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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Market is recovering, but many altcoins are not. It's possible that some of them never will.
Few altcoins have survived the long term.
That's why it's important to make a long term portfolio with the market leaders, mostly bitcoin and ethereum. I don't like ripple but it's a good choice for long term too.
As you are going down the coinmarketcap the risk is higher. That's why people who invest (and even overinvestment sometimes) in those coins and get worried.
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Pessoal pesquisem mais a extended public key . Ainda não teve resposta certa. 5min de Google aí.
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It seems to me, that blockchain could help developing countries, but instead of it India forbids bitcoin  That's the exactly problem with developing countries. Solutions are banned, government controls everything. There's a legion of idiots and paid idiots that supports every government decision. Look at Brazilian central bank president. And there's a bunch of people who supports him. https://cointelegraph.com/news/brazilian-central-bank-president-says-bitcoin-is-pyramid-scheme |
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Hello sir, please take a look at my profile. I am low rank but I have 139 earned merits.
Btctalk name: bitmover
Rank: Member
Current post count: 482
BTC Address: 3JKX8dcFaPKZ5iQAmRp5D2PVjPUHSWVP6r
Wear appropriate signature: Yes
Wear avatar: N/A
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Sorry if this is a very dumb question, but can you help me understand the "longest chain" is the valid chain concept? This is something I'm confused about when it comes to bcash, as it is currently the longer chain. Is it because these are two separate coins at this point? Or does the "Longest chain" refer to mined blocks that become orphaned?
Bcash is another coin, no matter how long that chain is. It has nothing to do with bitcoin. |
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Tinha passado batido esse tutorial por mim.
Muito obrigado pela contribuição.
Me resta saber se eu tinha, na epoca dos forks, algo que valha expor minha seed, mover os fundos e criar outra carteira.
Eu nao lembro kkkkk
Coloca seus endereço aqui nesse site https://btcdiv.com, que ele vai mostrar quais os saldos que você tem em cada endereço. Infelizmente tem que colocar um por um... Editei o post principal com essa informação. |
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Its so funny to see how people changes their minds so easily... when BTX went form 5 to 30 USD, people were expecting to see hundreds in few months.... Than the price dropped and everyone was like noo, its gonna be 1 dollar, we are screwed... and now, we see the price growing again and everyone has their minds in the clouds again. Seeing for sure those thousands of dollars prices and lambos all over the place...
Buy high sell low mentallity. If you believe the project, just hodl and you will never lose. Don't get overinvested, so you won't get worried. |
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Lol, people would be mining merit instead of making good posts.
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Misconception #8. Bitcoin is free. Wrong
Bitcoin is not free. As other currencies bitcoin is " Crypto Currency " but it is not free. Yes you can get it by many means some famous are (faucets, mining, etc). But its not free you are investing your money and time on Machine , internet and work which you provides to get.
I saw this picture recently. Cost to mine 1 bitcoin is pretty high around the world, with very few exceptions.  |
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I thought that when I added a board to watch board, it was automatically added to the watchlist. Isn't this what happens?
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Hello,
I have been seen too many useless posts on most boards I follow. I wanna ask you guys which boards do you follow, maybe I am missing some good one.
I follow now:
Bitcoin Discussion (ID 1)
Bitcoin Technical Support (ID 4)
Development & Technical Discussion (ID 6)
Economics (ID 7)
Meta (ID 24)
Beginners & Help (ID 39)
Speculation (ID 57)
Português (Portuguese) (ID 29) (My local)
Thank you!
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O gráfico começa em 1000% pq se existem 10 BTC no mundo no primeiro dia, dia seguinte tem 20. Tivemos 100% de inflação em 1 dia.se existem 10 BTC e 1 ano depois temos 100 , 1000%...
Agora entendi sua dúvida. Pq se a recompensa é fixa o gráfico varia?
Por mais que a recompensa do bloco não varie diariamente, o tempo para minerar o bloco varia sempre.
A dificuldade é ajustada para que com a atual capacidade de processamento o nonce seja encontrado em 10 minutos, estatisticamente. Mas não existe um nonce que cai do céu em 10min.
Se um minerador der sorte pode minerar o bloco em 1 segundo, ou o bloco pode demorar 15 min se todo mundo estiver azarado. Por isso temos essas variações. E esta bastante estável a linha no final mesmo, com a recompensa fixa
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