Bitcoin
Block Chain Basics
Agenda
● Satoshi
● Wallets
● Addresses
● Transactions
● Block Chain
● Mining
● Issuance
Satoshi Nakamoto
An internet creation myth
Wallets
The Bitcoin software
Wallet
Addresses & Transactions
This is a Bitcoin address:
1Kaxcsyj3wUCkffNhfd9pLYB7hmQrFa2iq
This is a Bitcoin address:
1Kaxcsyj3wUCkffNhfd9pLYB7hmQrFa2iq
KyN6RvhWyAzfTtbHAfSrjZYXvsAYnNFa2C4
N8n9ttQmrBZxTWP5p
This is its private key:
This is a transaction.
Send
5 BTC
from
1Fi57hAqyYYwaQVdA7a9qSKfiukBbt31G3
to
1NDpZ2wyFekVezssSXv2tmQgmxco
5.2894 BTC
1Fi57hAqyYYwaQVdA7a9qSKfiukBbt31G3
12t55VJvphiUEGKqqwbd5bGGbnLkbygbV6
The Blockchain
A distributed public ledger
This is a block.
A new block is created every
10 Minutes.
A block contains recent transactions.
Txn f5d8ee…
Txn a0347d...
Txn b73151…
Txn 552c91...
Txn 8cf0cd4…
Txn e541b3...
Block 293848
Hash: 0000000000000000a452d7cfbc3a7e62ec9f31bf2dcc50ed80c23e8422d9f656
This is the blockchain.~300,000
The flow of bitcoins is publicly visible.
1QHY
…
Bg3
137y
…
H3M
1aMS
…
P3t1PxF
…
23z
1PYh
…
9NB
1LBE
…
KHz
1JdE
…
5eu
Mining
Reaching consensus
Mining
Hash( )
Block 293847
Hash: 000000000000000020cfe89a3… ...
2f51a647fb79c766906b0eb4b2
Last hash +
New Txns +
Nonce
Block 293848
Hash: 0000000000000000a452d7cf...
… ed80c23e8422d9f656
Network Hash Rate
Issuance
Bitcoin issuance is fixed.
2009 2041
50%
100%21
0
2014
(MillionsofBitcoins)
0%
11.5
Thanks!

The Bitcoin Protocol for Humans