Alright, it's 1230 in the after noon. I'm going to bed. I'll dump what I got- just remember me when you're rolling around in tall that BTC
**sniff**
7:51 - my hunch for this for a long time was that it was "Bit Sha"(7 characters) followed by it's private key(51 characters). I tried like a million times and it wouldn't work. I tried so many variations. No dice.
"Bit Sha" - Bitcoin and Shacoin are both things. But so is Catcoin, which if you couldn't tell, is pretty relevant to the image. All of these are 7 charaters long as well. I tried variations of "Bit Sha Cat" and the such with combos of hashes but had no luck.
I tried most every variation of the previous followed by their priv key equivalent as well as the img file's hash/priv key.
Just in case some of y'all don't follow- Take any data >> SHA-256 >> Base58check >> Private Key
As for the Catcoin, I couldn't find anything that led me to a transaction or block or any such that had a clue. Catcoin uses scrypt to hash and I didn't even bother looking into it, so maybe there's something there(prolly not).
Here's a list of a small portion of stuff I tried so you can get an idea of what I was going for.
Bit Sha5KJEqDSGVn7Y334Rr8A8s87bSDvf5sBs8uxG2NHogXtFRAqVEkw
Bitcoin5KBZytdkzttdedEB7xLom6YnHRCVTNQPUrJiTDJKS7VJUbiX6Di
Shacoin5KEPMxXf7T1J6aK6PBoimHri1H3KYfVB9n7mK7vTeczZcE4MGqK
The Con:5JkBShdYBVKNsAxBZsYgLhecjkzcVNL9DsHKHxzoUAt4CAcQAXe
Chessur:5J11eCUzLZjx8BtcdJ8LDhgztRrcp4TH1FxYE58N1NTE3WKnHPT
Chessur5J11eCUzLZjx8BtcdJ8LDhgztRrcp4TH1FxYE58N1NTE3WKnHPT
Bit Sha:5J11eCUzLZjx8BtcdJ8LDhgztRrcp4TH1FxYE58N1NTE3WKnHPT
Bit Sha5J11eCUzLZjx8BtcdJ8LDhgztRrcp4TH1FxYE58N1NTE3WKnHPT
Chessur:5KJEqDSGVn7Y334Rr8A8s87bSDvf5sBs8uxG2NHogXtFRAqVEkw
Chessur5KJEqDSGVn7Y334Rr8A8s87bSDvf5sBs8uxG2NHogXtFRAqVEkw
The Cat:5Kk1tMyDDbmmP89NaMTX4FV5KMMmysCc1p3PowbnW2yQejbajmu
The Cat5Kk1tMyDDbmmP89NaMTX4FV5KMMmysCc1p3PowbnW2yQejbajmu
Carroll:5Jie2RaW6UqsGp1oYDqLkX3SkGaRVKkJjLCNzN6nzL51eksxh8S
Carroll5Jie2RaW6UqsGp1oYDqLkX3SkGaRVKkJjLCNzN6nzL51eksxh8S
Address:5JUaEqABgKxf99DnnpfdNNdGrhSFvJAtqYT6cnjF9mbw6YrGMEs
Address5JUaEqABgKxf99DnnpfdNNdGrhSFvJAtqYT6cnjF9mbw6YrGMEs
256 Sha:5J4UxBA5nNBdkCn7ggb6dD1Pc6WkQLhb2AHh2SdtQumS4bDcsau
256-Sha:5Hymxfh7z3NhYRPhPBRkUW9uFtdtTfUA5ZbTn1LgvUSjcVnYJUn
256-SHA:5Jp9PoFDepFPxZeRWXf4tiYJLwuRtYFdDYYrGJjyFwCEp944eMU
256 SHA:5JX8PbsLVpUwgy5gEkQJYS1wguGokBfeYRYgY6re91rcpi43QeC
SHA-256:5KF13kQeQEYy9gcY6vrSzWLp1QcMdzic9Sc6qGEHCyrXdDZyeSu
256 Sha:5HuaQxr7ZE25zSXyBoAK3VkHMfEaE3aB5S8JMd71oAMwYvb24Nz
256-Sha:5HuaQxr7ZE25zSXyBoAK3VkHMfEaE3aB5S8JMd71oAMwYvb24Nz
256-SHA:5HuaQxr7ZE25zSXyBoAK3VkHMfEaE3aB5S8JMd71oAMwYvb24Nz
256 SHA:5HuaQxr7ZE25zSXyBoAK3VkHMfEaE3aB5S8JMd71oAMwYvb24Nz
SHA-256:5HuaQxr7ZE25zSXyBoAK3VkHMfEaE3aB5S8JMd71oAMwYvb24Nz
384 SHA:5JvBE7U11zLDBxkXqFuhGUHrYg7uAKDmiqfxXhPLsj1f6TsWe7z
384-SHA:5KkPMwYKFN8JxpUJz6UwRphGZA8rpSGhaG3ZXKW4Uot7QEKyQJA
384 SHA:5KCU29R6rxm46veFQtgdUGx8jR4UMHtM2YjwYthR7xqg676NEes
384-SHA:5KCU29R6rxm46veFQtgdUGx8jR4UMHtM2YjwYthR7xqg676NEes
512-SHA:5JWSU47Q8ZZVruqmBPMDzGjgeMrevSmNRsyvv6LrGVg6uSLHRDs
4352372:5KfFmNkmr1R5j1DPrgRbiXQxeUJt6YBQhahMR8tsGRXk3srq8u7
4415860:5JNCEcdGpSdUuUdBm31L9x6kYv9xBgN1TN5LYvdn1tEX2HYd7wb
4415860:5KUcdjkpXmCSzLyZRTLU5YBJpB3oSXSf8qc17bRxNqmZmh366Ah
Oh, and surely some one else has noticed that the file size for this little jpg is 1.21mb right? I turned it into an audio file and found nothing. Checked the hex, ran steno tools on it and couldn't come up with anything. But then I noticed that after saving/moving/copying/whatever the file size dropped to 600kb. Perhaps the false file size is part of clue?
I don't know anymore.
Good night and good luck.