I write a program to verify this website:
www.alipay.com
which root CA cert should I download from VeriSign, Inc.?
The curl project itself provides the Mozilla bundle converted to PEM if you'd like that:
You can use this one:
Or this one from mozilla:
https://mxr.mozilla.org/mozilla/source/security/nss/lib/ckfw/builtins/certdata.txt?raw=1