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More checkpoint tribal knowledge

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Duke Leto
2022-09-19 13:06:39 -04:00
parent 50c4af69f1
commit 473ec30404
2 changed files with 7 additions and 1 deletions
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6
doc/release-process.md
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@@ -68,6 +68,12 @@ Install deps on Linux:
- PROTIP: Man page creation must be done after updating the version number and recompiling and before Debian package creation - PROTIP: Man page creation must be done after updating the version number and recompiling and before Debian package creation
- Update checkpoints in src/chainparams.cpp via util/checkpoints.pl - Update checkpoints in src/chainparams.cpp via util/checkpoints.pl
- hushd must be running to run this script, since it uses hush-cli to get the data - hushd must be running to run this script, since it uses hush-cli to get the data
- Run `./util/checkpoints.pl &> checkpoints.txt` to generate the latets checkpoint data
- By default it will generate checkpoints for every 1000 blocks, the "stride"
- You can get a different "stride" by passing it in as the first arg to the script
- To get checkpoint data for every 5000 blocks: `./util/checkpoints.pl 5000 &> checkpoints.txt`
- Currently checkpoints from before block 340k are given for every 5k blocks to keep the data smaller
- Look for line which says "HUSH mainnet checkpoint data" near line 560 in chainparams.cpp , that is where checkpoint data begins.
- checkpoints.pl will just generate the data you need, it must be manually copied into the correct place - checkpoints.pl will just generate the data you need, it must be manually copied into the correct place
- Checkpoints are a list of block heights and block hashes that tell a full node the correct block history of the blockchain - Checkpoints are a list of block heights and block hashes that tell a full node the correct block history of the blockchain
- Checkpoints make block verification a bit faster, because nodes can say "is this block a descendant of a checkpoint block?" instead of doing full consensus checks, which take more time - Checkpoints make block verification a bit faster, because nodes can say "is this block a descendant of a checkpoint block?" instead of doing full consensus checks, which take more time

2
src/chainparams.cpp
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@@ -559,7 +559,7 @@ void *chainparams_commandline() {
pCurrentParams->consensus.vUpgrades[Consensus::UPGRADE_OVERWINTER].nActivationHeight = ASSETCHAINS_OVERWINTER; pCurrentParams->consensus.vUpgrades[Consensus::UPGRADE_OVERWINTER].nActivationHeight = ASSETCHAINS_OVERWINTER;
// Generated at 1575831755 via hush3 util/checkpoints.pl by Duke Leto // Generated at 1575831755 via hush3 util/checkpoints.pl by Duke Leto
if (strcmp(SMART_CHAIN_SYMBOL,"HUSH3") == 0) { if (strcmp(SMART_CHAIN_SYMBOL,"HUSH3") == 0) {
// Generated at 1596199654 via hush3 util/checkpoints.pl by Duke Leto // HUSH mainnet checkpoint data
checkpointData = //(Checkpoints::CCheckpointData) checkpointData = //(Checkpoints::CCheckpointData)
{ {
boost::assign::map_list_of boost::assign::map_list_of