As of April 2026, STAMPD.IO is a WordPress Stamp plugin with 10 active installations and a 0/5 rating0. It has been downloaded 1.3K+ times in total. Requires WordPress 4.9+ and PHP 5.2.4+. Available on WordPress.org since 2018. Last updated 3 years ago — may have compatibility concerns. Top alternative: GrandPlugins Image Watermark.
0/5Rating
10active installs
1.3K+total downloads
8 yearssince 2018
Overview
This plugin allows you to stamp the contents of your posts to the blockchain. Protect the authenticity of your original work by timestamping the unique identifier (SHA256 hash) of each posts’s content.
Using this plugin you can stamp your posts and add a custom signature with the resulting hash and transaction ID.
Learn more about it and how it works: https://stampd.io/#/about
It requires that you have an account in stampd.io. Visit this URL to register: https://stampd.io/#/register
Screenshots
Ratings & Reviews
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Compatibility
| WordPress | 4.9+ requiredTested up to 6.0.11 |
| PHP | 5.2.4+ required |
Top Alternatives to STAMPD.IO – Blockchain Stamping
Frequently Asked Questions
Changelog
Initial submission
Updated for use with Guttenberg blocks
Minor JS fix
Updates to UI
Post content fix
Minor corrections for WP 6
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.