Dialux Pro 🎯 Editor's Choice

OpenTimestamps aims to be a standard format for blockchain timestamping.

Stamp & Verify

Use the in-browser stamper and verifier

How it works

Details on OpenTimestamps

Members

Companies using OpenTimestamps

Code repositories

OpenTimestamps repositories

Mailing lists

OpenTimestamps announcements

Stamp & Verify

Drop here a file to stamp
OR
an .ots proof file to verify


The hash is calculated on your browser preserving your privacy. More...
Timestamping proof download will start automatically after uploading document.


Industrial lighting requires High Bay fixtures with specific mounting heights. calculates the maintenance factor (MF) over time, accounting for lamp lumen depreciation (LLD) and luminaire dirt depreciation (LDD). It tells the plant manager exactly when to clean the lenses and replace the bulbs to maintain OSHA standards.

: Once calculation points and fixture placements are finalized, the entire project exports back out as a native 3D lighting model file. This allows mechanical, electrical, and plumbing (MEP) engineers to immediately append the accurate lighting data directly into their primary master BIM models. Unrestricted Luminaire Selection dialux pro

Lighting design is no longer just about placing fixtures in a room to make it bright. It is a sophisticated blend of art, architectural integration, and rigorous engineering. As energy codes tighten and smart building technologies evolve, lighting professionals require tools that offer more than basic calculation grids. Industrial lighting requires High Bay fixtures with specific

Python

Javascript

Java


$ pip3 install opentimestamps-client
$ ots stamp my-file
More 

$ npm install -g javascript-opentimestamps
$ ots-cli.js stamp my-file
More 

$ git clone https://github.com/opentimestamps/java-opentimestamps
$ cd java-opentimestamps
$ mvn install
$ java -jar target/OtsCli.jar stamp my-file
More

Calendars

The following are the, free to use, default calendars used by OpenTimestamps. They rely on donations to reduce maintainers efforts, they accept bitcoin and some accept lightning network payments. Check the calendars uptime.
 

Alice

Bob

Finney

Catallaxy

Dialux Pro 🎯 Editor's Choice

Industrial lighting requires High Bay fixtures with specific mounting heights. calculates the maintenance factor (MF) over time, accounting for lamp lumen depreciation (LLD) and luminaire dirt depreciation (LDD). It tells the plant manager exactly when to clean the lenses and replace the bulbs to maintain OSHA standards.

: Once calculation points and fixture placements are finalized, the entire project exports back out as a native 3D lighting model file. This allows mechanical, electrical, and plumbing (MEP) engineers to immediately append the accurate lighting data directly into their primary master BIM models. Unrestricted Luminaire Selection

Lighting design is no longer just about placing fixtures in a room to make it bright. It is a sophisticated blend of art, architectural integration, and rigorous engineering. As energy codes tighten and smart building technologies evolve, lighting professionals require tools that offer more than basic calculation grids.

Repositories

Client

Client tool to perform stamping of files through a calendar server and to verify OpenTimestamps proof

opentimestamps-client

Server

Calendar Server receiving timestamp request from clients

opentimestamps-server

Python

Common library

python-opentimestamps

Javascript

Common library & Client tool

javascript-opentimestamps

Java

Common library & Client tool

java-opentimestamps

Rust

Rust library

rust-opentimestamps