PPT-Bitcoin

Based on Bitcoin Tutorial presentation by Joseph Bonneau Princeton University Bonneau slides marked JB Bitcoin today October 2 2015 Bitcoin is a combination of several things a currency a payment system and a collection of algorithms and software implementations. most. pertinent aspects in a computer science perspective. Hugues Bersini . Jérémie Dubois-Lacoste. IRIDIA/ULB. Intro: My . three. . favourite. aspects. Distributed. – . Decentralized. – No . David Evans and Samee Zahur. Mining. Why do we need miners?. Conflicting Blocks. Consensus. Majority of hashing power has voted for transactions on longest chain. . It is costly to increase voting power. A Decentralized, Public Ledger . Digital Asset Transfer Mechanism. The views and opinions expressed here are not necessarily those of the Federal Reserve Bank of St. Louis or of the Federal Reserve System.. K. haled. . Baqer. , Danny . Yuxing. Huang, Damon McCoy and Nick Weaver. (given by Ross Anderson). . Overview. Spam attack on Bitcoin (July 2015. ). Importance: block size debate! At present you can bring down . Barter. Goods *BECOME* Money. Acceptable. Durable. Portable. Scarce. Divisible. Recognizable. Gold Storage -> Paper Receipts. England, 17. th. Century. Safety for travelers. Charles I’s Royal Mint loan (1640). What is Bitcoin?. Digital currency created in 2009. Peer-to-peer technology with no central authority. No physical bitcoins; seen as property by IRS. Price is volatile . Uses blockchain technology. Anonymous. Digital Currency. Chaum’s. ideas in the 1980’s. All ideas required a central bank or . single point of trust. Chaum. started a company. DigiCash. in 1990. Bankrupt. in 1998. Lots of other companies you’ve never heard of have attempted digital cash. Field. Purpose. Updated when …. Size (Words). Version. Block version. number. You upgrade. the software and it specifies a new version. 1. hashPrevBlock. 256-bit hash of the previous block header. Bitcoin . Technology is Game . Changer. Bitcoin != bitcoin. . Decentralized != distributed. Censorship Resistant. Permission-less. Public transactions. Immutable . record. Standardize way to talk money. What are the . limits to growth?. What are the . limits to growth?. P. opulation increases by a billion every . 12 or 13 years!. Population increases 200,000 per day . (350,000 . born . v. 150,000 die). Use our guide to find all of the supported exchanges and bitcoin ATMs within Japan quickly and efficiently. Download it now. Visit: https://www.smartbitcoininvestments.com/buy-bitcoin-in-japan/ Use our guide to find all of the supported exchanges and bitcoin ATMs within the United Arab Emirates quickly and efficiently. Download it now. Visit: https://www.smartbitcoininvestments.com/buy-bitcoin-in-united-arab-emirates/ Use our guide to find all of the supported exchanges and bitcoin ATMs within California quickly and efficiently. Download it now. Visit: https://www.smartbitcoininvestments.com/buy-bitcoin-in-california/ Use our guide to find all of the supported exchanges and bitcoin ATMs within Washington quickly and efficiently. Download it now. Visit: https://www.smartbitcoininvestments.com/buy-bitcoin-in-washington/