Bitcoin Wallet (BTC). Erstellen Sie eine Bitcoin Wallet ...

Bitcoin Brainwallet Brain Wallet SHA256 Address Generator

submitted by brainwalletsinfo2 to u/brainwalletsinfo2 [link] [comments]

brainwallet.io - deterministic bitcoin address generator

submitted by coincrazyy to BitcoinAll [link] [comments]

Brainwallet.io Updates (0) Random Passphrase Generator & Choose Your Salt /r/Bitcoin

Brainwallet.io Updates (0) Random Passphrase Generator & Choose Your Salt /Bitcoin submitted by coincrazyy to BitcoinAll [link] [comments]

BTM on Brainwallet - JavaScript Client-Side Bitcoin Address Generator

submitted by MarkPfennig to Bitmark [link] [comments]

brainwallet.io - deterministic bitcoin address generator

submitted by HostFat to bitcoinxt [link] [comments]

Brainwallet generator for Bitcoin & many alt coins

submitted by spottedmarley to Bitcoin [link] [comments]

Brainwallet - JavaScript Client-Side Bitcoin Address Generator

submitted by Anenome5 to BitcoinWallet [link] [comments]

Brainwallet - JavaScript Client-Side Bitcoin Address Generator

submitted by bVector to NSL [link] [comments]

The first brainwallet generated address used? /r/Bitcoin

The first brainwallet generated address used? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoin Newcomers FAQ - Please read!

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
It all started with the release of the release of Satoshi Nakamoto's whitepaper however that will probably go over the head of most readers so we recommend the following videos for a good starting point for understanding how bitcoin works and a little about its long term potential:
Some other great resources include Lopp.net, the Princeton crypto series and James D'Angelo's Bitcoin 101 Blackboard series.
Some excellent writing on Bitcoin's value proposition and future can be found at the Satoshi Nakamoto Institute.
Some Bitcoin statistics can be found here and here. Developer resources can be found here. Peer-reviewed research papers can be found here.
Potential upcoming protocol improvements and scaling resources here and here.
The number of times Bitcoin was declared dead by the media can be found here (LOL!)

Key properties of Bitcoin

Where can I buy bitcoins?

Bitcoin.org and BuyBitcoinWorldwide.com are helpful sites for beginners. You can buy or sell any amount of bitcoin (even just a few dollars worth) and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also check out the bitcoinity exchange resources for a larger list of options for purchases.
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy OTP Auth
Android Android N/A
iOS iOS iOS

Watch out for scams

As mentioned above, Bitcoin is decentralized, which by definition means there is no official website or Twitter handle or spokesperson or CEO. However, all money attracts thieves. This combination unfortunately results in scammers running official sounding names or pretending to be an authority on YouTube or social media. Many scammers throughout the years have claimed to be the inventor of Bitcoin. Websites like bitcoin(dot)com and the btc subreddit are active scams. Almost all altcoins (shitcoins) are marketed heavily with big promises but are really just designed to separate you from your bitcoin. So be careful: any resource, including all linked in this document, may in the future turn evil. Don't trust, verify. Also as they say in our community "Not your keys, not your coins".

Where can I spend bitcoins?

Check out spendabit or bitcoin directory for millions of merchant options. Also you can spend bitcoin anywhere visa is accepted with bitcoin debit cards such as the CashApp card. Some other useful site are listed below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Spendabit, Overstock and The Bitcoin Directory Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, LivingRoomofSatoshi, Coinsfer, and more Bill payment
Menufy, Takeaway and Thuisbezorgd NL Takeout delivered to your door
Expedia, Cheapair, Destinia, Abitsky, SkyTours, the Travel category on Gyft and 9flats For when you need to get away
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun Domain name registration
Stampnik Discounted USPS Priority, Express, First-Class mail postage
Coinmap and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. If you would prefer to keep it simple there are several good options. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, Cryptogrind, Coinality, Bitgigs, /Jobs4Bitcoins, BitforTip, Rein Project Freelancing
Lolli Earn bitcoin when you shop online!
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
/GirlsGoneBitcoin NSFW Adult services
A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins.

Bitcoin-Related Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network Second layer scaling
Blockstream, Rootstock and Drivechain Sidechains
Hivemind and Augur Prediction markets
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
JoinMarket and Wasabi Wallet CoinJoin implementation
Coinffeine and Bisq Decentralized bitcoin exchanges
Keybase Identity & Reputation management
Abra Global P2P money transmitter network
Bitcore Open source Bitcoin javascript library

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
bitcoin BTC 1 bitcoin one bitcoin is equal to 100 million satoshis
millibitcoin mBTC 1,000 per bitcoin used as default unit in recent Electrum wallet releases
bit bit 1,000,000 per bitcoin colloquial "slang" term for microbitcoin (μBTC)
satoshi sat 100,000,000 per bitcoin smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $10000 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit.
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BitcoinFan7 to Bitcoin [link] [comments]

Bitcoins stoled, lost. Please help me to understand

Look you can call me dumb, stupid, or whatever you like for my mistakes. But if someone can help me to understand how it happens, and what can I do about it I thank you very much.
So I decided to start with Bitcoin after I bought all I could I choose to transfer into a cold wallet because I was afraid my computer would break (I bought it 8 years ago). I couldn't buy a hardware wallet yet like trezor yet, so I found some people indicated this bitadress.org and I used it to create a brain wallet with 16 words (not random generated words).
I used my android phone to do that, downloaded from Github, and turned off the internet connection. After I created the wallet I cleaned up the cache data and restarted the phone. Later I transferred my bitcoins there.
Some days later, my bitcoins are gone.
Here is the wallet that I created: https://www.blockchain.com/btc/address/1E8f6DqeFvb5VATwtwvNSkkxqohSP2QmjB
And here is the wallet who have now my bitcoins: https://www.blockchain.com/btc/address/bc1qvgdzh88hhnrme35m848aglnjsacwa7cfe4x9zl
I didn't know much about it, and obviously I still don't know much about it.
I live in Brazil, I started to research about bitcoins this year, and because of the economy here is being really bad I decided to save my money using Bitcoin, also because I loved it, the idea, the principles, everything. It's really difficult to find some information about it here in BR, some tutorials are too old.
To some people, it is a short amount of 0.198 BTC, but understand that here in Brazil It was really difficult for me to get this amount, and it is impossible to get again, it is everything I had. Now I'm completely lost.
I'm not a rich person, and this not seem like a huge amount of money stoled, but just imagine it, I work all month 44 hours a week to earn something like 500 USD here in Brazilian money "Real". I saved years to buy a cheap motorcycle, and I needed to sell it this year to help with my bills, but most I decided to save for helping me and my family in the chaotic future coming soon here in Brazil.
I know it is impossible to get it back, but please if some of you can help me to understand how it happens, what can I do, or help me to get at last a part of this back I thank you very much.
Every helpful information will be good not just for me, but for others in the future who will join this.
(Sorry for any English mistakes)
submitted by romanof13 to Bitcoin [link] [comments]

Experiment: Money sent to brainwallet w/ password "mike" stolen within 1 second

Experiment: Money sent to brainwallet w/ password submitted by fortunative to Bitcoin [link] [comments]

/r/Bitcoin FAQ - Newcomers please read

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
The following videos are a good starting point for understanding how bitcoin works and a little about its long term potential:
For some more great introductory videos check out Andreas Antonopoulos's YouTube playlists, he is probably the best bitcoin educator out there today. Also have to give mention to James D'Angelo's Bitcoin 101 Blackboard series. Lots of additional video resources can be found at the videos wiki page or /BitcoinTV.
Key properties of bitcoin
Some excellent writing on Bitcoin's value proposition and future can be found here. Bitcoin statistics can be found here, here and here. Developer resources can be found here and here. Peer-reviewed research papers can be found here. The number of times Bitcoin was declared dead by the media can be found here. Scaling resources here, and of course the whitepaper that started it all.

Where can I buy bitcoins?

BuyBitcoinWorldwide.com and Howtobuybitcoin.io are helpful sites for beginners. You can buy or sell any amount of bitcoin and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also, check out the bitcoinity exchange resources for a larger list of options for purchases.
Bank Transfer Credit / Debit card Cash
Coinbase Coinbase LocalBitcoins
Gemini Bitstamp LibertyX
GDAX Bitit Mycelium LocalTrader
Bitstamp Cex.io BitQuick
Kraken CoinMama WallofCoins
Xapo BitcoinOTC
Cex.io
itBit
Bitit
Bitsquare
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Cashila or Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Android iOs Desktop
Mycelium BreadWallet Electrum
CoPay AirBitz Armory
Another interesting use case for physical storage/transfer is the Opendime. Opendime is a small USB stick that allows you to spend Bitcoin by physically passing it along so it's anonymous and tangible like cash.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account, usually from a text message or app, making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy
Android Android
iOS iOS

Where can I spend bitcoins?

A more comprehensive list can be found at the Trade FAQ but some more commons ones are below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Steam, HumbleBundle, Games Planet, itch.io, g2g and kinguin For when you need to get your game on
Microsoft Xbox games, phone apps and software
Spendabit, The Bitcoin Shop, Overstock, DuoSearch, The Bitcoin Directory and BazaarBay Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Cashila, Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, Pey.de, LivingRoomofSatoshi, Hyphen.to, Coinsfer, GetPaidinBitcoin, Coins.co.th, More #1, #2 Bill payment
Foodler, Menufy, Takeaway, Thuisbezorgd NL, Pizza For Coins Takeout delivered to your door!
Expedia, Cheapair, Lot, Destinia, BTCTrip, Abitsky, SkyTours, Fluege the Travel category on Gyft and 9flats For when you need to get away
BoltVM, BitHost VPS service
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun For new domain name registration
Stampnik and GetUSPS Discounted USPS Priority, Express, First-Class mail postage
Reddit Gold Premium membership which can be gifted to others
Coinmap, 99Bitcoins and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations, such as Wikipedia, Red Cross, Amnesty International, United Way, ACLU and the EFF. You can find a longer list here.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. Bitseed is an easy option for getting set up. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, XBTfreelancer, Cryptogrind, Bitlancerr, Coinality, Bitgigs, /Jobs4Bitcoins, Rein Project Freelancing
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
Watchmybit, Streamium.io, OTika.tv, XOtika.tv NSFW, /GirlsGoneBitcoin NSFW Video Streaming
Bitasker, BitforTip, WillPayCoin Tasks
Supload.com, SatoshiBox, JoyStream, File Army File/Image Sharing
CoinAd, A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins)

Bitcoin Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network, Amiko Pay, and Strawpay Payment channels for network scaling
Blockstream and Drivechain Sidechains
21, Inc. Open source library for the machine payable web
ShapeShift.io Trade between bitcoins and altcoins easily
Open Transactions, Counterparty, Omni, Open Assets, Symbiont and Chain Financial asset platforms
Hivemind and Augur Prediction markets
Mirror Smart contracts
Mediachain Decentralized media library
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
Samourai and Dark Wallet - abandoned Privacy-enhancing wallets
JoinMarket CoinJoin implementation (Increase privacy and/or Earn interest on bitcoin holdings)
Coinffeine and Bitsquare Decentralized bitcoin exchanges
Keybase and Bitrated Identity & Reputation management
Bitmesh and Telehash Mesh networking
JoyStream BitTorrent client with paid seeding
MORPHiS Decentralized, encrypted internet
Storj and Sia Decentralized file storage
Streamium and Faradam Pay in real time for on-demand services
Abra Global P2P money transmitter network
bitSIM PIN secure hardware token between SIM & Phone
Identifi Decentralized address book w/ ratings system
Coinometrics Institutional-level Bitcoin Data & Research
Blocktrail and BitGo Multisig bitcoin API
Bitcore Open source Bitcoin javascript library
Insight Open source blockchain API
Leet Kill your friends and take their money ;)

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
millibitcoin mBTC 1,000 per bitcoin SI unit for milli i.e. millilitre (mL) or millimetre (mm)
microbitcoin μBTC 1,000,000 per bitcoin SI unit for micro i.e microlitre (μL) or micrometre (μm)
bit bit 1,000,000 per bitcoin Colloquial "slang" term for microbitcoin
satoshi sat 100,000,000 per bitcoin Smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $500 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit. A complete list of bitcoin related subreddits can be found here
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BinaryResult to Bitcoin [link] [comments]

35 of my BTC gone. PC not compromised.

I had 35 Bitcoin spread across 18 wallets and the coins have been sitting idle for months. Sometime last night, all 35 coins were moved to two addresses:
1cvvnsUpaAvatvfDKgixRYvSdGLDfA4CA and 18rmY7jHdk4mrdMN46ERbFXm8YvM6ZDFo3
I'm still in shock basically as to how I let this happen, as I had thought that having my coins spread across 18 wallets with 18 different private keys was going to work. I'm confident that neither my PC or my offline backups were compromised. I'll update here if I can somehow figure out what happened, still very crushed that 95% of my bitcoin holdings are now gone and moved to an address that isn't in my control.
Edit: I was an idiot and assumed that the "random" button on brainwallet.org was truly random, but it clearly is not. My coins were taken by someone who is clearly smarter than myself and this is completely my fault by creating Bitcoin addresses on a website that I assumed was safe. There's a $20k life lesson that I'll never forget, that's for sure. Also, to elaborate, I did not use the passphrase functionality on brainwallet.org, I used the random button to create the addresses.
Final Edit: My coins have been returned to me!!!! PSA to anyone planning on using the random function on brainwallet.org. DONT DO IT! It is not secure. I am one lucky dumbass!
submitted by LostAllOfMyBtc to Bitcoin [link] [comments]

Publicnote Bitcoin Treasure Hunt (.01337 BTC)

Time for some crypto trivia! I placed 10 private keys into notes at publicnote.com. Each key holds 0.001337 BTC.
To find a private key, you must enter the correct title. Find it, and it's yours to keep.
There are 10 clues, but I will start with one three. Every time 10 new users comment in this thread, I will reveal a new clue. (This is done so the first person who sees the thread doesn't claim all prizes at once.)
To prove that this contest is real, each bitcoin address was generated using the title as the seed to a brainwallet, with "publicnote" as the salt. Solutions will be published after all coins are claimed. Solutions to any unsolved puzzles will be revealed after 48 hours.
Have fun, and if this is well received I'd be happy to do many more!

Clue #1: Genesis block
17Bf5hGGcRqCw7raUXY69f6WA3hh3XGkmQ
Answer: 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f

Clue #2: Crypto imbeciles
1G8grDWZyygik6WWs1SSWPVfeZkchGTdAU
Answer: Roger Ver and Craig Wright

Clue #3: Why did the chikun cross the road?
15ujHTu27qWJKVuxfZBRpLuNXWT7SAaE7e
Answer: to buy litecoin

Clue #4: Father of A.I.
1Ze2XKYivKrSGzFGwLajiFKeq7dX1z1hp
Answer: Alan Mathison Turing

Clue #5: The first and only certified hardware wallet
18t3FaeCgzqgqV6gy5WzspHt84HhaR2Zjb
Answer: Ledger Nano S

Clue #6: Bitcoin spokesperson and awesome guy
1Fv6peqsmfBRts4nUs8EZWSXqYyrpmnTQ4
Answer: Andreas M. Antonopoulos

Clue #7: Hodl creator
1BLqrJNigwEQZAxG2tYTBZZtrmMJD4DnJX
Answer: GameKyuubi

Clue #8: In 2012, this site was responsible for more Bitcoin transactions than all other uses of Bitcoin combined.
1ADwCtdKnWdFDjxSZBF9jXN3SUNvNDHhPr
Answer: Satoshi Dice

Clue #9: Failed Ethereum smart contract that led Vitalik Buterin to modify the blockchain
1BFpgMHcmK5X2W77vEZCP4pawYRGUc4PRx
Answer: The DAO

Clue #10: Japanese name
18PFfLSpHoexKc5hbbY8aDrRz3rahff7q6
Answer: 中本聡


All prizes have been claimed! Thanks for playing everyone! I'll be sure to do this again soon, but with more money and harder clues.

(Thanks for the gold!)
submitted by unchikuso to Bitcoin [link] [comments]

/r/Bitcoin FAQ - Newcomers please read

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
Some great introductions for new users are My first bitcoin, Bitcoin explained and ELI5 Bitcoin. Also, the following videos are a good starting point for understanding how bitcoin works and a little about its long term potential:
Also have to give mention to Lopp.net, the Princeton crypto series and James D'Angelo's Bitcoin 101 Blackboard series. Some excellent writing on Bitcoin's value proposition and future can be found at the Satoshi Nakamoto Institute. Bitcoin statistics can be found here, here and here. Developer resources can be found here, here and here. Peer-reviewed research papers can be found here. Potential upcoming protocol improvements here. Scaling resources here. The number of times Bitcoin was declared dead by the media can be found here (LOL!), and of course Satoshi Nakamoto's whitepaper that started it all! :)
Key properties of bitcoin

Where can I buy bitcoins?

Bitcoin.org, BuyBitcoinWorldwide.com and Howtobuybitcoin.io are helpful sites for beginners. You can buy or sell any amount of bitcoin and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also, check out the bitcoinity exchange resources for a larger list of options for purchases.
Bank Transfer Credit / Debit card Cash
Gemini Bitstamp LocalBitcoins
Bitstamp Bitit Mycelium LocalTrader
BitFinex Cex.io LibertyX
Cex.io CoinMama WallofCoins
Xapo Spectrocoin BitcoinOTC
Kraken Luno BitQuick
itBit
HitBTC
Bitit
Bisq (decentralized)
Luno
Spectrocoin
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Android iOs Desktop
Samouari BreadWallet Electrum
Another interesting use case for physical storage/transfer is the Opendime. Opendime is a small USB stick that allows you to spend Bitcoin by physically passing it along so it's anonymous and tangible like cash.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account, usually from a text message or app, making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy
Android Android
iOS iOS

Where can I spend bitcoins?

Check out spendabit or bitcoin directory for some good options, some of the more commons ones are listed below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Steam, HumbleBundle, Games Planet, itch.io, g2g and kinguin For when you need to get your game on
Microsoft Xbox games, phone apps and software
Spendabit, Overstock, The Bitcoin Directory and BazaarBay Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, LivingRoomofSatoshi, Hyphen.to, Coinsfer, More #1, #2 Bill payment
Menufy, Takeaway, Thuisbezorgd NL, Pizza For Coins Takeout delivered to your door!
Expedia, Cheapair, Lot, Destinia, BTCTrip, Abitsky, SkyTours, Fluege the Travel category on Gyft and 9flats For when you need to get away
BitHost VPS service
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun For new domain name registration
Stampnik Discounted USPS Priority, Express, First-Class mail postage
Reddit Gold Premium membership which can be gifted to others
Coinmap and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations, such as Wikipedia, United Way, ACLU and the EFF. You can find a longer list here.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. Bitseed is an easy option for getting set up. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, XBTfreelancer, Cryptogrind, Bitlancerr, Coinality, Bitgigs, /Jobs4Bitcoins, Rein Project Freelancing
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
Streamium.io, XOtika.tv NSFW, /GirlsGoneBitcoin NSFW Video Streaming
Bitasker, BitforTip Tasks
Supload.com, SatoshiBox, JoyStream, File Army File/Image Sharing
CoinAd, A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins)

Bitcoin Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network, Amiko Pay, and Strawpay Payment channels for network scaling
Blockstream, Rootstock and Drivechain Sidechains
21, Inc. Open source library for the machine payable web
ShapeShift.io Trade between bitcoins and altcoins easily
Open Transactions, Counterparty, Omni, Open Assets, Symbiont and Chain Financial asset platforms
Hivemind and Augur Prediction markets
Mediachain Decentralized media library
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
Samourai and Dark Wallet - abandoned Privacy-enhancing wallets
JoinMarket CoinJoin implementation (Increase privacy and/or Earn interest on bitcoin holdings)
Coinffeine and Bisq Decentralized bitcoin exchanges
Keybase and Bitrated Identity & Reputation management
Telehash Mesh networking
JoyStream BitTorrent client with paid seeding
MORPHiS Decentralized, encrypted internet
Storj and Sia Decentralized file storage
Streamium Pay in real time for on-demand services
Abra Global P2P money transmitter network
bitSIM PIN secure hardware token between SIM & Phone
Identifi Decentralized address book w/ ratings system
BitGo Multisig bitcoin API
Bitcore Open source Bitcoin javascript library
Insight Open source blockchain API
Leet Kill your friends and take their money ;)

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
millibitcoin mBTC 1,000 per bitcoin SI unit for milli i.e. millilitre (mL) or millimetre (mm)
microbitcoin μBTC 1,000,000 per bitcoin SI unit for micro i.e microlitre (μL) or micrometre (μm)
bit bit 1,000,000 per bitcoin Colloquial "slang" term for microbitcoin
satoshi sat 100,000,000 per bitcoin Smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $10000 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit. A complete list of bitcoin related subreddits can be found here
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BinaryResult to Bitcoin [link] [comments]

Publicnote Bitcoin Treasure Hunt 2 (0.01337 BTC)

Time for another quick round. One private key hodling 0.01337 BTC has been placed into a note at publicnote.com.
To find the private key, you must enter the correct title. Find it, and it's yours to keep.

Here’s your clue: 1FXYAEwj2Ckm5EdWnGPEPg==

Prize: https://www.blockchain.com/btc/address/1CEeC4zJp5z2todhd5tteCvCLnSzmdvbs5
Additional clues are planted all over publicnote. Participants are welcome to modify clues or plant new ones to throw others off. I will be updating clues as well.
To prove that this contest is real, the bitcoin address was generated using the correct title as the seed to a brainwallet, with "publicnote" as the salt. The solution will be published after the prize is claimed. There is no time limit.
Have fun!

Congrats to mooncritic for solving the puzzle! The correct answer was:

The danger is if people are buying bitcoins in the expectation that the price will go up, and the resulting increased demand is what is driving the price up. That is the definition of a BUBBLE, and as we all know, bubbles burst.
- Hal Finney
submitted by unchikuso to Bitcoin [link] [comments]

Brainwallet shut down permanently due to presentation

Brainwallet shut down permanently due to presentation submitted by GibbsSamplePlatter to Bitcoin [link] [comments]

Monero Brainwallet Generator

Monero Brainwallet Generator

Warning: in nearly all cases, the use of a brainwallet is extremely high-risk/stupid. Do not use this tool unless you have a clear need and understand the risks.
The tool can be found at http://www.monerobrainwallet.com/.
A brainwallet is a Monero address and keyset derived from a user-defined passphrase. This allows the seed to literally never be written down or typed, and therefore ensures (in theory) that the funds in the associated address are safe forever within the brain of the creator. In reality, humans are shockingly poor sources of entropy and the phrases that they create are notoriously easy to crack (albiet far more difficult in Monero than Bitcoin due to the underlying architecture). Nevertheless, in very specific scenarios and use cases (e.g. crossing hostile borders, fast-approaching malign forces) they do have a role to play. If you are unsure at all or are unaware of the risks - do not use this tool.
Here is a good talk on how someone managed to gain access to large numbers of Bitcoins by exploiting poor entropy in brainwallet creation in Bitcoin. Don't be a statistic :)
The github repository for this site can be found here.
This tool was made by taushet on as a fork of Luigi1111's toolkit. If you want to donate Monero to support the core development team, send it here: donate.getmonero.org. If you want to buy me a beehelp pay for hosting, send some Monero here: 4BHeoptXyZ4BkqHcyQo6QSA51q7M9uYAKB75bAuCwcbUavsbcjwe6ocJhRDyJCHSTd9Cenq418xq3P2dZK2J1CVHKbkTjTi.
submitted by taushet to Monero [link] [comments]

Where to buy physical/replica metal coins?

Every news article about cryptocurrencies has thumbnail images of gold and silver coins with the crypto logos on them. While I know that's just an illustration, a lot of them look pretty cool and I would kind of like a coin collection to represent my crypto portfolio.
Does anyone know a good place to get physical replica coins? I don't actually want them to hold private keys like a Casascius coin, I just want them as collectibles.
submitted by PedanticPendant to CryptoCurrency [link] [comments]

I invested all of my Bitcoin to a brain wallet.... it's gone. Help me understand what happened?

So, I've been buying bitcoin for a while, little by little, and decided to create a "savings" account of sorts. I thought a really sweet way to handle it was to create a brain wallet.
I used the tool here: http://bitcointools.appspot.com
I memorized an arbitrary string of letters and numbers to create a private key and address. I found it super cool because this address has never been attached to a wallet of any sort on any computer, so I thought it'd be super freaking secure. If I ever needed any of its funds, I'd punch in the generated private key and attach it to a new wallet.
Here's my address, created entirely from my memorized string of characters sent through one round of SHA256:
https://blockchain.info/address/14kzRY5rLmXUwgM2ZKbMtWSfouuvpT2PAL
I had 18.5BTC here. As of today, it's all gone. A transaction happened earlier today that I certainly didn't initiate. It was all sent to a brand new address I've never seen before, and the transfer of my BTC to this one is the only transaction ever for this other address.
I'm wrecked. This is a ton of money, and I thought I had the safest solution ever using a brain wallet. The private key string of mine was not at all cryptologically inpenetrable.... however I can't fathom how it would have been brute forced or "guessed". It was a string of letters and numbers with a discernible pattern, but it is a string of characters that I guarantee have never been typed on the internet, ever, outside of the two or three times I typed it out on the bitcointools address to confirm that I wasn't accidentally sending my bitcoin to a black hole.
Reddit, how does something like this happen? Is there some kind of absurd chance that the funds transferred to this new address somehow have an assocation with the private key that generated my original address? Is there some chance that the bitcoin appspot website tracks stuff people type to steal wallets?
I'm even willing to share the damn private key string I invented to someone respectable in the Bitcoin community to help them do research on what happened. I have nothing to lose. This really, really sucks. I decided to be "safe" and put everything there, so that's all the BTC I ever had.
EDIT: looks like the only logical explanation is that the bitcointools site is being run by a scammer. Why it took a month for him to steal my coins I have no damn idea, but I'm devastated. :( Guys, please upvote this so people can be aware to NOT create brain wallets using this damn site!!
I've learned my lesson for the future. Once I get out of this state of shock, I'm going to get an encrypted wallet.dat, put it in a safe place, back it up, lock it up, and that will be the end of it. All offline.
EDIT 2: to you guys who sent btc tips to me to help me return, I thank you very, very much.
submitted by Turkeyslam to Bitcoin [link] [comments]

A test of Brainwallet passphrases.

This was not an exhaustive test, just a little impromptu experiment. The idea was to see what works and what doesn't. Specifically the idea was to make the minimum, or below minimum passphrase and see how quickly it gets snatched.
First off the addresses that were swiped were swiped between 4 and 33 seconds after sending bitcoin to them. So it doesn't take long. The ones that didn't get snatched, well, they lasted a week or so before I was satisfied and I moved the bitcoin back to my own, secure wallet.
Here's the list:
perfume invisible --- taken within seconds.
bugjest --- also taken within seconds
threaded claRity --- never taken
***!!!*** --- also quickly swiped
it was the best of times --- gone in 4 seconds
completionacknowledged --- gone in 30 seconds
shuffles39 --- never taken
bg98R3wS --- never taken
 And last but not least: 
You stay classy San Diego --- never taken
I actually thought the last one would get stolen, but apparently there aren't any big Anchorman fans among bitcoin thieves.
The one thing this points out to me is how strong a few numbers or random capitalizations make a passphrase. Had I done "it was the bEst of times" the bitcoin would probably still be there.
FYI the amount I sent to each address was only about 0.01 in case you're wondering.
submitted by baillou2 to Bitcoin [link] [comments]

Bitcoin cracker tool and segwit with balance How to Make a Dr. Evil Bitcoin Brain Wallet - Video Tutorial Bitcoin Brainwallet Database Hack 2020 - YouTube Hardware BITCOIN Brain WALLET GENERATOR Bitcoin Daytrader - YouTube

This feature works for private keys made here as well as those generated using any other Bitcoin service or software, e.g. bitaddress.org or brainwallet.org. Enter or scan any private key to verify that the key is valid and show its corresponding public key. If your private key validates, then you may be reassured that you will able to retrieve ... Bitcoin Brainwallet Generator. Secret Phrase. Enter a secret phrase here. The only place you should keep this is in your head! Private Key. Memorize the secret phrase instead of saving this key anywhere. Bitcoin Address. This is your public address to store bitcoins in. ... Brainwallet Generator. If you have trust issues with third-party services (BTC.com, Blockchain.com, BitGo.com, Coinbase.com, etc) securing your Bitcoin, Altcoin, or other Cryptocurrency, you will want a Brainwallet – the most affordable and secure solution today. You may lose your hardware wallet, computers and devices can die, and online web ... Bitcoin wallet is suitable for all devices and platforms, including Windows, Linux and Mac OS. 7. BrainWallet Generator You can use the wallet as a BrainWallet (Bitcoin Brain Wallet). All that is after the "#" sign in the url is your BrainWallet (use at least 12 characters). Example: ... Client-side Bitcoin address and deterministic wallets generator, Base58 converter, transaction builder, signing and verifying messages with Bitcoin address bitcoin address generator Toggle navigation Brainwallet

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Bitcoin cracker tool and segwit with balance

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