Bitcoin and the Blockchain: Great hope or great hype? · Great hope or great hype? Satoshi Nakamoto...
Transcript of Bitcoin and the Blockchain: Great hope or great hype? · Great hope or great hype? Satoshi Nakamoto...
Staci Warden
March 21, 2018
Bitcoin and the Blockchain:
Great hope or great hype?
Satoshi Nakamoto
“The root problem with conventional currency is all the trust that’s required to
make it work. The central bank must be trusted not to debase the currency,
but the history of Fiat currencies is full of breaches of that trust. Banks must
be trusted to hold our money and transfer it electronically, but they lend it out
in waves of credit bubbles with barely a fraction in reserve. We have to trust
them with our privacy, trust them not to let identity thieves drain our
accounts… With e-currency based on cryptographic proof, without the need
to trust a third-party middleman, money can be secure and transactions
effortless.”
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What’s wrong with a using a Central Counterparty for making payments?
Access is regulated (barriers to entry can be high)
You have to trust that counterparty (credit risk)
Your account can be frozen, taxed, or confiscated
Your counterparty could refuse to make your payment
Your payment could be reversed
Money transfer takes time
Somebody (not you) is keeping that float
Money transfer is costly
Payment and transaction banking revenue $524 billion last year (BCG)
Fees 2-3 percent; more in LDCs
Your transaction reveals information about you
Target 70 mm customers
Merchants have to reject 5-10% of orders
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Bitcoin is a different system
It is not a trust-based system:
It is disintermediated. There is no central counterparty in
charge of bookkeeping for your account (no credit risk)
The public ledger is transparent to everyone
All the software, architecture, and rules are open source
It’s a consensual system
Peer to peer network of (currently) approximately 20,000 nodes
Everybody plays by the same set of rules
Decisions (additions, changes, anything) require agreement by
system participants (nodes).
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Bitcoin has some really great “monetary” properties
Transaction costs are low (trust costs money)
Barriers to Entry are extremely low
It’s pseudonymous
Accounts are not maintained, only transactions are maintained
But traceability is inherent
Transactions are irreversible after about one hour (to be safe).
Micropayments can be made easily
Bitcoin is different than other currencies because it’s arbitrarily
divisible.
It is now divisible to eight decimal places (currently)
So you can charge .00000001 for something = one satoshi
The bitcoin universe has 2.1 quadrillion Satoshi
There are approximately 1 quadrillion pennies out there.
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Bitcoin is a deflationary currency
There is no monetary authority that creates bitcoins….and the supply dynamics are
known ex ante
There is a limited supply of bitcoins
21 million will be created in total
Expected to be reached in about 2140
The rate of supply diminishes over time
In a predictable way…..this is really important
The amount of bitcoins awarded halves with every 210,000 blocks mined – Every four years. (started
with 50 bitcoins per block mined; since November of 2012, 25) award halved to 25 bitcoins.
“lost” bitcoins are never replaced
This happens by losing your private key
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Bitcoin’s supply dynamics
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Source: Bitcoin Forum; whitslack
But is Bitcoin a good currency?
It is illiquid. JPM: Daily turnover of the Mauritius Stock Exchange
It is volatile. 20X more volatile than the JPY. Daily drops of 35%
No cash yield.
No Full Faith and Credit. Limits usage. No deposit insurance
When it’s gone it’s gone. Don’t lose your private key.
Are transactions costs really that low?
Deflationary currencies are inherently recessionary.
High volatility undermines its ‘store of value’ properties
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Sources: bitcoincharts.com, Milken Institute
Daily price movements of BitStamp (USD)
Bitcoin Price 3/20/2018 (USD)
Bitcoin Compared to Historical Asset Bubbles
What is the big deal, though, really?
Bitcoin is a distributed database where the order of transactions is
agreed upon by everybody.
Therefore, there is no question about legitimacy. Everybody agrees on
who has won (who got there first)
It solves the “double spending” problem without the requirement of a
central counterparty.
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So what?
What if Alice paid Bob and then immediately paid Staci?
What if an “evil node” went back and made alterations to a block and then recreated a
competing block chain from that point??
Which one would be legitimate?
Who knows? This needs to be decided and everybody needs to agree on the
answer
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You need to get lucky
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Richie S. King. By reading this article, you’re mining Bitcoins. www.qz.com
This is how the bitcoin money supply is managed
“Miners” are rewarded bitcoins for maintaining the security of the system.
Creating blocks to form the public ledger.
New blocks are validated – and thus new bitcoins generated – every ten
minutes.
Every 2016 blocks (two weeks) the actual time taken is assessed. If it
didn’t take enough time, the problem becomes more difficult. So the rate
stays basically the same.
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Changes, variations, and applications
Change the money supply dynamic rules
Accommodate the level of trust
Build on bitcoin or create your own
The blockchain: it’s not just about the money
Provenance
Usage
Compartmentalization
Rule-based automatic execution (smart contracts)
From IPOs to ICOs?
Total Crypto Market Cap
Source: Coinmarketcap.com
Top 10 Cryptocurrencies
Note: There are currently more than 1,500
cryptocurrencies, according to CoinMarketCap
Crypto Market Cap Share
Source: 2017 Global Cryptocurrency Benchmarking
Study; Cambridge Center for Alternative Finance
VC Funding Into Blockchain Startups
Blockchain Equity Financing
Blockchain Equity Financing vs. ICO Financing
Quarterly ICO Round Counts & Dollar Amounts for 2017