> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# op-reth proofs

Manage storage of historical proofs in expanded trie db in fault proof window

```bash theme={null}
$ op-reth proofs --help
```

```txt theme={null}
Usage: op-reth proofs [OPTIONS] <COMMAND>

Commands:
  init      Initialize the proofs storage with the current state of the chain
  backfill  Backfill proofs history to an older earliest block
  prune     Prune old proof history to reclaim space
  snapshot  Build or drop the trie-state snapshot
  unwind    Unwind the proofs storage to a specific block
  help      Print this message or the help of the given subcommand(s)

Options:
  -h, --help
          Print help (see a summary with '-h')

Logging:
      --log.stdout.format <FORMAT>
          The format to use for logs written to stdout

          Possible values:
          - json:     Represents JSON formatting for logs. This format outputs log records as JSON objects, making it suitable for structured logging
          - log-fmt:  Represents logfmt (key=value) formatting for logs. This format is concise and human-readable, typically used in command-line applications
          - terminal: Represents terminal-friendly formatting for logs

          [default: terminal]

      --log.stdout.filter <FILTER>
          The filter to use for logs written to stdout

          [default: ""]

      --log.file.format <FORMAT>
          The format to use for logs written to the log file

          Possible values:
          - json:     Represents JSON formatting for logs. This format outputs log records as JSON objects, making it suitable for structured logging
          - log-fmt:  Represents logfmt (key=value) formatting for logs. This format is concise and human-readable, typically used in command-line applications
          - terminal: Represents terminal-friendly formatting for logs

          [default: terminal]

      --log.file.filter <FILTER>
          The filter to use for logs written to the log file

          [default: debug]

      --log.file.directory <PATH>
          The path to put log files in

          [default: <CACHE_DIR>/logs]

      --log.file.name <NAME>
          The prefix name of the log files

          [default: reth.log]

      --log.file.max-size <SIZE>
          The maximum size (in MB) of one log file

          [default: 200]

      --log.file.max-files <COUNT>
          The maximum amount of log files that will be stored. If set to 0, background file logging is disabled.

          Default: 5 for `node` command, 0 for non-node utility subcommands.

      --log.journald
          Write logs to journald

      --log.journald.filter <FILTER>
          The filter to use for logs written to journald

          [default: error]

      --color <COLOR>
          Sets whether or not the formatter emits ANSI terminal escape codes for colors and other text formatting

          Possible values:
          - always: Colors on
          - auto:   Auto-detect
          - never:  Colors off

          [default: always]

      --logs-otlp[=<URL>]
          Enable `Opentelemetry` logs export to an OTLP endpoint.

          If no value provided, defaults based on protocol: - HTTP: `http://localhost:4318/v1/logs` - gRPC: `http://localhost:4317`

          Example: --logs-otlp=http://collector:4318/v1/logs

          [env: OTEL_EXPORTER_OTLP_LOGS_ENDPOINT=]

      --logs-otlp.filter <FILTER>
          Set a filter directive for the OTLP logs exporter. This controls the verbosity of logs sent to the OTLP endpoint. It follows the same syntax as the `RUST_LOG` environment variable.

          Example: --logs-otlp.filter=info,reth=debug

          Defaults to INFO if not specified.

          [default: info]

Display:
  -v, --verbosity...
          Set the minimum log level.

          -v      Errors
          -vv     Warnings
          -vvv    Info
          -vvvv   Debug
          -vvvvv  Traces (warning: very verbose!)

  -q, --quiet
          Silence all log output

Tracing:
      --tracing-otlp[=<URL>]
          Enable `Opentelemetry` tracing export to an OTLP endpoint.

          If no value provided, defaults based on protocol: - HTTP: `http://localhost:4318/v1/traces` - gRPC: `http://localhost:4317`

          Example: --tracing-otlp=http://collector:4318/v1/traces

          [env: OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=]

      --tracing-otlp-protocol <PROTOCOL>
          OTLP transport protocol to use for exporting traces and logs.

          - `http`: expects endpoint path to end with `/v1/traces` or `/v1/logs` - `grpc`: expects endpoint without a path

          Defaults to HTTP if not specified.

          Possible values:
          - http: HTTP/Protobuf transport, port 4318, requires `/v1/traces` path
          - grpc: gRPC transport, port 4317

          [env: OTEL_EXPORTER_OTLP_PROTOCOL=]
          [default: http]

      --tracing-otlp.filter <FILTER>
          Set a filter directive for the OTLP tracer. This controls the verbosity of spans and events sent to the OTLP endpoint. It follows the same syntax as the `RUST_LOG` environment variable.

          Example: --tracing-otlp.filter=info,reth=debug,hyper_util=off

          Defaults to TRACE if not specified.

          [default: debug]

      --tracing-otlp.sample-ratio <RATIO>
          Trace sampling ratio to control the percentage of traces to export.

          Valid range: 0.0 to 1.0 - 1.0, default: Sample all traces - 0.01: Sample 1% of traces - 0.0: Disable sampling

          Example: --tracing-otlp.sample-ratio=0.0.

          [env: OTEL_TRACES_SAMPLER_ARG=]
```