bitcoin cash BCH Invalid wallet address problem sloved how to fix s... The Crypto Dad goes through the steps involved in verifying the webpage at is a website that allows you to generate a u... While a Bitcoin address works in a similar way to a bank account number, it is much more than that... Skip navigation Sign in. Search. Loading... Close. This video is unavailable. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. In this video I go over how to create a simple form that validates the checksum of a bitcoin address. Link to RosettaCode: