opentimestamps SKILL.md skillA
opentimestamps from brenorb/freedom-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add brenorb/freedom-skills/opentimestamps@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- brenorb/freedom-skills
- Path
skills/opentimestamps/SKILL.md- Versions recorded
- 1
- Latest version
- v0.1.0, committed Sep 17, 2026
- Size
- 4,067 bytes
- Repository stars
- 20
- License
- none declared
Use this skill when the user wants to timestamp a local file with OpenTimestamps or opentimestamps.org, generate or inspect a `.ots` proof, upgrade a pending proof, or verify that a file digest was attested in Bitcoin from the command line or the public website.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# OpenTimestamps Use the bundled wrapper around the official OpenTimestamps client to stamp local files, inspect `.ots` proofs, upgrade them when remote calendars have new attestations, and verify them against Bitcoin-backed timestamps. ## Available operations Choose only the operation the user requested. These commands are independent; do not run stamping, inspection, upgrading and verification as a fixed sequence. 1. Stamp the local file with the bundled wrapper: ```bash python3 skills/opentimestamps/scripts/opentimestamps.py stamp \ --input /absolute/path/to/document.pdf ``` 2. Read the JSON result: - `timestamp_path` is the generated `.ots` proof, defaulting to `<input>.ots`. - `submitted_calendars` lists the remote calendars that accepted the proof request. 3. If the user wants to inspect the proof tree or confirm whether it is still pending, inspect it: ```bash python3 skills/opentimestamps/scripts/opentimestamps.py info \ --timestamp /absolute/path/to/document.pdf.ots ``` 4. If verification fails because the proof is still waiting on Bitcoin confirmation, upgrade it later: ```bash python3 skills/opentimestamps/scripts/opentimestamps.py upgrade \ …
Read the whole file at its exact version.
How to install
mdr add brenorb/freedom-skills/opentimestamps@sha256:df913c1e79d51d5cThe line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_qpi7ppp5x6hgryes)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 17, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4067 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
brenorb/freedom-skills · 20 stars · license none declared · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qpi7ppp5x6hgryes GET https://markdownregistry.com/api/v1/resolve?ref=brenorb/freedom-skills/opentimestamps GET https://markdownregistry.com/api/v1/blob/df913c1e79d51d5ceffe6fdfd70e9c8d127955d2f88e6e9f3d2a14b1e639ed10
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.