Unverified60% confidenceFactTime unknown
Substack was founded in 2017 by Chris Best, Hamish McKenzie, and Jairaj Sethi
2
Sources
60%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
Related Entities
Related Claims
Cite This Claim
Stable URI
https://kongchang.com/claim/28458API
curl https://kongchang.com/api/v1/knowledge/claims/28458MCP
get_claim(id=28458)