# Reproducibility You will have identical archives with identical CIDs if you generate archives from the same RocksDB ledger. However, because transaction logs are included in the Old Faithful output, we cannot guarantee reproducibility across two RocksDB ledgers. For example, if you have two warehouse nodes generating Old Faithful archives from their local snapshot state, these may produce different transaction execution logs. This could happen, for example, if the two nodes run different Solana versions. The execution logs from the transactions are not validated and are not part of the validated set of the blockchain. They are metadata produced during the transaction's execution by the node executing them. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.old-faithful.net/usage/validation/reproducibility.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.