Human readable timestamp ULID

[jstavats]

Hi,

Is there any appetite for a human readable timestamp version of ULID? I've got a project where that's important so I changed the timestamp base32 into a ISO 8601 like time format, for example:

"20250812T134014620ZP1V7N6WPTRQQ3RER".
The first portion to and including the Z is an ISO 8601 inspired timestamp down to msec in UTC.

I think it has the same properties as the normal ULID, but is human readable.

Thoughts?

[ulfben]

I really liked this idea, so I added support for a human-readable ULID format in my C++ implementation: https://github.com/ulfben/cpp_ulid#human-readable-extension

The readable form keeps the same millisecond resolution and sort order, but makes the timestamp directly inspectable. Parsing isn’t marked noexcept since it uses std::string internally (and could throw std::bad_alloc), but the feature comes with a full test suite to ensure the format round-trips correctly.

Thanks for the inspiration!