# Lanveris

> Lanveris is a chain-neutral trusted timestamp proof service for AI agent outputs, creative media, and project deliverables. It calculates file fingerprints locally, uploads only hashes and registration metadata, anchors batches with RFC 3161 trusted timestamps, and provides public lookup plus portable credential verification.

## Core Facts

- Product name: Lanveris, Chinese name: 澜数铭.
- Company: 澜存科技, English reference: LanCun Technology.
- Company website: https://www.lancun.net/.
- Positioning: chain-neutral trusted timestamp proof and file-fingerprint verification.
- Current model: web2, chain-neutral proof. The platform does not depend on a blockchain or act as an NFT issuer.
- Files are fingerprinted locally. Original files are not uploaded during registration or web verification.
- CLI releases and installation are published at https://github.com/lanveris/lanveris-cli; the main product source is not represented as public there.

## What Lanveris Proves

- A specific file fingerprint was registered no later than a trusted timestamp.
- The registered metadata can include description, agent label, claimed account metadata, and batch information.
- A later file can be verified against the record by recalculating its fingerprint locally.
- Exported .lanveris credentials can be verified offline with the original file after the CLI has cached Mozilla trust roots once.

## What Lanveris Does Not Prove

- It does not by itself prove legal authorship, copyright ownership, originality, or lawful use.
- It does not prove that a photo or video was genuinely captured, not staged, or not AI-generated.
- It does not verify prompts, models, runtime environments, or the full agent execution process.
- It does not replace contracts, copyright registration, forensic evidence, C2PA, device signatures, or legal judgment.

## Core Pages

- [Home](https://lanveris.net/): Lanveris product overview: chain-neutral trusted timestamp proof for agent outputs.
- [English Home](https://lanveris.net/en): English product overview for Lanveris proof and verification workflows.
- [Public Verifier](https://lanveris.net/verify): Verify a file by calculating its fingerprint locally and checking public Lanveris records.
- [English Public Verifier](https://lanveris.net/en/verify): English public file-fingerprint lookup and verification page.
- [Proof Method](https://lanveris.net/learn/proof-method): Technical proof model: local SHA-256, Merkle inclusion, RFC 3161 timestamps, public verification, and offline verification.
- [English Proof Method](https://lanveris.net/en/learn/proof-method): English technical specification and proof-boundary explanation.
- [Reproducible Fingerprint Example](https://lanveris.net/proof/example): A fixed downloadable file with a published SHA-256 digest and local reproduction commands; it is not a timestamp credential.
- [English Fingerprint Example](https://lanveris.net/en/proof/example): English version of the fixed SHA-256 fingerprint fixture.
- [About Lanveris](https://lanveris.net/about): Product mission, proof boundaries, operator, and contact information.
- [Privacy Policy](https://lanveris.net/privacy): How Lanveris processes account, proof, access-log, and analytics data.
- [English About](https://lanveris.net/en/about): English product mission, boundaries, operator, and contact information.
- [English Privacy Policy](https://lanveris.net/en/privacy): English disclosure of Lanveris account, proof, log, and analytics processing.
- [Agent skill.md](https://lanveris.net/skill.md): Machine-readable setup instructions for agents that need to install the CLI and register proofs.
- [CLI install script](https://lanveris.net/install.sh): Stable install-script mirror for the public Lanveris CLI release repository.

## Learn Pages

- [Agent 交付物如何留下可信证据](https://lanveris.net/learn/agent-proof): 解释 Lanveris 如何为 AI agent 的交付物建立存在时间、署名标签和完整性证据。
- [视频、照片和素材包交付前怎么留证](https://lanveris.net/learn/media-proof): 面向创作者、内容团队和项目方，说明视频、照片、文本、采集素材如何用 Lanveris 做发布前存证。
- [收到文件后，怎样验它是不是登记过的那一份](https://lanveris.net/learn/verify-ai-output): 说明收到一份文件或验真链接时，如何通过 Lanveris 检查指纹、登记信息、署名和完整性。
- [为什么文件不用上传，也能做存证](https://lanveris.net/learn/hash-only-proof): 解释 Lanveris 只上传哈希的架构：原文件留在本地，平台只接收 SHA-256 指纹和必要元数据。
- [为什么不能只信平台时间？](https://lanveris.net/learn/trusted-timestamp): 说明 RFC 3161 TSA 如何为内容指纹提供第三方可信时间，为什么它比平台时间、网盘时间或普通数据库时间更适合存证。
- [让 agent 自动给重要交付物留证](https://lanveris.net/learn/agent-integration): 介绍 Lanveris 的 agent 接入说明、CLI 接入流程、agent-first 注册和本地指纹登记。
- [Lanveris 到底能证明什么？](https://lanveris.net/learn/proof-boundaries): 集中说明 Lanveris 的可信时间存证边界：证明存在时间、登记元数据和文件完整性，不证明法律原创、版权归属或内容真实性。
- [Lanveris 的证明方法如何工作？](https://lanveris.net/learn/proof-method): 公开说明 Lanveris 如何用 SHA-256、Merkle 树和 RFC 3161 可信时间戳形成可复核证据，以及在线、离线验真的具体边界。

## English Learn Pages

- [What Is Agent Output Proof?](https://lanveris.net/en/learn/agent-proof): How Lanveris gives AI agent outputs verifiable existence time, attribution, and integrity evidence without uploading the original file.
- [Trusted Timestamp Proof for Creative Media](https://lanveris.net/en/learn/media-proof): How creators, content teams, and project owners can timestamp videos, photos, text, and collected materials before publication or licensing.
- [How To Verify Whether an AI Output Matches a Record](https://lanveris.net/en/learn/verify-ai-output): How to check a file or verification link with Lanveris by recalculating the fingerprint locally and comparing it with public proof records.
- [Why Lanveris Uploads Hashes, Not Files](https://lanveris.net/en/learn/hash-only-proof): Why Lanveris keeps original files local and submits only SHA-256 fingerprints plus necessary metadata.
- [Why Trusted Timestamps Matter](https://lanveris.net/en/learn/trusted-timestamp): How RFC 3161 trusted timestamping gives content fingerprints independent third-party time evidence.
- [How Agents Connect to Lanveris](https://lanveris.net/en/learn/agent-integration): How Lanveris uses skill.md and a local CLI so agents can register important deliverables without uploading files.
- [What Lanveris Proves, and What It Does Not](https://lanveris.net/en/learn/proof-boundaries): A clear boundary page for Lanveris timestamp evidence: existence time, registered metadata, and file integrity, not legal authorship, copyright ownership, or media authenticity.
- [How Does the Lanveris Proof Method Work?](https://lanveris.net/en/learn/proof-method): A transparent explanation of how Lanveris combines SHA-256, Merkle trees, and RFC 3161 trusted timestamps for independently verifiable evidence.

## Verification Model

- Files are not uploaded for registration or web verification.
- Lanveris stores content fingerprints, agent labels, claimed account metadata, registration metadata, and timestamp evidence.
- A .lanveris credential is portable; the CLI can verify it offline after trust roots are cached.
- Proof means existence, trusted time, registered label, and integrity. It does not by itself prove legal authorship.