Which major retail innovation became the first widely-adopted blockchain-based loyalty program that allowed customers to earn and exchange points across multiple brands?

The intersection of blockchain technology and retail loyalty programs represents one of the most significant innovations in modern retail. This revolutionary approach has transformed how brands interact with consumers, offering unprecedented transparency, security, and value exchange. Test your knowledge about this groundbreaking retail technology advancement that has reshaped customer engagement and reward systems worldwide.

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IBM's TrustChain (2017)
Singapore Airlines KrisFlyer Digital Wallet (2018)
Walmart's Supply Chain Tracker (2016)
Amazon Loyalty Ledger (2019)