You can use roll id look-up to verify the integrity of older rolls.
SERVER SEED IN USE 2017-04-29475647-478075
f6791960a0f07686cdd0ba231e4bef699cb8d4626fa773e065e73e51a6f5e9312017-04-28472797-475646
a8d9f33c16e824b9c4882ef167c7b47dc662ff204e9c6c797d906219cc32e4692017-04-27469953-472796
ee3e66e37ab2ab27f56c1164e3f8b4ad00741746a33958da94c6d8f1436f06ec2017-04-26467109-469952
de02e7e5bac6a7a9ddbe15c58132580d993d66328f98f9909292dd354006af262017-04-25464267-467108
c16f38811e16ac7949d629c75da3ea4f6add2ba4e59f0a846d3ff0db9f7ed4ce2017-04-24461410-464266
47221c4bb9a26d499a389f6c17838b7f219db096c652a68a3db67c5a589a0e682017-04-23458541-461409
e271e9d053efd7f0da1c216dc2e113151f8918e86ed52702dd5c3d990c84e8832017-04-22455672-458540
adaec4c2add97521603af1d044e203bee66f080498a1ecae5bf3a09ad21ee3b82017-04-21452801-455671
b2933a0c66f4bd007fe075b24b3ec8fe0307c6d93eeda59bfd1aead349cc00c02017-04-20449929-452800