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The value is in the forward signed, immutable ledger written by neutral consensus. This can take a lot of form and be the backbone of many types of applications (and already is used by large firms), the current market for direct public ledgers is a mess and I don't generally agree with much of the last craze beyond the fundamentals needed to manage transfers, ownership and executions. The applications that will use these kinds of networks haven't really been built yet.
I have Excel spreadsheets at home though and you can be assured that they haven't changed if you take a hash of them.
In fact, taking cryptographic hashes and signatures of people is automatic with Adobe signature products, and is how I signed for my house mortgage. You know, things that people really don't want changing or someone doing shenanigans with. Just a click here and a send the .pdf over and... yeah, its not that hard in practice.
Signed, immutable proof of the transaction that nobody can manipulate. It also doesn't require a legion of ASICs hashing numbers until the end of time. Because your "blockchain" is vulnerable to the 51% attack if the hashrate ever declines precipitously.
That's a lot of words to say nothing. Like, you literally aren't saying anything of substance.
All of that is word salad. Blockchain is 100% redundant technology that uses obscene amounts of electricity. Why do I need a network of computers around the globe to make sure a contract and checks get signed? Why does it require a global network of computers constantly refreshing themselves and checking for inconsistencies to implement new business? If the smartest minds on Earth actually can't come up with a use case, then it's trash.
Grifters love it.
Blockchains come in many forms, the ones you are thinking of are what are called Proof of Work chains, these uses a kind of cryptographic race to secure thier data and use a TON of waste energy as a result. Def not a fan either.
The growing popularity and interest in chains is around forms of Proof Of Stake, these use other internal protocol mechanisms to secure the network and work to run the cryptographic functions as efficiently as possible. Unsurprisingly the fastest blockchains are proof of stake and power wise are similar to traditional applications in utilization.
You don't need any of these networks if you don't want to use them, fundamentally, they arent even networks, they are cryptographic messaging systems. How the data is sent and processed is incidental, you could work out a bitcoin block on pen and paper if you wanted. This concept has extended to a cryptographic tool called Zero Knowledge Proofs, these will be part of next generation identity verification systems and is a fundamental of the W3C standard around DiD, the whole point is for disconnected attestation.
Maybe this is my “too old for this shit” moment, but this all just sounds like convoluted non-sense that’s never going to go anywhere. We still have SMS and ATMs that run XP.
surprisingly small hardware is needed to sign a message. though I do agree that we are still a bit early for workable end-user use cases. People really dont care what the database or app server is, they just want it to work and raw dogging some public node is just a bit much for people, i dont blame them.
more packaged solutions are under development, these will be more like a proper application with the differences of a chain being abstracted by the provider
things like sms, what if i told you SMS would be fine with this, so would smoke signals
I think the problem I have with it is the online enthusiasm for it is acting like it’s already going to change my life yet it’s been more than a decade and no one has shown tangible and understandable utility, just marketing bs and grifting.
But we're still early lol
Yea I’ve been hearing that for a decade. Aside from missing out on bitcoin at $300, I’m still waiting. 🤷♂️
Any sources in large firms using it? I haven’t seen anything other than generic marketing talk.
I can say of the top of my head the JPM and AMEX are running internal ledgers but there are many more, IBM and Accenture co-developed a system called Hyperledger which was given to the Linux Foundation. Its a tool kit for developing and deploying ledger applications primarily targeted at internal corps.
One of the cases these are good for is an easier to manage rights and asset control systems than many products you would pay more for and with less futzing with IAM, LADP or AD.
So, if I get it, it's like torrent, except instead of you manually verifying the hash code, each computer your file passes pay automatically checks and says "yup, the file I received and transmitted is the file I was supposed to receive and transmit" ?
pretty much, think of the files like what you would see in your .git folder for a code project. they are all linked together in a history graph. so you are validating the data, its position in history along with its entire history, you also know who changed the data and what systems were responsible for writing those changes. really solid tooling for provenance and chain-of-evidence scenarios.
I see, but if I'm not mistaken, git is anterior to the blockchain. What I'm asking here is what new things the blockchain brings to the table, that preexisting protocols like Git or P2P couldn't do. Or is the blockchain just another application of the same principles (the Merkle chain, as a previous commenter was saying)? If so, what sets it appart ?