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The GO RP and TA use this implementation: https://github.com/zachmann/go-oidcfed

Example metadata: https://relying-party-php.testbed.oidcfed.incubator.geant.org/.well-known/openid-federation?format=json

Fedservice example

Repo: https://gitlab.geant.org/TI_Incubator/oidcfed/fedservice

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• eduGAIN as root TA: https://edugain.testbed.oidcfed.incubator.geant.org/
• the following national federations:
  • Delos Federation (Greece): https://delos.testbed.oidcfed.incubator.geant.org
  • Hungarian Research and Educational Federation: https://eduidhu.testbed.oidcfed.incubator.geant.org 
  • HAKA (the identity federation of the Finnish universities): https://haka.testbed.oidcfed.incubator.geant.org
  • InCommon Federation in the US: https://incommon.testbed.oidcfed.incubator.geant.org
  • UK Access Management Federation
    for Education and Research: https://ukfederation.testbed.oidcfed.incubator.geant.org
• 5440 OpenId Connect Providers
• 3601 Relying Parties

Example metadata: https://oidcfed.sa5vopaas.utr.surfcloud.nl/leafs/fe37e407801ede6bc262eed7bf00a54f4c33e890/.json

The entire federation was exported as .dot file via ofcli and visualised below.

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