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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 264.41 262.84 0.42 1,935.14
HitBTC 276.50 276.50 0.00 0.00
WEX 305.00 305.00 0.05 0.00
Binance 269.48 268.40 1.30 3,823.38
SingularityX 269.01 268.23 4.63 572.85
Bitfinex 269.24 267.88 0.07 80,199.92
idevex 265.76 265.76 6.41 0.00
HitBTC 274.92 273.84 0.20 10.62
WavesDEX 241.98 241.98 2.00 0.00
coss 272.25 272.25 0.02 0.00
Coinbase 269.12 268.14 0.02 106,549.41
RightBTC 116.11 116.11 5.72 0.00
Ethfinex 269.24 267.88 0.07 80,335.84
IndependentReserve 273.53 275.00 3.35 6.69
Gatecoin 141.00 141.00 0.00 0.00
Kucoin 269.35 267.94 1.25 465.83
DigiFinex 237.11 237.11 0.05 0.00
smartrade 166.12 166.12 0.00 0.00
Poloniex 197.02 197.02 0.27 0.00
OpenLedger 274.99 256.56 0.00 0.00
Cexio 269.69 267.86 0.10 1,125.72
smarttrade 106.26 106.26 0.05 0.00
LBank 449.99 449.99 0.19 0.00
hbus 243.00 243.00 0.15 0.00
Yobit 275.00 269.75 0.01 80.39
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 269.00 268.25 0.10 2,742.90
Abucoins 917.87 917.87 0.00 0.00
itBit 269.00 268.05 11.74 8,793.20
Exenium 263.44 261.79 0.00 193.41
Remitano 466.05 466.05 0.20 0.00
Bgogo 269.49 268.11 0.01 174.28
Quoine 106.06 106.06 3.30 0.00
Gemini 269.37 268.37 3.64 11,166.35
OKCoin 270.65 268.43 0.70 93.25
Incorex 279.98 278.97 0.26 209.90
Nexchange 306.81 306.81 0.11 0.00
Cryptsy 1.85 1.85 1.23 0.00
BitexBook 271.19 265.13 0.01 0.56
Zecoex 119.55 119.55 0.29 0.00
BitFlip 170.00 170.00 0.25 0.00
crex24 272.10 260.00 0.00 2.56
Liquid 272.59 272.59 0.04 0.00
StocksExchange 275.00 236.20 0.00 4.50
HuobiPro 269.52 268.08 0.68 9,121.76
Bitstamp 269.11 268.09 5.77 49,381.31
Bitsane 100.00 100.00 0.06 0.00
CoinHub 190.10 190.10 1.00 0.00
Kraken 269.29 268.07 3.00 46,342.51
Graviex 249.55 249.55 0.03 0.00
Bitforex 269.35 268.17 0.41 42,333.53
Bibox 273.04 275.01 0.03 16.17
CCEX 120.00 120.00 0.00 0.00
DSX 265.66 260.97 0.87 759.63
Coinsbit 268.60 267.13 141.27 42,495.76
LiveCoin 222.00 222.00 0.01 0.00
cobinhood 245.01 245.01 0.04 0.00
Bitlish 273.55 270.80 1.22 11,934.93
coss 195.00 195.00 0.06 0.00
Coinroom 150.14 150.14 1.13 0.00
BCEX 87.41 87.41 2.12 0.00
Lykke 275.81 271.36 0.01 5.37
Neraex 268.15 267.36 0.27 5,848.03
Coincap 195.42 195.42 4.55 0.00
BTCE 205.50 205.50 0.94 0.00
BTCAlpha 267.92 266.46 0.03 732.83
IDEX 271.00 270.00 0.27 18.28
Liquid 268.75 268.28 18.60 3,390.14
P2PB2B 268.75 270.36 0.12 10,584.72
BitBay 272.79 269.19 0.19 160.90
coss 165.05 165.05 0.02 0.00
LiveCoin 268.00 263.74 0.22 695.14
Threexbit 270.80 254.74 0.01 24.84
ExtStock 266.77 264.20 0.25 7,759.97
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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