Proof by construction.
make
build/bin/geth --testnet --syncmode "full" --lightserv 90 --cache 512 console
INFO [12-11|19:45:13] CHT section=67 sectionHead=9832cf2ce760d4e3a7922fbfedeaa5dce67f1772e0f729f67c806bfafdedc370 root=60d43984a1d55e93f4296f4b48bf5af350476fe48679a73263bd57d8a324c9d4
INFO [12-11|19:45:13] BloomTrie section=67 sectionHead=9832cf2ce760d4e3a7922fbfedeaa5dce67f1772e0f729f67c806bfafdedc370 root=fd81543dc619f6d1148e766b942c90296343c2cd0fd464946678f27f35feb59b
You'll need all values here:
Currently geth can only work with hardcoded Trusted Checkpoints and the code is inside go-ethereum
codebase. Following our protocol of updating go-ethereum
vendored package, follow these steps:
patch -p1 -R < geth-patches/0006-latest-cht.patch
geth-patches/0006-latest-cht.patch
and change statusRopstenCheckpoint
variable with values from above log output.patch -p1 < geth-patches/0006-latest-cht.patch
build/bin/statusd --networkid 3 les
on all available networks and ensure block synchronisation starts from relatively latest numbers (see the original geth output)