[BIP Proposal] Limit ScriptPubkey Size >= 520 Bytes Consensus.

The discussion revolves around a Bitcoin Improvement Proposal (BIP) to limit the size of scriptPubKey to a minimum of 520 bytes. The proposal aims to address the absence of real-world applications for scriptPubKeys larger than this threshold, as highlighted by the data shared within the conversation. However, concerns are raised regarding the potential increase in the creation of OP_RETURN outputs as a consequence of implementing such a restriction.

The conversation further elaborates on the implications of this change on the Unspent Transaction Output (UTXO) set and the economic aspects of using multiple OP_RETURN outputs. It is pointed out that while restricting the size of scriptPubKey to 520 bytes would not directly affect the UTXO set, it could lead to higher costs associated with the use of multiple OP_RETURN outputs. This could, in turn, economically discourage the practice among users.

The dialogue underscores the difficulty in predicting future usage patterns of scriptPubKey sizes and emphasizes the importance of considering the broader impact of such technical adjustments. The exchange of views suggests a cautious approach towards modifying consensus rules, especially given the unpredictable nature of technological evolution and user behavior within the Bitcoin ecosystem.