# opentimestamps-client を Homebrew, Nix でインストール opentimestamps-client のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:opentimestamps-client ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install opentimestamps-client ``` 証拠: local Homebrew formula metadata ### Linux - Nix (92%): ```sh nix profile install nixpkgs#opentimestamps-client ``` 証拠: nixpkgs package indexes: pkgs/by-name/op/opentimestamps-client/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## パッケージ情報 - **パッケージキー:** brew:opentimestamps-client - **パッケージマネージャ:** Homebrew - **パッケージマネージャページ:** - **バージョン:** 0.7.2 - **ソース概要:** Create and verify OpenTimestamps proofs - **ホームページ:** - **上流ドキュメント:** - **ライセンス:** LGPL-3.0-or-later - **ソースアーカイブ:** - **最終更新:** 2026-08-04T11:58:02Z - **生成日時:** 2026-08-04T22:13:35+00:00 ## 実行可能ファイル - ots-git-gpg-wrapper (cli) - ots-git-gpg-wrapper (エイリアス) ## 依存関係 - certifi - python@3.14 ## インストール挙動 - post-install フック: 未定義 - Bottle: 利用可能 対象 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## バージョンと鮮度 - ページ生成日: 2026-08-04 - マネージャ版: 0.7.2 - マネージャ更新日: 2026-08-04 - ローカルデータ: OK - 上流リポジトリ: https://opentimestamps.org - 情報: Release/tag comparison is only available for GitHub repositories. ## プロジェクトの歴史と使われ方 OpenTimestamps Client is the Python command-line implementation for creating and verifying OpenTimestamps proofs. It anchors file and Git-commit timestamps to Bitcoin-backed attestations, producing small `.ots` proof files that can be checked independently later. ### プロジェクトの歴史 Peter Todd announced OpenTimestamps in September 2016 as a scalable, trust-minimized, distributed timestamping scheme using Bitcoin. The design separates the timestamp proof format from any single web service: calendars aggregate commitments, Bitcoin supplies the public time attestation, and clients can later verify proofs against the blockchain. The client repository packages the everyday tooling around that protocol: stamping files, upgrading pending timestamps, verifying proofs, and integrating timestamps into PGP-signed Git commits. The Git integration work targeted a software-supply-chain problem: a commit signature proves who signed a commit, while a timestamp helps show when that signature existed. ### 採用の歴史 OpenTimestamps appealed to users who wanted blockchain-backed proof-of-existence without putting whole documents on-chain or trusting a single timestamping authority. Public calendar servers made ordinary timestamp creation cheap and fast, while local verification with Bitcoin Core kept the trust model understandable for security-sensitive users. The client remained niche compared with general signing tools, but it developed a small ecosystem of protocol implementations in Python, JavaScript, Java, and Rust. Its strongest adoption story is in release engineering, archival proof, research-notebook integrity, and Git-history timestamping rather than broad consumer file sharing. ### 使われ方 Users run commands such as `ots stamp`, `ots verify`, and Git wrapper commands to create proof files, complete pending attestations, and check that a file or commit existed before a Bitcoin block time. Verification can use a local Bitcoin Core node, including a pruned node, so the proof does not depend on the original calendar server staying online. The package’s `ots-git-gpg-wrapper` executable is especially package-nerdy: it composes Git signing, GPG signatures, and timestamp proofs so release commits can carry both identity and time evidence. ### パッケージ好きにとっての重要性 This package sits at the intersection of packaging, cryptography, and reproducible provenance. It is small, but it gives maintainers a way to attach time evidence to source releases, commits, and artifacts without inventing a full transparency log. ### タイムライン - 2016-09: OpenTimestamps was announced as a Bitcoin-backed timestamping protocol. - 2016-09: Git integration was documented as a way to timestamp PGP-signed commits. - 2020s: client release notes continued to refine Git extraction, cache locations, timestamp display precision, and verification behavior. ### Related projects - Related projects include opentimestamps-server for calendar services, python-opentimestamps for protocol primitives, java-opentimestamps, javascript-opentimestamps, Bitcoin Core, GnuPG, and Git. ### ソース - - - - - - ## セキュリティノート opentimestamps-client に一致するローカルシークレット処理マニフェストは見つかりませんでした。将来の対応で安定したパッケージ URL を使えるよう、パッケージメタデータはここに公開されています。 ## ソースデータベース詳細 - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** opentimestamps-client - **Version Scheme:** 0 - **Revision:** 4 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## 他のパッケージマネージャ記録 - Nix - opentimestamps-client: normalized package name match | nixpkgs package indexes: pkgs/by-name/op/opentimestamps-client/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## 関連リンク - [Source-control packages](https://pkg.so/ja/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://pkg.so/ja/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Networking and protocol packages](https://pkg.so/ja/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [Security and crypto packages](https://pkg.so/ja/security-crypto-tools/) - Matched security, identity, cryptography, password, signing, or certificate metadata. - [python@3.14](https://pkg.so/ja/brew/python-3-14/) - Runtime dependency declared by Homebrew. - [smimesign](https://pkg.so/ja/brew/smimesign/) - Shares pkgdb curated category or tags: cli, git-signing, security. - [openssl@3](https://pkg.so/ja/brew/openssl-3/) - Shares pkgdb curated category or tags: cli, security. - [gnutls](https://pkg.so/ja/brew/gnutls/) - Shares pkgdb curated category or tags: cli, security. - [p11-kit](https://pkg.so/ja/brew/p11-kit/) - Shares pkgdb curated category or tags: cli, security. - [gnupg](https://pkg.so/ja/brew/gnupg/) - Shares pkgdb curated category or tags: cli, security. - [krb5](https://pkg.so/ja/brew/krb5/) - Shares pkgdb curated category or tags: cli, security. - [nettle](https://pkg.so/ja/brew/nettle/) - Shares pkgdb curated category or tags: cli, security. - [libcap](https://pkg.so/ja/brew/libcap/) - Shares pkgdb curated category or tags: cli, security. - [censys](https://pkg.so/ja/brew/censys/) - Both packages touch the same language runtime or ecosystem. Shared terms: certifi, cli, client, python, python-3-14. - [certbot](https://pkg.so/ja/brew/certbot/) - Both packages touch the same language runtime or ecosystem. Shared terms: certifi, cli, client, python, python-3-14. - [ggshield](https://pkg.so/ja/brew/ggshield/) - Both packages touch the same language runtime or ecosystem. Shared terms: certifi, cli, git, python, python-3-14. ## Combined YAML source View the package source record on GitHub. [combined/opentimestamps-client.yml](https://github.com/mxcl/pkgdb/blob/main/combined/opentimestamps-client.yml) ## ソース - pkg.so package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - pkgdb category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph