簡(jiǎn)介：Coinbase吕喘，相信大家都不陌生漂辐，世界頂級(jí)數(shù)字貨幣交易所显拳。Coinbase 有非常完備的 API 服務(wù)，包括允許開(kāi)發(fā)人員使用 OAuth2 協(xié)議允許 Coinbase 用戶(hù)授予第三方應(yīng)用程序?qū)ζ鋷?hù)的完全或部分訪問(wèn)權(quán)限伪很，而無(wú)需共享帳戶(hù)的 API 密鑰或登錄憑據(jù)岔激。本篇文章介紹開(kāi)發(fā)者如何使用 Coinbase 公共數(shù)據(jù) API 獲取交易對(duì)歷史價(jià)格。
Coinbase是掰，相信大家都不陌生虑鼎，世界頂級(jí)數(shù)字貨幣交易所。Coinbase 有非常完備的 API 服務(wù)键痛，包括允許開(kāi)發(fā)人員使用 OAuth2 協(xié)議允許 Coinbase 用戶(hù)授予第三方應(yīng)用程序?qū)ζ鋷?hù)的完全或部分訪問(wèn)權(quán)限炫彩，而無(wú)需共享帳戶(hù)的 API 密鑰或登錄憑據(jù)。
Coinbase, which I believe everyone knows, is the world's top digital currency exchange. Coinbase's API services are very comprehensive, it allows developers to use the OAuth2 protocol to allow a Coinbase user to grant a 3rd party application full or partial access to his/her account, without sharing the account’s API key or login credentials.
本篇文章絮短，我們展示如何利用 Coinbase 的 Market Data API 獲取交易對(duì)歷史價(jià)格江兢。
In this article, we show how to use Coinbase's Market Data API to get the historic rates for a product.
Market Data API 是 Coinbase Pro API 中不需要身份驗(yàn)證的公共信息端口，用于檢索市場(chǎng)數(shù)據(jù)丁频。它提供市場(chǎng)數(shù)據(jù)的快照杉允。
The Market Data API is an unauthenticated set of endpoints for retrieving market data. These endpoints provide snapshots of market data.
Market Data API 官方文檔：https://docs.pro.coinbase.com/#market-data
Market Data API official documentation: https://docs.pro.coinbase.com/#market-data
獲取交易對(duì)歷史價(jià)格：
Get the historic rates for a product.:
使用沙箱測(cè)試端口：
Use sandbox URL:
https://api-public.sandbox.pro.coinbase.com/products/<product-id>/candles
使用生產(chǎn)端口：
Use rest API endpoint URL:
https://api.pro.coinbase.com/products/<product-id>/candles
比如查詢(xún) ETH-BTC 交易對(duì)：
For example, query ETH-BTC:
使用沙箱測(cè)試端口：
Use sandbox URL:
https://api-public.sandbox.pro.coinbase.com/products/ETH-BTC/candles
使用生產(chǎn)端口：
Use rest API endpoint URL:
Node.js 代碼示例：
Code example (Node.js):
const fetch = require('node-fetch');
fetch('https://api-public.sandbox.pro.coinbase.com/products/<product-id>/candles', {
method: 'get',
}).then(response => response.json()
.then(data => console.log(data)));
端口接受三個(gè)可選參數(shù)：
Parameters:
start: ISO 8601規(guī)則的開(kāi)始時(shí)間
end: ISO 8601規(guī)則的結(jié)束時(shí)間
granularity: 時(shí)間段大小（輸入秒數(shù)）
start: Start time in ISO 8601
end: End time in ISO 8601
granularity: Desired timeslice in seconds
granularity 參數(shù)只能是這些值：{60, 300, 900, 3600, 21600, 86400}席里。否則請(qǐng)求將被拒絕叔磷。這些值都是秒數(shù)，分別代表一分鐘奖磁，五分鐘改基，十五分鐘，一小時(shí)咖为，六小時(shí)和一天秕狰。
The granularity field must be one of the following values: {60, 300, 900, 3600, 21600, 86400}. Otherwise, your request will be rejected. These values correspond to timeslices representing one minute, five minutes, fifteen minutes, one hour, six hours, and one day, respectively.
返回的 JSON 示例：
Return JSON example:
[
[ time, low, high, open, close, volume ],
[ 1415398768, 0.32, 4.2, 0.35, 4.2, 12.3 ],
...
]
返回 JSON 釋義：
Each bucket is an array of the following information:
time: 時(shí)間段開(kāi)始的時(shí)間；
low: 時(shí)間段中的最低價(jià)格躁染；
high: 時(shí)間段中的最高價(jià)格鸣哀；
open: 時(shí)間段中第一筆交易的開(kāi)盤(pán)價(jià)；
close: 時(shí)間段中最后一筆交易的收盤(pán)價(jià)吞彤；
volume: 時(shí)間段中的交易活動(dòng)量我衬。
time: bucket start time
low: lowest price during the bucket interval
high: highest price during the bucket interval
open: opening price (first trade) in the bucket interval
close: closing price (last trade) in the bucket interval
volume: volume of trading activity during the bucket interval
Market Data API 思維導(dǎo)圖：
Mind map of the Market Data API:
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