Quote from: malevolent on December 01, 2019, 12:17:54 AM

Quote from: dwrrwewerwrw on November 30, 2019, 11:30:51 PM

Please give me a list of individuals I could contact and companies. I now currently only have chainalysis.

Just google 'blockchain analysis' and a few will show up:

https://www.elliptic.co/
https://www.coinfirm.com/
https://www.scorechain.com/
https://crystalblockchain.com/
https://www.whitestream.io/

(there are or at least used to be more of such companies but some got bought out)

and maybe Kim Nilsson of wizsec: https://www.blogger.com/profile/00130450507411246919

thanks!

Quote from: nc50lc on December 01, 2019, 02:27:33 AM

Quote from: dwrrwewerwrw on November 30, 2019, 10:56:51 PM

Quote from: nc50lc on November 29, 2019, 02:38:09 AM

-snip-
Providing the transaction ID alone isn't that solid IMO, it's too easy "fake" the change address by using "coin control" or "pay to many" option/command.

I do not have anything left of Wallet A. I do have Wallet B in my possession.
So I do not know how to show the master public key without having anything left of wallet A. Anyway, I would need a pro to help me. I am really not experienced enough.

Hmm, like I said, it will be hard to prove that input1 and output2 (change address) belongs to walletA just from that single transaction.
ChainAnalysis and other pro blockchain forensics will basically do a guesswork here unless you have used those addresses together in one transaction (inputs).

Consider hiring another pro: Professional Data recovery; to be able to restore walletA from the drive where it was deleted;
if it's a hardware device, nevermind.

understood.
it is an usb pendrive. i will definitely hire a pro to do a data recovery.

Quote from: pooya87 on December 01, 2019, 04:48:24 AM

Quote from: dwrrwewerwrw on November 30, 2019, 10:56:51 PM

Quote from: pooya87 on November 29, 2019, 04:40:28 AM

~

that is correct. But i could at least show that the change addresses funded Wallet B and Wallet B is my possession. The scammer can not show anything. so at least I show something which correlates the coins back to me.

then you can only prove 2 things:
1. you own address B by signing a message using its private key (wallet is a total of many keys and their corresponding addresses. you send and receive bitcoin from one or more addresses and any proof that you can provide is from individual addresses)
2. you received coins from address A

Quote from: dwrrwewerwrw on November 30, 2019, 11:09:30 PM

3. your question for more details. my lawyer prohibited to post to much information publicly. so I will keep it very summarized.
A. Wallet A had a lot of coins.
B. I send from Wallet A out several transactions of which I do not exactly remember the order.
C. at one point in time I sent out 175 BTC to exchange X of my agent.
D. I then sent out from wallet A some BTC(amount unknown) to a few addresses.
E. I then emptied my wallet A and sent all BTC from wallet A to Wallet B
F. I then sent from wallet B to "exchange X" 275 BTC

I know that it should be possible to show that the the coins from wallet B came from wallet A who sent the 175 BTC to "exchange X". If can correlate this, then I have some evidence to show to the court that these coins were correlated to me and not to the scammer. I am the one who is suing.

you don't need to use chain analysis company for this. any block explorer website could be used to achieve this. you must first gather all the addresses that you know of and then search them one by one in a block explorer and see where the coins are coming from or going to.

for example you know your address(es) B and you know you initially send coins from your address(es) A to it. so simply search address(es) B in a block explorer, go to its first transaction and see what address is paying it. copy the corresponding transaction ID, that is your proof that B has received X amount of coins from A.
you know your exchange address(es) EX, do the same and look for address(es) B and A in it. each received transaction is one of your deposits. copy those transaction IDs. these are proofs of your deposits and their amounts.

here is an example block explorer link: https://blockchair.com/bitcoin/

I understand you. But to avoid mistakes and to have authority in the court I will hire a professional. but thanks for your input, it is appreciated.

Quote from: Coolcryptovator on December 01, 2019, 05:10:31 AM

If you do not have access of wallet A, then you can't prove that wallet was belongs to you. Whatever other evidence you will provide that's all are available on blockchain. So anyone could provide that to court. Only way to prove ownership without any risk is sign a message from the address. I don't know if OP mixing up wallet with address. But if you made transaction from wallet A then change address should belongs to wallet A, it will not go automatically on wallet B if you don't put address during transaction.

Can you describe which clients you had used ? And how you had lost access of your wallet A? The only perfect way to prove yourself is recover your wallet or private keys. I don't believe some other specialist could help regarding that issue without recover private keys or wallet. Otherwise everyone will call themselves satoshi nakamoto by provide evidence of related stuff without sign message. Because all transaction history stored on the blockchain. It's not enough to prove ownership.

Quote from: dwrrwewerwrw on November 28, 2019, 09:43:16 PM

I am in court proceeding and I need to show evidence that the change addresses of the 175 BTC (which were sent to that exchange) funded Wallet B.

So actually you need prove ownership of change address? If so, then you must have access your wallet or private key of that address. I think there is not such as any mark for change address on the blockchain.

So try to recover your wallet file or something related stuff that could help recover your wallet.

On the other hand you told you sent remain fund to wallet B from change address. Then why you need prove ownership of that address, as @AdolfinWolf said at end you may sign message from wallet B from where you sent fund to second exchange. That should be right way.

I understand what you mean. But In court I have a competing claim. If I can proof that the transactions of the 275 and 175 btc transactions are correlated and the scammer can not correlate anything then I do have a small success in court. but i do completely understand what you are saying. my first option is then also to do a data recovery which I try as we speak. I used an electrum wallet for wallet A by the way, and an electrum wallet for wallet B. unfortunately i was so stupid to delete wallet A from my USB pendrive because I completely trusted the scammer to pay me.