Best Stampd Alternatives ranked by AI · updated Aug 2026

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Stampd is a blockchain timestamping service for creating verifiable proofs that digital files or information existed at a particular time. It is aimed at users who want a simpler hosted alternative to building their own anchoring workflow.

Developer: Stampd Price: Freemium, paid plans available 🎯 stampd.io

🔗 Blockchain Data Integrity file verification notarization timestamping

Top 6 Stampd alternatives

Woleet

Woleet is an enterprise platform for proving the integrity and existence of digital files by anchoring cryptographic hashes to the Bitcoin blockchain....

Pros

Supports enterprise APIs and automated document anchoring
Uses Bitcoin blockchain anchoring for independently verifiable timestamps
Suitable for large-scale data-integrity and compliance workflows

Cons

Pricing is not publicly listed
More complex to deploy than consumer timestamping tools
Bitcoin anchoring can introduce confirmation delays

Custom pricing

Alternatives to Woleet → Visit site

Proof of Existence

Proof of Existence is a web service for recording a cryptographic hash of a file on a blockchain without uploading the file...

Pros

Very simple workflow for one-off file proofs
Does not require publishing the original file
Lower barrier to entry than Woleet's API platform

Cons

Far fewer automation and administration features than Woleet
Not designed for high-volume enterprise workflows
Limited reporting, access control, and integrations

Free

Alternatives to Proof of Existence → Visit site

OpenTimestamps

OpenTimestamps is an open-source protocol and tooling ecosystem for proving when digital data existed by anchoring hashes to the Bitcoin blockchain. It...

Pros

Free and open source
Uses Bitcoin anchoring without requiring a vendor account
Strong developer tooling and broad ecosystem support

Cons

Requires more technical setup than Woleet
Limited built-in enterprise administration and reporting
Proof completion can depend on calendar-server availability

Free

Alternatives to OpenTimestamps → Visit site

OriginStamp

OriginStamp is a blockchain-based timestamping service for proving the existence and integrity of files, text, and other digital records. It serves individuals,...

Pros

Simpler hosted experience than Woleet
Supports web, API, and bulk timestamping workflows
Designed for both individual and business users

Cons

Less control over infrastructure than OpenTimestamps
Advanced business features may require a paid plan
Vendor dependency is greater than with Woleet's independently verifiable proofs

Freemium, paid plans available

Alternatives to OriginStamp → Visit site

WordProof

WordProof timestamps online content and documents on blockchain networks to create a verifiable history of publication and updates. It is primarily designed...

Pros

Better suited than Woleet for websites and publishing workflows
Offers integrations for content-management systems
Makes content version history visible to readers

Cons

More focused on web content than arbitrary enterprise data
Less flexible for custom back-office integrations
May not match Woleet's Bitcoin-specific anchoring requirements

Freemium, paid plans available

Alternatives to WordProof → Visit site

Attestiv

Attestiv is a digital media authenticity platform that detects manipulation and creates provenance records for images, video, and documents. It targets insurers,...

Pros

Stronger than Woleet for detecting manipulated media
Combines authenticity analysis with provenance records
Targets enterprise and insurance evidence workflows

Cons

More specialized than Woleet's general-purpose data anchoring
Custom pricing can make small deployments difficult
AI-based detection may produce false positives or negatives

Custom pricing

Alternatives to Attestiv → Visit site

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