Bitcoin Forum

hello guys ,
i just wanna know what are all the file types ( extensions )  of bitcoin wallets used by bitcoin clients !
we all know : .dat =) used by bitcoin core  &  aes.json =) used by blockchain.info
but i wanna know all the other extensions that are probably being  used  by other clients !!!? ( especially online ewallets ) !!

File extension has no relevance in bitcoin wallets. It can be any format. It's just a file which stores details like private key, public key etc. As a wallet developer, I can store keys and data in any format. It basically depend upon the security level and more on how my application is made and how it fetches the data for signing and verifying transactions.

okky , that's a great answer mate !
But i just wanna know what are  the common ones used by bitcoin developers in online wallets clients  at the beginning of bitcoin ( 2009-2012 ) !!!
 

I am wondering why you keep on asking those Bitcoin wallet file extensions mate? What are doing with those files if you don't mind? It's just weird that your asking questions about that thing since google is free and broad. Are you some sort of a dev or something?

I don't think this helps but kindly check:
https://en.bitcoin.it/wiki/Wallet

Can you tell the exact purpose for which you are asking this question because I still find your question vague. File extension is highly subjective matter and differs from wallet to wallet, for example Electrum wallet file doesn't even have the extension. By the way, this page covers wallet formats for few notable wallets: https://en.bitcoin.it/wiki/Wallet

And what exactly do you mean by 'online wallet'? All wallets need to be online to broadcast the transaction. Or do you mean 'web wallet'? In that case, unlike blockchain.info, most of the web wallets are custodial wallets and don't create wallet file for users. They rather save users' keys in centralized database. Moreover, I doubt whether there were many notable web wallets in 2009-2012 period.

Anyhow, you need to be more clear with your question and tell us what exactly are you trying to achieve to get more relevant answers.

Yes i mean Web Wallets ... and as i mentioned in another reply .. am trying to gather information about bitcoin wallets  for business security  purposes , and am stucking in a step called  : '' all possible Bitcoin Wallet known file formats and their structures "

Blockchain.info is the online wallets around that time that used file to save wallet data some like coinbase use seed or recovery seed same as blockchain.info way back there also the andreas schildbach’s android wallet which use the same as core .dat file IIRC.