Distribute truth, so that you and your customers can prosper.

Easily create & distribute stamped digital files that can’t be tampered with, faked, or forged – even by AI.

Learning Credentials

Create verifiable diplomas, transcripts, certificates, badges, and more in seconds.

Legal Documents

Stamp wills, trusts, and power of attorney documents.

Identity Management

Create certified IDs that can’t be forged or faked.

Sol Nasisi as part of Boston Blockchain Wee panel.
Is this image real or AI manipulated? Chainletter co-founder Sol Nasisi speaks on a panel at Boston Blockchain Week. Or did he? Find out using Chainletter’s Verify tool. Find out if it’s real.

AI Fraud Resistant

Chainletter’s blockchain stamping solution is designed to be AI-fraud resistant, ensuring the authenticity of digital records in an era where deepfakes and AI-generated content are increasingly difficult to detect. By cryptographically hashing and timestamping each file on the blockchain, our platform creates an immutable proof of originality that cannot be altered, faked, or regenerated by AI tools. This provides institutions, legal professionals, and creators with verifiable trust that their documents and credentials are genuine—shielding the world from the growing risks of AI manipulation and digital forgery.

Two Fully Customizable Solutions For Distributing Trusted Files

Private Label Solution

Issue and authenticate certified digital files from a fully customized, private label site for your organization. Setup can be done in days and issuing certified files takes minutes after that.

API Solution

Gain access to the Chainletter API and use it to create your own fully-customizable authenticated file experience.

Qubic Labs Logo

Chainletter is the proud recipient of a 2025 development grant from Blockchain accelerator Qubic labs.

Becoming a Trust Hub

How Your Organization Can Benefit

  • Create and Distribute tamper-proof digital files
  • Increase the credibility of your brand
  • Demonstrate your organization’s innovativeness
  • Make your user’s lives easier

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We can have your organization producing and distributing certified digital files in days.