Siddhartha Bhatia https://siddbhatia.com/ Java Engineer • Peppol Infrastructure • Builder. en How Peppol G3 certificates work — from the first lookup to the final receipt https://siddbhatia.com/writing/how-peppol-g3-certificates-work/ https://siddbhatia.com/writing/how-peppol-g3-certificates-work/ A visual deep-dive into every certificate operation in a Peppol exchange — SMP discovery, TLS, payload encryption, message signing, the verification gauntlet, and the signed receipt — and why G2 had to go. Sun, 26 Jul 2026 00:00:00 GMT peppol pki as4 security