DNS Stamps encode all the parameters required to connect to a secure DNS server as a single string.
Think about stamps as QR code, but for DNS. They can be used with the DNSCrypt-Proxy client among others.
sdns://AgMAAAAAAAAACTUuMi43NS43NSA-GhoPbFPz6XpJLVcIS1uYBwWe4FerFQWHb9g_2j24OBFkb2gubmwuYWhhZG5zLm5ldAovZG5zLXF1ZXJ5
sdns://AgMAAAAAAAAAFlsyYTA0OjUyYzA6MTAxOjc1Ojo3NV0gPhoaD2xT8-l6SS1XCEtbmAcFnuBXqxUFh2_YP9o9uDgRZG9oLm5sLmFoYWRucy5uZXQKL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAADTQ1Ljc5LjEyMC4yMzMgPhoaD2xT8-l6SS1XCEtbmAcFnuBXqxUFh2_YP9o9uDgRZG9oLmluLmFoYWRucy5uZXQKL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAAF1syNDAwOjg5MDQ6ZTAwMTo0Mzo6NDNdID4aGg9sU_PpekktVwhLW5gHBZ7gV6sVBYdv2D_aPbg4EWRvaC5pbi5haGFkbnMubmV0Ci9kbnMtcXVlcnk
sdns://AgMAAAAAAAAADTQ1LjY3LjIxOS4yMDggPhoaD2xT8-l6SS1XCEtbmAcFnuBXqxUFh2_YP9o9uDgRZG9oLmxhLmFoYWRucy5uZXQKL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAAFlsyYTA0OmJkYzc6MTAwOjcwOjo3MF0gPhoaD2xT8-l6SS1XCEtbmAcFnuBXqxUFh2_YP9o9uDgRZG9oLmxhLmFoYWRucy5uZXQKL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAADjE4NS4yMTMuMjYuMTg3ID4aGg9sU_PpekktVwhLW5gHBZ7gV6sVBYdv2D_aPbg4FWRvaC5lYXN0dXMucGktZG5zLmNvbQovZG5zLXF1ZXJ5
sdns://AgMAAAAAAAAAFlsyYTBkOjU2MDA6MzM6Mzo6YWJjZF0gPhoaD2xT8-l6SS1XCEtbmAcFnuBXqxUFh2_YP9o9uDgVZG9oLmVhc3R1cy5waS1kbnMuY29tCi9kbnMtcXVlcnk
sdns://AgMAAAAAAAAADDQ1LjYzLjMwLjE2MyA-GhoPbFPz6XpJLVcIS1uYBwWe4FerFQWHb9g_2j24OBVkb2guZWFzdGF1LnBpLWRucy5jb20KL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAAF1syMDAxOjE5ZjA6NTgwMTpiN2M6OjFdID4aGg9sU_PpekktVwhLW5gHBZ7gV6sVBYdv2D_aPbg4FWRvaC5lYXN0YXUucGktZG5zLmNvbQovZG5zLXF1ZXJ5
sdns://AgMAAAAAAAAADDY2LjQyLjMzLjEzNSA-GhoPbFPz6XpJLVcIS1uYBwWe4FerFQWHb9g_2j24OBVkb2guZWFzdGFzLnBpLWRucy5jb20KL2Rucy1xdWVyeQ
sdns://AgMAAAAAAAAAGFsyMDAxOjE5ZjA6NzAwMToyMjVkOjoxXSA-GhoPbFPz6XpJLVcIS1uYBwWe4FerFQWHb9g_2j24OBVkb2guZWFzdGFzLnBpLWRucy5jb20KL2Rucy1xdWVyeQ