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The views expressed in this
presentation are Mere Apne.
Reference to any specific products,
process ,or service do not
necessarily constitute or imply
endorsement, recommendation, or
views of Min of Def or any Govt
All images used are for illustrative
purposes only & Do not
promote any specific product
OVERVIEW
WHY,HOW,WHERE
WHO’S WHO?
TECHNOLOGY
CASE STUDY
JAI HINDH
SUMMARY
Name used by the unknown person
or persons who designed BITCOIN
and created its original reference
implementation
SATOSHI NAKAMOTO
Kahan Gaya Usay Dhoondo
AS OF 17TH FEB 2017
1 BITCOIN IS WORTH
1040$
SO 1 BITCOIN IS
70103
THE LAST BITCOIN
(PROBABLY 21 MILLIONTH COIN)
WILL BE MINED IN THE YEAR
2140
ANONYMITY
VS
PSEUDONYMITY
Mark TwainSamuel Clemens
CRYPTOCURRENCY IS AN ATTEMPT
TO BRING BACK A DECENTRALISED
CURRENCY OF PEOPLE, ONE THAT IS NOT
SUBJECT TO INFLATIONARY MOVES BY
A CENTRAL BANK
Distributed Ledger is a Consensus of
Replicated, Shared & Synchronized
digital data geographically spread across
multiple sites & countries
Type of Distributed Ledger, comprised
of Unchangeable, Digitally
Recorded Data in packages called
BLOCKS
TAMPER EVIDENT LEDGER
https://anders.com/blockchain/
BASICALLY CHUNKS OF INFO
THAT CAN BE USED TO
MATHEMATICAL
GUARANTEE ABOUT MESSAGES
Peer-to-
Peer (P2P)
network is
created when
two or
more PCs are
connected &
share
resources
without
going through a
separate
server
computer
“शरीर में 206 हड्डिय ां
है, और सांविध न में
1670 क नून ... हड्िी
से लेकर क नून सब
तोड़त हूूँ….”
SHA तोड़ के
दिख ….
BITCOIN MINING
MERKLE TREE
A user for CONDUCTING
TRANSACTIONS utilizing BITCOIN,
he or she must first DOWNLOAD and
setup a BITCOIN WALLET
BITCOIN WALLET can show the
total BALANCE of all BITCOINS it
CONTROLS and let A USER PAY a
specified AMOUNT
WALLET contains a USER’S
PRIVATE KEY, which ALLOWS
FOR THE SPENDING of the
BITCOINS, which are located in
the BLOCK CHAIN
Once wallet is INSTALLED &
CONFIGURED, an ADDRESS
is GENERATED which is
SIMILAR to an E-MAIL or
PHYSICAL ADDRESS
WALLET is basically
the Bitcoin Equivalent
of a Bank account.
Allows to RECEIVE BITCOINS,
STORE them, and then SEND
them to others
Connected to the Internet
or is online is said to be HOT
Cold Wallets & Hot Wallets
Cold is considered
most Secure &
suitable for Storing
Large Amounts of
bitcoins
Hot is suitable for
Frequently
Accessed funds
COLD implies it is Offline or
Disconnected from the
Internet
Designedto be downloaded
& used on Laptops/PCs
DESKTOPWALLETS
Armory, Multibit, Msigna
and Hiveto mention a FEW
Easyto Access.
Available for Different OS
– Windows, Mac OS and Ubuntu.
MOBILEWALLETS
ONLINEWEBWALLETS
PHYSICALWALLETS
Once they are generated, you
print them out on a piece of
paper
Paper Wallets can
Securely hold your BITCOINS
in Cold Storage form for a
long time
Bitaddress.org
or Blockchain.info
BitcoinQt is the First ever built
bitcoin CLIENT WALLET
BITCOINCLIENTS
WALLETS
Original bitcoin
wallet used by the
Pioneers of the
currency
COMPUTERS installed with these wallets
FORM PART OF THE CORE
NETWORK & have access to all
transactions on the blockchain
HARDWAREWALLETS
BITCOIN ARTIFACTS
They DON’T EXIST
ANYWHERE, even
on a hard drive
When we say SOMEONE HAS
BITCOINS & you look at a
PARTICULAR BITCOIN ADDRESS,
there are NO DIGITAL BITCOINS held
AGAINST that ADDRESS
BALANCE of any BITCOIN
address ISN’T HELD at that
ADDRESS; one MUST
RECONSTRUCT it by looking at
the BLOCKCHAIN
Everyone on the NETWORK knows about a
TRANSACTION and THE HISTORY
OF A TRANSACTION can be TRACED
BACK to the point where the BITCOINS
were produced
Conduct a
SEARCH based
on BLOCK
NUMBER,
ADDRESS,
BLOCK HASH,
TRANSACTION
HASH or
PUBLIC KEY
BITCOIN-QT FOLDER STRUCTURE
BITCOIN-QT FOLDER STRUCTURE
Blocks – This subdirectory contains blockchain data and
contains a “blk.dat” file and a “blocks/index”
subdirectory.
“blk.dat” stores actual Bitcoin blocks dumped
in raw format.
The “blocks/index subdirectory” is a database
that contains metadata about all known blocks
Chainstate subdirectory- it is a
database with a compact
representation of all currently unspent
transactions and some metadata about
where the transactions originated
BITCOIN-QT FOLDER STRUCTURE
Database subdirectory -
Contains database journaling
files (Data Directory,
BITCOIN-QT FOLDER STRUCTURE
LOCK FILE
DEBUG.LOG
PEERS.DAT
WALLET.DAT
BITCOIN-QT FOLDER STRUCTURE
DB LOCK FILE
EXTENSIVE LOGGING
FILE
PEER INFORMATION
STORAGE FOR
KEYS,TXN,METADATA
etc
Private key of the suspect, they can
search for that particular key on the
Blockchain to Trace the purchases
to other potential Suspects.
investigator has the Bitcoin
BITCOIN FORENSIC ARTIFACT EXAMINATION
Windows 7 Professional
Multibit
Bitcoin-Qt
Bitminter
Basic USB ASIC Bitcoin
Gateway laptop ML6720
120 GB WD hard drive
(4) USB ASIC Mining
drives
USB powered cooling fan
32 GB USB thumb drive
Utilizing the data from
344
transactions,
Meiklejohn able to
identify the owners of
more than a million
Bitcoin addresses
Sarah Meiklejohn, a Bitcoin focused
Computer Researcher
Extensive Research
in
Bitcoin Blockchain
Found that by looking
blockchain an
investigator can
uncover who owns a
Bitcoin addresses
Bitcoin transactions occur via a
Network Connection, an investigator
should seize any Physical Object that
can connect to the Internet in addition
to the hard drive
COLLECTION OF BITCOIN ARTIFACTS
• System Info
• Info about Logged users
• Registry Info
• Remnants of Chats
• Web browsing Activities
• Recent Communications
• Info from Cloud Services
• Decryption Keys for encrypted
volumes mounted
COLLECTION OF BITCOIN ARTIFACTS
Ulbricht
Ross
anupamtiwari@protonmail.com
https://about.me/anupam.tiwari

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Bitcoin Forensics

  • 1.
  • 2. The views expressed in this presentation are Mere Apne. Reference to any specific products, process ,or service do not necessarily constitute or imply endorsement, recommendation, or views of Min of Def or any Govt All images used are for illustrative purposes only & Do not promote any specific product
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  • 4.
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  • 11. Name used by the unknown person or persons who designed BITCOIN and created its original reference implementation SATOSHI NAKAMOTO Kahan Gaya Usay Dhoondo
  • 12.
  • 13. AS OF 17TH FEB 2017 1 BITCOIN IS WORTH 1040$ SO 1 BITCOIN IS 70103
  • 14. THE LAST BITCOIN (PROBABLY 21 MILLIONTH COIN) WILL BE MINED IN THE YEAR 2140
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  • 16.
  • 18.
  • 19. CRYPTOCURRENCY IS AN ATTEMPT TO BRING BACK A DECENTRALISED CURRENCY OF PEOPLE, ONE THAT IS NOT SUBJECT TO INFLATIONARY MOVES BY A CENTRAL BANK
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  • 22. Distributed Ledger is a Consensus of Replicated, Shared & Synchronized digital data geographically spread across multiple sites & countries
  • 23. Type of Distributed Ledger, comprised of Unchangeable, Digitally Recorded Data in packages called BLOCKS TAMPER EVIDENT LEDGER
  • 24.
  • 26. BASICALLY CHUNKS OF INFO THAT CAN BE USED TO MATHEMATICAL GUARANTEE ABOUT MESSAGES
  • 27. Peer-to- Peer (P2P) network is created when two or more PCs are connected & share resources without going through a separate server computer
  • 28.
  • 29.
  • 30.
  • 31. “शरीर में 206 हड्डिय ां है, और सांविध न में 1670 क नून ... हड्िी से लेकर क नून सब तोड़त हूूँ….” SHA तोड़ के दिख ….
  • 32.
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  • 35.
  • 37.
  • 38. A user for CONDUCTING TRANSACTIONS utilizing BITCOIN, he or she must first DOWNLOAD and setup a BITCOIN WALLET BITCOIN WALLET can show the total BALANCE of all BITCOINS it CONTROLS and let A USER PAY a specified AMOUNT
  • 39. WALLET contains a USER’S PRIVATE KEY, which ALLOWS FOR THE SPENDING of the BITCOINS, which are located in the BLOCK CHAIN Once wallet is INSTALLED & CONFIGURED, an ADDRESS is GENERATED which is SIMILAR to an E-MAIL or PHYSICAL ADDRESS
  • 40. WALLET is basically the Bitcoin Equivalent of a Bank account. Allows to RECEIVE BITCOINS, STORE them, and then SEND them to others
  • 41. Connected to the Internet or is online is said to be HOT Cold Wallets & Hot Wallets Cold is considered most Secure & suitable for Storing Large Amounts of bitcoins Hot is suitable for Frequently Accessed funds COLD implies it is Offline or Disconnected from the Internet
  • 42. Designedto be downloaded & used on Laptops/PCs DESKTOPWALLETS Armory, Multibit, Msigna and Hiveto mention a FEW Easyto Access. Available for Different OS – Windows, Mac OS and Ubuntu.
  • 45. PHYSICALWALLETS Once they are generated, you print them out on a piece of paper Paper Wallets can Securely hold your BITCOINS in Cold Storage form for a long time Bitaddress.org or Blockchain.info
  • 46. BitcoinQt is the First ever built bitcoin CLIENT WALLET BITCOINCLIENTS WALLETS Original bitcoin wallet used by the Pioneers of the currency COMPUTERS installed with these wallets FORM PART OF THE CORE NETWORK & have access to all transactions on the blockchain
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  • 51. They DON’T EXIST ANYWHERE, even on a hard drive
  • 52. When we say SOMEONE HAS BITCOINS & you look at a PARTICULAR BITCOIN ADDRESS, there are NO DIGITAL BITCOINS held AGAINST that ADDRESS BALANCE of any BITCOIN address ISN’T HELD at that ADDRESS; one MUST RECONSTRUCT it by looking at the BLOCKCHAIN
  • 53. Everyone on the NETWORK knows about a TRANSACTION and THE HISTORY OF A TRANSACTION can be TRACED BACK to the point where the BITCOINS were produced
  • 54. Conduct a SEARCH based on BLOCK NUMBER, ADDRESS, BLOCK HASH, TRANSACTION HASH or PUBLIC KEY
  • 55.
  • 56.
  • 58. BITCOIN-QT FOLDER STRUCTURE Blocks – This subdirectory contains blockchain data and contains a “blk.dat” file and a “blocks/index” subdirectory. “blk.dat” stores actual Bitcoin blocks dumped in raw format. The “blocks/index subdirectory” is a database that contains metadata about all known blocks
  • 59. Chainstate subdirectory- it is a database with a compact representation of all currently unspent transactions and some metadata about where the transactions originated BITCOIN-QT FOLDER STRUCTURE
  • 60. Database subdirectory - Contains database journaling files (Data Directory, BITCOIN-QT FOLDER STRUCTURE
  • 61. LOCK FILE DEBUG.LOG PEERS.DAT WALLET.DAT BITCOIN-QT FOLDER STRUCTURE DB LOCK FILE EXTENSIVE LOGGING FILE PEER INFORMATION STORAGE FOR KEYS,TXN,METADATA etc
  • 62. Private key of the suspect, they can search for that particular key on the Blockchain to Trace the purchases to other potential Suspects. investigator has the Bitcoin
  • 63.
  • 64. BITCOIN FORENSIC ARTIFACT EXAMINATION Windows 7 Professional Multibit Bitcoin-Qt Bitminter Basic USB ASIC Bitcoin Gateway laptop ML6720 120 GB WD hard drive (4) USB ASIC Mining drives USB powered cooling fan 32 GB USB thumb drive
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  • 67. Utilizing the data from 344 transactions, Meiklejohn able to identify the owners of more than a million Bitcoin addresses Sarah Meiklejohn, a Bitcoin focused Computer Researcher Extensive Research in Bitcoin Blockchain Found that by looking blockchain an investigator can uncover who owns a Bitcoin addresses
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  • 71.
  • 72. Bitcoin transactions occur via a Network Connection, an investigator should seize any Physical Object that can connect to the Internet in addition to the hard drive COLLECTION OF BITCOIN ARTIFACTS
  • 73.
  • 74. • System Info • Info about Logged users • Registry Info • Remnants of Chats • Web browsing Activities • Recent Communications • Info from Cloud Services • Decryption Keys for encrypted volumes mounted COLLECTION OF BITCOIN ARTIFACTS
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  • 77.