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the idea was born here:

eu-digital-green-certificates/dgc-participating-countries#10

credits & source: https://www.github.com/lovasoa/sanipasse/tree/master/src%2Fassets%2FDigital_Green_Certificate_Signing_Keys.json

credits: ubirch.com

source: https://de.dscg.ubirch.com/trustList/DSC

credits: https://greencheck.gv.at/

source: https://greencheck.gv.at/api/masterdata

source: https://github.com/minvws/nl-covid19-coronacheck-mobile-core/blob/main/testdata/get.sh

credits: section42#3

source: https://dgcg.covidbevis.se/tp/trust-list

credits: section42#2

source: https://github.com/cn-uofbasel/ch-dcc-keys/

credits: section42#4