SHRINCS: 324-byte stateful post-quantum signatures with static backups

Handling an increasing number of states for wallet addresses presents a significant challenge in the context of blockchain technology, especially when considering the implementation of SHRINCS. As users generate new wallet addresses, each associated state must be preserved to ensure future usability and integrity of transactions. This necessity arises from the unpredictability of which addresses will be reused, suggesting a default approach to retain all states indefinitely.

However, this approach raises practical concerns about scalability and efficiency. Storing an ever-expanding volume of state information could lead to unsustainable demands on resources. An alternative proposition involves discarding states after they reach a certain threshold of inactivity or age. While this could alleviate storage pressures, it introduces a cost consideration for users; transactions initiated from a "stateless" address, where the state has been discarded, may incur higher fees due to the additional overhead of re-establishing necessary state information.

The dilemma extends to the mechanics of state retrieval. In scenarios where state information is stored externally (e.g., encrypted within a file), there's a decision to be made between retrieving all states versus fetching only the specific state needed for a transaction. The former option ensures readiness but at the expense of efficiency and potentially security, as decrypting a large file to access a single state exposes more data than necessary. The latter, while more efficient and secure, might slow down transaction processing if states are frequently needed on an individual basis.

In summary, the management of growing numbers of states for wallet addresses within blockchain frameworks like SHRINCS poses complex challenges. These include decisions on whether to keep all states indefinitely or discard them under certain conditions, how to efficiently and securely retrieve states when needed, and the implications of these choices on user costs and system performance. The balance between resource efficiency, transaction cost, and operational speed remains a critical consideration in designing scalable and user-friendly blockchain systems.