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The Blockchain Story

Mkt Cap.
Vol. 24H
Open 24h
Low/High 24h
Market Price Open 24H Last Trade Volume 24H
Exmo 198.81 186.45 0.06 2,179.44
HitBTC 196.46 183.64 0.00 0.00
WEX 305.00 305.00 0.05 0.00
Binance 195.79 183.44 3.00 1,708.01
SingularityX 195.99 182.12 0.42 556.13
Bitfinex 196.43 182.94 0.02 53,604.49
idevex 196.16 182.94 0.01 10.55
HitBTC 198.14 182.61 0.24 48.92
WavesDEX 241.98 241.98 2.00 0.00
coss 306.87 306.87 0.01 0.00
Coinbase 195.97 182.84 0.49 63,617.54
RightBTC 116.11 116.11 5.72 0.00
Ethfinex 196.43 182.94 0.02 53,638.12
IndependentReserve 186.00 181.64 11.68 113.99
Gatecoin 141.00 141.00 0.00 0.00
Kucoin 196.14 182.99 0.00 132.27
DigiFinex 237.11 237.11 0.05 0.00
smartrade 168.82 168.82 0.01 0.00
Poloniex 197.02 197.02 0.27 0.00
OpenLedger 191.40 191.40 0.00 0.22
Cexio 196.27 183.40 1.54 665.54
smarttrade 106.26 106.26 0.05 0.00
LBank 449.99 449.99 0.19 0.00
hbus 225.96 225.96 2.13 0.00
Yobit 202.01 192.00 0.00 582.64
Simex 189.71 189.71 11.82 0.00
BTCChina 283.55 283.55 0.20 0.00
Tidex 190.00 190.00 0.01 0.00
BitTrex 196.72 182.66 1.86 1,828.77
Abucoins 917.87 917.87 0.00 0.00
itBit 195.85 182.75 4.66 3,152.84
Exenium 192.23 179.05 0.00 83.54
Remitano 466.05 466.05 0.20 0.00
Bgogo 216.31 216.31 0.01 0.00
Quoine 106.06 106.06 3.30 0.00
Gemini 195.91 182.62 0.09 5,091.63
OKCoin 196.81 183.01 0.54 218.97
Incorex 326.02 326.02 0.09 0.00
Nexchange 306.81 306.81 0.11 0.00
Cryptsy 1.85 1.85 1.23 0.00
BitexBook 205.57 197.88 0.01 0.56
Zecoex 119.55 119.55 0.29 0.00
BitFlip 170.00 170.00 0.25 0.00
bingcoins 195.16 180.45 0.94 320.62
crex24 199.20 186.10 0.01 4.96
Liquid 0.00 0.00 0.02 0.00
StocksExchange 380.00 380.00 0.00 0.00
HuobiPro 195.74 182.71 3.80 9,028.13
Bitstamp 195.98 183.09 4.50 26,866.68
Bitsane 100.00 100.00 0.06 0.00
CoinHub 2,744.38 9,135.57 14.78 13,531.46
Kraken 195.93 182.81 0.10 23,374.71
Graviex 200.00 200.00 0.00 0.00
Bitforex 196.00 182.85 0.04 77,785.31
Bibox 280.99 280.99 0.04 0.00
CCEX 120.00 120.00 0.00 0.00
DSX 197.16 184.59 0.20 330.45
Coinsbit 196.10 188.40 92.91 71,923.94
LiveCoin 360.00 360.00 0.07 0.00
cobinhood 261.00 261.00 0.08 0.00
Bitlish 187.77 187.77 0.25 0.00
coss 230.00 230.00 0.01 0.00
Coinroom 150.14 150.14 1.13 0.00
BCEX 571.00 571.00 0.18 0.00
Lykke 191.02 183.06 1.30 1.32
primexbt 196.43 182.94 0.02 56,284.71
Neraex 196.31 182.60 0.00 0.39
Coincap 195.42 195.42 4.55 0.00
BTCE 205.50 205.50 0.94 0.00
BTCAlpha 196.01 182.82 0.00 1,696.06
IDEX 195.84 186.63 1.04 12.48
Liquid 195.86 182.74 0.58 2,539.88
coinfield 196.20 183.71 1.75 429.69
P2PB2B 195.93 182.83 0.05 62,854.25
EXRATES 196.08 183.15 1.48 181,544.13
BitBay 197.10 182.84 0.57 28.13
coss 165.05 165.05 0.02 0.00
LiveCoin 198.48 188.52 1.68 669.23
Threexbit 210.01 210.01 0.03 0.00
ExtStock 194.21 180.85 0.70 8,296.26
Ore 150.00 150.00 0.01 0.00

The intent of Ethereum is to create an alternative protocol for building decentralized applications, providing a different set of tradeoffs that we believe will be very useful for a large class of decentralized applications, with particular emphasis on situations where rapid development time, security for small and rarely used applications, and the ability of different applications to very efficiently interact, are important. Ethereum does this by building what is essentially the ultimate abstract foundational layer: a blockchain with a built-in Turing-complete programming language, allowing anyone to write smart contracts and decentralized applications where they can create their own arbitrary rules for ownership, transaction formats and state transition functions. A bare-bones version of Namecoin can be written in two lines of code, and other protocols like currencies and reputation systems can be built in under twenty. Smart contracts, cryptographic "boxes" that contain value and only unlock it if certain conditions are met, can also be built on top of the platform, with vastly more power than that offered by Bitcoin scripting because of the added powers of Turing-completeness, value-awareness, blockchain-awareness and state.

In Ethereum, the state is made up of objects called "accounts", with each account having a 20-byte address and state transitions being direct transfers of value and information between accounts. An Ethereum account contains four fields:

  • The nonce, a counter used to make sure each transaction can only be processed once
  • The account's current ether balance
  • The account's contract code, if present
  • The account's storage (empty by default)

"Ether" is the main internal crypto-fuel of Ethereum, and is used to pay transaction fees. In general, there are two types of accounts: externally owned accounts, controlled by private keys, and contract accounts, controlled by their contract code. An externally owned account has no code, and one can send messages from an externally owned account by creating and signing a transaction; in a contract account, every time the contract account receives a message its code activates, allowing it to read and write to internal storage and send other messages or create contracts in turn.

Note that "contracts" in Ethereum should not be seen as something that should be "fulfilled" or "complied with"; rather, they are more like "autonomous agents" that live inside of the Ethereum execution environment, always executing a specific piece of code when "poked" by a message or transaction, and having direct control over their own ether balance and their own key/value store to keep track of persistent variables.

For more details visit https://ethereum.org/

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