If everything that BTC does, LTC does faster and cheaper, why BTC is worth more ?

If I understand well, LTC has the same code base of BTC, but allows GPU mining, faster confirmation (every 2.5 there is a new block), cheaper transactions fees and supports all the inovations that are coming to BTC, like Atomic Swaps and Lightning Network.

So, I think that there is some arguments of why BTC doesn't adopt the same modifications in its code. Does someone know the trade-offs involved in BTC and LTC ?

Thanks. I thought that the nodes would auto connect themselves through local network.
And, as there's just one miner, this one could reduce difficulty manually or even run a modified software.

And yes, if we consider the use of SPV wallet (far most common and realistic), this attack would be impractical. But many bitcoiners consider everyone running full nodes promote decentralisation.

Could someone clarify me how BTC avoid the hypothetic scenario below ?

1. An IT technician run a miner in a simple computer in a shopping mall local network.
2. This miner obviously can't compete with the hash power of the other miners of all BTC network
3. Suppose that, in this mall, all stores accept BTC as payment
4. The technician disconnected the network from the internet, keeping just the local network
5. So, the BTC network continues working, but now there's just one miner and the rest are just full nodes (but not miner)

I imagine that the nodes wouldn't be aware of new configuration and the miner, with 100% of hashpower, could double spend.
I think the thing is much more complex and the scenario above should be silly, but I would like to know what would really happen in that situation.

Regards,

Hello,

I and a friend are trying to develop an exchange, at last to learn how it works.
At moment, we are using bitcoinjs-lib.

1) An exchange creates a wallet per user ? Or does it have a single wallet which makes all transactions ?
2) If the exchange keeps a wallet per user, how can it protect the user's private key in case  of unauthorised access in database ? Crypt and decrypt it with user's password is an option, but it implies in ask for password every transaction.

Regards,

Olá riclas,

Não conheço bem como funciona o localbitcoins ainda.
Como seria efetuada a transação ? Não tenho conta bancária em Portugal.
Minha intenção é trocar btc por euro.

Abs,

Boa tarde,

Tenho Bitcoins e gostaria de vendê-los em Euro, pois pretendo passar umas férias em Portugal.
Mas resido no Brasil e tanto o Coindesk quanto o Bitstamp exigem tanto um documento oficial quanto um comprovante de residência do país.
Sendo assim, haveria alguma maneira de alguém que resida fora da zona do Euro, vender os Bitcoins nessa moeda ?

Abs,