Bitcoin Forum

Hey all,

Found a few mails I sent to myself in 2013.
They contain a 64 hex characters string
And a weird 40 character string with full Alfabet used and separated into 5 blocks of 8 characters with dashes.

Fake example: WMB365YW-KV177RT7-25402OBV-5S8L0UI8-W23O0WSB



Just making a WIF from the 64 character strings shows only empty wallets for btc/ltc/BTg and whatever was available in 2013.

I think that weird 40character thing has something of value but can’t get any clues.

Any ideas ? Thanks a lot

It makes me think of an old blockchain.com wallet identifier... Not sure if the format is 100% correct tough, but those groupings with dashes in between bring back those memorys...

I used to have a blockchain.info account but it was with an old email address that doesn’t exist anymore. And when trying to log in it immediately asks me to verify email so I can’t check that

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Also if I copy this thing it says invalid wallet id , so it's probably not from blockchain.info

Try to turn this into a WIF private key through brainwallet, you might have used it: https://brainwalletx.github.io/ (https://brainwalletx.github.io/)
I'd recommend to use it offline.

Which address (script) types have you tested so far?
Have you already tried both compressed and uncompressed WIF?

I've used iancolemans offline and tried to use it on the most common coins back in those days, compressed/uncompressed.
all empty addresses come from it.

I've got a mail or 2-3 like this  each with a pair of the weird thing and the 64hex string. so they must be related somehow I think.

Back then, it was blockchain.info. I have a wallet identifier like this: 12345678-1234-1234-1234-1234567890ab (I've only counted the characters between the dashes, it has both numbers and lower-case characters (hex). OP's string looks different.

Just in case: I used to access the wallet through this URL: https://blockchain.info/wallet/12345678-1234-1234-1234-1234567890ab, which doesn't exist anymore. But with this wallet identifier and my password I can still login to blockchain.com. I've never used the wallet to receive anything, so I can't verify if it's really still the same.

Yes, with my strings it says invalid wallet identifier.

Any other ideas / sites from back in 2013 or earlier ?

Sorry, I wasn't around in Bitcoin at that time. If you figure it out, I'd love to add it to my [overview] Recover Bitcoin from any old storage format (https://bitcointalk.org/index.php?topic=4959742.0).

Perhaps the 64-character hex string is the SHA256 sum of the "weird" alpha-numerical string, used as a checksum.
That wont tell what the weird string is, however, if it's true, then you can deduce that the 64-character string isn't a private key.

When it's figured out you may definitely add it to you thread. I went through it and it's very comprehensive.

I was thinking something down that trend as well at one point, but more the other way. That i need to do something with the "weird" string to the 64 character to reveal the true private key or something.

It's also possible this was from Litecoin or so and not bitcoin. so maybe another website/wallet service used. But it's too long ago. and don't remember. Would've had some importance I think, otherwise wouldn't have mailed it.

Certainly not any sort of wallet or key identifier that I have ever seen before... ??? :-\

It's possible that the website or service you used for generating them was using them as some sort of extra encryption or recovery mechanism or custom transaction identifier... but without knowing what the website/service actually was, it's going to be mighty difficult figuring out the process required.

And your mails didn't include anything like addresses or transaction IDs? Just the 64 char hex string and the 40(5x8) char string? ???

indeed. it's a mystery at this point :/ :)

if anyone could recognize that 40 char thing might get a new lead on something.

https://en.wikipedia.org/wiki/40-bit_encryption

are you sure you'd made wif from 64 in a right way? or it goes as a alfanum string seed?