bitcoin:

poloniex

website: https://poloniex.com/ chart: https://poloniex.com/exchange#usdt_btc api doc: https://poloniex.com/support/api/ ticker: https://poloniex.com/public?command=returnTicker

kraken

website: https://www.kraken.com/ chart: https://www.kraken.com/charts api doc: https://www.kraken.com/en-us/help/api ticker: https://api.kraken.com/0/public/Ticker?pair=XXBTZUSD

<pair_name> = pair name
  a = ask array(<price>, <whole lot volume>, <lot volume>),
  b = bid array(<price>, <whole lot volume>, <lot volume>),
  c = last trade closed array(<price>, <lot volume>),
  v = volume array(<today>, <last 24 hours>),
  p = volume weighted average price array(<today>, <last 24 hours>),
  t = number of trades array(<today>, <last 24 hours>),
  l = low array(<today>, <last 24 hours>),
  h = high array(<today>, <last 24 hours>),
  o = today's opening price

bitfinex

website: https://www.bitfinex.com/ trading: https://www.bitfinex.com/trading api doc: https://bitfinex.readme.io/v2/reference ticker: https://api.bitfinex.com/v2/ticker/tBTCUSD

// on trading pairs (ex. tBTCUSD)
[
  BID,
  BID_SIZE,
  ASK,
  ASK_SIZE,
  DAILY_CHANGE,
  DAILY_CHANGE_PERC,
  LAST_PRICE,
  VOLUME,
  HIGH,
  LOW
]

bithumb

website: https://www.bithumb.com/ api doc: https://www.bithumb.com/u1/US127 ticker: https://api.bithumb.com/public/ticker/BTC

korbit

website: https://www.korbit.co.kr trading: https://www.korbit.co.kr/market/btc_krw

localbitcoin

website: https://localbitcoins.com api doc: https://localbitcoins.com/api-docs trading: https://localbitcoins.com/bitcoinaverage/ticker-all-currencies/

汇率 https://finance.yahoo.com/webservice/v1/symbols/allcurrencies/quote?format=json