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Crypto Currency, Bitcoin
and
Blockchain
Developed and Facilitated by Goutama Bachtiar
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v1.1.5
Goutama
Bachtiar
Digitally signed by
Goutama Bachtiar
Date: 2019.09.11
01:31:48 +07'00'
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August 2019Crypto, Bitcoin & Blockchain
Image: VideoBlocks
3
Course Agenda
Session 1: Cryptography: Concept and
Technology
Session 2: Exploring Crypto Currency
Session 3: Blockchain and Distributed
Ledger
Session 4: Bringing Bitcoin Further
August 2019Crypto, Bitcoin & Blockchain
Image: Benziga
4
Course Agenda (cont’d)
 Session 5: Moving Blockchain Forward
 Session 6: Leveraging Blockchain Benefits
 Session 7: Understanding ICO and Smart
Contract
August 2019Crypto, Bitcoin & Blockchain
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▪ 09.00AM – 10.20AM: 1st Session
▪ 10.20AM – 10.40AM: 1st Coffee Break
▪ 10.40AM – 12.00PM: 2nd Session
▪ 12.00PM – 01.10PM: Lunch Time & Pray
▪ 01.10PM – 03.00PM: 3rd Session
▪ 03.00PM – 03.20PM: 2nd Coffee Break
▪ 03.20PM – 05.00PM: 4th Session
August 2019 Crypto, Bitcoin & Blockchain
Our Schedule
Image: InsiteCommercial 6
Cryptography: Concept and
Technology
Session 1
Crypto, Bitcoin & Blockchain 7
The concept and practice of “hiding” and “unhiding”
information.
How? By encapsulating a plain text/data into an
unmeaningful data and then retransforming it into its
original form.
The Objective? To provide Confidentiality, Integrity,
Accuracy.
August 2019 Crypto, Bitcoin & Blockchain
What Cryptography Is?
Image: Wall2born 8
Encryption
The process of converting plain text into an unintelligible
format (or known as cipher text)
Decryption
The process of converting chipper text into plain text
August 2019 Crypto, Bitcoin & Blockchain
Encryption vs Decryption
Image: Wall2born 9
August 2019 Crypto, Bitcoin & Blockchain
Encryption vs Decryption (cont’d)
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Symmetric Key
Known as Secret Key.
Same key is utilized
by both parties.
The key must be kept
secret by them
Pros
Simpler. Faster.
Cons
Less secured.
August 2019 Crypto, Bitcoin & Blockchain
Type of Cryptography
Image: Wall2born 11
Asymmetric Key
Known as Public Key.
2 different keys per user.
Public key shall be made
public, while private key shall
be privately maintained.
Pros
More secured.
Cons
Relatively complex.
August 2019 Crypto, Bitcoin & Blockchain
Type of Cryptography (cont’d)
Image: Wall2born 12
Asymmetric Key
Same key is utilized
by both parties
Pros
Simpler. Faster.
Cons
Less secured.
August 2019 Crypto, Bitcoin & Blockchain
Type of Cryptography (cont’d)
Image: Wall2born 13
A variable value that is applied using an algorithm to a
string or block of unencrypted text to produce encrypted
text, or to decrypt encrypted text.
The length of the key is a factor in considering how difficult
it will be to decrypt the text in a given message.
August 2019 Crypto, Bitcoin & Blockchain
What is a Key
Image: Wall2born 14
Message Digest Functions
- Protect integrity
- Create a message digest or fingerprint of a digital
document
- Example: MD4, MD5, SHA
Message Authentication Codes (MACs)
- Protect both integrity and authenticity
- Produce fingerprints based on both a given document
and a secret (private) key
August 2019 Crypto, Bitcoin & Blockchain
Hash Function
Image: Wall2born 15
SHA-0 1993
SHA-1 1995
A set of cryptographic hash functions designed by the
United States National Security Agency (NSA).
SHA-2 2001
SHA-2 family consists of six hash functions with digests
(hash values): 224, 256, 384 or 512 bits: SHA-224, SHA-256,
SHA-384, SHA-512, SHA-512/224, SHA-512/256.
Published in 2001 by National Institute of Standards and
Technology (NIST), a U.S. Federal Standard (FIPS).
August 2019 Crypto, Bitcoin & Blockchain
Secure Hash Algorithm (SHA)
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Exploring Crypto Currency
Session 2
August 2019 Crypto, Bitcoin & Blockchain 17
Digital Currency
• Part of E-Cash or E-Money known as Virtual Currency
• Bitcoin is the first decentralized, crypto digital/virtual
currency
• Peer-to-Peer currency with mathematic protection
• No centralized control/Central Bank
• Based on cryptographic proof (SHA256) instead of trust
• Developed by a person/group under pseudonym of Satoshi
Nakamoto (2008)
• Operational since early 2009
• No financial institutions involved or managed
August 2019 Crypto, Bitcoin & Blockchain 18
Digital Currency (cont’d)
Example of Digital/Virtual Currency centralized and not
crypto: https://koinworks.com/lender?locale=id
August 2019 Crypto, Bitcoin & Blockchain 19
The First Crypto Currency
20
•It was Bitcoin (BTC)
•A maximum of 21 million Bitcoins can be generated
•The Satoshi is the smallest unit of bitcoin recorded on
blockchain (it's a one hundred millionth of a single
bitcoin (0.00000001 BTC)
•https://www.cryptocoincharts.info/coins/info claims to
be indexing 4,220 cryptocurrencies
•Bitcoin is one of the Blockchain digital assets.
•Most circulated: Bitcoin, Ethereum, Litecoin
August 2019 Crypto, Bitcoin & Blockchain
Bitcoin’s Key Concepts
August 2019 Crypto, Bitcoin & Blockchain
Bitcoins
Transactions
Proof of
Work
Mining
Digital Wallet
21
BTC Transactions
• Straight away between owner and receiver
• Broadcasted through Peer-to-Peer (P2P) network
• All are public but anonymous
• Mining nodes collects the transactions into Blocks
August 2019 Crypto, Bitcoin & Blockchain 22
BTC Transactions (cont’d)
• Transactions Blocks  Full
page in a Ledger Book
• Block contains information
about transactions and
previous Block (Block
Chain) linking to the first
block when Bitcoin Network
started.
August 2019 Crypto, Bitcoin & Blockchain 23
Bitcoin Advantages
• BTC software unchangeable without majority users within entire
network accepting the change
• While majority of nodes are honest, attackers cannot harm the system
• Attacker would need astronomical computer power to corrupt block
chain
• No government can print more money
• Anonymity
• Lower global transaction costs
• New bubble may emerge (?): Oct13 = USD150 while Nov13 is more
than USD500
• March 2013: BTC passed 1 Billion USD (around 11 million Bitcoins in
circulation)
August 2019 Crypto, Bitcoin & Blockchain 24
August 2019 Crypto, Bitcoin & Blockchain
Image: Deloitte UK Report 2016
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Technology Behind Bitcoin
26
•Think of Bitcoin as an electronic asset other than
digital, crypto currency
•A network of computers keeps track of Bitcoin
payments and adds them to an ever-growing list of
them which have been made, called “The Bitcoin
Blockchain”.
•The file that contains data about all Bitcoin
transactions is often called a “ledger”.
August 2019 Crypto, Bitcoin & Blockchain
Technology Behind Bitcoin (cont’d)
27
•Bitcoin value is created through transaction
processing, referred to as “mining”.
•Mining is performed by distributed processors
called “nodes” of the peer-to-peer network.
•Blockchain without digital asset in this case crypto
currency? NO.
August 2019 Crypto, Bitcoin & Blockchain
Technology Behind Bitcoin (cont’d)
28
•Bitcoin value is created through transaction
processing, referred to as “mining”.
•Mining is performed by distributed processors
called “nodes” of the peer-to-peer network.
•Blockchain without digital asset in this case crypto
currency? NO.
August 2019 Crypto, Bitcoin & Blockchain
Ethereum
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A decentralized platform that runs smart contracts:
applications that run exactly as programmed without
any possibility of downtime, censorship, fraud, or third-
party interference.
The Ethereum project was bootstrapped via an ether
pre-sale during August 2014.
The project is developed by Ethereum Foundation, a
Swiss nonprofit, with contributions from individuals and
organizations across the globe.
August 2019 Crypto, Bitcoin & Blockchain
Ethereum Components
30
• Ethereum Wallet
A gateway to decentralized applications on
Ethereum blockchain, allowing users to
hold and secure ether and other crypto-
assets built on Ethereum, as well as write,
deploy and use smart contracts.
• Design and issue your own
cryptocurrency/traceable token
• Kickstart a project with CrowdSale
August 2019 Crypto, Bitcoin & Blockchain
Enterprise Ethereum Alliance
31
Permissioned Blockchain
August 2019 Crypto, Bitcoin & Blockchain
Ether
32
• The crypto-fuel for Ethereum network.
• A form of payment made by clients of platform to machines
executing requested operations, functioning as incentive to
ensure that developers will write quality applications, and
network remains healthy.
• Developers who intend to build apps that will use the
Ethereum blockchain need ether.
• Users who want to access and interact with smart contracts
on Ethereum blockchain also need ether.
August 2019 Crypto, Bitcoin & Blockchain
How was Ether Created?
33
• Total supply and its rate of issuance was decided by
donations on 2014 presale.
• 60 million ether created to contributors of the presale.
• 12 Million (20% of the above) were created to the
development fund.
• 3 ethers are created every block (roughly 15 seconds) to the
miner of the block.
• 0.625-2.625 ethers are sometimes sent to another miner if
they were also able to find a solution.
August 2019 Crypto, Bitcoin & Blockchain
Ethstats.net
34
Statistics of Ethereum nodes on public Ethereum Blockchain
August 2019 Crypto, Bitcoin & Blockchain
Blockchain and Distributed Ledger
Session 3
August 2019 Crypto, Bitcoin & Blockchain 35
What is Blockchain?
36
• A technology that permits transactions to be gathered
into blocks and recorded.
• Allows the resulting ledger to be accessed by different
servers.
• Cryptographically chains blocks in chronological
order.
• First introduced in whitepaper “Bitcoin: A Peer-to-Peer
Electronic Cash System,” by Satoshi Nakamoto in
2008.
August 2019 Crypto, Bitcoin & Blockchain
What is Blockchain? (cont’d)
37
• A Distributed Transaction Ledger
• Every block contains multiple transactions
• Massively duplicated across network nodes
• Shared with a P2P file transfer protocol
• All network nodes perform transaction validation and
clearing.
• Updated by peculiar nodes, known as miners, appending
new blocks of transactions
• Miners perform the additional work required for settlement.
August 2019 Crypto, Bitcoin & Blockchain
What is Blockchain? (cont’d)
38
Whilst Bitcoin themselves:
• No reliance on trust
• Digital signatures
• Peer-to-peer network
• Proof-of-work
• Public history of transactions
• Honest, independent nodes control majority of CPU computing
power
• Nodes vote with CPU computing power
• Rules and incentives enforced through consensus mechanism
August 2019 Crypto, Bitcoin & Blockchain
What is Blockchain? (cont’d)
39
To imagine:
“Giant interactive
Google doc
spreadsheet that
anyone can view
and administrators
(miners)
continually verify
and update to
confirm that each
transaction is
valid”
August 2019 Crypto, Bitcoin & Blockchain
Distributed Ledger
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Ledger
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• A Ledger of Transactions stored as Immutable Blocks.
• Blocks are connected to one another hence forming a Chain.
• The validity of which has been agreed upon by Peers on a Decentralised
network secured by Cryptography.
• Whilst Shared Ledger is:
The Components
42August 2019 Crypto, Bitcoin & Blockchain
• Node: refers to client who owns the block.
• Transaction: Transfer of something from A to B.
• Block: Bundle of transactions.
• Miners: Burns effort, time and energy to create blocks, therefore get
rewarded by Block Reward + Transaction Fees.
• Block Reward: New coins created with each block, goes to miner.
• Transaction Fees: Small percentage of transaction value, which
goes to the miner.
• Mining: process by which blocks are created, transactions are
verified and added to blockchain.
The Node
43August 2019 Crypto, Bitcoin & Blockchain
• A client, which owns the block.
• A copy of the ledger operated by a participant of the
blockchain network.
• Contains one or more than one account.
• Miner (Account) mines on the specific node to whom they
belongs.
The Block
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• Bundle of Transactions.
• Contains previous block hash.
• All blocks are linked using their hash.
• Data can’t be changed in one block without breaking the
chain.
Cryptography
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Initiation and
Broadcasting of
Transaction
▪ Digital Signature
▪ Private and Public
Keys
Validation of
Transaction
Proof of Work and
Certain Alternatives
Chaining Blocks Hash Functions
Public Key
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• A large numerical value used to encrypt data/file/message.
• Encrypted file is intended for a particular recipient, and it could be
decrypted only by using the second key known only to the
recipient (the private key).
Therefore the sender must know the recipient public key, encrypted the file with
that key and sent it to his/her. He/she receives and decrypt it with his/her own
private key.
• Can be generated by a software, website, or provided by several
organization, Certificate of Authority (CA) for instance.
• Made available to everyone by telling others or through a publicly
accessible repository/directory service or server.
Example of Public Key
47August 2019 Crypto, Bitcoin & Blockchain
Private Key
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• A large numerical value that is mathematically linked to the public
key.
• Whatever is encrypted with a Public Key may only be decrypted
by its corresponding Private Key and vice versa.
• Can be generated by a software, website, or provided by several
organization, Certificate of Authority (CA) for instance.
• Shall be kept securely and privately by the owner/holder.
• Symmetric/Private Key encryption uses the same private/secret
key for both encryption and decryption whilst asymmetric/public
key encryption uses two linked keys and required higher
computing resources.
Example of Private Key
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Digital Signature
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August 2019 Crypto, Bitcoin & Blockchain 51
• Owner (subscriber/sender) name
• A Serial Number (unique; generated by CA)
• Expiration date
• A copy of certificate holder’s Public Key (utilized for
encrypting messages and digital signatures)
• Digital Signature of CAs so a recipient/second party can
verify the certificate is real.
• Standards: X.509, PKI X.509 and Public Key Cryptography
Standards (PKCS).
Digital Certificate
Proof of Work
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• A system that ties mining capability to computational
power.
• When a block is successfully hashed, the hashing must
have taken some time and computational effort
• Hashed block is considered proof of work.
• In other words, transaction is confirmed in the
blockchain.
• Done by the node/miners.
Hash Function
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• A hexadecimal code used SHA-256
• Blockchain uses Cryptographic Hash Function.
It takes any string as input
Fixed-size of output (256 bits)
Efficiently Computable
Security Properties (Collision free, Hiding and Puzzle friendly)
Distributed Consensus
54
• Satoshi Nakamoto reaches consensus using game theory
in this case economic incentive for mining nodes to be
honest and do as they are expected.
• Miners are compensated for their proof-of-work
(validating, settling and clearing transaction) using
seigniorage revenues, i.e. with issuance of new bitcoins.
August 2019 Crypto, Bitcoin & Blockchain
How Blockchain Works
55
• A participant is a member of a network
– Customer, Supplier, Government, Regulator
– Have specific identities and roles
• A transaction is an asset transfer between two or more participants:
– John gives a car to Anthony (simple)
– John gives a car to Anthony, Anthony gives money to John (more
complex)
• A contract is set of conditions under which transactions occur:
– If Anthony pays John money, then car passes from John to Anthony
(simple)
– If car won't start, funds do not pass to John (as decided by independent
third party arbitrator)
August 2019 Crypto, Bitcoin & Blockchain
How Blockchain Works (cont’d)
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How Blockchain Works (cont’d)
August 2019 Crypto, Bitcoin & Blockchain 57
Therefore, the Blockchain
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August 2019 Crypto, Bitcoin & Blockchain 59
Image: Deloitte UK Report 2016Image: Blockchain.info October 2018
Blockchain in a Nutshell
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Broader participation, increased efficiency and lowered cost
Three Major Usage
61
1. Storing digital records
2. Exchanging digital assets (digital, crypto
currency as known as token)
3. Executing Smart Contracts
i. Ground rules: Terms & conditions recorded in code.
ii. Distributed network executes contract and monitors compliance.
iii. Outcomes are automatically validated without third-party
individual or organization.
August 2019 Crypto, Bitcoin & Blockchain
August 2019 Crypto, Bitcoin & Blockchain 62Image: IBM
Blockchain Networks
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• Public (Permissionless Blockchains)
Example: Bitcoin, Ethereum, Litecoin
• Private (Permissioned Blockchains)
Example: Multichain, Monax
• Consortium Blockchains
Example: R3, EWF, Corda
Blockchain Networks (cont’d)
64August 2019 Crypto, Bitcoin & Blockchain
Image: CoinDesk Consensus Q1 2017 Report
Global Fintech Landscape
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Bringing Bitcoin Further
Session 4
August 2019 Crypto, Bitcoin & Blockchain 66
Mining Revolution
67
Bitcoins are generated in blocks.
Nowadays one block is mined every 10 minutes (144 blocks/day)
One block is, at the moment,12.5 BTC
Reward will be distributed depending on the miner’s hash rate
Hash rate is the rate your mining hardware performing as reported
by your miner software or from an estimate obtained from mining
hardware comparison tables
BTC generation will stop at 2140 (around 21 million)
Block reward started at 50 BTC in block #1 and halves every
210,000 blocks.
August 2019 Crypto, Bitcoin & Blockchain
Mining Revolution (cont’d)
• ASIC (Application Specific Integrated Circuit) has been
designed strictly for mining BTC.
• Groups of miners have formed mining pools, with each being
paid their relative share for their contribution to the work
performed.
• After 2140 the incentive will be only the transaction fee.
• Around 17 million BTC in existence — only 4 million left to
'mine’.
• When hitting 21 million, the blocks will still be created as long
as people are trading it.
August 2019 Crypto, Bitcoin & Blockchain 68
Bitcoin Mining Pools
Ranked based on the hash power controlled by a pool:
1. AntPool (25.2%)
2. BTC.TOP (11.2%)
3. BTC.com (10.2%)
4. Bixin (8.1%)
5. BTCC Pool (7.3%)
6. F2Pool (5.4%)
7. ViaBTC (5%)
8. BW.COM (5%)
9. BitClub Network (4.8%)
10.Bitcoin.com (3%)
August 2019 Crypto, Bitcoin & Blockchain 69
Token In Details
70
• Can be defined as “scarce digital asset based on
underlying technology inspired by Bitcoin.”
• Ethereum was Bitcoin-inspired but has its own
blockchain and more programmable.
• Tokens can be issued on top of Ethereum blockchain.
• Token buyers are buying private keys and can be
transferred to other parties without consent.
August 2019 Crypto, Bitcoin & Blockchain
Token In Details (cont’d)
71
• Have a value and therefore a price.
• Do not dilute capital. They introduce a huge increase
to buyer base and time-to-liquidity.
• Can be issued as a way to share profits.
• Can be sold internationally over internet and are
always open for business.
• Decentralize process of funding technology.
• Accommodate immediate custody without
intermediary.
August 2019 Crypto, Bitcoin & Blockchain
Trading Platform and Exchange (cont’d)
• BTC-e
Digital currency trading platform and exchange
Founded in July 2011, HQ in Russia
As of Feb15 handles 2.5% all Bitcoin exchange
volume
Allows trading between currencies USD, RUR and
EUR, and cryptocurrencies Bitcoin, Litecoin,
Namecoin, Novacoin, and Peercoin
Been component of CoinDesk Bitcoin Price Index
(Sep13)
August 2019 Crypto, Bitcoin & Blockchain 72
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain 73
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain 74
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain
Image courtesy of wikipedia.org
75
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain
Image courtesy of wikipedia.org
76
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain
Image courtesy of wikipedia.org
77
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain
Image courtesy of wikipedia.org
78
Trading Platform and Exchange (cont’d)
August 2019 Crypto, Bitcoin & Blockchain
Image courtesy of wikipedia.org
79
Bitcoin’s
Blockchain
Stats
80
Summary of bitcoin statistics for the
previous 24-hour period from
Blockchain.info
August 2019 Crypto, Bitcoin & Blockchain
Bitcoin’s Blockchain Stats
81
Summary of bitcoin statistics for the previous 24-hour period from Blockchain.info
August 2019 Crypto, Bitcoin & Blockchain
How to Store Crypto
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Ledger Nano S
Ledger Blue
How to Store Crypto (cont’d)
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August 2019 Crypto, Bitcoin & Blockchain
How to Store Crypto (cont’d)
84
August 2019 Crypto, Bitcoin & Blockchain
How to Store Crypto (cont’d)
85
Bitcoin Challenges
August 2019 Crypto, Bitcoin & Blockchain 86
Bitcoin Challenges (cont’d)
August 2019 Crypto, Bitcoin & Blockchain 87
August 2019 Crypto, Bitcoin & Blockchain 88
August 2019 Crypto, Bitcoin & Blockchain 89
Moving Blockchain Forward
Session 5
August 2019 Crypto, Bitcoin & Blockchain 90
August 2019 Crypto, Bitcoin & Blockchain 91
TRANSACTION
Elements of Transaction
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Example of Transaction
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Receiving BTC in Blockchain.info Wallet
Receiving BTC in Blockchain.info Wallet
Local time when BTC
received by the wallet
The sender’s ‘Send’ Wallet ID
The receiver’s ‘Receive’ Wallet
ID (hashed)
Example of Transaction (cont’d)
94August 2019 Crypto, Bitcoin & Blockchain
Receiving BTC in Blockchain.info Wallet
Status of
Transaction
Confirmation time
between minutes until
hours
URL of the
Transaction
The sender’s
‘Send’ Wallet ID
Example of Transaction (cont’d)
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August 2019 Crypto, Bitcoin & Blockchain 96
BLOCK
Visualization
97August 2019 Crypto, Bitcoin & Blockchain
Inclusive of
Block creation
time
98August 2019 Crypto, Bitcoin & Blockchain
Example of Block
Current Block
99August 2019 Crypto, Bitcoin & Blockchain
Example of Block (cont’d)
Previous Block
100August 2019 Crypto, Bitcoin & Blockchain
Example of Block (cont’d)
Next Block
101August 2019 Crypto, Bitcoin & Blockchain
Example of Transactions Inside the Block
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Example of The Largest Transaction
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Example of Unconfirmed Transaction
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Example of Strange Transaction
Transactions containing outputs from which were unable to decode a bitcoin address
Detached/Orphaned Block
105
• Valid blocks which are not
part of the main chain.
• They can occur naturally
when:
▪ Two miners produce
blocks at similar times
▪ Caused by an
attacker with enough
hashing power attempting
to reverse transactions.
August 2019 Crypto, Bitcoin & Blockchain
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Rejected Inventory
Transactions and blocks which have been rejected by the nodes
107August 2019 Crypto, Bitcoin & Blockchain
Example of The Node
August 2019 Crypto, Bitcoin & Blockchain 108
LEDGER
Processes in Ledgers
109August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
Benefits of Distributed Ledgers
110August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
Type of Distributed Ledgers
111August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
Centralized vs Distributed
112August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
Single Entity vs Multiple
113August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
114August 2019 Crypto, Bitcoin & Blockchain
Example of Ledger
Hyperledger
115August 2019 Crypto, Bitcoin & Blockchain
• An open source collaborative effort created to advance
cross-industry blockchain technologies.
• A global collaboration, hosted by Linux Foundation,
including leaders in finance, banking, IoT, supply chain,
manufacturing, and technology.
• Business Blockchain Frameworks are hosted with
Hyperledger.
Image: Nancy Liao
Hyperledger (cont’d)
116August 2019 Crypto, Bitcoin & Blockchain
• Accommodate cross-industry open standard for distributed
ledgers.
• Some of well-known Hyperledger projects/frameworks:
• Hyperledger Burrow
Permissible smart contract machine with a modular blockchain
client, built in part to the specification of Ethereum Virtual Machine
(EVM)
• Hyperledger Fabric
Foundation for developing plug-n-play solutions within a modular
architecture
Image: Nancy Liao
Hyperledger (cont’d)
117August 2019 Crypto, Bitcoin & Blockchain
• Hyperledger Iroha
Simple and easy blockchain
framework designed to be
incorporated into infrastructure
projects requiring distributed
ledger technology.
• Hyperledger Sawtooth
A modular platform for
building, deploying, and
running distributed ledgers.
Image: Nancy Liao
Leveraging Blockchain Benefits
Session 7
August 2019 Crypto, Bitcoin & Blockchain 118
How Blockchain Benefit Business
119
• Transparency and cryptography add resilience of data
• Audit electronic actions to easily complete forensic
analysis if a hack occurs
• If something was changed, Blockchain would become
invalid at that point and broadcast the error to all
nodes
• Immutable logging and connection of data to create a
tamper-proof chain of data
August 2019 Crypto, Bitcoin & Blockchain
How Blockchain Benefit Business (cont’d)
120
• Immutable data means accurate reporting and
analytics
• Immutability means that it allows any fraud or error to
be identified and corrected, eliminating any single
point of failure and making it easy to have a correct
record of all behaviour at any point in time.
• If a past data entry is tampered, it will make the block
invalid, which both cancels the upcoming transaction
and shows data that was tampered with.
August 2019 Crypto, Bitcoin & Blockchain
How Blockchain Benefit Business (cont’d)
121
• Immutable data means accurate reporting and
analytics
• Immutability means that it allows any fraud or error to
be identified and corrected, eliminating any single
point of failure and making it easy to have a correct
record of all behaviour at any point in time.
• If a past data entry is tampered, it will make the block
invalid, which both cancels the upcoming transaction
and shows data that was tampered with.
August 2019 Crypto, Bitcoin & Blockchain
Blockchain Market Overview
122August 2019 Crypto, Bitcoin & Blockchain
Source: World Economic Forum (WEF) Report, 2017
Note
DLT: Distributed Ledger Technology
August 2019 Crypto, Bitcoin & Blockchain 123
Image: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 124
Image: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 125
Image: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 126Credit: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 127
Credit: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 128
Credit: Melanie Swan
August 2019 Crypto, Bitcoin & Blockchain 129
Credit: Melanie Swan
Potential Applications
130August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
How Bank Benefits from Blockchain
131August 2019 Crypto, Bitcoin & Blockchain
Source: Finextra, Accenture, CoinDesk
How Bank Leveraging Blockchain These Days
132August 2019 Crypto, Bitcoin & Blockchain
• Blockchain transactions are immediately validated and
approved, then settled shortly thereafter, automatically
without a central authority.
• In the these days financial world, cash transactions
only are cleared and settled automatically without a
central authority.
• Financial transactions only take milliseconds to execute,
clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin
133August 2019 Crypto, Bitcoin & Blockchain
Adoption in Banking Pads
Letter of Credit – Use Case
134Crypto, Bitcoin & BlockchainImage: Baltana
As a bank handling letters of credit (LOC) for our clients, we
need a common ledger that allows us and all counter-
parties to have the same validated record of transaction and
fulfilment of conditions.
It’s intended so we can increase trust and speed of
execution from 4 days to <1 day. If we can drive out 99% of
the time and cost, we can offer innovative LOC solutions for
a wider range of clients, including start-ups that are “born
global.
August 2019
August 2019 Crypto, Bitcoin & Blockchain 135
August 2019 Crypto, Bitcoin & Blockchain 136
August 2019 Crypto, Bitcoin & Blockchain 137
Use Case – Financial Services
138August 2019 Crypto, Bitcoin & Blockchain
• Blockchain transactions are immediately validated and
approved, then settled shortly thereafter, automatically
without a central authority.
• In the these days financial world, cash transactions
only are cleared and settled automatically without a
central authority.
• Financial transactions only take milliseconds to execute,
clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin
Source: World Economic Forum
Use Case – Financial Services (cont’d)
139August 2019 Crypto, Bitcoin & Blockchain
• Blockchain transactions are immediately validated and
approved, then settled shortly thereafter, automatically
without a central authority.
• In the these days financial world, cash transactions
only are cleared and settled automatically without a
central authority.
• Financial transactions only take milliseconds to execute,
clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin
Source: World Economic ForumSource: World Economic Forum
Understanding ICO and Smart
Contract
Session 6
August 2019 Crypto, Bitcoin & Blockchain 140
A Sneak Peak on ICO
141
• Initial Coin Offerings as known as Token Sales or Digital
Token
• A fundraising strategy that is fueled by a convergence of
blockchain technology, new wealth, clever entrepreneurs,
and crypto-investors who are backing blockchain-fueled
ideas.
• Dubbed as the Wild West of financing — they sit in a grey
zone where the U.S. SEC and many other regulatory
bodies are still investigating them.
August 2019 Crypto, Bitcoin & Blockchain
A Sneak Peak on ICO (cont’d)
142
• Most ICO’s don’t offer equity in start-up ventures.
• They only offer discounts on cryptocurrencies before they
hit the exchanges.
• Therefore, they are technically outside of traditional legal
frameworks.
• They are global instruments and they are funded using
bitcoin, ether and other cryptocurrencies that are not
controlled by any central authority or bank. Anyone can
invest, and they can even do so pseudo-anonymously.
August 2019 Crypto, Bitcoin & Blockchain
How ICO Works
143
• A new cryptocurrency is created on a protocol such as
Counterparty, Ethereum, or Openledger.
• A value is arbitrarily determined by the startup team
behind the ICO based on what they think the network is
worth at its current stage.
• Then, via price dynamics determined by market supply
and demand, the value is settled on by the network of
participants, rather than by a central authority or
government.
August 2019 Crypto, Bitcoin & Blockchain
Why ICO?
144
• Liquidity of cryptocurrencies
• Rather than investing in a unicorn startup and waiting for
the long play — an IPO or an acquisition — investors can
see gains more quickly, and can pull profits out more
easily, via ICOs.
• They simply need to convert their cryptocurrency profits
into Bitcoin, Ether then it’s easily converted to fiat currency
via online services such as Coinsbank or Coinbase.
August 2019 Crypto, Bitcoin & Blockchain
Success Stories
145
• Cryptocurrency investors made some massive returns
in 2016, with cryptocurrencies from Blockchain
startups Monero and NEM both seeing 2,000%
increases in value.
• The cryptocurrency used for the Ethereum network,
called Ether, saw its value double in just three days in
March 2017.
• They can opt to cash out to a fiat-backed currency or
wait for the crypto to continue to rise (or fall).
August 2019 Crypto, Bitcoin & Blockchain
Ethereum Use Case
146
• When Ethereum did their ICO in 2014, they hold about
10-20% of the total cryptocurrency they issue.
• 20% going to the development fund and the remaining
going to the Ethereum Foundation.
• As of March 2017, the market capitalization of the ether
token was more than $4 billion.
August 2019 Crypto, Bitcoin & Blockchain
ICO in Numbers
147
• More than $270 million has been raised in ICOs since 2013,
according to Smith and Crown.
• Since 2013, there’s been about $2 billion invested in blockchain
and bitcoin startups from the VC community.
• ICOs are becoming more and more popular for start-ups
seeking to get out of self-funding, bootstrapping starvation mode
and avoid being locked in by venture capitalists, watching their
own equity drown in a sea of financing rounds.
• ICOs are dominating the overall crowdfunding charts in
• terms of funds raised, with half of the top 20 raises coming from
the crypto-community.
August 2019 Crypto, Bitcoin & Blockchain
Challenges and Opportunities
148
• No Anti-Money Laundering (AML) law or Know Your
Customer (KYC) framework, though some companies are
working on that.
• For blockchain startups, ICOs are a win-win — they allow
start-ups to raise funds without having equity stakeholders
breathing down their necks on spending, prioritizing
financial returns over product/service itself.
• ICOs are a long-awaited solution for non-profit
foundations that want to build open-source software to
raise capital.
August 2019 Crypto, Bitcoin & Blockchain
Smart Contract
149
• Agreements between parties posted to the blockchain
for automated execution.
• Examples
Bet on high temperature tomorrow
Mortgage with automatic interest-rate resets
• Code: Ethereum and Eris
https://github.com/ethereum/
https://erisindustries.com/
August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
Example of Smart Contract
150August 2019 Crypto, Bitcoin & Blockchain
Image: Deloitte UK Report 2016
Fingerprint and Time Stamp
151
• A file mostly Digital Certificate and Digital
Signature could be hashed to producing a short
unique identifier namely (Digital) Fingerprint.
• Such a fingerprint can be associated to a bitcoin
transaction (regardless to the amount) and hence
registered on the blockchain.
• Blockchain provides non-repudiation time-stamp, no
need for us to implement Time Stamp Server or get
connected to Time Stamp Authority (TSA).
August 2019 Crypto, Bitcoin & Blockchain
Digital Fingerprint
152
• Application is related to digital media files.
• Helps a user locate a specific file to verify whether a
file has been altered, while actually facilitating
copyright protection.
• This involves using a fingerprint identifier/ID to
conduct protected file searches for other online file
instances.
August 2019 Crypto, Bitcoin & Blockchain
153August 2019 Crypto, Bitcoin & Blockchain
Notarization
154
• The time stamp from third party organization act as
Online Notaria proving the existence of data file in
that specific status at that moment in time.
• This generic process is even undergoing some
standardization to achieve third party auditable
verification: broker-dealers could use it to satisfy
regulatory compliance.
August 2019 Crypto, Bitcoin & Blockchain
Final Q & A
Crypto, Bitcoin & BlockchainImage: Capitoltimes 155
Thank You!
August 2019 Crypto, Bitcoin & Blockchain
Looking forward to catching up with you again soon
Image: Samfouladgar 156

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Crypto Currency, Bitcoin and Blockchain

  • 1. Crypto Currency, Bitcoin and Blockchain Developed and Facilitated by Goutama Bachtiar Image: BankRate v1.1.5 Goutama Bachtiar Digitally signed by Goutama Bachtiar Date: 2019.09.11 01:31:48 +07'00'
  • 3. August 2019Crypto, Bitcoin & Blockchain Image: VideoBlocks 3
  • 4. Course Agenda Session 1: Cryptography: Concept and Technology Session 2: Exploring Crypto Currency Session 3: Blockchain and Distributed Ledger Session 4: Bringing Bitcoin Further August 2019Crypto, Bitcoin & Blockchain Image: Benziga 4
  • 5. Course Agenda (cont’d)  Session 5: Moving Blockchain Forward  Session 6: Leveraging Blockchain Benefits  Session 7: Understanding ICO and Smart Contract August 2019Crypto, Bitcoin & Blockchain Image: Picstatio 5
  • 6. ▪ 09.00AM – 10.20AM: 1st Session ▪ 10.20AM – 10.40AM: 1st Coffee Break ▪ 10.40AM – 12.00PM: 2nd Session ▪ 12.00PM – 01.10PM: Lunch Time & Pray ▪ 01.10PM – 03.00PM: 3rd Session ▪ 03.00PM – 03.20PM: 2nd Coffee Break ▪ 03.20PM – 05.00PM: 4th Session August 2019 Crypto, Bitcoin & Blockchain Our Schedule Image: InsiteCommercial 6
  • 7. Cryptography: Concept and Technology Session 1 Crypto, Bitcoin & Blockchain 7
  • 8. The concept and practice of “hiding” and “unhiding” information. How? By encapsulating a plain text/data into an unmeaningful data and then retransforming it into its original form. The Objective? To provide Confidentiality, Integrity, Accuracy. August 2019 Crypto, Bitcoin & Blockchain What Cryptography Is? Image: Wall2born 8
  • 9. Encryption The process of converting plain text into an unintelligible format (or known as cipher text) Decryption The process of converting chipper text into plain text August 2019 Crypto, Bitcoin & Blockchain Encryption vs Decryption Image: Wall2born 9
  • 10. August 2019 Crypto, Bitcoin & Blockchain Encryption vs Decryption (cont’d) Image: Wall2born 10
  • 11. Symmetric Key Known as Secret Key. Same key is utilized by both parties. The key must be kept secret by them Pros Simpler. Faster. Cons Less secured. August 2019 Crypto, Bitcoin & Blockchain Type of Cryptography Image: Wall2born 11
  • 12. Asymmetric Key Known as Public Key. 2 different keys per user. Public key shall be made public, while private key shall be privately maintained. Pros More secured. Cons Relatively complex. August 2019 Crypto, Bitcoin & Blockchain Type of Cryptography (cont’d) Image: Wall2born 12
  • 13. Asymmetric Key Same key is utilized by both parties Pros Simpler. Faster. Cons Less secured. August 2019 Crypto, Bitcoin & Blockchain Type of Cryptography (cont’d) Image: Wall2born 13
  • 14. A variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message. August 2019 Crypto, Bitcoin & Blockchain What is a Key Image: Wall2born 14
  • 15. Message Digest Functions - Protect integrity - Create a message digest or fingerprint of a digital document - Example: MD4, MD5, SHA Message Authentication Codes (MACs) - Protect both integrity and authenticity - Produce fingerprints based on both a given document and a secret (private) key August 2019 Crypto, Bitcoin & Blockchain Hash Function Image: Wall2born 15
  • 16. SHA-0 1993 SHA-1 1995 A set of cryptographic hash functions designed by the United States National Security Agency (NSA). SHA-2 2001 SHA-2 family consists of six hash functions with digests (hash values): 224, 256, 384 or 512 bits: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256. Published in 2001 by National Institute of Standards and Technology (NIST), a U.S. Federal Standard (FIPS). August 2019 Crypto, Bitcoin & Blockchain Secure Hash Algorithm (SHA) Image: Wall2born 16
  • 17. Exploring Crypto Currency Session 2 August 2019 Crypto, Bitcoin & Blockchain 17
  • 18. Digital Currency • Part of E-Cash or E-Money known as Virtual Currency • Bitcoin is the first decentralized, crypto digital/virtual currency • Peer-to-Peer currency with mathematic protection • No centralized control/Central Bank • Based on cryptographic proof (SHA256) instead of trust • Developed by a person/group under pseudonym of Satoshi Nakamoto (2008) • Operational since early 2009 • No financial institutions involved or managed August 2019 Crypto, Bitcoin & Blockchain 18
  • 19. Digital Currency (cont’d) Example of Digital/Virtual Currency centralized and not crypto: https://koinworks.com/lender?locale=id August 2019 Crypto, Bitcoin & Blockchain 19
  • 20. The First Crypto Currency 20 •It was Bitcoin (BTC) •A maximum of 21 million Bitcoins can be generated •The Satoshi is the smallest unit of bitcoin recorded on blockchain (it's a one hundred millionth of a single bitcoin (0.00000001 BTC) •https://www.cryptocoincharts.info/coins/info claims to be indexing 4,220 cryptocurrencies •Bitcoin is one of the Blockchain digital assets. •Most circulated: Bitcoin, Ethereum, Litecoin August 2019 Crypto, Bitcoin & Blockchain
  • 21. Bitcoin’s Key Concepts August 2019 Crypto, Bitcoin & Blockchain Bitcoins Transactions Proof of Work Mining Digital Wallet 21
  • 22. BTC Transactions • Straight away between owner and receiver • Broadcasted through Peer-to-Peer (P2P) network • All are public but anonymous • Mining nodes collects the transactions into Blocks August 2019 Crypto, Bitcoin & Blockchain 22
  • 23. BTC Transactions (cont’d) • Transactions Blocks  Full page in a Ledger Book • Block contains information about transactions and previous Block (Block Chain) linking to the first block when Bitcoin Network started. August 2019 Crypto, Bitcoin & Blockchain 23
  • 24. Bitcoin Advantages • BTC software unchangeable without majority users within entire network accepting the change • While majority of nodes are honest, attackers cannot harm the system • Attacker would need astronomical computer power to corrupt block chain • No government can print more money • Anonymity • Lower global transaction costs • New bubble may emerge (?): Oct13 = USD150 while Nov13 is more than USD500 • March 2013: BTC passed 1 Billion USD (around 11 million Bitcoins in circulation) August 2019 Crypto, Bitcoin & Blockchain 24
  • 25. August 2019 Crypto, Bitcoin & Blockchain Image: Deloitte UK Report 2016 25
  • 26. Technology Behind Bitcoin 26 •Think of Bitcoin as an electronic asset other than digital, crypto currency •A network of computers keeps track of Bitcoin payments and adds them to an ever-growing list of them which have been made, called “The Bitcoin Blockchain”. •The file that contains data about all Bitcoin transactions is often called a “ledger”. August 2019 Crypto, Bitcoin & Blockchain
  • 27. Technology Behind Bitcoin (cont’d) 27 •Bitcoin value is created through transaction processing, referred to as “mining”. •Mining is performed by distributed processors called “nodes” of the peer-to-peer network. •Blockchain without digital asset in this case crypto currency? NO. August 2019 Crypto, Bitcoin & Blockchain
  • 28. Technology Behind Bitcoin (cont’d) 28 •Bitcoin value is created through transaction processing, referred to as “mining”. •Mining is performed by distributed processors called “nodes” of the peer-to-peer network. •Blockchain without digital asset in this case crypto currency? NO. August 2019 Crypto, Bitcoin & Blockchain
  • 29. Ethereum 29 A decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud, or third- party interference. The Ethereum project was bootstrapped via an ether pre-sale during August 2014. The project is developed by Ethereum Foundation, a Swiss nonprofit, with contributions from individuals and organizations across the globe. August 2019 Crypto, Bitcoin & Blockchain
  • 30. Ethereum Components 30 • Ethereum Wallet A gateway to decentralized applications on Ethereum blockchain, allowing users to hold and secure ether and other crypto- assets built on Ethereum, as well as write, deploy and use smart contracts. • Design and issue your own cryptocurrency/traceable token • Kickstart a project with CrowdSale August 2019 Crypto, Bitcoin & Blockchain
  • 31. Enterprise Ethereum Alliance 31 Permissioned Blockchain August 2019 Crypto, Bitcoin & Blockchain
  • 32. Ether 32 • The crypto-fuel for Ethereum network. • A form of payment made by clients of platform to machines executing requested operations, functioning as incentive to ensure that developers will write quality applications, and network remains healthy. • Developers who intend to build apps that will use the Ethereum blockchain need ether. • Users who want to access and interact with smart contracts on Ethereum blockchain also need ether. August 2019 Crypto, Bitcoin & Blockchain
  • 33. How was Ether Created? 33 • Total supply and its rate of issuance was decided by donations on 2014 presale. • 60 million ether created to contributors of the presale. • 12 Million (20% of the above) were created to the development fund. • 3 ethers are created every block (roughly 15 seconds) to the miner of the block. • 0.625-2.625 ethers are sometimes sent to another miner if they were also able to find a solution. August 2019 Crypto, Bitcoin & Blockchain
  • 34. Ethstats.net 34 Statistics of Ethereum nodes on public Ethereum Blockchain August 2019 Crypto, Bitcoin & Blockchain
  • 35. Blockchain and Distributed Ledger Session 3 August 2019 Crypto, Bitcoin & Blockchain 35
  • 36. What is Blockchain? 36 • A technology that permits transactions to be gathered into blocks and recorded. • Allows the resulting ledger to be accessed by different servers. • Cryptographically chains blocks in chronological order. • First introduced in whitepaper “Bitcoin: A Peer-to-Peer Electronic Cash System,” by Satoshi Nakamoto in 2008. August 2019 Crypto, Bitcoin & Blockchain
  • 37. What is Blockchain? (cont’d) 37 • A Distributed Transaction Ledger • Every block contains multiple transactions • Massively duplicated across network nodes • Shared with a P2P file transfer protocol • All network nodes perform transaction validation and clearing. • Updated by peculiar nodes, known as miners, appending new blocks of transactions • Miners perform the additional work required for settlement. August 2019 Crypto, Bitcoin & Blockchain
  • 38. What is Blockchain? (cont’d) 38 Whilst Bitcoin themselves: • No reliance on trust • Digital signatures • Peer-to-peer network • Proof-of-work • Public history of transactions • Honest, independent nodes control majority of CPU computing power • Nodes vote with CPU computing power • Rules and incentives enforced through consensus mechanism August 2019 Crypto, Bitcoin & Blockchain
  • 39. What is Blockchain? (cont’d) 39 To imagine: “Giant interactive Google doc spreadsheet that anyone can view and administrators (miners) continually verify and update to confirm that each transaction is valid” August 2019 Crypto, Bitcoin & Blockchain
  • 40. Distributed Ledger 40August 2019 Crypto, Bitcoin & Blockchain
  • 41. Ledger 41August 2019 Crypto, Bitcoin & Blockchain • A Ledger of Transactions stored as Immutable Blocks. • Blocks are connected to one another hence forming a Chain. • The validity of which has been agreed upon by Peers on a Decentralised network secured by Cryptography. • Whilst Shared Ledger is:
  • 42. The Components 42August 2019 Crypto, Bitcoin & Blockchain • Node: refers to client who owns the block. • Transaction: Transfer of something from A to B. • Block: Bundle of transactions. • Miners: Burns effort, time and energy to create blocks, therefore get rewarded by Block Reward + Transaction Fees. • Block Reward: New coins created with each block, goes to miner. • Transaction Fees: Small percentage of transaction value, which goes to the miner. • Mining: process by which blocks are created, transactions are verified and added to blockchain.
  • 43. The Node 43August 2019 Crypto, Bitcoin & Blockchain • A client, which owns the block. • A copy of the ledger operated by a participant of the blockchain network. • Contains one or more than one account. • Miner (Account) mines on the specific node to whom they belongs.
  • 44. The Block 44August 2019 Crypto, Bitcoin & Blockchain • Bundle of Transactions. • Contains previous block hash. • All blocks are linked using their hash. • Data can’t be changed in one block without breaking the chain.
  • 45. Cryptography 45August 2019 Crypto, Bitcoin & Blockchain Initiation and Broadcasting of Transaction ▪ Digital Signature ▪ Private and Public Keys Validation of Transaction Proof of Work and Certain Alternatives Chaining Blocks Hash Functions
  • 46. Public Key 46August 2019 Crypto, Bitcoin & Blockchain • A large numerical value used to encrypt data/file/message. • Encrypted file is intended for a particular recipient, and it could be decrypted only by using the second key known only to the recipient (the private key). Therefore the sender must know the recipient public key, encrypted the file with that key and sent it to his/her. He/she receives and decrypt it with his/her own private key. • Can be generated by a software, website, or provided by several organization, Certificate of Authority (CA) for instance. • Made available to everyone by telling others or through a publicly accessible repository/directory service or server.
  • 47. Example of Public Key 47August 2019 Crypto, Bitcoin & Blockchain
  • 48. Private Key 48August 2019 Crypto, Bitcoin & Blockchain • A large numerical value that is mathematically linked to the public key. • Whatever is encrypted with a Public Key may only be decrypted by its corresponding Private Key and vice versa. • Can be generated by a software, website, or provided by several organization, Certificate of Authority (CA) for instance. • Shall be kept securely and privately by the owner/holder. • Symmetric/Private Key encryption uses the same private/secret key for both encryption and decryption whilst asymmetric/public key encryption uses two linked keys and required higher computing resources.
  • 49. Example of Private Key 49August 2019 Crypto, Bitcoin & Blockchain
  • 50. Digital Signature 50August 2019 Crypto, Bitcoin & Blockchain
  • 51. August 2019 Crypto, Bitcoin & Blockchain 51 • Owner (subscriber/sender) name • A Serial Number (unique; generated by CA) • Expiration date • A copy of certificate holder’s Public Key (utilized for encrypting messages and digital signatures) • Digital Signature of CAs so a recipient/second party can verify the certificate is real. • Standards: X.509, PKI X.509 and Public Key Cryptography Standards (PKCS). Digital Certificate
  • 52. Proof of Work 52August 2019 Crypto, Bitcoin & Blockchain • A system that ties mining capability to computational power. • When a block is successfully hashed, the hashing must have taken some time and computational effort • Hashed block is considered proof of work. • In other words, transaction is confirmed in the blockchain. • Done by the node/miners.
  • 53. Hash Function 53August 2019 Crypto, Bitcoin & Blockchain • A hexadecimal code used SHA-256 • Blockchain uses Cryptographic Hash Function. It takes any string as input Fixed-size of output (256 bits) Efficiently Computable Security Properties (Collision free, Hiding and Puzzle friendly)
  • 54. Distributed Consensus 54 • Satoshi Nakamoto reaches consensus using game theory in this case economic incentive for mining nodes to be honest and do as they are expected. • Miners are compensated for their proof-of-work (validating, settling and clearing transaction) using seigniorage revenues, i.e. with issuance of new bitcoins. August 2019 Crypto, Bitcoin & Blockchain
  • 55. How Blockchain Works 55 • A participant is a member of a network – Customer, Supplier, Government, Regulator – Have specific identities and roles • A transaction is an asset transfer between two or more participants: – John gives a car to Anthony (simple) – John gives a car to Anthony, Anthony gives money to John (more complex) • A contract is set of conditions under which transactions occur: – If Anthony pays John money, then car passes from John to Anthony (simple) – If car won't start, funds do not pass to John (as decided by independent third party arbitrator) August 2019 Crypto, Bitcoin & Blockchain
  • 56. How Blockchain Works (cont’d) 56August 2019 Crypto, Bitcoin & Blockchain
  • 57. How Blockchain Works (cont’d) August 2019 Crypto, Bitcoin & Blockchain 57
  • 58. Therefore, the Blockchain 58August 2019 Crypto, Bitcoin & Blockchain
  • 59. August 2019 Crypto, Bitcoin & Blockchain 59 Image: Deloitte UK Report 2016Image: Blockchain.info October 2018
  • 60. Blockchain in a Nutshell 60August 2019 Crypto, Bitcoin & Blockchain Broader participation, increased efficiency and lowered cost
  • 61. Three Major Usage 61 1. Storing digital records 2. Exchanging digital assets (digital, crypto currency as known as token) 3. Executing Smart Contracts i. Ground rules: Terms & conditions recorded in code. ii. Distributed network executes contract and monitors compliance. iii. Outcomes are automatically validated without third-party individual or organization. August 2019 Crypto, Bitcoin & Blockchain
  • 62. August 2019 Crypto, Bitcoin & Blockchain 62Image: IBM
  • 63. Blockchain Networks 63August 2019 Crypto, Bitcoin & Blockchain • Public (Permissionless Blockchains) Example: Bitcoin, Ethereum, Litecoin • Private (Permissioned Blockchains) Example: Multichain, Monax • Consortium Blockchains Example: R3, EWF, Corda
  • 64. Blockchain Networks (cont’d) 64August 2019 Crypto, Bitcoin & Blockchain Image: CoinDesk Consensus Q1 2017 Report
  • 65. Global Fintech Landscape 65August 2019 Crypto, Bitcoin & Blockchain
  • 66. Bringing Bitcoin Further Session 4 August 2019 Crypto, Bitcoin & Blockchain 66
  • 67. Mining Revolution 67 Bitcoins are generated in blocks. Nowadays one block is mined every 10 minutes (144 blocks/day) One block is, at the moment,12.5 BTC Reward will be distributed depending on the miner’s hash rate Hash rate is the rate your mining hardware performing as reported by your miner software or from an estimate obtained from mining hardware comparison tables BTC generation will stop at 2140 (around 21 million) Block reward started at 50 BTC in block #1 and halves every 210,000 blocks. August 2019 Crypto, Bitcoin & Blockchain
  • 68. Mining Revolution (cont’d) • ASIC (Application Specific Integrated Circuit) has been designed strictly for mining BTC. • Groups of miners have formed mining pools, with each being paid their relative share for their contribution to the work performed. • After 2140 the incentive will be only the transaction fee. • Around 17 million BTC in existence — only 4 million left to 'mine’. • When hitting 21 million, the blocks will still be created as long as people are trading it. August 2019 Crypto, Bitcoin & Blockchain 68
  • 69. Bitcoin Mining Pools Ranked based on the hash power controlled by a pool: 1. AntPool (25.2%) 2. BTC.TOP (11.2%) 3. BTC.com (10.2%) 4. Bixin (8.1%) 5. BTCC Pool (7.3%) 6. F2Pool (5.4%) 7. ViaBTC (5%) 8. BW.COM (5%) 9. BitClub Network (4.8%) 10.Bitcoin.com (3%) August 2019 Crypto, Bitcoin & Blockchain 69
  • 70. Token In Details 70 • Can be defined as “scarce digital asset based on underlying technology inspired by Bitcoin.” • Ethereum was Bitcoin-inspired but has its own blockchain and more programmable. • Tokens can be issued on top of Ethereum blockchain. • Token buyers are buying private keys and can be transferred to other parties without consent. August 2019 Crypto, Bitcoin & Blockchain
  • 71. Token In Details (cont’d) 71 • Have a value and therefore a price. • Do not dilute capital. They introduce a huge increase to buyer base and time-to-liquidity. • Can be issued as a way to share profits. • Can be sold internationally over internet and are always open for business. • Decentralize process of funding technology. • Accommodate immediate custody without intermediary. August 2019 Crypto, Bitcoin & Blockchain
  • 72. Trading Platform and Exchange (cont’d) • BTC-e Digital currency trading platform and exchange Founded in July 2011, HQ in Russia As of Feb15 handles 2.5% all Bitcoin exchange volume Allows trading between currencies USD, RUR and EUR, and cryptocurrencies Bitcoin, Litecoin, Namecoin, Novacoin, and Peercoin Been component of CoinDesk Bitcoin Price Index (Sep13) August 2019 Crypto, Bitcoin & Blockchain 72
  • 73. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain 73
  • 74. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain 74
  • 75. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain Image courtesy of wikipedia.org 75
  • 76. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain Image courtesy of wikipedia.org 76
  • 77. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain Image courtesy of wikipedia.org 77
  • 78. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain Image courtesy of wikipedia.org 78
  • 79. Trading Platform and Exchange (cont’d) August 2019 Crypto, Bitcoin & Blockchain Image courtesy of wikipedia.org 79
  • 80. Bitcoin’s Blockchain Stats 80 Summary of bitcoin statistics for the previous 24-hour period from Blockchain.info August 2019 Crypto, Bitcoin & Blockchain
  • 81. Bitcoin’s Blockchain Stats 81 Summary of bitcoin statistics for the previous 24-hour period from Blockchain.info August 2019 Crypto, Bitcoin & Blockchain
  • 82. How to Store Crypto 82August 2019 Crypto, Bitcoin & Blockchain Ledger Nano S Ledger Blue
  • 83. How to Store Crypto (cont’d) 83August 2019 Crypto, Bitcoin & Blockchain
  • 84. August 2019 Crypto, Bitcoin & Blockchain How to Store Crypto (cont’d) 84
  • 85. August 2019 Crypto, Bitcoin & Blockchain How to Store Crypto (cont’d) 85
  • 86. Bitcoin Challenges August 2019 Crypto, Bitcoin & Blockchain 86
  • 87. Bitcoin Challenges (cont’d) August 2019 Crypto, Bitcoin & Blockchain 87
  • 88. August 2019 Crypto, Bitcoin & Blockchain 88
  • 89. August 2019 Crypto, Bitcoin & Blockchain 89
  • 90. Moving Blockchain Forward Session 5 August 2019 Crypto, Bitcoin & Blockchain 90
  • 91. August 2019 Crypto, Bitcoin & Blockchain 91 TRANSACTION
  • 92. Elements of Transaction 92August 2019 Crypto, Bitcoin & Blockchain
  • 93. Example of Transaction 93August 2019 Crypto, Bitcoin & Blockchain Receiving BTC in Blockchain.info Wallet Receiving BTC in Blockchain.info Wallet Local time when BTC received by the wallet The sender’s ‘Send’ Wallet ID The receiver’s ‘Receive’ Wallet ID (hashed)
  • 94. Example of Transaction (cont’d) 94August 2019 Crypto, Bitcoin & Blockchain Receiving BTC in Blockchain.info Wallet Status of Transaction Confirmation time between minutes until hours URL of the Transaction The sender’s ‘Send’ Wallet ID
  • 95. Example of Transaction (cont’d) 95August 2019 Crypto, Bitcoin & Blockchain
  • 96. August 2019 Crypto, Bitcoin & Blockchain 96 BLOCK
  • 97. Visualization 97August 2019 Crypto, Bitcoin & Blockchain Inclusive of Block creation time
  • 98. 98August 2019 Crypto, Bitcoin & Blockchain Example of Block Current Block
  • 99. 99August 2019 Crypto, Bitcoin & Blockchain Example of Block (cont’d) Previous Block
  • 100. 100August 2019 Crypto, Bitcoin & Blockchain Example of Block (cont’d) Next Block
  • 101. 101August 2019 Crypto, Bitcoin & Blockchain Example of Transactions Inside the Block
  • 102. 102August 2019 Crypto, Bitcoin & Blockchain Example of The Largest Transaction
  • 103. 103August 2019 Crypto, Bitcoin & Blockchain Example of Unconfirmed Transaction
  • 104. 104August 2019 Crypto, Bitcoin & Blockchain Example of Strange Transaction Transactions containing outputs from which were unable to decode a bitcoin address
  • 105. Detached/Orphaned Block 105 • Valid blocks which are not part of the main chain. • They can occur naturally when: ▪ Two miners produce blocks at similar times ▪ Caused by an attacker with enough hashing power attempting to reverse transactions. August 2019 Crypto, Bitcoin & Blockchain
  • 106. 106August 2019 Crypto, Bitcoin & Blockchain Rejected Inventory Transactions and blocks which have been rejected by the nodes
  • 107. 107August 2019 Crypto, Bitcoin & Blockchain Example of The Node
  • 108. August 2019 Crypto, Bitcoin & Blockchain 108 LEDGER
  • 109. Processes in Ledgers 109August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
  • 110. Benefits of Distributed Ledgers 110August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
  • 111. Type of Distributed Ledgers 111August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
  • 112. Centralized vs Distributed 112August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
  • 113. Single Entity vs Multiple 113August 2019 Crypto, Bitcoin & BlockchainImage: Nancy Liao
  • 114. 114August 2019 Crypto, Bitcoin & Blockchain Example of Ledger
  • 115. Hyperledger 115August 2019 Crypto, Bitcoin & Blockchain • An open source collaborative effort created to advance cross-industry blockchain technologies. • A global collaboration, hosted by Linux Foundation, including leaders in finance, banking, IoT, supply chain, manufacturing, and technology. • Business Blockchain Frameworks are hosted with Hyperledger. Image: Nancy Liao
  • 116. Hyperledger (cont’d) 116August 2019 Crypto, Bitcoin & Blockchain • Accommodate cross-industry open standard for distributed ledgers. • Some of well-known Hyperledger projects/frameworks: • Hyperledger Burrow Permissible smart contract machine with a modular blockchain client, built in part to the specification of Ethereum Virtual Machine (EVM) • Hyperledger Fabric Foundation for developing plug-n-play solutions within a modular architecture Image: Nancy Liao
  • 117. Hyperledger (cont’d) 117August 2019 Crypto, Bitcoin & Blockchain • Hyperledger Iroha Simple and easy blockchain framework designed to be incorporated into infrastructure projects requiring distributed ledger technology. • Hyperledger Sawtooth A modular platform for building, deploying, and running distributed ledgers. Image: Nancy Liao
  • 118. Leveraging Blockchain Benefits Session 7 August 2019 Crypto, Bitcoin & Blockchain 118
  • 119. How Blockchain Benefit Business 119 • Transparency and cryptography add resilience of data • Audit electronic actions to easily complete forensic analysis if a hack occurs • If something was changed, Blockchain would become invalid at that point and broadcast the error to all nodes • Immutable logging and connection of data to create a tamper-proof chain of data August 2019 Crypto, Bitcoin & Blockchain
  • 120. How Blockchain Benefit Business (cont’d) 120 • Immutable data means accurate reporting and analytics • Immutability means that it allows any fraud or error to be identified and corrected, eliminating any single point of failure and making it easy to have a correct record of all behaviour at any point in time. • If a past data entry is tampered, it will make the block invalid, which both cancels the upcoming transaction and shows data that was tampered with. August 2019 Crypto, Bitcoin & Blockchain
  • 121. How Blockchain Benefit Business (cont’d) 121 • Immutable data means accurate reporting and analytics • Immutability means that it allows any fraud or error to be identified and corrected, eliminating any single point of failure and making it easy to have a correct record of all behaviour at any point in time. • If a past data entry is tampered, it will make the block invalid, which both cancels the upcoming transaction and shows data that was tampered with. August 2019 Crypto, Bitcoin & Blockchain
  • 122. Blockchain Market Overview 122August 2019 Crypto, Bitcoin & Blockchain Source: World Economic Forum (WEF) Report, 2017 Note DLT: Distributed Ledger Technology
  • 123. August 2019 Crypto, Bitcoin & Blockchain 123 Image: Melanie Swan
  • 124. August 2019 Crypto, Bitcoin & Blockchain 124 Image: Melanie Swan
  • 125. August 2019 Crypto, Bitcoin & Blockchain 125 Image: Melanie Swan
  • 126. August 2019 Crypto, Bitcoin & Blockchain 126Credit: Melanie Swan
  • 127. August 2019 Crypto, Bitcoin & Blockchain 127 Credit: Melanie Swan
  • 128. August 2019 Crypto, Bitcoin & Blockchain 128 Credit: Melanie Swan
  • 129. August 2019 Crypto, Bitcoin & Blockchain 129 Credit: Melanie Swan
  • 130. Potential Applications 130August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
  • 131. How Bank Benefits from Blockchain 131August 2019 Crypto, Bitcoin & Blockchain Source: Finextra, Accenture, CoinDesk
  • 132. How Bank Leveraging Blockchain These Days 132August 2019 Crypto, Bitcoin & Blockchain • Blockchain transactions are immediately validated and approved, then settled shortly thereafter, automatically without a central authority. • In the these days financial world, cash transactions only are cleared and settled automatically without a central authority. • Financial transactions only take milliseconds to execute, clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin
  • 133. 133August 2019 Crypto, Bitcoin & Blockchain Adoption in Banking Pads
  • 134. Letter of Credit – Use Case 134Crypto, Bitcoin & BlockchainImage: Baltana As a bank handling letters of credit (LOC) for our clients, we need a common ledger that allows us and all counter- parties to have the same validated record of transaction and fulfilment of conditions. It’s intended so we can increase trust and speed of execution from 4 days to <1 day. If we can drive out 99% of the time and cost, we can offer innovative LOC solutions for a wider range of clients, including start-ups that are “born global. August 2019
  • 135. August 2019 Crypto, Bitcoin & Blockchain 135
  • 136. August 2019 Crypto, Bitcoin & Blockchain 136
  • 137. August 2019 Crypto, Bitcoin & Blockchain 137
  • 138. Use Case – Financial Services 138August 2019 Crypto, Bitcoin & Blockchain • Blockchain transactions are immediately validated and approved, then settled shortly thereafter, automatically without a central authority. • In the these days financial world, cash transactions only are cleared and settled automatically without a central authority. • Financial transactions only take milliseconds to execute, clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin Source: World Economic Forum
  • 139. Use Case – Financial Services (cont’d) 139August 2019 Crypto, Bitcoin & Blockchain • Blockchain transactions are immediately validated and approved, then settled shortly thereafter, automatically without a central authority. • In the these days financial world, cash transactions only are cleared and settled automatically without a central authority. • Financial transactions only take milliseconds to execute, clear and settle rather than in days.Source: CoinDesk, McKinsey, Bitcoin Source: World Economic ForumSource: World Economic Forum
  • 140. Understanding ICO and Smart Contract Session 6 August 2019 Crypto, Bitcoin & Blockchain 140
  • 141. A Sneak Peak on ICO 141 • Initial Coin Offerings as known as Token Sales or Digital Token • A fundraising strategy that is fueled by a convergence of blockchain technology, new wealth, clever entrepreneurs, and crypto-investors who are backing blockchain-fueled ideas. • Dubbed as the Wild West of financing — they sit in a grey zone where the U.S. SEC and many other regulatory bodies are still investigating them. August 2019 Crypto, Bitcoin & Blockchain
  • 142. A Sneak Peak on ICO (cont’d) 142 • Most ICO’s don’t offer equity in start-up ventures. • They only offer discounts on cryptocurrencies before they hit the exchanges. • Therefore, they are technically outside of traditional legal frameworks. • They are global instruments and they are funded using bitcoin, ether and other cryptocurrencies that are not controlled by any central authority or bank. Anyone can invest, and they can even do so pseudo-anonymously. August 2019 Crypto, Bitcoin & Blockchain
  • 143. How ICO Works 143 • A new cryptocurrency is created on a protocol such as Counterparty, Ethereum, or Openledger. • A value is arbitrarily determined by the startup team behind the ICO based on what they think the network is worth at its current stage. • Then, via price dynamics determined by market supply and demand, the value is settled on by the network of participants, rather than by a central authority or government. August 2019 Crypto, Bitcoin & Blockchain
  • 144. Why ICO? 144 • Liquidity of cryptocurrencies • Rather than investing in a unicorn startup and waiting for the long play — an IPO or an acquisition — investors can see gains more quickly, and can pull profits out more easily, via ICOs. • They simply need to convert their cryptocurrency profits into Bitcoin, Ether then it’s easily converted to fiat currency via online services such as Coinsbank or Coinbase. August 2019 Crypto, Bitcoin & Blockchain
  • 145. Success Stories 145 • Cryptocurrency investors made some massive returns in 2016, with cryptocurrencies from Blockchain startups Monero and NEM both seeing 2,000% increases in value. • The cryptocurrency used for the Ethereum network, called Ether, saw its value double in just three days in March 2017. • They can opt to cash out to a fiat-backed currency or wait for the crypto to continue to rise (or fall). August 2019 Crypto, Bitcoin & Blockchain
  • 146. Ethereum Use Case 146 • When Ethereum did their ICO in 2014, they hold about 10-20% of the total cryptocurrency they issue. • 20% going to the development fund and the remaining going to the Ethereum Foundation. • As of March 2017, the market capitalization of the ether token was more than $4 billion. August 2019 Crypto, Bitcoin & Blockchain
  • 147. ICO in Numbers 147 • More than $270 million has been raised in ICOs since 2013, according to Smith and Crown. • Since 2013, there’s been about $2 billion invested in blockchain and bitcoin startups from the VC community. • ICOs are becoming more and more popular for start-ups seeking to get out of self-funding, bootstrapping starvation mode and avoid being locked in by venture capitalists, watching their own equity drown in a sea of financing rounds. • ICOs are dominating the overall crowdfunding charts in • terms of funds raised, with half of the top 20 raises coming from the crypto-community. August 2019 Crypto, Bitcoin & Blockchain
  • 148. Challenges and Opportunities 148 • No Anti-Money Laundering (AML) law or Know Your Customer (KYC) framework, though some companies are working on that. • For blockchain startups, ICOs are a win-win — they allow start-ups to raise funds without having equity stakeholders breathing down their necks on spending, prioritizing financial returns over product/service itself. • ICOs are a long-awaited solution for non-profit foundations that want to build open-source software to raise capital. August 2019 Crypto, Bitcoin & Blockchain
  • 149. Smart Contract 149 • Agreements between parties posted to the blockchain for automated execution. • Examples Bet on high temperature tomorrow Mortgage with automatic interest-rate resets • Code: Ethereum and Eris https://github.com/ethereum/ https://erisindustries.com/ August 2019 Crypto, Bitcoin & BlockchainImage: Baltana
  • 150. Example of Smart Contract 150August 2019 Crypto, Bitcoin & Blockchain Image: Deloitte UK Report 2016
  • 151. Fingerprint and Time Stamp 151 • A file mostly Digital Certificate and Digital Signature could be hashed to producing a short unique identifier namely (Digital) Fingerprint. • Such a fingerprint can be associated to a bitcoin transaction (regardless to the amount) and hence registered on the blockchain. • Blockchain provides non-repudiation time-stamp, no need for us to implement Time Stamp Server or get connected to Time Stamp Authority (TSA). August 2019 Crypto, Bitcoin & Blockchain
  • 152. Digital Fingerprint 152 • Application is related to digital media files. • Helps a user locate a specific file to verify whether a file has been altered, while actually facilitating copyright protection. • This involves using a fingerprint identifier/ID to conduct protected file searches for other online file instances. August 2019 Crypto, Bitcoin & Blockchain
  • 153. 153August 2019 Crypto, Bitcoin & Blockchain
  • 154. Notarization 154 • The time stamp from third party organization act as Online Notaria proving the existence of data file in that specific status at that moment in time. • This generic process is even undergoing some standardization to achieve third party auditable verification: broker-dealers could use it to satisfy regulatory compliance. August 2019 Crypto, Bitcoin & Blockchain
  • 155. Final Q & A Crypto, Bitcoin & BlockchainImage: Capitoltimes 155
  • 156. Thank You! August 2019 Crypto, Bitcoin & Blockchain Looking forward to catching up with you again soon Image: Samfouladgar 156