Topic: I wish to put a 5 mb file and preserve it on the blockchain, I will also pay. (Read 2391 times)

Maybe he is just another Edward Snowden who wants to save some goodies there :-)

Extremely good or bad things could be stored in this fashion. I wonder what would happen if someone stores something really bad (like nuclear secrets) in the blockchain...then we will find out how invincible the blockchain really is.  

One of the biggest drawbacks of Bitcoin is the size of the blockchain. If 1000 people also wanted to store a 5 MB file it would add another 5 GB to the already massive blockchain. The OP should consider an alt designed for storage like maidsafe or storj.

Check out - https://github.com/openname/blockstore

Factom can *secure* the data, so you can validate and verify data in the future.  It would be expensive to try and store 5 Meg into Factom.  1K = .1 cents, so about $100 dollars to put 5 Meg into Factom.  Then you would need a app to break up your data into ~10K chunks and reconstruct them.

Thanks for the good read, funny to see people even having conversations hidden in the blockchain. Very cool how you can embed stuff in the blockchain hidden in plain site. There is some code for storing and removing some files from the blockchain.

The purpose of this actual bitcoin blockchain is not to "store" a large file, but only a max. of 40 byte of data (like someone has said in the previous posts). If the OP wants to store 5 Mb in one transaction then it will be impossible for the moment (due the limit of the block size ~ 1 MB) maybe in the future if the block size will rise to 10 or 20 MB someone can start "to think" about this function.

Remember that your file will be on each device/pc that has downloaded the entire blockchain (so it could be better to protect it with a password, but if the OP wants to save a file on the bitcoin blockchain then it means he want that information will be "public").

http://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html

And how would this work anyways, you can't "download" txs or something like that, theres no file storage availability in bitcoin, maybe to store small text or something than yea but how would you store a file like an image or video??

any whim for your money 

This is actually insanely expensive. 1mb is 1000 kb, so that would be multiplied by 5000, so would be 0.5 btc, about 150 US dollars, to store one file...

1) Do you want to place this file as one piece? (This is not possible today)
2) Do you agree if the data in this file will be split for several (a lot number) pieces?
3) How much can you pay for it? (Today 1kb costs 0.00001...0.0001 btc. So, 5 mb is not very expensive, but not free)

What is this website? Is it just scraping all txs for messages? I can't really see but it seems like just a big bitcoin message list.

I have no affiliation with this website but perhaps something like this would more feasibly suit your needs:

http://storj.io/

Right now it looks like they are still in beta testing but they hope to accomplish the very goal you are trying to achieve.

...

bitproof.io will hash just about any document and place it on the blockchain.  They also store the original at their website.  Here is an experiment that I recently did, making a document with a photo, some links and a small table of data from MS Excel.  Total size of the document is +/- 530 KB.  The doc can be found here:

https://docs.google.com/document/d/1M-vO0h0W_nLy-Z1Sz8xiYAhaCbmTMThL8FnW7hcoCkw/

I hashed that with bitproof, they placed it (the hash) on the blockchain, and my document is also at their website, it can be opened by the account owner at bitproof (in this case me).

You also need to have the document stored on your (local) computer to hash it, at least for now.

Here is the transaction no. on the blockchain to see what bitproof.io did:

f33e63974710ea830cb8d5126afbac14b1f5dd3ee3a4dc33cb9e4fba59697aaa

If you view this with blockchain.info, you can see the interesting looking coding (near the bottom of the page) for the "OP_RETURN" output mentioned above.

So, by hashing your document (can be large, makes no difference), and placing the HASH on the blockchain (a similar service is offered by proofofexistence.com), and putting in one or more links to whatever it is you want preserved (at Google Docs, Dropbox, etc.).

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Someone (IMO) is going to make a lot of money doing this...

factom.org looks like the big player in this space as of now.

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Re paying something, bitproof may (or may not) ask for a small fee, they are a new service.  You could also pay (donation) to the Bitcoin Foundation (working on enhancing Bitcoin) or even a small donation to one or more miners (I am going to try and do all of this the next time I put up a doc on the blockchain), probably the key players most affected by "blockchain bloat" feared by the purists...

Would it be possible to create an altcoin with a blockchain capbable of holding a 5mb file at a time?

Look into the Factom project. I believe what they are doing will solve this problem.

Maidsafe will solve problems like this in the future, decentralized file storage is finally here, no need to mess with the blockchain.

That's a great idea when clone technology is ready in future, but maybe winklevoss twins can afford that 

A blockchain could be a brilliant way of preserving family traditions. Like if you could get your dad to screw a dog and then you also find a dog to screw, the photos of each could be separate events. You could be the first on the chain of a family tradition that goes on for thousands of years. You don't have to involve your parents with it, but they could think badly of you for seeking family fame and not including them. A family tradition can help keep a family together.

Perhaps a better solution might be Google's Nearline or Amazon Glacier.  With Nearline, at a penny/month/gigabtye, you could prepay 12000 months (1000 years) for about $120.  (Assuming they are still around then, allow it etc).  Or use both, plus Microsoft's version, a torrent, and Freenet for ultimate redundancy.

Then encode a link in the blockchain, or a proof-of-existence etc.