BlockchainMaroc

la blockchain au maroc. blockchain in morocco #Bitcoin #Etherum #Ripple #blockchain

[Nick Szabo @NickSzabo4]

Great thread about how much EOS depends on a naively drafted "constitution", human-interpreted wet code. As a result EOS will be labor-intensive, permissioned, jurisdictionally biased, and will have poor social scalability. https://t.co/64XzgplMsb

[Spiros Margaris @SpirosMargaris]

Flat-pack heaven?

#Robots master task of assembling Ikea chair

https://t.co/SbOXfe4mBy #fintech #insurtech #AI #ArtificialIntelligence #MachineLearning #deeplearning @guardian @iansample @ipfconline1 @jblefevre60 @chboursin

[Visual Capitalist @VisualCap]

Infographic: The Future of Crypto Payments in the Retail Market https://t.co/tKHuuBTrMU

[Jameson Lopp @lopp]

Contrary to my expectation, I've found that time flies when you're suspended in a sensory deprivation tank.

[Auryn @auryn_macmillan]

The office for the day!

[Jaxx Liberty @jaxx_io]

COO of @Viberate_com: "We're also proudly integrated into Jaxx. Which in my opinion is the best wallet in the world right now." Full interview with @financemagnates on YouTube: https://t.co/hVTM4MKZnh.

[Alistair Milne @alistairmilne]

Did someone not ban Bitcoin again?

[Spiros Margaris @SpirosMargaris]

Insightful report

Quarterly #InsurTech Briefing Q4 2017 by #WillisTowerWatson

https://t.co/coUmpAeMyB #fintech @WTWcorporate @guzmand @andi_staub @MikeQuindazzi @sbmeunier @robgalb @albertogaruccio @stratorob @ishnae @NickMart_Insure @antgrasso @SabineVdL @Fisher85M @JimMarous

[Fabian Vogelsteller @feindura]

Whoever has an ethereum full node running, please run light client servers.
$ geth --lightserv 50
Please 😙

[BlockchainMaroc @BlockchainMaroc]

@TokenChain @KuCoinHodl @CharlieShrem Reached already

[Peter Todd @peterktodd]

The best you can do with a mined sidechain is also reactive security: publish evidence on the main chain that the miners mining the sidechain had double-spent. Like Lightning, that's reactive security, and a majority of miners can censor that evidence and thus steal funds.

[Peter Todd @peterktodd]

Mined sidechains are _always_ insecure for the same reason Lightning _can_ be insecure: while Lightning requires both the node and majority of miners to collude, funds on mined sidechains can always be stolen by a hashing power majority (and often by much less than a majority).

[Peter Todd @peterktodd]

Bitcoin PoW is passively secure: after n confirmations, double-spending your coins requires the destruction of n blocks worth of energy, *regardless* of whether or not you take any actions. But it doesn't scale.

Lightning traded passive security for active security to scale.

[Peter Todd @peterktodd]

By comparison to Lightning's reactive security, client-side validation can be passively secure, preventing theft 100% of the time while also scaling: https://t.co/JEVxCps2FY

Different set of tradeoffs: trustless with respect to theft/validity, trusted with respect to censorship.

[Peter Todd @peterktodd]

In Teechan, you literally gave your private keys to the other party! Emin appears to have done this to avoid segwit or previous payment channel tech, which he then lied by claiming it didn't exist.

[Peter Todd @peterktodd]

An obvious thing to do is use SGX: have very long duration refund txs outside the enclave, with shorter durations stored within the enclave.

Unlike Teechan, this doesn't give the enclave the ability to directly steal funds, but does protect against miner-colluding theft.

[Peter Todd @peterktodd]

Like it or not, an effective way to combat the risk of a majority of miners stealing funds from Lightning channels is to use semi-trusted Lightning nodes, that we know aren't colluding with miners.

We already trust Lightning nodes for privacy, so this isn't entirely novel.

[Peter Todd @peterktodd]

In most circumstances Lightning punishments have a high probability of success.

But not all: a majority of miners _can_ censor Lightning punishment transactions, and thus steal funds. We should not underestimate that risk.

[Peter Todd @peterktodd]

"A Lightning node cannot lose or run away with a user’s money."

That's just not true. Lightning is based on reactive security, where an attempt at taking a user's money is thwarted by a response. That response _can_ fail, and thus @coincenter's argument is invalid. https://t.co/bvaVncXMs0

[Izabella Kaminska @izakaminska]

Bitcoin conference stops accepting bitcoin for tickets because turns out bitcoin is a rubbish payment system. https://t.co/K09K9IE0oy