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Show HN: Copy tweets to Bitcoin's blockchain for $9 (totheblockchain.net)
41 points by jotto on Apr 25, 2018 | hide | past | web | favorite | 47 comments

"And on the blockchain, these words appear: My name is @ozymandiazz420, Independent Thinker; Look on my Tweets, ye Mighty, and despair!"

The lone and level bytes stretch far away.

Quite a cash grab.

Just use the memo.cash protocol and put it on the bitcoin cash blockchain for a fraction of the price (you just pay the BCH transaction fee). You're limited on the message size but the May 15 blockchain upgrade will increase the OP_RETURN limit and put the limit slightly higher than twitter's.


but then your tweet won't live forever ;)

FREE method!

- add @otsproofbot to your messages

- the bot will reply with a message with text and embedded proof.

- superior tech than OP

nice hijack attempt.

superior tech is absolutely laughable - you're storing tweets to a private and centralized database somewhere.

OP's writes them to bitcoin's distributed ledger where they are public and permanent.

To think bitcoin is a database is laughable.

Using OP_RETURN values is a neat idea. I wrote a thesis long time ago. (Using Bitcoin Blockchain For Fun and Profit) http://www.diva-portal.org/smash/get/diva2:1051913/FULLTEXT0...


The ability to store arbitrary data on these widely replicated blockchains raises some serious legal questions. What if someone puts illegal information on the blockchain (e.g. nuclear secrets, child porn)?

Even if some level of mens rea is required convictions, that is usually set at "reckless" (meaning that you were aware of the risk but acted anyway). Once there's a high-profile child-porn-on-the-blockchain case, it would be very hard to argue that you weren't at least aware of the risk that such information might be there. Even if the mens rea requirement is "knowing", that will still be a problem, as bitcoin miners and other savvy cryptocurrency actors would have a hard time claiming ignorance of the immutable nature of the blockchain.


> Based on these insights, we conduct a thorough quantitative and qualitative analysis of unintended content on Bitcoin’s blockchain. Although most data originates from benign extensions to Bitcoin’s protocol, our analysis reveals more than 1600 files on the blockchain, over 99 % of which are texts or images. Among these files there is clearly objectionable content such as links to child pornography, which is distributed to all Bitcoin participants.

There is porn within the digits of pi. That doesn't mean that hosting website with X number of digits of pi is illegal.

POINTING to the exact digits of pi, and telling the audience the decoding method, that points to thr illegal porn, or content would get you in trouble though.

Interesting question. For Bitcoin it would be difficult because of the small amount of data (except for maybe 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0), but what about i2p, IPFS, etc?

There is a cost, but larger pieces of data can be broken into chunks and stored on the blockchain. Some types of data are considered breaking the law to possess it, regardless of whether it was intentional or how it was acquired.

Can data broken up like that can be said to be in your possession if it is never recombined? What if you don't know how to recombine it but a prosecutor does? What if it is known to be recombinable but no one knows how to recombine it?

Most blockchain people I talk to are worryingly dismissive of this as a potential issue, including lawyers.

Those questions are very thought-provoking, and here are a few more:

* What if someone with access to your house/bag/coat slips in a Micro SD card with an illegal file on it?

* What if you download a large video file as a torrent and it contains an illegal file embedded steganographically within it?

* What if your computer is storing a large, possibly random-looking, file, and someone can produce a "one time pad" which, when XORed with that file, produces an illegal file?

Is that very different from publishing the same data on a torrent?

Clearly BTCs on chain transaction fees are way too low right now.

Gee, if only there was a simple and easy way to increase the capacity of the BTC blockchain.

Bitcoin has 10x the throughput of bitcoin cash https://bitinfocharts.com/comparison/transactions-btc-bch.ht...

Nice try but throughput != capacity.

current thruput says nothing except that the network can handle at least that much. Max thruput is a much more interesting comparison

Peepeth.com lets you "Peep" on the Ethereum blockchain for much less. Disclaimer: I am the creator.

And the point of this is?

Answered in the "Why?" section of the website link on which you are commenting.

Read the why section, still makes no sense. So many other ways to archive tweets without cluttering the bc blockchain.

It just sounds like it would be cool to do without actually value.

Are there tweets out there worth archiving?


A while ago, I built a prototype that did something somewhat similar with IPFS instead of blockchain. It also pinned the IPFS object automatically. It saved the entire tweet minus all mutable attributes (user info, retweet count, etc).

I didn’t think of using a twitter bot for archiving, that’s clever.

What is the size limit other than a tweet? Can it be expanded to articles? Also why? If twitter is down then I don't have the transaction id to look up the content.

I wish I could think of clever things like this.

Really $9 for infinite storage is a deal.

Does the service not restrict this to your own tweets? This could be a harassment tool potentially…

How? It's not like you're creating a billboard out of it... it'll be buried in the blockchain, and nobody will ever see it (unless you link to it).

What makes you think this could be used for harassment?

Recording something that someone puts on a public 3rd party doesn't seem like harassment. But maybe I'm missing something. How would the harassment work?

What fraction of miners accept non-standard transactions like this?

OP_RETURN is standard. So all of them.

It's part of the standard, but atypical and consumes block space. So there would be less incentive to include such transactions.

If you pay the fee, miners will accept it.

The miner doesn't care about wasting blockspace. It is simply an auction, where the highest payment per byte wins.

As far as I'm aware, all mining software (including Bitcoin Core) support it.

Thanks, i'll take a screenshot and store in google drive.

Cool concept but also very nice logo. Who made that logo?

What happens when bitcoin transaction fees spike again?

Then it will cost more.

GDPR anyone? lol

lol yeah, gonna make for an interesting court case in 2030 when someone cant scrub some heinous tweet from the blockchain :P

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