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• BELLAJ BADR• @badrbellaj• Github.com/bellaj

BITCOIN

Whoami

+15 talk

Blockchain specialist & technical Advisor.

+20 projectsFirst Bitcoin mined in 2011

IOT Security solution based on Blockchain/BTC.

History (Context)

In November 2008

Ecash anonymous cryptographic (DIGICASH Inc.) ‘1983-1998’

hashcash, a proof-of-work scheme for spam control

bit gold (distributed digital) Bit gold was never implemented (Nick Szabo)

E-gold ‘1996- 2007’

‘2006-2013’

2008, financial crisis : Best time for Bitcoin

Bitcoin Can Not Be Controlled; It's Unstoppable!

Bitcoin, the world’s first decentralized digital currency.

Peer to Peer (No middle authority)

“peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution.”Satoshi Nakamoto

Bitcoin began as a P2P electronic cash system

Bitcoin System Features

• Pseudo- anonymity (addresses are public but the holder remains hidden)• Secure by design (Cryptography : Cryptocurrency, hashrate)• Privacy preserving (No Sign-Up Required, etc) • Transactions are Irreversible (no chargeback)• Easy to use (Qr code, online wallet)• No intrinsic value, No physical form, No central bank

• No double-spending problem (Cheating or Counterfeiting).• No Central Authority• Low Cost transactions (depends on the size not on the amount send 10$ is like 10M$).

• Transparent blockchain.

How it works?!• Blockchain based

Miner would dedicate computer power to solving cryptographic puzzles

3.5B$ transferred.The simplest of all payment systems

FOR DEVELOPERS• Bitcoin core (C++) • Bitcoin clients or Implementations : BITCOINJ, BITCOINJS….• Third party API and online wallets: blockchain.info, Coinbase….• Bitcoin Payment Gateway API : bitpay, GoURL..• You can be your own financial system • Most of the security is on client side

Meetup and Conference• MCHAIN 2017 : Blockchain and cryptocurrency international

conference.• Upcoming Blockchain Meetup : https://goo.gl/HLtr2d

BITCOIN IS The futureQuestions?