Bitcoin: The Digital Rush

Intervento al bitcoin Meetup di Venezia nel Campus universitario di Ca' Foscari

video:
https://www.youtube.com/watch?v=akDl0Vhu1ss&index=20&list=PLrVvuryXHYTdKXzpIx7aYAzqAiRpaebWp
https://www.youtube.com/watch?v=xjqqigfwENI&index=21&list=PLrVvuryXHYTdKXzpIx7aYAzqAiRpaebWp

Transcript

1. Bitcoin The Digital Rush ferdinando@ametrano.net https://github.com/fametrano https://twitter.com/Ferdinando1970 https://speakerdeck.com/nando1970 https://www.reddit.com/user/Nando1970/ https://www.slideshare.net/Ferdinando1970 https://it.linkedin.com/in/ferdinandoametrano https://www.youtube.com/c/FerdinandoMAmetrano Università Ca’ Foscari Venezia January 19, 2018
2. The Digital Rush • http://www.the-digital-rush.com/ • https://www.youtube.com/watch?v=BxVkdmX caKw 2/37 © Ferdinando Ametrano 2018
3. Bitcoin Is Hard to Understand At the crossroads of: 1. Cryptography 2. Distributed systems (networking and data transmission) 3. Game theory 4. Economic and monetary theory Mainly not a technology, a cultural paradigm shift instead 3/37 © Ferdinando Ametrano 2018
4. • Decentralized digital currency • Not backed by any government or organization • Instantaneous peer-to-peer transactions • No need for trusted third party • Cryptographic security • Synergic economic incentives • Efficient low-cost banking for everybody everywhere https://bitcoin.org/en/faq http://www.coindesk.com/information/ 4/37 © Ferdinando Ametrano 2018
5. The Information Economy • Data is transferred with zero marginal cost • Why pay a fee to move bytes representing wealth? • Why only 9-5, Monday-Friday, two days settlement? • Who (and when) will gift humanity with a global instantaneous free p2p payment network? BANK 5/37 © Ferdinando Ametrano 2018
6. Bitcoin • Decentralized: no central authority, no intermediaries • Permissionless: no regulator • Censorship resistant: no frozen funds • Open-access: no discrimination, no amount limits, 24/7, 365 days • Free: negligible transaction costs • Borderless: no geographic limits • Transnational: no specific jurisdiction applies • Secure: non falsifiable, non repudiable transactions • Resilient: nothing has been able to stop it or break it 6/37 © Ferdinando Ametrano 2018
7. A Bitcoin Transaction https://blockchain.info/tx/8f1d3a8ef6b2d4a25d2f499279e01518b4770819ccbc39a765c4c326170c61b3 About $83M transacted with $0.04 fee 7/37 © Ferdinando Ametrano 2018
8. BTC/USD Exchange Rate http://bitcoincharts.com/charts/bitstampUSD#tgWzm1g10zm2g25 • BTC Market Cap: about $200B (USD M0 1959-2017 average has been $680B) 8/37
9. Bitcoin Used by Terrorists Europol: • Despite third party reporting suggesting the use of anonymous currencies like Bitcoin by terrorists to finance their activities, this has not been confirmed by law enforcement https://www.europol.europa.eu/sites/default/files/publications/changes_in_modus_operandi_of_is_in_terrorist_attacks.pdf 9/37 © Ferdinando Ametrano 2018
10. Bitcoin for Money Laundering UK HM Treasury: The money laundering risk associated with digital currencies is low, though if the use of digital currencies was to become more prevalent in the UK this risk could rise https://www.gov.uk/government/publications/uk- national-risk-assessment-of-money-laundering-and- terrorist-financing 10/37
11. Ransomware • A malware propagated via infected email attachments and botnets • when activated, it encrypts files stored on local and mounted network drives • then it displays a message which offers to decrypt the data if a bitcoin payment is made 11/37 © Ferdinando Ametrano 2018
12. Bitcoin Resilience Is there anything else in financial world: • Just 9 years old • Without government or corporation backing • That can be banned in its main market (China 2013 and 2017) • With fraud/theft at its main reference exchange (Mt Gox) • With a bad reputation (Silk Road / Ransomware / Money Laundering / Terrorist Financing) That could be still alive and kicking? 12/37 © Ferdinando Ametrano 2018
13. Satoshi Nakamoto • Worked on Bitcoin since probably 2007 • Published the paper in 2008 • Released the code in January 2009 • Stopped involvement mid-2010 • Unknown identity: pseudonymous person or group? • He owns about 1M bitcoins, never spent http://mag.newsweek.com/2014/03/14/bitcoin-satoshi-nakamoto.html https://www.wired.com/2016/05/craig-wright-privately-proved-hes-bitcoins-creator/ http://www.bbc.com/news/technology-36168863 13/37 © Ferdinando Ametrano 2018
14. Nakamoto's Political Motivations • "Yes, [we will not find a solution to political problems in cryptography,] but we can win a major battle in the arms race and gain a new territory of freedom for several years. Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own." • "[Bitcoin is] very attractive to the libertarian viewpoint if we can explain it properly. I'm better with code than with words though." • In the Bitcoin's transaction database, the first entry has a note by Nakamoto: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks" 14/37 © Ferdinando Ametrano 2018
15. Double Spending Problem • To securely transfer value using digital means has been possible for decades • In digital cash schemes, a single digital token, being just a file that can be duplicated, can be spent twice • A centralized trusted party has always been required to prevent double spending 15/37 © Ferdinando Ametrano 2018
16. Mining • All network nodes validates transactions; those providing computational power for clearing and settlement are called miners. • Miners compete to validate a new block of transactions: the winner providing proof-of-work is rewarded with the issue of new bitcoins in a special coinbase transaction included in the block • Miners solve the double spending problem: – conflicting transactions spending the same coins would invalidate the block – an invalid block would be rejected from the network – the bitcoin reward would be removed from transaction history – miner would have wasted his work 16/37 © Ferdinando Ametrano 2018
17. Distributed Consensus • How do miners reach consensus on the transaction history? • Consensus in an asynchronous network with faulty (or malicious) nodes is proved to be impossible • A problem known as Byzantine General Problem 17/37 © Ferdinando Ametrano 2018
18. Nakamoto Consensus • Nakamoto achieves Practical Byzantine Fault Tolerant consensus using (game theory) economic incentive for the mining nodes to be honest. Bitcoin – solves double spending without a central trusted party – can resist attacks of malicious agents, as long as they do not control network majority • Miners are compensated for their proof-of-work using seigniorage revenues, i.e. with issuance of new bitcoins • Seigniorage revenues subsidize the network, making transaction almost free 18/37 © Ferdinando Ametrano 2018
19. Network Costs Covered By Seigniorage Revenues • 144 blocks per day, 365 days per year • 12.5 BTC per block, $18,000 per BTC Currently about $12 billions per year (as of December 2017) 19/37
20. Virtuous Cycle Hashing Power Bitcoin Security Bitcoin Price Mining Reward 20/37 © Ferdinando Ametrano 2018
21. Validation Process: Block Generation The proof-of-work difficulty is adapted to the overall available computing power to ensure an average of one block every ten minutes 21/37
22. Bitcoin Monetary Rule • 2009: 50BTC per block, every 10 minutes – halving every 4Y • This is the only way new bitcoins are released • It is called mining because of its similarity with the progressive scarcity of gold extraction • Supply free of discretionary intervention 22/37 © Ferdinando Ametrano 2018
23. Bitcoin Inelastic Supply: Deterministic Decreasing Rate chart 2029: 96.88% of all BTC issued 2141: last satoshi (0.00000001 BTC) will be issued 23/37
24. What Makes Bitcoin Special? • Digital and scriptural: it only exists as validated transaction • Asset, not liability • Bearer instrument • It can be transferred but not duplicated (i.e. it can be spent, but not double-spent) • Scarce in digital realm, as nothing else before • Mimicking gold monetary policy • More a crypto-commodity then a cryptocurrency Bitcoin is digital gold this is the brilliant groundbreaking achievement by Satoshi Nakamoto 24/37 © Ferdinando Ametrano 2018
25. Trade Economy From Gold Standard to Fiat Money • Gold: the commodity money standard – scarce – pleasant color, i.e. resistant to corrosion and oxidation – high malleability – relative easiness of its purity assessment • Gold purity certification • Representative money • Fractional receipt money • Fiat money and legal tender 25/37 © Ferdinando Ametrano 2018
26. Money As A Social Relation Instrument 1. Human beings are born into a gift economy 2. Enlarged relationship circle requires exchange economy 3. Barter economy: coincidence of wants 4. Trade economy: money as medium of exchange 5. Global information economy: supranational digital money 26/37 © Ferdinando Ametrano 2018
27. Friedrich August von Hayek Denationalisation of Money • history of coinage is an almost uninterrupted story of debasements; history is largely a history of inflation engineered by governments for their gain • why government monopoly of the provision of money is regarded as indispensable? It deprived public of the opportunity to discover and use a better reliable money Blessed will be the day when it will no longer be from the benevolence of the government that we expect good money but from the regard of the banks for their own interest A Free-Market Monetary System, Gold and Monetary Conference, New Orleans, Nov. 1977, https://mises.org/daily/3204 Hayek, F. A., Denationalisation of Money, The Institute of Economic Affairs, http://www.mises.org/books/denationalisation.pdf 27/37 © Ferdinando Ametrano 2018
28. Permissionless Innovation Fast and Effective • No centralized security mechanism, no barrier to enter, no editorial control – Email has not been designed by a consortium of postal agencies – Internet has not been developed by a consortium of telcos • Will a decentralized transactional economy be shaped by a consortium of banks? 28/37 © Ferdinando Ametrano 2018
29. Explain Money to an Alien fiat money • No intrinsic value (legal tender, social contract) • Currency based on paper/ink security • Discretionary governance • Wicksellian interest-rate approach bitcoin • No intrinsic value (digital gold) • Currency based on math/cryptographic security • Algorithmic governance • Deterministic supply 29/37 © Ferdinando Ametrano 2018
30. Bitcoin as (Digital) Gold in the History of (Crypto)Money gold • Its adoption was not centrally planned • For centuries it has been the most successful form of money • It has bootstrapped all monetary systems we know of • It has been surpassed by other kind of money without becoming obsolete bitcoin • Its adoption has not been centrally planned • It is the most successful form of cryptocurrency • It will bootstrap new monetary systems • It might be surpassed by more advanced type of cryptocurrencies without becoming obsolete 30/37 © Ferdinando Ametrano 2018
31. Risk Measures High return (x10,000 in 7 years) → high risks Daily Returns, July 2010 – October 2017 BITCOIN GRAIN WTI IND.METALS GOLD MSCI BRIC EUROSTOXX50 S&P500 XBT Curncy SPGSGRP Index CLA Comdty SPGSINP Index XAU Curncy MXBRIC Index SX5EWK Index SPX Index Mean 0,83% -0,02% -0,03% 0,00% 0,01% 0,00% 0,01% 0,04% Standard deviation 6,99% 1,41% 1,29% 1,24% 1,02% 1,12% 1,57% 0,92% Volatility 133,61% 26,87% 24,67% 23,60% 19,44% 21,47% 29,97% 17,62% Skewness 123,36% 20,68% 3,89% -13,38% -58,48% -26,23% -3,53% -37,00% Excess kurtosis 1482,10% 245,42% 421,23% 240,23% 566,63% 252,24% 522,26% 478,54% Minimum return -45,17% -5,88% -6,86% -6,49% -8,97% -6,69% -11,02% -6,66% Maximum return 67,71% 7,35% 7,17% 5,69% 5,20% 4,87% 11,81% 4,74% Value-at-Risk at 99% confidence 17,27% 3,69% 3,46% 3,19% 2,83% 3,20% 4,39% 2,67% Expected Shortfall at 99% confidence 25,99% 4,80% 4,66% 4,36% 3,95% 3,97% 5,67% 3,60% Worst Absolute Drowdown -93,07% -61,27% -59,51% -57,82% -44,58% -51,05% -44,33% -19,39% 31/37 © Ferdinando Ametrano 2018
32. A New Uncorrelated Asset Class Field = Last Price, Data Type = Pct Chg (1D), Log Type = None, Periodicity = 1D, Currency = Dflt, Start Date = 24/07/2010, End Date = 13/10/2017 BITCOIN GRAIN WTI IND.METALS GOLD MSCI BRIC EUROSTOXX50 S&P500 XBT Curncy SPGSGRP Index CLA Comdty SPGSINP Index XAU Curncy MXBRIC Index SX5EWK Index SPX Index XBT Curncy 100% 4% 1% 4% 0% 1% 5% 4% SPGSGRP Index 4% 100% 19% 22% 14% 16% 15% 16% CL1 Comdty 1% 19% 100% 37% 15% 31% 31% 36% SPGSINP Index 4% 22% 37% 100% 32% 44% 48% 37% XAU Curncy 0% 14% 15% 32% 100% 12% 9% -1% MXBRIC Index 1% 16% 31% 44% 12% 100% 58% 49% SX5EWK Index 5% 15% 31% 48% 9% 58% 100% 63% SPX Index 4% 16% 36% 37% -1% 49% 63% 100% 32/37 © Ferdinando Ametrano 2018
33. What About Blockchain? “When a wise man points at the moon the imbecile examines the finger.” (Confucius) “When a wise man points at the bitcoin the imbecile examines the blockchain.” (Ametrano) To the Moon! 33/37 © Ferdinando Ametrano 2018
34. Alternative Coins • Ripple: the financial institution friendly cryptocurrency • Litecoin: basically a bitcoin testnet • Monero, Zcash: more privacy than bitcoin • Ethereum: basically a global computer with rich statefulness and global persistent memory. The coin is used as fuel for uncensorable computations 34/37 © Ferdinando Ametrano 2018
35. Initial Coin Offering • App-coin, mostly released on Ethereum (ERC20 Token Standard) • Alternative investment approach, disintermediating Venture Capital • Extremely promising and powerful, it has been so far mostly used for frauds • Does the app-coin (token): – Have intrinsic scarcity? – Have any utility in the app? – Have any peculiarity making bitcoin or ether unfit for the task? • If the company fails and the coin value goes to zero, does the entrepreneur suffer the same consequences? 35/37 © Ferdinando Ametrano 2018
36. Bibliography • Satoshi Nakamoto, Bitcoin: A Peer-to-Peer Electronic Cash System (2008) https://bitcoin.org/bitcoin.pdf • Ferdinando Ametrano, Bitcoin, Blockchain and Distributed Ledger Technology: Hype or Reality? (2017) https://goo.gl/Z9OeHt • Ferdinando Ametrano, Il Far West dell’oro digitale (2017) http://nova.ilsole24ore.com/progetti/il-far-west-delloro- digitale/ • Ferdinando Ametrano, Bitcoin and Blockchain Technology, YouTube videos, https://goo.gl/mCZ3Wg 36/37 © Ferdinando Ametrano 2018
37. Conclusions • Bitcoin is hard to understand: it is not a technology, a cultural paradigm shift instead • Bitcoin solves the double spending problem (distributed consensus), allowing for the decentralization paradigm • Bitcoin is digital gold and could be as relevant as physical gold for the history of our civilization and the future of money & finance • Bitcoin is a new asset class with no correlation with other asset classes: investing in bitcoin is rational diversification • Alt-coins are less relevant, ICO are mostly frauds 37/37 © Ferdinando Ametrano 2018