The Lightning Network’s “Justice” Mechanism – Part 2: The WatchTowers

Second Thread of JohnOnChain dedicated to the Lightning Network anti-cheat devices. The first part is available here.

Our fraudster does not budge and will refine his strategy. He knows that the time lock is limited and depends on the size of the channel. Good thing he has another channel with our victim. The time lock is 144 blocks (1 day). It is therefore sufficient for the fraudster to ensure that his victim has a major failure preventing him from reconnecting in less than 24 hours. The plan is without a hitch (he thinks).

Here is the state of the channel (this is the first):
– 445K sats on the side of the fraudster
– 554K sats on the victim’s side

loading = «lazy» width = «718» height = «154» src = «» alt = «» class = «wp-image -59794 «srcset =» 718w,×64 .jpg 300w,×149.jpg 696w «sizes =» (max-width: 718px) 100vw, 718px «/

The fraudster will make a backup of his state file (channel.db) before an opportunity opens. He makes his payment of 100K sats. New scale:
– 345 K sats on the fraudster side
– 654 K sats on the victim side.

loading = «lazy» width = «718» height = «154» src = «» alt = «» class = «wp-image -59795 «srcset =» 718w,×64 .png 300w,×149.png 696w «sizes =» (max-width: 718px) 100vw, 718px «/

The victim’s knot falls again. This time the failure is more serious and it takes at least a week to repair its node. On the side of the fraudster, he waits patiently. After a day of breakdown, he tries his luck. It will restore its state file (channel.db):

loading = «lazy» width = «718» height = «154» src = «» alt = «» class = «wp-image -59796 «srcset =» 718w,×64 .png 300w,×149.png 696w «sizes =» (max-width: 718px) 100vw, 718px «/

… and force …

10 best sites to buy Bitcoin in 2021

Finding the best sites to buy bitcoin in France can turn out to be a real obstacle course when you start … Why is it so complicated to buy cryptocurrencies? Well, to find the best crypto exchanges and thwart traps and scams, it is necessary to be patient and learn about the subject for several hours. Finally … it was the case before 🙂 Because today, the French community is working for the democratization of Bitcoin, blockchain and crypto-assets.

Based on our experience in the field of cryptocurrencies, we have prepared a top 10 best crypto exchanges and for Bitcoin in 2021. On these sites, you can buy bitcoins in CB or PayPal securely, see even free of charge for some platforms.

⚠️ Bitcoin and cryptocurrencies are highly volatile investment products. Your capital is subject to risk. Invest only what you can afford to lose and always educate yourself before investing. This site is not intended to provide investment advice.

Best platforms to buy Bitcoin in 2021

# 1. eToro – For simplicity

eToro is known for its ease of use. Indeed, it is possible buy bitcoins with your credit card or even PayPal in a few minutes. But not only that, the site also allows you to trade the 14 most famous cryptocurrencies. It is therefore possible to trade Bitcoin or Ethereum, stocks like Facebook and Tesla or even gold and oil. The eToro site is reliable and secure, no problem to declare in more than 10 years of existence. The platform is intuitive and easy to learn, just like the mobile application available on iOS and Android. You are a beginner and want to invest in digital currencies ? eToro should fully meet your expectations.

👉 Positive point, you will be able to follow and copy the best traders on the platform.

Discover Etoro »

67% of retail investor accounts lose money when trading CFDs with this provider. You have to ask yourself if you can afford to take the high risk of losing your money.

Highly volatile unregulated investment product. There is no investor protection in the EU.

# 2. Binance – The Leading Cryptocurrency Exchange

Binance is one of the world leaders in the cryptocurrency market with several tens of billions of dollars in monthly volumes. This platform dedicated to cryptocurrencies is right on target and meets the essential needs of its users: fluidity, ergonomics and analysis tools for experienced traders.

This exchange platform, more suited to connoisseurs, provides access to a catalog of about 315 crypto-currencies …