post-quantum: solution ideas to "tripwire"game-theory issues + a certificate-based rescue protocol

One innovative approach involves integrating a New UTXO Model Space (NUMS) point into the coinbase output, which acts as an intrinsic proof of work and could potentially increase the block's chain work significantly. This method suggests a shift in consensus mechanisms that do not solely depend on hash power dominance, thus reducing the risk of manipulation by powerful entities. Additionally, another strategy employs group signatures from post-quantum upgraded coins, using a novel Merkle tree within the block's commitment structure. This assigns a significant weight based on the quantum-resistant coins signed, exceeding a certain threshold to improve proof of work order and trigger a "tripwire." However, this also poses a risk of social manipulation where a majority might unfairly influence the activation of the "tripwire."

On the technical side, there is a discussion about leveraging the Bitcoin blockchain as a publication medium for certificates of discreet log knowledge, providing historical proof of ownership essential when traditional cryptographic methods fail due to quantum capabilities. This preemptive measure supports coin transfers aligned with post-quantum policies even after the "tripwire" is activated, addressing vulnerabilities among EC coin owners.

Furthermore, the implementation of a mining strategy including a "tripwire" proof offers a temporary difficulty advantage, deterring potential censorship by requiring adversaries to control a substantially larger portion of the hashrate. The idea necessitates a hard fork, presenting challenges like node updates and risks of early activation by dishonest minorities possibly influenced by corporate interests. An alternative User-Activated Soft Fork (UASF) could prevent miner collusion, although it introduces complications for nodes performing Initial Block Downloads or those reactivating after downtime.

Lastly, considerations for a soft-fork implementation were discussed, focusing on maintaining common block ordering for non-upgraded nodes. A super-majority of miners adopting the new mechanism could ensure minimal disruption, suggesting strategies like merge-mining to minimize equivocation during "tripwire" activation. BIP9's framework for multi-stage soft forks provides a structured approach to implementing these changes, emphasizing the need for careful planning and community consensus to address the risks associated with quantum computing advancements effectively.