It IS significantly harder to retrieve and view images from witness data compared to OP_RETURN data:
Witness data is embedded in Taproot script-path spends
Spread across the witness structure in a specific encoding format
Requires specialized tools/indexers (like ord software) to:
Identify which transactions contain inscriptions
Parse the witness data structure
Extract and reassemble the content
Render it as viewable media
Not straightforward with standard Bitcoin Core RPC calls
OP_RETURN Retrieval:
Data is directly in the OP_RETURN output field
Simple hex-to-binary conversion
Easy to extract with basic Bitcoin Core commands (getrawtransaction)
Straightforward to decode and view
Much more accessible to anyone, including law enforcement
Legal Liability Implications:
This is actually a crucial distinction:
Witness data: "I'm running infrastructure; the data is technically there but deeply embedded and not easily accessible"
Large OP_RETURN: "I'm storing easily retrievable files that anyone can extract with basic tools"
From a legal defense standpoint, the accessibility and ease of retrieval matters for arguments about:
"Knowing possession" vs passive infrastructure
Whether you're acting as a "host" or just network infrastructure affects the likelihood of prosecution.
In reality, some government in the world that doesn't like their banking system being circumvented will prosecute a node runner. They will put them in prison in order to make an example. Other node runners around the world will be scared and will stop thinking full nodes. Decentralisation will be sacrificed for a change that never needed to be made.
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Full nodes are vital. Decentralisation relies on node protection, not their prosecution for embedded data. What does "knowing possession" mean on a global ledger?
Anything done using software is only “significantly harder” today… your argument is nonsense. Someone will build an easy way to view and decode data stored elsewhere and then what?
Legally you are hosting the blockchain, you neither uploaded the content nor do you know what content has been encoded to the chain. The chain can’t show you pictures it requires external software to do that. There is no legal justification for prosecuting a node operator. Any country that does persecute a node operator is not free and should be resisted with force.