What in the world is Bitcoin? [2017]

First of the Talking Technology talks on Bitcoin, given on October 2017 in Bermuda.

Transcript

1. What in the
   world is
   Itcoin ?
   

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2. Hello!
   I am Alvaro Feito Boirac, PhD
   Quantum Physicist, teacher, coder, crypto enthusiast
   

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3. What in the
   world is
   Itcoin ?
   

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4. EASY!
   It’s internet CASH!
   

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5. EASY!
   

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6. EASY!
   electronic
   

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7. EASY!
   electronic pseudo-anonymous
   

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8. EASY!
   electronic pseudo-anonymous decentralized
   

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9. EASY!
   electronic pseudo-anonymous decentralized
   Proof-of-work
   

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10. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    

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11. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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12. Say
    WAT?
    

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13. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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14. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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15. > 90%* of fiat money is already electronic (digital)
    

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16. > 90% of fiat money is already digital*
    

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17. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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18. EASY!
    electronic Currency on a MAGIC ledger
    

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19. EASY!
    electronic Currency on a SPECIAL ledger
    

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20. a special ledger
    BItcoin IS
    

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21. JOE - 2.2 BTC
    ALICE - 1 BTC
    RUNA - 0.0042 BTC
    Bitcoin is a LEDGER
    

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22. JOE - 2.2 BTC
    ALICE - 1 BTC
    RUNA - 0.0042 BTC
    Bitcoin is a LEDGER
    1 BTC
    

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23. JOE - 2.2 - 1 BTC
    ALICE - 1 +1 BTC
    RUNA - 0.0042 BTC
    Bitcoin is a LEDGER
    

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24. Ok, I know ledgers.
    BUT
    Where is the ledger?
    Who updates it?
    Why not write a fake balance?
    Who issues the BTC?
    

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25. “THAT’s WHERE
    THE MAGIC HAPPENS”
    

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26. 1. Who updates the ledger?
    

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27. 1. Who updates the ledger?
    × Central Bank
    × Bank
    × VISA/W.Union
    

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28. 1. Who updates the ledger?
    × CENTRAL
    × TRUSTED
    × AUTHORITY
    × MIDDLEMEN
    

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29. 1. Who updates the ledger?
    

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30. 1. Who updates the ledger?
    × BOOKKEEPERS ARE THOSE
    WHO CHOOSE TO PARTICIPATE
    

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31. BITCOIN
    The bank run by YOU!
    

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32. View Slide

33. Bill $100
    Runa $100
    Alice $100
    Joe $100
    

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34. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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35. 1VayNert3x1KzbpzMGt2qdqrAThiRovi8 2 BTC
    15JhBLtCWaDqrMrgcyDhu7m62TVZxgrtj8 0.018 BTC
    1P9RQEr2XeE3PEb44ZE35sfZRRW1JHU8qx 4,318 BTC
    18p9Ftp3m4435tdpZTvoBsm3yjUgkvTF2b 3.1 BTC
    1D5bPm1YAdn9WvAAixht7PbACU3TtkqtJJ 48.5 BTC
    ...
    

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36. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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37. Place your screenshot here
    The LEDGER
    IS PUBLIC &
    DISTRIBUTED
    

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38. 1VayN.. 2 BTC
    15JhB.. 0.018 BTC
    1P9RQ.. 4,318 BTC
    18p9F.. 3.1 BTC
    1D5bP.. 48.5 BTC
    1VayN.. 2 BTC
    15JhB.. 0.018 BTC
    1P9RQ.. 4,318 BTC
    18p9F.. 3.1 BTC
    1D5bP.. 48.5 BTC
    1VayN.. 2 BTC
    15JhB.. 0.018 BTC
    1P9RQ.. 4,318 BTC
    18p9F.. 3.1 BTC
    1D5bP.. 48.5 BTC
    1VayN.. 2 BTC
    15JhB.. 0.018 BTC
    1P9RQ.. 4,318 BTC
    18p9F.. 3.1 BTC
    1D5bP.. 48.5 BTC
    1VayN.. 2 BTC
    15JhB.. 0.018 BTC
    1P9RQ.. 4,318 BTC
    18p9F.. 3.1 BTC
    1D5bP.. 48.5 BTC
    

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39. How is the LEDGER
    

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40. View Slide

41. Peter (1EiwDW9VjTUbLJtuPYUkbj5fJDnc36WKdz) 1mBTC → Allie (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    Img source
    

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42. Peter (1EiwDW9VjTUbLJtuPYUkbj5fJDnc36WKdz) 1mBTC → Allie (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    Img source
    

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43. Peter (1EiwDW9VjTUbLJtuPYUkbj5fJDnc36WKdz) 1mBTC → Allie (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    Img source
    

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44. $8,000,000*
    in transactions, one bookkeeper gets 12.5 BTC
    For updating “the book” with
    

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45. View Slide

46. REAL LIFE BITCOIN
    “BOOKKEEPERS”
    

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47. View Slide

48. Img source
    

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49. Img source
    Peter
    1EiwDW9VjTUbLJtuPY
    Ukbj5fJDnc36WKdz
    BALANCE: 1 BTC
    

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50. Img source
    Peter
    BALANCE:
    1 BTC
    Peter 1 BTC → Bob
    

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51. Img source
    Peter
    BALANCE:
    1 BTC
    Peter 1 BTC → Allie
    Peter 1 BTC → Bob
    

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52. Img source
    Peter
    BALANCE:
    1 BTC
    Double
    Spending
    

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53. Img source
    Peter
    BALANCE:
    1 BTC
    Peter
    (1EiwDW9VjTUbLJtuPYUkbj5fJDnc36WKdz)
    1BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    

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54. Img source
    Peter
    BALANCE:
    1 BTC
    Julia
    (6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm)
    100 BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    

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55. Img source
    Peter
    BALANCE:
    1 BTC
    Who sent
    WHAT?
    

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56. Img source
    MALICIOUS
    UPDATE
    

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57. WE MADE IT TO
    THE HEART OF
    Itcoin ?
    

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58. HOW DO YOU UPDATE A
    TRUSTLESS, DISTRIBUTEd
    DIGITAL MONEY LEDGER?
    

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59. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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60. Img source
    

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61. Img source
    

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62. Img source
    SUMMARY BOX
    

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63. Img source
    SUMMARY BOX
    CAPULET
    My sword, I say.Old Montague
    is come And flourishes hisblade
    in spite of me.
    ROMEO
    Thou villain Capulet!—Hold me
    not; let me go.
    LADY MONTAGUE
    Thou shalt not stir one foot to
    seek a foe.
    PRINCE
    Rebellious subjects, enemies
    . . . . . . . . . . .
    Romeo & Juliet in
    love. Parents don’t
    approve. Drama ensues.
    

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64. Img source
    SUMMARY BOX
    CAPULET
    My sword, I say.Old Montague
    is come And flourishes hisblade
    in spite of me.
    PETER
    Thou villain Capulet!—Hold me
    not; let me go.
    LADY MONTAGUE
    Thou shalt not stir one foot to
    seek a foe.
    PRINCE
    Rebellious subjects, enemies
    . . . . . . . . . . .
    Peter & Juliet in
    love. Parents don’t
    approve. Drama ensues.
    

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65. Img source
    MAGIC SUMMARY BOX
    

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66. Img source
    MAGIC SUMMARY BOX
    730e109bd7a8a32b1cb9d9a09aa2325
    d2430587ddbc0c38bad911525
    CAPULET
    My sword, I say.Old Montague
    is come And flourishes hisblade
    in spite of me.
    ROMEO
    Thou villain Capulet!—Hold me
    not; let me go.
    LADY MONTAGUE
    Thou shalt not stir one foot to
    seek a foe.
    PRINCE
    Rebellious subjects, enemies
    . . . . . . . . . . .
    

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67. Img source
    MAGIC SUMMARY BOX
    619cba8e8e05826e9b8c519c0a5c68f4
    fb653e8a3d8aa04bb2c8cd4c
    CAPULET
    My sword, I say.Old Montague
    is come And flourishes hisblade
    in spite of me.
    RODEO
    Thou villain Capulet!—Hold me
    not; let me go.
    LADY MONTAGUE
    Thou shalt not stir one foot to
    seek a foe.
    PRINCE
    Rebellious subjects, enemies
    . . . . . . . . . . .
    

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68. MAGIC SUMMARY BOX
    6ed0dd02806fa89e25de060c19d3ac8
    6cabb87d6a0ddd05c333b84f4
    42Gb
    

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69. MAGIC SUMMARY BOX
    d14a028c2a3a2bc9476102bb288234c
    415a2b01f828ea62ac5b3e42f
    42Gb
    (Add a letter or comma)
    

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70. MAGIC SUMMARY BOX
    cd6357efdd966de8c0cb2f876cc89ec7
    4ce35f0968e11743987084bd42f
    dog
    

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71. INPUT d14a028c2a3a2bc9476102bb288234c
    415a2b01f828ea62ac5b3e42f
    GOOD SUMMARY BOX:
    SAME OUTPUT
    

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72. sje92na92a3a2bc9476102bb288234c
    415a2b01f828ea6fjeni293749
    GOOD SUMMARY BOX:
    IMPOSSIBLE TO REVERSE
    

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73. sje92na92a3a2bc9476102bb288234c
    415a2b01f828ea6fjeni293749
    GOOD SUMMARY BOX:
    Can’T REVERSE (Have to try all )
    a
    Aa
    Aaa
    Aaaa
    Aaaaa
    Aaaaab
    Aaaaaaa
    Aaaaaaaa
    Aaaaaaaaa
    Aaaaaaaaaa
    Aaaaaaaaaaa
    Aaaaaaaaaaaa
    B
    Bb
    Bbb
    Bbbb
    Hodll
    

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74. Img source
    Julia
    BALANCE:
    100 BTC
    Julia
    (6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm)
    10 BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    

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75. Img source
    Peter
    BALANCE:
    1 BTC
    Julia
    (6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm)
    100 BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    SIGNED:
    1011010011
    1010100100
    1001010011
    

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76. Img source
    Peter
    BALANCE:
    1 BTC
    Julia
    (6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm)
    100 BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    SIGNED:
    1011010011
    1010100100
    1001010011
    b2fa3d8e577402cf5654dbf559d89702c33db73667fa38fba4bdebdb924c1fb9
    

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77. Img source
    MAGIC VERIFY BOX
    

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78. Img source
    MAGIC VERIFY BOX
    b2fa3d8e577402cf5654dbf559d89702c3
    3db73667fa38fba4bdebdb924c1fb9
    Julia
    6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm
    

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79. Img source
    MAGIC VERIFY BOX
    b2fa3d8e577402cf5654dbf559d89702c3
    3db73667fa38fba4bdebdb924c1fb9
    Julia
    6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm
    

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80. Img source
    MAGIC VERIFY BOX
    b2fa3d8e577402cf5654dbf559d89702c3
    3db73667fa38fba4bdebdb924c1fb9
    Julia
    6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm
    100% sure JULIA
    SENT IT.
    

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81. Img source
    MAGIC VERIFY BOX
    b2fa3d8e577402cf5654dbf559d89702c3
    3db73667fa38fba4bdebdb924c1fb9
    Julia
    6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm
    100% sure JULIA
    SENT IT.
    SIGNED:
    1011010011
    1010100100
    1001010011
    

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82. Img source
    Julia
    (6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm)
    100 BTC → Allie
    (1AxZb1Nqh7TPWURjLbDUQsSpUQZnF5cqLe)
    a34b228a7f67d75f72499cd4b9d52952c8339286ad4f1eae612eb32a9cb3115
    ?
    

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83. Img source
    Bank Account #: 6Yr4nT0ppJVSXYPq0PQzSDEfJDnc36SAxm
    SIGNED:
    1011010011
    1010100100
    1001010011
    

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84. Img source
    Public Address: LcHDYmyoBtbzsvgn7Vcsb4fLwr8A9tBkXz
    Private Key: 6vdoxL5QtZiXQjQ9XZee8U1P3CXUwmzD2RVMWdK6ka6KskCB2MY
    

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85. Img source
    Public Address: LcHDYmyoBtbzsvgn7Vcsb4fLwr8A9tBkXz
    Private Key: 6vdoxL5QtZiXQjQ9XZee8U1P3CXUwmzD2RVMWdK6ka6KskCB2MY
    Send money to X
    

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86. Img source
    Public Address: LcHDYmyoBtbzsvgn7Vcsb4fLwr8A9tBkXz
    Private Key: 6vdoxL5QtZiXQjQ9XZee8U1P3CXUwmzD2RVMWdK6ka6KskCB2MY
    Send money to X
    

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87. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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88. MAGIC SUMMARY BOX
    cd6357efdd966de8c0cb2f876cc89ec7
    4ce35f0968e11743987084bd42f
    dog
    

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89. MAGIC SUMMARY BOX
    77af778b51abd4a3c51c5ddd97204a9c
    3ae614ebccb75a606c3b6865
    cat
    

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90. MAGIC SUMMARY BOX
    589856ec9cedf51a3f0f173465bd499d
    73add0cac701f50533fad6b20f3e
    JOE - 2.1 BTC
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.02 BTC
    SATO - 0.0032 BTC
    SHI - 0.0042 BTC
    JOE - 2.1 BTC
    ALICE - 1 .1 BTC
    RUNA - 2.0042 BTC
    JANE - 1.0042 BTC
    WEI - 45.02 BTC
    HAL - 2,000 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    JOE - 0.0001 BTC
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.0042 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.0042 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    

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91. Every 10 minutes a new “Summary” is made
    JOE - 2.1 BTC
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.02 BTC
    SATO - 0.0032 BTC
    SHI - 0.0042 BTC
    77af778b51abd4a3c51c5ddd97204a9c
    3ae614ebccb75a606c3b6865
    

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92. Every 10 minutes a new “Summary” is made
    JOE - 2.1 BTC
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0045 BTC
    HAL - 0.02 BTC
    SATO - 0.0032 BTC
    SHI - 0.0042 BTC
    14ba98b40af2a18df3808227ff9332c8
    aa98727d3720863df68a413714e
    

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93. Every 10 minutes a new “Summary” is made
    ALICE - 1 .1 BTC
    RUNA - 0.0042BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.0042 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    14ba98b40af2a18df38
    08227ff9332c8aa9827
    39j393j3939d3720863
    392jfmeovnmemdi2
    39384893jfnjnd393
    dae93j3felwknmsef
    

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94. Every 10 minutes a new “Summary” is made
    ALICE - 1 .1 BTC
    RUNA - 0.0042BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.0042 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    14ba98b40af2a18df38
    08227ff9332c8aa9827
    39j393j3939d3720863 392jfmeovnmemdi2
    39384893jfnjnd393
    dae93j3felwknmsef
    CAN’T change the past!
    

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95. EASY!
    electronic pseudo-anonymous decentralized
    Proof-of-work blockchain based
    crypto-currency
    

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96. Img source
    ALICE - 1 .1 BTC
    RUNA - 0.0042 BTC
    JANE - 0.0042 BTC
    WEI - 0.0042 BTC
    HAL - 0.0042 BTC
    SATO - 0.0042 BTC
    SHI - 0.0042 BTC
    SHI - 0.0042 BTC
    BUT What about
    The PRESENT?
    

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97. bookeeper
    

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98. Find a number such that:
    LEDGER + 1029482 00000000000000000000f0f173465bd
    499d73add0cac701f50533fad6b2
    

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99. Find a number such that:
    LEDGER + 1029482 00000000000000000000f0f173465bd
    499d73add0cac701f50533fad6b2
    12.5
    

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100. Find a number such that:
     LEDGER + 1029482 00000000000000000000f0f173465bd
     499d73add0cac701f50533fad6b2
     $56,000
     

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101. Find a number such that:
     LEDGER + 1 ad6cac701f50533fad6b2f173465bd49
     9d73add0cac701f50533fad6b2
     

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102. Find a number such that:
     LEDGER + 2 ffc9a7c51991e8b8d8eba3e33714e686
     4e6042f0f122b8058a8a1ecb34b6
     

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103. Find a number such that:
     LEDGER + 33 09689c1e421bb3ed387425962975352
     c93f5ae9f1fbe2859b5e41a80a23
     

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104. Find all the
     NUMBERZ !!
     

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105. Find a number such that:
     + 1029482 00000000000000000000f0f173465bd
     499d73add0cac701f50533fad6b2
     $56,000
     ALICE - 1 .1 BTC
     RUNA - 0.0042 BTC
     JANE - 0.0042 BTC
     WEI - 0.0202 BTC
     HAL - 0.0042 BTC
     SATO - 0.0042 BTC
     SHI - 0.0042 BTC
     

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106. Find a number such that:
     + 1029482 3dea57ef02538eb4e27b6c52ebf72375
     8eddc7c69bb11b1ea8b246fa5d4
     ALICE - 1 .1 BTC
     RUNA - 0.0042 BTC
     JANE - 0.0042 BTC
     WEI - 0.00
     52 BTC
     HAL - 0.0042 BTC
     SATO - 0.0042 BTC
     SHI - 0.0042 BTC
     

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107. Find a number such that:
     + 1029482 3dea57ef02538eb4e27b6c52ebf72375
     8eddc7c69bb11b1ea8b246fa5d4
     ALICE - 1 .1 BTC
     RUNA - 0.0042 BTC
     JANE - 0.0042 BTC
     WEI - 0.00
     52 BTC
     HAL - 0.0042 BTC
     SATO - 0.0042 BTC
     SHI - 0.0042 BTC
     Honesty = more profitable
     

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108. EASY!
     electronic pseudo-anonymous decentralized
     Proof-of-work blockchain based
     crypto-currency
     

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109. 1st time in History!
     Global & Trustless
     money transactions
     

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110. Christine Lagarde, IMF Chief
     Not be wise to dismiss
     virtual currencies. virtual
     currencies might just give
     existing currencies and
     monetary policy a run for
     their money
     

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111. THANKS!
     Talk at: bit.ly/Bitcoin56
     alvaro@feitobros.co
     

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112. Send $2 to friend in UK
     10 minutes, 2 cents
     Send $100 to Bolivia
     Send $1M to china on Sunday
     2h, $10
     20 minutes, 10 cents
     

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113. Pay for coffee
     10 minutes, $0.5?
     Donate to Wikileaks
     Banking for the unbanked
     5 minutes, no discrimination
     

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114. Money for oppressed
     Worldwide
     Travel with $5M in your head!
     Hedge for hyperinflation
     2h, $10
     

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115. $70,000,000,000
     Market cap
     $4500/BTC
     21,000,000
     Total supply
     

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116. View Slide

117. Where can you spend it?
     WordPress.com
     Overstock.com
     Subway Microsoft
     Reddit
     Virgin Galactic
     OkCupid
     Namecheap
     CheapAir.com
     Expedia.com
     Gyft
     Newegg.com
     Wikipedia
     Steam
     The Internet Archive
     Bitcoin.Travel
     Pembury Tavern
     Old Fitzroy
     Zynga – Mobile gaming
     Mega.co.nz
     Etsy Vendors – 93 of them
     Whole Foods
     - Real Estate
     - Computing
     - Lawyers
     - Actual
     Accountants
     - Darknet ...
     

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118. View Slide

119. 500,000 Needed to
     match the Bitcoin network!
     

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120. Huge Mining (bookkeeping)
     operations in CHINA, ICELAND, US
     

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121. Huge Mining (bookkeeping)
     operations in CHINA, ICELAND, US
     

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122. BLOCKCHAIN
     Contains all balances & all
     transactions done since 2009.
     

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123. View Slide

124. View Slide

125. Money
     https://www.federalreserve.gov/releases/h6/current/default.htm
     https://courses.lumenlearning.com/boundless-economics/chapter/introducing-money/
     https://www.quora.com/What-percentage-of-the-worlds-money-is-printed-in-cash-bills-coins
     http://www.marketwatch.com/story/this-is-how-much-money-exists-in-the-entire-world-in-one-cha
     rt-2015-12-18
     http://www.investopedia.com/tech/how-much-worlds-money-bitcoin/
     https://coinmarketcap.com/
     

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126. Blockchain
     https://bitcoinstrings.com/ (messages on the blockchain)
     https://cointelegraph.com/news/active-bitcoin-wallets-number-has-grown-four-fold-over-five-years
     -study
     https://anders.com/blockchain/
     

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