---
title: "Discussion on \"Before Writing a Smart Contract, Define What You Need to Verify\" | Hashnode"
description: "Discussion on \"Before Writing a Smart Contract, Define What You Need to Verify\". A practical way to think about blockchain architecture, using a certificate verification example.\nA training provider wants to issue digital certificates. The first request sounds straightforward:\n“Le"
url: "https://hashnode.com/posts/before-writing-a-smart-contract-define-what-you-need-to-verify/6af3760727764b3d8d02b2df"
---

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# [Before Writing a Smart Contract, Define What You Need to Verify](https://juanpabloabadiamedina.hashnode.dev/before-writing-a-smart-contract-define-what-you-need-to-verify?utm_source=hashnode&utm_medium=feed)

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

3d ago · 5 min read · juanpabloabadiamedina.hashnode.dev  
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-   [#blockchain](https://hashnode.com/tag/blockchain)
-   [#web3](https://hashnode.com/tag/web3)
-   [#software-architecture](https://hashnode.com/tag/software-architecture)
-   [#smart-contracts](https://hashnode.com/tag/smart-contracts)
-   [#security](https://hashnode.com/tag/security)

## Written by

[juan pablo abadia medina](https://hashnode.com/@juanpabloabadia)

@juanpabloabadia · Cali, Colombia

  
[View profile](https://hashnode.com/@juanpabloabadia)

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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