I see many people saying"a solution to pow" as if pow was a problem and pos was a solution to every problem.
The actual problem with PoW is the used energy. With the rising average temperature and the media comparing BTC's energy usage to countries like denmark, a 'solution' would be handy. Wether PoS can (safely and securely) replace PoW is neither proved nor disproved. It may but also may not be the 'solution'. But if the hashrate (with more miner) and the energy consumption is going to rise further, governments will start cracking down on mining (like already happened in several countries). I think this is hypocrisy, as Christmas lights consume as much energy. http://www.coindaily.co/2017/12/14/christmas-decorations-consume-as-much-electricity-as-bitcoin-mining/And how much energy does the whole banking system consumes? Hi much does visa consumes? Nobody knows exactly, while btc mining is easy to point out , as someone who does not understand what bitcoin is mining is just a waste of energy to create some nerd money in a computer. |
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Maybe we should start asking donations?)
You can try but I think you will not get them here... You can mine those btc again. nd store them on multiple wallets. I think this is the best option. |
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Nobody knows when ethereum Casper (pos) will be released. And Casper is not 100% proof of stake, as most blocks will still be pow in the beginning. I see many people saying"a solution to pow" as if pow was a problem and pos was a solution to every problem. Pls still needs to be tested in a great scale blockchain like ethereum. Until then we don't know what to really expect. |
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So there has been a lot of hype about bitcoin lately and I know it is revolutionary and has lots of advantages. But let's try to state the reasons why exactly do you personally think that bitcoin is not great and lacks in some points. I know it has great applications and is just great but it is not falwless right?
My question is simple and straight, What are the flaws of bitcoin?
Except its high volatility and "Dark use" (in illegal activities).
Mining Centralization is a flaw now, in my opinion. I think that in general everyone should have at least a small of their investment portfolio in bitcoin. Something like 0,5 - 5% i think is a very health for every portfolio. Bitcoin has a risk totally disassociated to other investments, such as gold, stocks, bonds. In the right percentage, bitcoin could even lower the risk of your portfolio. One important thing is to never over-invest. When you put more than you can afford to lose, most people become paranoid and make bad trading decisions. |
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NOTE: before you get tooooo paranoid, these attacks all require that the cold storage device is compromised.
I think this is the most important thing about cold storage, hardwallets, etc. People buy hardwallets a little cheaper from third party seller, compromising security. |
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I am not a hacker and I don't know anything about Apple products.
But there are a few weak points on your iPhone:
-Apple has synchronization stuff.
-Your personal phone is online100% of the time and your seed was not even encrypted.
-You may have been exposed to phishing sites on WhatsApp/telegram groups, emails (I know that's unlikely,but your personal phone is more exposed to that than other devices).
Storing seed on a piece of paper is 100% anti hack, unless he has physical access to the paper.
Think like this.
Every time you write your seed (or scan photo etc) on a device with internet connection it is considered exposed and you should transfer your funds immediately. Your seed was online 100% of the time (not matter that it was locally on device, because the device was online).
It's very sad what happened to you. I would be devastated. But don't let this move you away from this technology. Use this opportunity to learn. You will make that money again.
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Blockchain.info has the 12 word seed. The user owns the private keys and the seed. I think it's a good wallet, considering it's a online wallet....
Probably someone got access to his seed. As he uses 2FA, it's very unlikely the site had been hacked
That's because of people like you, I have formed the view that online wallet blockchain.info it is safe and convenient. Therefore, a hardware wallet was purchased and lying on a shelf in the closet, and I used the service blockchain.info. You all know the result... Stolen coins. Now you are blaming me for your mistakes. You first started to blame blockchain.info, now that it is clearly not their fault, you are blaming me for your disregard of basic security rules. I asked a few times but he didn't answer how he stored his seed...
I long time could not find the seed. I wrote about it in this tread. Now found, the seed was stored in several photos on my iPhone 7 . That's the wrong way to store your seed. That's how the hacker got access to it and stole your coins. Even if you had a hardware wallet you would have been hacked. Even if you had a paper wallet you would have been hacked. Even if you had a bitcoin core wallet on an airgapped pc you would have been hacked. That was not blockchain.info fault, as it is the most popular wallet out there.When you click on the Seed on blockchain.info they tell many times to write it on paper. Learn from the experience, store your hardware wallet seed on a piece of paper or an offline environment. |
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Nice summary. Just A small correction.
The equation in pow is just an attempt to find a hash that is a number smaller than x. When someone finds a hash that solves the equation a new block is created and that miner is rewarded
There are no miners in pos, they are called validators.
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I am fairly new to crypto...as I analyze many of the alt coins, I find a lot of them say the same thing...making transactions faster, getting point of sale in place, making crypto mainstream...etc. A lot of it sounds like spin. In the end, do you think there is going to be room for more than one coin? And if so, what would the scenario be?
There are soooo many GENIUS ideas attached to coins and tokens...eliminating the middleman, decentralizing money, global computers and clouds...just endless...but many of them seem more like companies we are investing in rather than coins that we could use for real world consumerism.
There are many kinds of "coins". And I think there is room for many coins. There are those payment only coins, like BTC and all his little clones: LTC, Btrash.... There are Protocol Tokens, like Ethereum, Neo, Icon, Waves... They allow utility tokens to run on their blockchain. Utility Tokens in my opinion are the riskier, as they are like double risk. If the protocols fails,the utility fails too. Utility tokens examples are OmiseGO, Chainlink, Golem, 0x.... There are privacy coins like Monero, Dash, PIVX, Particl.... |
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I have littel bit Bitcoin in market exchange and I don't know where I must save it, I am try use wallet Bitcoin in https://bitcoin.org but need 1 week for sincronisasi & I am try https://blockchain.info but wallet address always change so any good idea for me? Hello, THe best option is to buy a ledger nano S. But until it arrives, you have two options: Desktop or mobile wallet. Do you have a safe computer? Do you go to shady websites to download illegal stuff? If you don't, I will suggest https://electrum.org/#downloadIf your computer is not 100% safe, I think mobile wallets are a good choice. I like Coinomi Android Wallet. Full Segwit. http://coinomi.com/ |
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 Nós da rede é uma coisa, a forma da prova de trabalho é outra totalmente diferente, o que é necessário é que uma rede tenha diversos nós onde cada uma servirá como ponto de legitimidade da rede, neste caso o POS (prof of stake) já serve, o que não precisa é da forma como é feita a mineração no POW (proof of work). Cada coisa é uma coisa, uma blockchain pode funcionar sem a necessidade da larga escala de consumo de energia do POW, e ainda assim não será necessário ficar na mão dos políticos e tal. Oi Arthur, O bitcoin não gasta energia pq é uma tecnologia ultrapassada ou porque ninguem ta nem ai pro meio ambiente. É a única forma comprovadamente (testada mil vezes) segura de proteger a rede contra qualquer ataque, inclusive um ataque de escala continental. Quando vemos notícias de que o BTC consome a energia de X países combinados, isso quer dizer que precisa X países combinados para tentar fazer um 51% na rede do bitcoin. O nível de segurança que uma moeda global precisa é exatamente esse. PoS nunca foi testado (ah não ser em moedinhas centralizadas e fuleiras de pequeno volume). O primeiro teste do PoS será com o Ethereum, e será aos poucos, como expliquei aqui https://bitcointalk.org/index.php?topic=3359532.0;topicseen (recomendo que voce de uma lida) PoS é muito bacana mas o Bitcoin nunca irá tentar algo assim, pois a proposta do bitcoin é 100% segurança, uma moeda global. O nível de segurança precisa ser maior do que o do Ethereum, e é. A segurança que o PoW tem contra censura, regulação, etc é muito maior do que o do PoS. No PoS você identifica os maiores investidores e pode persuadi-los. No PoW é mais complexo isso, porque sempre podemos ter a entrada de novos atores (basta um computador pra minerar), a rede de mineração é muito mais anônima do que a de investidores, etc... |
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It's blockchain.info, it's non-seeded so he doesn't have the 12 words.
If your funds actually exited your wallet there is nothing you can do, I assume that there is nothing to do with blockchain.info operators and it's probably your wallet/computer has been compromised.
It's a lesson to learn- next time if you store funds that you can't afford losing then do it on a hardware wallet offline, so you won't risk losing your funds due to lack of security.
Blockchain.info has the 12 word seed. The user owns the private keys and the seed. I think it's a good wallet, considering it's a online wallet.... Probably someone got access to his seed. As he uses 2FA, it's very unlikely the site had been hacked. I asked a few times but he didn't answer how he stored his seed... |
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Yeah, it's tough to "be your own bank" when your funds are physically in the custody of someone else. But every storage medium has its tradeoffs. It just depends what the biggest threats are.
A friend of a friend had his house burglarized and his safe stolen -- everything gone. Probably a targeted/inside job. Anyway, in hindsight, I guess he'd have been better off with a safe deposit box. I think the moral of that story is don't put all your eggs in one basket. You should never store everything in one place.
Maybe if his privatekeys were inside a drawer, they would not have been stolen. They would look worthless. Or splitting privatekey/seed in two separate pieces of paper maybe a good idea also. |
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Perfeita resposta.
O nome desse último mecanismo dé segurança : hardened derivation.
Foi uma das partes que mais gostei até agora do mastering bitcoin.
Eu acho que tenho que começar a pegar esses livros aí pra ler, eu estou aprendendo tudo pelo whitepaper e pelo developer guida do site do bitcoin, o bom é que não omitem nenhuma informação, o problema é queinformação complexa demais e tenho que pesquisar toda hora esse termos em outros lugares. Demorou cara. Antonopoulos é outro esquema. Vai aprender muito mais fácil e rápido com ele (nesse começo) O livro é open source, mas comprei o físico na Amazon. https://github.com/bitcoinbook/bitcoinbook/releases/tag/second_edition_print2 |
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I don't think theme will change anytime soon.
I like the current theme, but it hurts my eyes at night. So I am using f.lux , a good program that reduces de blues light and increases the red light. Pretty good to sleep.
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O conceito de extended public key é um pouco mais complexo do que parece. Basicamente ele seria uma das public key da wallet/seed onde você pode usar para gerar todos os proximos extended public keys que vão gerar os endereços para receber os pagamento (o mais alto é o master extended public key), ou seja, ela seria boa para criar uma wallet watching-only, já que ele não te da o controle sobre nenhuma private key e você nao iria precisar pegar os endereços um por um.
O problema nisso é se o atacante sabe a sua extended public key ele saberá de todos os proximos endereços que você vai usar no futuro, não vai ameaçar a perda de valores, mas sim a perda da privacidade que você teria trocando de endereços.
Pra isso, inventaram de colocar um negócio de chain code que serve pra se usar em conjunto com a extended public key e a extended private key para gerar os novos endereços, não vou entrar em muitos detalhes aqui já que existem muitas variações para proteger contra esse problema.
Perfeita resposta. O nome desse último mecanismo dé segurança : hardened derivation. Foi uma das partes que mais gostei até agora do mastering bitcoin. |
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Mas mesmo assim, isso não tira o fato de que a mineração de bitcoins seja algo ligeiramente "inútil", os asics passam 24h por dia tentando produzir hashs que começam com alguns zeros... Não seria mais útil/legal usar toda esse poder computacional para calculos mais interessantes na área da ciência, calculando novos primos, simulaçoes meteorológicas ou qualquer coisa do tipo ?
Como vi o Antonopoulos falar no vídeo que mencionei acima, é muito fácil criticar o consumo do bitcoin pq ele é muito obvio. . Quanto de energia custa o sistema bancário? Quanto de energia consome a rede visa? Alguém tem esses dados de fato? Decorações de natal consomem a mesma energia elétrica que o bitcoin. http://www.coindaily.co/2017/12/14/christmas-decorations-consume-as-much-electricity-as-bitcoin-mining/ |
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