Post
Topic
Board Development & Technical Discussion
Topic OP
Strange Null Data (OP_RETURN) Transactions
by
Security Engineer
on 29/08/2019, 23:55:37 UTC
Hello,

I have noticed thousands of Null Data (OP_RETURN) Transaction and these transactions sometimes have milliseconds between them always sending the exact same amount of bitcoins which makes the transactions identical.

I have searched before for repeated R values and I think this null data transactions are very strange.

I have extracted data from these transactions but I was failed to identify what kind of string they are. I see in thousands of transactions.

As I said everything in the transaction is identical except the data which looks like this:

Transaction 1:
Data 1: kkjtdb3vja6bzo42uqe5spjqbahvowoqjkb8fzbu56ffff4ta6vr2ag74c36ezgrindxecwpx8shggyq6vk8potpkhbeya4r

Transaction 2:
Data 2: kkjtdb3vja6bzo42uqe5spjqbahvowoqjkb8fzbu56ffff6vwtuh2bzvojmmdbxk347hfo95nhzsqiopkfb6pr7zdgmqcw

As you see the half of the data is the same. It is 92 character long and the first 46 of that is always the same in every transaction.

In other words everything exactly looks the same in different transactions except the last 46 character of the unidentified string in data.

I have that feeling that this is similar to the repeated R values but maybe I'm wrong that is why I asking here.

I currently targeting the address which sent these transactions because there is 7 BTC left on that unused address.

Thank you