Memento Project

Memento is a United States ''National Digital Information Infrastructure and Preservation Program ( NDIIPP)''–funded project aimed at making Web-archived content more readily discoverable and accessible to the public.

Technical description

Memento is defined in RFC 7089 as an implementation of the time dimension of content negotiation. HTTP accomplishes negotiation of content via a variety of headers that allow clients and servers to find content that the user desires.

The header provided by HTTP does not necessarily reflect when a particular version of a web page came into existence. Also, the header may not exist in some cases. To provide more information, the header has been introduced to indicate when a specific representation of a web page was observed on the web.

Usage

Copies of page can be found by simply navigating, in a web browser, to a link formatted, replacing ''urltoarchive'' with the full URL of the page desired:{{cite web, url=http://timetravel.mementoweb.org/guide/api/, title=Time Travel APIs, website=timetravel.mementoweb.org, access-date=2018-05-15, archive-url=https://web.archive.org/web/20180521224610/http://timetravel.mementoweb.org/guide/api/, archive-date=2018-05-21, url-status=live

JSON description of a Memento:
: http://timetravel.mementoweb.org/api/json/YYYY/''urltoarchive''
: http://timetravel.mementoweb.org/api/json/YYYYMM/''urltoarchive''
: http://timetravel.mementoweb.org/api/json/YYYYMMDD/''urltoarchive''
: http://timetravel.mementoweb.org/api/json/YYYYMMDDHH/''urltoarchive''
: http://timetravel.mementoweb.org/api/json/YYYYMMDDHHMM/''urltoarchive''
::or
redirect to a Memento with a datetime that is close to a desired datetime:
: http://timetravel.mementoweb.org/memento/YYYY/''urltoarchive''
: http://timetravel.mementoweb.org/memento/YYYYMM/''urltoarchive''
: http://timetravel.mementoweb.org/memento/YYYYMMDD/''urltoarchive''
: http://timetravel.mementoweb.org/memento/YYYYMMDDHH/''urltoarchive''
: http://timetravel.mementoweb.org/memento/YYYYMMDDHHMM/''urltoarchive''

References

External links

Memento Project

The When of the Web
- Extensive information about the proposal and experiment is available in the November 2009 paper

Memento: Time Travel for the Web
* http://lanlsource.lanl.gov/hello
* http://www.cdlib.org/cdlinfo/2010/02/04/web-archive-discovery-memento-implementation-meeting/

Web archiving
Web archiving initiatives
Los Alamos National Laboratory
Old Dominion University