# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/rmpvu6q
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二、架構實戰——支付流程詳解**
一、掃碼支付掃碼(1) 用戶掃碼    掃二維碼支付顯然是以用戶掃碼作爲整個業務的起點。從終端用戶的角度來看，掃碼由鑑權、支付和拉取狀態三個步驟組成。(2) 鑑權    掃碼支付最終會用買家的銀行卡進行支付。在你開始掃碼支付之前，第三方公司需要覈實你是否有這張卡的使用權，俗稱 “綁卡”。那第三方公司是怎麼驗證用戶的使用權呢？在國內，一般採用下面這 4 個要素來進行驗證：用戶姓名用戶身份證號碼銀行卡 ⌘ Read more