Monday, 28 May 2018

“Transparent” Blockchain Is Pretty Darn Useful For Sharing Private Info

Two days ago, an open letter to China’s Peking University was anonymously uploaded to the Ethereum blockchain, effectively sharing it with anyone who trades or tracks the cryptocurrency.

In it, student Yue Xin writes that the university coerced her to stop looking into a decades-old controversy surrounding Gao Yan, a Peking University student who committed suicide in 1998 after being sexually assaulted by a professor, who remained on staff.

This letter had originally appeared on a more standard online platform. But it, along with several others by China’s #MeToo activists, have been vanishing from the internet, Quartz reports.

So to avoid censorship, people have started hiding text in the code of various cryptocurrencies. To upload Yue’s note, for example, the anonymous user pasted it in the notes section of a transaction. It was given the value for zero ether, meaning the note’s sole purpose was to share and distribute the letter.

Blockchains, you may recall, aren’t stored all in one place. They’re distributed — each participant stores a digital copy of the ledger. The endless horde of crypto-bros on the internet insists this feature makes blockchains transparent, ethical, and infallible. That part is debatable. But one thing is clear: anyone mining Ethereum can now read Yue Xin’s letter.

Other ethereum users called Yue’s letter historic; indeed, the uploader and the author are both brave to take such a risk in an effort to combat sexual assault. But it’s actually not the first time that a cryptocurrency transaction has been used to store something long-term on the blockchain.

Cryptocurrency exchanges have been found to contain all sorts of information, both public and encrypted. These range from the annoying (advertisements) to the cutesy (never gonna give you up!) to the illegal (Wikileaks data, software keys, and child pornography.)

It’s not all that hard for governments to de-anonymize the parties on either side of particular cryptocurrency transactions. That’s good news for combatting child abuse, but not-so-great news for whoever posted Yue’s letter.

This complicates things for blockchain advocates, since their whole spiel is that creating a decentralized network will lead to a better world. But now, they have to grapple with how to handle long-term and permanent storage of things added to crypto transactions. And it’s becoming pretty clear that people who post information into their transactions can’t dodge repercussions.

source: futurism.com
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