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December 02, 2015, 03:20:44 AM *
News: Latest stable version of Bitcoin Core: 0.11.2 [Torrent]
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1  Local / Italiano (Italian) / Re: Minecraft - Faucet/PVP - Integrazione Bitcoin on: October 28, 2015, 02:25:08 PM
Bellissima iniziativa, complimenti!

Sperimenterei volentieri, ma ho solo la versione crackata Tongue
2  Bitcoin / Press / Re: [2015-09-26]NewsBTC - Ten Great Books on Bitcoin on: September 26, 2015, 04:15:58 PM
I just finished to read "Bitcoin: The Future of Money?" by Dominic Frisby and it became my favourite.

It's not technical, and very apt for a general public.

Not only Dominic is a great writer, but he has a profound knowledge of (Austrian) economics, very entertaining book.
3  Bitcoin / Press / Re: [2015-08-27] Does XT make Mike and Gavin dictators? on: August 28, 2015, 10:13:50 PM
If this is just ONE thing that is slipped under the radar, who the hell else knows what is on the horizon for "Bitcoin Vista". (Or, in light of all the privacy abuse, "Bitcoin 10").
If you are worried about the added things in XT you can just run plain core with bigger blocks:

Here is a version of BitcoinXT Only-BigBlocks branch, with user agent string of /Satoshi + BIP101:0.11.0/

Added two commits to update the version and copyright string:

Download Linux Binaries here:


SHA256 of binaries:

    f25d6d2d81e69457b79d9c092d21ec196dd550480dda10ff759cd169d64cbde0 bitcoin-0.11.0-linux32.tar.gz 054efbc3eb6cdf4f2ec56e4d90c8bd2be07ed8439afcc3f419ec77dcfac5c27a bitcoin-0.11.0-linux64.tar.gz 133011d35b48eafdfd0daf1af1146e4cbc18793dab3aac25eb0f99fb75def9cb src/bitcoin-0.11.0.tar.gz 6183da8a05341741466d9da3e1b1bf4037180a90da197e5ce6e03a0837cfdc8f bitcoin-linux-0.11-res.yml

Gitian signatures and instructions on how to build:

If you compile your own build, please create a pull request with your Gitian key and signature.

4  Local / Discussioni avanzate e sviluppo / Re: Su blocchi grandi (ma anche no), propagazione e chain orfane. on: August 28, 2015, 07:11:26 PM
Per capirci, verificare un blocco e decidere dunque di propagarlo richiederebbe, a fronte di un blocco da 8mb, anche fino a 30s, così a naso, per un computer di potenza media.
Dipende dalle assunzioni che fai, in particolare mi pare che tu stia assumendo che il ricevente stia ricevendo un blocco pieno di tx che non ha mai visto prima, ma questo non è il caso tipico.

Nel caso tipico le tx sono già passate in rete in precedenza e quindi sono nella mempool dei vari nodi.
Un blocco al 99% include tx che ognuno ha già visto, e quindi già verificato. Il lavoro che resta da fare alla ricezione è solo di calcolare il merkle root e poco di più perchè le signature delle tx che include (e che sono le cose più lente da verificare) sono già state verificate potenzialmente molti minuti primi (e cachate).

Quindi il grosso del tempo è solo dovuto al trasferimento del blocco.

Ma il caso ancora più tipico è il fatto che i miner non usano (solo) la connessione alla rete bitcoin per ricevere i blocchi, ma anche il relay network, e questo ottimizza in maniera spettacolare la trasmissione di un blocco, riducendo la quantità di dati da trasmettere anche di 100/1000 volte.

Questo vuol dire che il blocco arriva in pochi decimi di secondo a chi è in ascolto sul relay network, e la validazione può essere effettuata in maniera rapidissima.
5  Bitcoin / Bitcoin Discussion / Re: Core developers: we want bigger blocks on: August 17, 2015, 10:36:21 AM
Uhm.. I support bigger blocks too. But what you are saying doesn't add up: XT has a single commiter, while Core has at least five.

XT is Core with larger blocks.

Core has 5 committers, XT 6.
+1 :-)
6  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: July 27, 2015, 06:48:27 AM

BTW, were you the same Dusty that responded in Rusty Russell's last  blog post?
Yes I am.
7  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: July 26, 2015, 06:20:45 PM
I've you conceptualize that core  dev determination of block size is central planning, then  it becomes clear why it doesn't  work.
That's exactly what Pierre Rochard demostrated whith his replies when I criticized Peter Todd during the "network stress test":

Quote from: petertoddbtc
Peter Todd ‏@petertoddbtc 7 lug

The transaction backlog is like a large crowd of orphans standing outside Sotheby's trying to buy Picasso's for spare change.
Quote from: ilporticodipinto
8  Local / Discussioni avanzate e sviluppo / Re: Gangsta, double spend con replace-by-fee on: July 11, 2015, 12:09:19 PM
Brainstorming \ FSS RBF USE CASE:

Mi sembra uno use case eccellente, ottima idea!

L'ho buttata lì, non so se ci siano problemi tecnici

Non è passeggiata l'implementazione, ma mi pare che da un punto di vista teorico stia tutto perfettamente in piedi.
9  Bitcoin / Press / Re: [2015-06-18] Metro: Could Greece take bitcoin as its official currency? on: June 21, 2015, 01:04:03 PM
Bitcoin is a currency for the people, and as such, exactly opposed to the liking of the governments.

So, no government will adopt bitcoin by his choice, ever.
10  Economy / Currency exchange / Re: Bitcoin <--> GoldMoney on: June 21, 2015, 08:57:04 AM
BitGold announces acquistion of GoldMoney
Anybody knows if this acquisition will enable to move gold between goldmoney and bitgold and/or buying/selling bitcoins for gold?
11  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: April 11, 2015, 09:26:51 PM
Do you have a link?
Pettycoin: Losing Tiny Amounts of Bitcoin At Scale! [ 2014]
Pettycoin: Towards 1.0
12  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: April 11, 2015, 08:10:08 PM
Blockstream recruiting more brainpower to work on sidechains. Impressive addition
Wow, I listened to his talk about the idea to scale bitcoin and that guy seems to really get it.

Great addiction for the blockstream team!
13  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: March 22, 2015, 04:51:10 AM
A very nice article about bitcoin and gold virtues if (when?) the dollar collapses:

When the Dollar Collapses, which is better Money, Gold or Bitcoin?
14  Bitcoin / Press / 2015-03-16 "deep web" a mainstream movie about Bitcoin,Silk Road & Ross Ulbricht on: March 16, 2015, 08:34:14 AM
Narrated by Keanu Reeves

Deep Web gives the inside story of one of the the most important and riveting digital crime sagas of the century -- the arrest of Ross William Ulbricht, the convicted 30-year-old entrepreneur accused to be 'Dread Pirate Roberts,' creator and operator of online black market Silk Road. The film explores how the brightest minds and thought leaders behind the Deep Web and Bitcoin are now caught in the crosshairs of the battle for control of a future inextricably linked to technology, with our digital rights hanging in the balance.

In addition to being the only film with exclusive access to the Ulbricht family, Deep Web features the core architects of the Deep Web; anarchistic cryptographers who developed the Deep Web’s tools for the military in the early 1990s; the dissident journalists and whistleblowers who immediately sought refuge in this seemingly secure environment; and the figures behind the rise of Silk Road, which combined the security of the Deep Web with the anonymity of cryptocurrency.

From Reddit:
I was blown away. They interview Andy Greenberg, Amir Taaki, Cody Wilson, and extensively featured the Ulbricht family. They covered the cypherpunks, mentioned austrian economics, Mises, and anarcho-capitalism multiple times. They interviewed the head of Law Enforcement Against Prohibition. They gave a very accurate and largely favorable explanation of Bitcoin.

The focus of the film was basically the history of the Silk Road, the bust, and how unfair the government's trial of Ross was.

They even mentioned OpenBazaar (I almost dropped out of my seat).

Afterwards, they brought the director Alex Winters on stage, along with Lyn Ulbricht, Cody Wilson, Andy Greenberg and a few others. They talked and had a Q&A for ~20 minutes. Obviously, it was extremely positive towards Ulbricht's position and strongly attacked the trial.

This wasn't a Bitcoin conference or a libertarian gathering, this was a major film premiere at SXSW. It was a massive theater (easily more than 500 people) and standing room only, I had to wait in line for a half hour for a ticket.

I still can't believe what I saw. Amazing. Everyone needs to see this film.
15  Local / Discussioni avanzate e sviluppo / Re: Gangsta, double spend con replace-by-fee on: March 06, 2015, 02:37:30 PM
Non mi quadra:
Example of double-SHA-256 encoding of string "hello":

2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824 (first round of sha-256)
9595c9df90075148eb06860365df33584b75bff782a510c6cd4883a419833d50 (second round of sha-256)
A me il secondo hash viene:
d7914fe546b684688bb95f4f888a92dfc680603a75f23eb823658031fff766d9 (sembra + corto ma dovrebbe avere 64 caratteri pure lui) comunque e' differente. L0ho calcolato sia con sha256sum da linea di comando che con una estensione per libre (open) office. In entrambi i casi ottengo lo stesso risultato differente da quello della pagina ...

Il secondo passaggio va fatto sui byte del primo risultato, non sulla sua rappresentazione esadecimale, che è quello che fai tu se usi sha256sum.
Come spiegato qui, se usi un tool che produce output binario potrai verificare che il risultato è corretto:

echo -n hello |openssl dgst -sha256 -binary |openssl dgst -sha256

16  Local / Discussioni avanzate e sviluppo / Re: Gangsta, double spend con replace-by-fee on: February 22, 2015, 08:42:47 PM
Complimenti Guido per il progetto e per il suo nome  Cheesy
17  Local / Italiano (Italian) / Re: [NEWS] In italiano - 2015 - Raccolta di link dei media in lingua italiana on: February 08, 2015, 05:24:11 PM
La traduzione italiana di un articolo molto interessante che parla della nascita della Federal Reserve:

Bitcoin segna l'inizio della fine di 100 anni di schiavitù

Lettura consigliatissima.

Grazie tra gli altri ad AlexRossi per l'aiuto nella traduzione.
18  Local / Mining (Italiano) / Re: Cointeler POOL per minare SCRYPT on: February 03, 2015, 01:51:50 PM
"A'hoi miners, come va? Domani PROMESSO pagheremo tutti gli arretrati e per scusarci regaleremo 1000000 Doge a chi comprerà un contratto Expert.
Siamo veramente delusi dalle accuse di scam che ci sono state rivolte, a dimostrazione della nostra lealtà vorremmo ricordare che stiamo distribuendo una carta Mastercard con la quale riusciremo ad incularvi anche gli ultimi risparmi.

Sperando sia sufficiente e abbastanza confortante vi ringraziamo per la fiducia"

19  Economy / Service Discussion / Re: cointellect on: February 03, 2015, 01:50:03 PM
It has been a nice ride, while it lasted!  Cheesy
20  Local / Mining (Italiano) / Re: Cointeler POOL per minare SCRYPT on: February 03, 2015, 11:47:17 AM
Cointellect è un ottimo esempio per capire come lavora uno schema di Ponzi.

Non solo le dinamiche dell'azienda, ma delle persone stesse che, difendendola in buona fede, permettono che possa aumentare il giro di persone truffate.
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