Unverified50% confidenceFactExact time
W3C TraceContext是由W3C于2021年正式发布的分布式追踪传播标准，核心定义了traceparent和tracestate两个HTTP请求头
1
Sources
50%
Confidence
Long-term
Relevance
7/16/2026
First Seen
Sources
Related Claims
UnverifiedThe ActivityPub protocol was formally standardized by the W3C in 2018, allowing different instances to mutually follow, repost, and interact, forming a distributed social network that requires no central server.65% similarUnverifiedWebRTC is a peer-to-peer real-time communication protocol led by Google and standardized by W3C, with built-in AEC acoustic echo cancellation, ANS automatic noise suppression, and adaptive jitter buffer modules, all of which are processed locally on the client.62% similarVerifiedWCAG (Web Content Accessibility Guidelines) is developed by W3C; the current mainstream version is WCAG 2.1, with three compliance levels: A, AA, and AAA.62% similarUnverifiedThe Web Audio API was proposed as a draft by the W3C in 2011, became an official W3C Recommendation in 2021, and is currently supported by all mainstream browsers.62% similarUnverifiedWCAG 2.1（Web内容无障碍指南）由W3C制定，对交互组件的键盘行为和ARIA语义有严格要求59% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/532970API
curl https://kongchang.com/api/v1/knowledge/claims/532970MCP
get_claim(id=532970)