Most of those Altcoin bounties won't even get you $10, simple because the tokens are worthless, low trading volume, no realiable exchanges, and so on.

The risk of getting tagged, wasting your time, and risking documents in kyc (for bounties and exchanges) is simple not worth.

Everytime someone talks about transactions per second in a centralized cryptocurrency, ask yourself:"why don't I use visa?"

Visa can do a lot more than that
Bitcoin is not meant to be only fast, but decentralized , cheap and borderless.

Great idea.
I believe you should really move it to glambing doscussion board.

Stable coins are really interesting to gamble. They are like a USD, where you need no kyc, no taxes, etc. Great for privacy and low bureaucracy

If depends on your personal financial situation and where you live.

There are places in the world, such as Venezuela, where you can live one motnh with 25 USD.

If you live in a rich country, I doubt you should take kyc

It was also mentioned in another Netflix series, casa del papel.
It was also used by criminal activities.

Just remembered another on, on the series billions. It was used to avoid taxes.

However, even though it's used as a money for criminals it's good to see it on TV shows. Cryptocurrencies need more visibility. Soon we will see people using Bitcoin legally in movies.

Acredito que o aumento dos Full nodes contribui sim para a segurança na rede.

O aumento de Full nodes aumenta a descentralização no processo de validação de transações. Quanto mais nodes validando e disseminando transações no mempool, melhor será a segurança no caso de um ataque.

Suponhamos que uma grande parte dos nodes estivesse, por exemplo, concentrada em uma localização geográfica , como a China. Se a China proibisse de alguma maneira a operação desses nodes a rede sofreria muito.

Ok thank k you for your correction about segwit. You are right, it does not reduce transaction size, just made a small research about it now.

I don't think you can buy cryptocurrency using Fiat without kyc.

The most reliable out there for your case are kraken cex.io and bitstamp, in my opinion.

You will just need a driver's license and a document about your residence. Your account will be verified fast nowadays..

Segwit somehow solves blocksize problems, by reducing transaction size. So more transactions can go in a block with the same size.

Additionally it also adds new features which will allow lightning network.

I think there is no need.

It's possible to implement smartcontracts and some others ethereum capabilities to bitcoin
Not all of ethereum capabilities, but the most important ones.

Was it generated on Electrum?

Electrum uses a different encoding and does not use bip39.

Try to recover it on Electrum, you may be successful.

Ledger is really not fully open source.

However it's an old wallet, and one of th safestest options out there.

Coinomi is not open source also.

 
Not all 12 words combinations are valid. In fact, I believe most of them are not.

You can test by yourself at iancoleman.io/bip39

If you write "word" 12x it is a  valid combination, but most of words are not.

So probably the op misplaced some words. Ledger nano won't even accept an invalid word.

I would try to change the order of your 12 words. Maybe you wrote something like:
Word dog house
Raccoon car dog
...

But the correct order is word raccoon dog car house dog (from top to bottom, or something like that)

As long as you have your seed (12 words) you are safe, just Loycev said.

Just download a new software in electrum.org
And recover your wallet using the seed you have.

As others said, you need to rank up first

For that, you need to earn some merits.
To earn merits you need to make high quality posts. If someone likes them, they can give you merits.

When you receive merits you will rank up to jr member and will some a simple signature

As the address was previously generated, the seller must have the privatekey.

Keep in touch with him and contact his support. Unless you sent it to the wrong address, the seller has control over the funds.

Bitstamp is the oldest exchange still online, as far as I know

I used it a lot. It's my favorite exchange.

If you are in the USA coinbase is better probably

Maybe the guy is honest and truly wants to donate some BTC to you.

In this case, just download Electrum from electrum.org

Create a new wallet and click receive . You will see a receiving address. Just give this address to him and ask him to donate in this address. If this is not a scam, he will transfer the coins to your new address.

Your post is in the wrong board.

Please post in your local board, as this is a English only board.

Joseph Poon e Thaddeus Dryja fizeram o white paper em 2016.
https://lightning.network/lightning-network-paper.pdf

Joseph poon também foi o criador do Plasma, o equivalente da lightning Network na plataforma ethereum.