Thread

Some people seem to want to argue that there is already CSAM in Bitcoin's blockchain. This is false. Bitcoin today does not support images at all - only arbitrary data up to 80 bytes (or 95 in the coinbase). Exploits like "Inscriptions" work by _misinterpreting_ script code, and _bypassing_ existing policy rules. They are not actually storing images, but merely putting gibberish code on the chain, which they later themselves (not Bitcoin) _misinterpret_ as images. This distinction is very real and relevant. If you don't differentiate between "data that can be misinterpreted to produce CSAM" and "data that correctly interpreted displays CSAM", then literally _all data_ is CSAM, with _no exceptions at all_. This tweet would be CSAM. Google's logo would be CSAM. Your phone's operating system would be CSAM. Literally anything _can_ be misinterpreted as CSAM.

Replies (46)

↩ replying to BlackBlot
So he’s a loser. And a bad one. Got it. #CryHarder @npub1lh27...a9nk You want a #blockchain #war and refuse to speak with others … your reckoning is coming 1. You don’t mess with *anyone* in #Bitcoin and expect to undermine them A. Luke did. 2. Luke was given multiplicity of chances to be a man and admit he was wrong on multiple things. He declined. 3. #Satoshi stood for far more than this callous tiny acorn ever will.
image image image
This feels like a distinction without a difference. All image data is always stored using a set of formatting and storage rules. I agree that they used processes within the bitcoin script that were not intended to be used that way. But that doesn’t change the fact that images can be stored on the blockchain using that “misuse” of bitcoin script.
↩ replying to hodlbod
If someone obfuscates data that software prevents when not obfuscated, that absolves the software of liability for the obfuscated data. It would be considered an exploit of the software, not a feature. For example: If a website allows users to upload and store text files but blocks video and and music files, and a user decides to upload text files containing base64 encoded video files in parts with the titles of the text files establishing the order that when joined back together can with some effort be parsed back into a playable video. This doesn't mean the website is allowing video uploads now. The user doing so is exploiting the terms of the website. That's very different from a site owner saying "well people are going to upload text encoded video files in pieces and we can't stop them, let's just allow video file uploads". Now they have some obligation to run scans on the video uploads for illegal content and have to have to update their terms of service to make the users agree not to upload illegal video content etc. Simply preventing the video uploads in the first place prevents them from having to deal with that liability. This is how I interpret what Luke is saying here. It doesn't seem stupid at first face--how are you reading it that it seems stupid?
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So here's an example for how to read image from witness inscription (I promise it's not CSAM): bitcoin-cli getrawtransaction "584b6d204fcf6e2a3dd82a9adc55890447a09b534ab7d725a7353aecf547bcbf" 1 | jq '.vin[0].txinwitness[1]' | awk -F '0063036f726401010a696d6167652f776562705202' '{gsub("4d0802", "", $2); print substr($2, 7)}' | xxd -r -p > test.webp View quoted note →
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> Bitcoin today does not support images at all Are you suggesting v30 and higher will parse the uploaded images at the client level? I thought the Bitcoin Core GUI is strictly a wallet/block explorer interface and shall never render or interpret image data contained in blockchain transactions.
Bitcoin does not intentionally support images, but intentions many times depart from reality. Unintentionally supporting arbitrary data, IS a way to support images, among other things. And yes, many arbitrary data storage solutions indirectly support images, including for sure a phone's OS, among other devices. And some images can fall into the CSAM category, thus being illegal. It seems unnecessary to force arguments to deny the obvious.
Quit exploiting everyone’s over CSAM 1. You weren’t bitching at all when everybody was putting pictures Trump on there. 2. You just don’t want the EPSTEIN FILE on #blockchain 3. You had your chance, get ready to burn. 🔥