Reiterating centralized coinjoin (Wasabi & Samourai) deanonymization attacks

The core of the query revolved around whether it is feasible to generate a new pubkey, referred to as p', that would not only validate a signature (s) signed by an arbitrary original pubkey (p) for a given message (m), but also validate both the original signature (s) and a new signature (s') for a different message (m'). The individual posing the question expressed skepticism about the feasibility of this within the Schnorr signature framework, while also acknowledging a lack of expertise in cryptography which might have overlooked pertinent details.

For further exploration or insights into this cryptographic quandary, the individual provided a link to Peter Todd's website (https://petertodd.org) and contact information, suggesting a pathway for interested parties to delve deeper into the subject or provide expertise. This discussion highlights a nuanced aspect of cryptographic theory and practice within blockchain development, reflecting the ongoing dialogue and investigation that characterizes the field's evolution.