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did-method

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DiD method is used to determine the impact of ChatGPT launch on the daily returns on stocks of tech companies from 2021 to 2024. The tech companies considered include Google (GOOG), Facebook (META), Microsoft (MSFT) and the non-tech companies are Johnson & Johnson (JNJ), McDonalds (MCD) and Shell PLC (SHEL). And tech companes as treatment group

  • Updated Oct 17, 2025
  • Stata

Secure SSI-style academic credential verification backend built with NestJS, PostgreSQL, Prisma, Redis, JWT, Ed25519, and AES-256-GCM for university-issued credentials, holder-controlled disclosure, and bank recruitment verification.

  • Updated Sep 17, 2026
  • TypeScript

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