BITCOINS - Amazon Web Servicesfelaban.s3-website-us-west-2.amazonaws.com/...payment in my new...
Transcript of BITCOINS - Amazon Web Servicesfelaban.s3-website-us-west-2.amazonaws.com/...payment in my new...
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BITCOINSReality – Fiction – Fraud : Risks & Opportunities
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Bitcoin 101: technology and currency
Andrea Castillo
Technology Policy Manager
Mercatus Center at GMU
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Roadmap for today
1) Distributed cash- double spending problem- Byzantine General’s problem
2) How does it work? - public key cryptography (wallets)- distributed ledger of transactions (blockchain)- distributed computer network (miners, nodes)
3) Benefits, Challenges, and Opportunities
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“I’ve been working on a new electronic cash system that’s fully peer-to-peer, with no trusted third party.”
November 1, 2008
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Trusted third parties are replaced by the PROTOCOL itself
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1 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf3.5 BTC 1kfjdkfjsfl357583hf -> 1dfkjr83roehskfjh2 BTC 1dfkjr83roehskfjh -> 1kfjdkfjsfl381 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf3.5 BTC 1kfjdkfjsfl357583hf -> 1dfkjr83roehskfjh2 BTC 1dfkjr83roehskfjh -> 1kfjdkfjsfl38
Valid!
1 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf
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Two barriers to direct online payments: (1) the double-spending problem and (2) the
Byzantine Generals problem.
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Double spending: how to achieve scarcity in a trustless environment?
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The “double spending” problemI’ll email you a
payment in my new e-currency, Bobgold.
As an attachment? Okay I guess.
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The “double spending” problem Hmm. If I copy
the file, I
can create new
Bobgold
whenever I
want.
If I can convince people to accept
Bobgold, I’ll never pay a real cent!
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Byzantine General: how to achieve consensus in a trustless environment?
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The “Byzantine Generals” problem
• It is very difficult to arrive at consensus in an environment without trust.
• Coding messages only works, but only to a point
• Coordinating a true payments ledger online is open to “attack” – falsification, fraud
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The “Byzantine Generals” problem
As long as
we’re
honest, this
should work. !
I can just add my name to the file
and they’ll think it’s mine!
I can’t accept this, it says it
belongs to Carl.
That
doesn’t
make
sense….
CAAAAAARL!
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Bitcoin achieves digital scarcity and consensus with public key cryptography and distributed ledger-keeping (the
blockchain)
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Public key cryptography (Bitcoin)
• Public and private Bitcoin key – like email address and password
• Gives us a way to verify identity without relying on a third party.
• He who controls the private key controls the bitcoins
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Distributed ledger-keeping (blockchain)
• Like BitTorrent: no one server runs/controls transfer
• Network of connected computers – “p2p”
• “Nodes” running “Bitcoin” software
• What are those computers doing? Math! Validate and keep track of transfers
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Mining
• Distributed computers apply processing power to solve math problems and verify blocks
• “Minting” bitcoins is the incentive
• 21 million bitcoin supply cap
• No one miner knows details of any one transaction, but all contribute to verification of ledger
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BOB’S SECRET PRIVATE KEY
Putting it together
BOB’S BITCOIN WALLET: 1HneLqnWhXYe1kSXTDQay1WpdR734R2Wqy
BOB’S SECRET PRIVATE KEY ALICE’S SECRET PRIVATE KEY
ALICE’S BITCOIN WALLET:1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v
Send 1BTC from my wallet to
Alice’s ALICE’S SECRET PRIVATE KEY
1 BTC DFLGKJSLKG -> DLFKGJSDLFG3.5 BTC DLFKGJSDLFG -> FGGGDS0.5 BTC FGGGDS -> DLFKGJSDLFG
Public ledger of transactions
Private key?Valid!
1 BTC 1HneLqnWhXYe1kSXTDQay1WpdR734R2Wqy -> 1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v
Square!
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1 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf3.5 BTC 1kfjdkfjsfl357583hf -> 1dfkjr83roehskfjh2 BTC 1dfkjr83roehskfjh -> 1kfjdkfjsfl381 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf3.5 BTC 1kfjdkfjsfl357583hf -> 1dfkjr83roehskfjh2 BTC 1dfkjr83roehskfjh -> 1kfjdkfjsfl38
Valid!
1 BTC 1kfjdkfjsfl38 -> 1kfjdkfjsfl357583hf
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What is a bitcoin?
• Fundamentally, a private key
• E9 87 3D 79 C6 D8 7D C0 FB 6A 57 78 63 33 89 F4 45 32 13 30 3D A6 1F 20 BD 67 FC 23 3A A3 32 62
• A digital representation of a claim to data on the blockchain
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Benefits• Personal control – a “PUSH” technology
• Exit options – Greece, Argentina
• Censorship proof – Wikileaks
• Affordable – remittances, micropayments
• “Programmable money” – smart contracts, identity, titling, arbitration…
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A balance
• The cat is out of the bag! Technology cannot be shut down (unless you shut down the Internet)
• Do not want a situation where law-abiding users cannot receive benefits, while criminals still use it for ill
• Conversations between developers, users, industry, and regulators – how to reap these benefits while addressing concerns?
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Oppor tun i t ies
September 3, 2015
RISKS &Regulat ion
Miami
@JuanL lanos o f B i t c o i n & C r y p t o c u r r e n c i e s
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blockchain 1.0© 2015 Juan Llanos
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blockchain 2.0© 2015 Juan Llanos
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permissioned vs. permission less
censorship-resistant vs. censorable
token vs. no token
f inancial vs. non-financial
open vs. closed
public vs. private© 2015 Juan Llanos
The Blockcha in Wars
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PARADIGMSquest ioned
m o n e ys o v e r e i g n t y
s e c u r i t yr e g u l a t i o n
p r o p e r t yi d e n t i t y
l a wg o v e r n a n c e
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RETHINKREDEFINEREINVENT
© 2015 Juan Llanos
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RewardsRisks &
© 2015 Juan Llanos
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© 2015 Juan Llanos
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• Reduced physical infrastructure
• Coordination via one distributed database
• Fewer front and back office inefficiencies
• Real-time Settlement / No commitment Risk
• Real-time auditing
• Some uses: settlement, custody, IPO & debt issuance, OTC collateral, margining, repo
Potential Benef i ts
© 2015 Juan Llanos
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Blockchain R&DRBS & CBA Ripple trial
Citi Blockchain Initiative
UBS Blockchain initiative
Barclays Lab + partnership with Safello
LHV Bank (Estonia) issuing
receivables via colored coins
HSBC Innovation Lab
SWIFT Blockchain research challenge
NASDAQ
IBM Blockchain Initiative
IBM-Samsung IoT Partnership
ING, ABN Amro, Rabobank
Deloitte, EY, PwC
Fidor Bank Ripple integration
CIBC pilot projects
Honduras real estate records
Greek Island gold-backed crypto-
currency
UK research and state support
NYSE, USAA, BBVA investments
USAA blockchain research
© 2015 Juan Llanos
Source: Constance Choi
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© 2015 Juan Llanos
“You should be taking blockchain technology as seriously as you should have been taking the development of the Internet in the early 1990s.”
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Oppor tun i t iesRISKS &
Regulat iono f B i t c o i n & C r y p t o c u r r e n c i e s
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cryptocurrency
virtual currency
digital currency
© 2015 Juan Llanos
crypto-assets
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Risk Areas
• operational
• credit
• money laundering
• terrorist financing
• information loss
• Liquidity
• fraud
• identity theft
Stakeholders
• federal agencies
• state agencies
• investors
• consumers
• employees
• society
Goals
• safety
• soundness
• security
• privacy
• crime prevention
• health
• integrity
R e g u l a t i o n Inevitable, yet valid
R i s k s & Stakeholders
C o m p l i a n c e Onerous, yet valuable© 2015 Juan Llanos
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© 2015 Juan Llanos
Smart Entrepreneurs
Enlightened Policy-makers, Regulators, Leaders
K N O W I T
W O R K TO G E T H E R
F O C U S O N T H E G O A L S
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R e a s o n s f o r R e g u l a t i n g F i n a n c i a l I n t e r m e d i a r i e s
CONSUMER PROTECTION
ML & TF PREVENTION
SYSTEMIC RISKS
TAXATION
© 2015 Juan Llanos
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“ transmission of money or value”
“cash or monetary equivalent ”
“value that substi tutes for currency ”
B i t c o i n R e g u l a t e d B e f o r e B o r n
© 2015 Juan Llanos
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F i n a n c i a l I n t e r m e d i a r i e sR i s k A r e a s
© 2015 Juan Llanos
Anti-Money Laundering (AML)
Countering the Financing of Terrorism (CFT)
Privacy and Information Security (InfoSec)
Safety and soundness (S&S)
Consumer disclosures & support (CP)
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Anonymity = Anathema• Anonymous identif icat ion
• No value l imits
• Anonymous funding
• No transact ion records
• Wide geographical use
• No usage l imits
Cash featuresFAT F R e p o r t o n N e w P a y m e n t M e t h o d s ( 2 0 0 6 )
© 2015 Juan Llanos
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Anonymous
Untraceable
“Invisible to law enforcement and the taxman”
Myths
e n h a n c e d s u r v e i l l a n c e a n d c o n t r o l
© 2015 Juan Llanos
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Consumer “Advisories”Lebanon, Germany , Hong Kong, Belgium ,
Indonesia, UK , Russia, Estonia , US-WI,
Greece , Israel , Brazi l , Phi l ippines, US-TX ,
Germany, US-CA , US-NV, Canada , US-ID,
US-SEC, US-IN , US-NM, Europe-CB ,
Argent ina, US-ME , Nether lands, Russia , US-
MI, France , Japan, Austral ia , UK, Serbia ,
Portugal , Norway , France, Canada , I re land
© 2015 Juan Llanos
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2014 EBAOpinion
© 2015 Juan Llanos
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conservative vs. progressive
aggressive vs. permissive
formal vs. substantial
restrictive vs. expansive
misguided vs. enlightened
© 2015 Juan Llanos
Regulatory Arb i t rage
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@JuanLlanos
Thank You