A practical way to think about blockchain architecture, using a certificate verification example. A training provider wants to issue digital certificates. The first request sounds straightforward: “Le
Full-stack developer & tech entrepreneur exploring blockchain, AI, and public innovation through citizen participation. Founder of Blockchai
I’m Juan Pablo Abadía Medina, a full-stack developer and technology entrepreneur based in Valle del Cauca, Colombia. I founded Blockchain Technology S.A.S. and created Ponwi and Ponwi Academy. My work connects blockchain, AI, Web3 development, and technology education with practical needs in businesses and communities. Here I share development experiences, technical decisions, and lessons from building projects, alongside ideas on public innovation and citizen participation.
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