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+# Contributing
+
+## Bumping the rapidsnark version
+
+The pinned rapidsnark version is the single source of truth in `RAPIDSNARK_VERSION` at the repo root.
+
+To bump it:
+
+1. **Update the `RAPIDSNARK_VERSION` file**
+   Set the new version (without the `v` prefix).
+2. **Build new Linux PIC archives**
+   Dispatch the `.github/workflows/build-pic-archives.yml` workflow.
+3. **Update `nix-hashes.json`**
+   Add a new entry for the version. For each platform, grab the zip's SHA256 from the GitHub release and convert it to SRI format:
+   ```sh
+   nix hash convert --hash-algo sha256 --from base16 --to sri <sha256>
+   ```
+4. **Update flake consumers**
+   In consuming repos, update the flake input's `ref` in `flake.nix` (if pinned to a specific rev) and run `nix flake update <input-name>` to update the lock file.