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According to a news article, the first blockchain application is an application released in 1992 called AbsoluteProof by the company Surety [1].

[1] https://www.vice.com/en/article/j5nzx4/what-was-the-first-bl...

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"As Ethereum's cofounder Vitalik Buterin joked on Twitter, if someone wanted to compromise Surety's blockchain they could "make fake newspapers with a different chain of hashes and circulate them more widely." Given that the New York Times has an average daily print circulation of about 570,000 copies, this would probably be the stunt of the century."

What if the hash is published in multiple newspapers.

Circulating that many fake newspapers is not possible. If you printed up that many newspapers, who would you give them to? Anyone who wants to read the NYT likely has a source, or at least knows one; same for sellers. The NYT wishes that there were twice as many people who wanted to read their paper.

Yay, thank you, I was racking my brains trying to remember Surety as an example in response to https://news.ycombinator.com/item?id=37782446

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