Re: The Cat, BIP draft discussion.

Posted by Jonathan Voss

Dec 17, 2025/16:22 UTC

In the ongoing discussion among developers regarding the handling of Bitcoin Stamps UTXOs within the blockchain, a notable concern has been raised about the potential risks associated with the proposal to drop these UTXOs from the UTXO set without implementing a consensus change. The crux of the argument centers on the innovative yet hazardous possibility that steganography could be employed to make certain unspendable outputs spendable. This manipulation could inadvertently lead to a bifurcation in the network. Such a fork would manifest between nodes that have implemented the Stamp pruning method and those that have not, especially in scenarios where one of these steganographically altered Stamps is spent.

The apprehension extends beyond the technical feasibility of this scenario to include considerations of the behavioral patterns observed within the Internet community. There exists a non-trivial probability that individuals, motivated by curiosity, malice, or a desire to demonstrate the exploitability of system vulnerabilities, might indeed facilitate such an occurrence. This potentiality underscores the importance of careful consideration and thorough scrutiny in the development process of blockchain technologies, particularly when modifications to foundational components like the UTXO set are proposed. The dialogue amongst developers, as captured in exchanges within platforms such as the Bitcoin Development Mailing List, highlights the intricate balance between innovation and security in the evolving landscape of cryptocurrency.

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