Hashcash - The Book of Bitcoin

Bitcoin - The Internet of Money

/btc was created to foster and support free and open Bitcoin discussion about cryptocurrency, Bitcoin news, and exclusive AMA (Ask Me Anything) interviews from top Bitcoin and cryptocurrency leaders. Bitcoin is the currency of the Internet. A distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, bitcoins are issued and managed without the need for any central authority whatsoever. Learn more about Bitcoin, Bitcoin Cash, cryptocurrency, and more.
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Bitcoin in Greece - Μπίτκοϊν στην Ελλάδα

A Greek Bitcoin subreddit: Stuff about Bitcoin in Greece and/or of Greek Bitcoin interest. Σύνδεσμοι και κουβέντα για το Μπίτκοϊν στην Ελλάδα και/ή θέματα Ελληνικού Μπίτκοϊν ενδιφέροντος. Bitcoin Ελλάδα.
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Primecoin

Discussion about Primecoin and its infra. Primecoin is a very innovative cryptocurrency, being the 1st non Hash-Cash PoW crypto, naturally scarce (not artificially), with very fast confirmations (1min), elastic readjusting reward & a useful mining (byproducts are primes). Primecoin is sustainable (miners are guaranteed to have revenues), and decentralized (ASIC/FPGA are not particularly advantaged). Sidechain for decentralized data applications (e.g. Storj) currently in development.
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It's a hassle but... Writing "Satoshi Nakamoto Bitcoin's creator" instead of just "Satoshi" will help stop the bad guys from teaching Google that Adam=HashCash=Bitcoin=Creator

SEO 201
submitted by IronVape to btc [link] [comments]

Resquet to Adam Black to explain his twiter profile description: "inventor of hashcash (bitcoin is hashcash extended with inflation control)"

Hi,
Adam, I would like to ask you to explain your twiter description:
"cryptographer, privacy enhancing tech, ecash, inventor of hashcash (bitcoin is hashcash extended with inflation control)"
This comment is misleading and suggest you invested bitcoin and hashcash would be some kind of currency.
Hashcash is a anti-SPAM system, not a currency. It doesn't even have an unit of account of account, how could adding inflation control to it make any sense?
Please can you clarify on your reasoning on that, has it seem to mislead many peoples?
Thanks adam3us
submitted by Ant-n to btc [link] [comments]

hashcash\Bitcoin page : 'Note hashcash is just the mining function used by bitcoin.' - adam 'snake' back twitter profile : 'inventor of hashcash (bitcoin is hashcash extended with inflation control)'

submitted by realistbtc to btc [link] [comments]

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin without inflation control was a dumb idea

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin without inflation control was a dumb idea submitted by 1Hyena to btc [link] [comments]

Resquet to Adam Black to explain his twiter profile description: "inventor of hashcash (bitcoin is hashcash extended with inflation control)" /r/btc

Resquet to Adam Black to explain his twiter profile description: submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin with inflation control was a dumb idea /r/btc

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin with inflation control was a dumb idea /btc submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin without inflation control was a dumb idea /r/btc

Adam Bear has set his Twitter desc to inventor hashcash (used in Bitcoin mining), he finally admits that calling hashcash Bitcoin without inflation control was a dumb idea /btc submitted by BitcoinAllBot to BitcoinAll [link] [comments]

It's a hassle but... Writing "Satoshi Nakamoto Bitcoin's creator" instead of just "Satoshi" will help stop the bad guys from teaching Google that Adam=HashCash=Bitcoin=Creator /r/btc

It's a hassle but... Writing submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Anyone else uses the twitter profile of Adam Back to boost blood pressure in the mornings?

I just browse to twitter.com/adam3us and booom...no coffee is needed to start my day.
On better days reading
inventor of hashcash (bitcoin is hashcash extended with inflation control)
is enough.to kickstart my day.
Thank you adam3us
You are a precious asset for the bitcoin community
submitted by MeTheImaginaryWizard to btc [link] [comments]

03-24 20:16 - 'HashCash for Corona - Kryptografen.com' (kryptografen.com) by /u/Kryptografen_no removed from /r/Bitcoin within 252-262min

HashCash for Corona - Kryptografen.com
Go1dfish undelete link
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Author: Kryptografen_no
submitted by removalbot to removalbot [link] [comments]

Adam Back was involved in the Cypherpunk movement and now talks to the CEO of r/vaultoro about the history of Hashcash, which was an important contribution for the implementation of Bitcoin.

Adam Back was involved in the Cypherpunk movement and now talks to the CEO of vaultoro about the history of Hashcash, which was an important contribution for the implementation of Bitcoin. submitted by janberlin92 to Bitcoin [link] [comments]

In 1997, Adam Back invented „hashcash“, a solution to combat the increasing amount of spam mails. This turned out to be one of the essential building blocks (pun intended) of Bitcoin

In 1997, Adam Back invented „hashcash“, a solution to combat the increasing amount of spam mails. This turned out to be one of the essential building blocks (pun intended) of Bitcoin submitted by TillAntonio to Bitcoin [link] [comments]

Reminder: Adam Back's "hashcash" is NOT Bitcoin Proof-of-Work

From the white paper:
To implement a distributed timestamp server on a peer-to-peer basis, we will need to use a proof-of-work system similar to Adam Back's Hashcash
Emphasis is mine
Satoshi used Back's concept for Proof-of-Work, but not his actual implementation and parameters.
Bitcoin Proof-of-Work:
The proof-of-work involves scanning for a value that when hashed, such as with SHA-256, the hash begins with a number of zero bits.
On the other hand, Back's hashcash:
The sender prepares a header and appends a counter value initialized to a random number. It then computes the 160-bit SHA-1 hash of the header. If the first 20 bits (i.e. the 5 most significant hex digits) of the hash are all zeros, then this is an acceptable header.
They aren't even using the same hashing algorithm. Similar method, but not identical.
More from the Wikipedia page:
While hashcash uses the SHA-1 hash and requires the first 20 of 160 hash bits to be zero, bitcoin's proof of work uses two successive SHA-256 hashes and originally required at least the first 32 of 256 hash bits to be zero.
The fact Back claims on his Twitter bio that his hashcash is used in Bitcoin Proof-of-Work is fraudulent
As of the time of this post, Back's Twitter profile reads as:
cypherpunk, cryptographer, privacy/ecash, inventor hashcash (used in Bitcoin mining) PhD Comp Sci adam3.us Co-FoundeCEO blockstream.com
That is all. Was reading the whitepaper and wanted to make this point publicly. I'm sure it has been made many a-time in the past, but reiteration never hurts.
Carry on, Bitcoiners.
submitted by maff1989 to btc [link] [comments]

"Shortly before publishing the Bitcoin white paper, Hashcash inventor Dr. Adam Back directed Satoshi Nakamoto to Dai’s work, making Dai one of few people Bitcoin’s inventor personally reached out to before publishing his white paper."

submitted by xdrpx to Bitcoin [link] [comments]

why does Adam Back keep on referring to bitcoin as "hashcash"? Stop trying to make "hashcash" happen, it ain't gonna happen!

why does Adam Back keep on referring to bitcoin as submitted by UnfilteredGuy to btc [link] [comments]

"'Bitcoin is Hashcash extended with inflation control.' ...[is] sort of like saying, 'a Tesla is just a battery on wheels.'" -- Blockstream's Adam Back #R3KT by Princeton researchers in new Bitcoin book

submitted by crackthecore to btc [link] [comments]

Bitcoin UASF Showed Users Are In Control via 'Market Forces,' Says HashCash Inventor, Adam Back

Bitcoin UASF Showed Users Are In Control via 'Market Forces,' Says HashCash Inventor, Adam Back submitted by Suberg to Bitcoin [link] [comments]

02-21 16:33 - 'Valuation Of HCX Is Heading For An Upswing As HashCash Consultants Takes Up New Projects' (cryptoninjas.net) by /u/Hashcashconsultants removed from /r/Bitcoin within 123-133min

Valuation Of HCX Is Heading For An Upswing As HashCash Consultants Takes Up New Projects
Go1dfish undelete link
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Author: Hashcashconsultants
submitted by removalbot to removalbot [link] [comments]

The REAL problem with bitcoin today is that we went from Satoshi, who believed the WORLD! could be changed to someone who claims to have proven that impossible (Greg Maxwell) and another who just invented HashCash (Adam "What the feck is hashcash?" Back)

The latter of which is also willing to trade principles for situations that benefit them short term. (Long term/Clear as day Censorship)
Who waste investor cash on renting satellites that claimed to bring bitcoin to the unbanked... and only meant it literally.
Shame on blockstream, shame on core, shame on bitcoin, shame on bitcoin.org, shame on bitcointalk.org
submitted by SouperNerd to btc [link] [comments]

‘Bitcoin Time’ Moving Faster Than ‘Internet Time,’ Says Hashcash Inventor Adam Back

‘Bitcoin Time’ Moving Faster Than ‘Internet Time,’ Says Hashcash Inventor Adam Back submitted by Ranzware to BitNewsLive [link] [comments]

Adam Back: "21 takes us full circle from Hashcash to Bitcoin antispam"

Adam Back: submitted by wegotothem00n to Bitcoin [link] [comments]

Wei Dai's b-money idea had a lot more Bitcoin elements than hashcash did. Note: he's not trying to take credit for inventing Bitcoin.

submitted by jonald_fyookball to btc [link] [comments]

Adam Back's Hashcash Readthrough Part 1 Hashcash What is Bitcoin  Block chain  Hashcash  Proof of work ... Tutorial of Paybito Basic HashCash Consultants Blockchain Basics Explained - Hashes with Mining and ...

Hashcash. A core building block of the Bitcoin protocol is the Hashcash concept. Bitcoin uses Hashcash to provide security from malicious alterations of the Blockchain, by imposing a cost for alteration that a miner must hope to recoup through rewards given for cooperation. To start BTCManager’s ‘History of Bitcoin’ series, we will look at the proof-of-work algorithm Hashcash.This algorithm was used as the basis upon which a number of cryptocurrencies, most notably bitcoin, create their mining protocols.. The Origin of Hashcash. In 1992, researchers Cynthia Dwork and Moni Naor presented their paper titled: “Pricing via Processing or Combatting Junk Mail ... HashCash has just recently launched a first-of-its-kind white label payment platform that is based on Bitcoin currency. The new ecommerce payment option will help merchants receive Bitcoin as payment. The blockchain technology company disclosed this on Thursday at an event that introduced a white label payment key that will integrate Bitcoin as the main cryptocurrency for payments. Hashcash. Bitcoin uses the hashcash Proof_of_work function as the mining core. All bitcoin miners whether CPU, GPU, FPGA or ASICs are expending their effort creating hashcash proofs-of-work which act as a vote in the blockchain evolution and validate the blockchain transaction log. Decentralization: hashcash-Scrypt vs hashcash-SHA256; Bitcoin uses the hashcash Proof of Work function as the Bitcoin mining core. All bitcoin miners whether CPU, GPU, FPGA or ASICs are expending their effort creating hashcash proofs-of-work which act as a vote in the blockchain evolution and validate the blockchain transaction log.

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Adam Back's Hashcash Readthrough Part 1

A brief and simple introduction to the hash function and how blockchain solutions use it for proof of work (mining) and data integrity (Merkle Trees). Hashcash is a proof-of-work system used to limit email spam and denial-of-service attacks, and more recently has become known for its use in bitcoin as part of the mining algorithm. How to Prepare for the Future and Avoid Being Caught the Crash - Robert Kiyosaki & George Gammon - Duration: 42:38. The Rich Dad Channel 154,692 views. New Bitcoin and other cryptocurrencies sprang into limelight when reports of people earning crores of rupees emerged. Bitcoin also has had its fair share of crit... Paybito Basic is a bitcoin and cryptocurrency exchange trading platform for Bitcoin, HCX and Bitcoin Cash. The platform supports buy and sell of cryptocurrency for beginners.

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