OTSkit Skills

Immutable. Verifiable. Forever. — Agent skills for digital preservation anchored on the Bitcoin blockchain via OpenTimestamps.

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What is this?

OTSkit Skills lets your AI agent preserve any file or folder as a standards-compliant archive and anchor its hash to the Bitcoin blockchain — creating a tamper-evident, cryptographically verifiable proof of existence that requires no trusted third party.

Say "preserve this" or "stamp this folder" and the agent handles the rest.

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Skills

Skill	Agents	Description
preserve	Claude Code · Codex	BagIt preservation packages anchored to Bitcoin via OpenTimestamps

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What it produces

Every preservation run delivers four portable, self-contained files:

File	Purpose
.zip	BagIt package — payload + fixity manifests + PREMIS metadata
.sha256	SHA-256 of the ZIP (what was submitted to Bitcoin)
.ots	OpenTimestamps proof file — portable, verifiable offline forever
.stamp-id.txt	OTSkit stamp UUID for MCP lookups and upgrades

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How to install

Via Smithery:

npx -y skills add https://smithery.ai/skills/otskit/preserve

Via Claude Code plugin marketplace:

/plugin marketplace add OTSkit/OTSkit-skills
/plugin install preserve@otskit-skills

Then trigger the skill with natural language:

"preserve this" · "stamp this folder" · "archive this document" · "create a preservation package"

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Requirements

• @otskit/mcp MCP server configured in your agent
• PowerShell (Windows) or bash (Linux/macOS)

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Standards

Standard	Role
BagIt (RFC 8493)	Package structure and fixity manifest
OAIS (ISO 14721)	Preservation metadata model
PREMIS 3.0	Event and agent provenance
OpenTimestamps	Bitcoin blockchain anchoring