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zeekayandHanzo Dev
47928ea08d
The D-Chain derived its height-0 block from compiled-in defaults and threw away
the genesis bytes the node handed it. Two consequences, both live:
* dex v1.4.2..v1.13.0 and v1.14.0+ derive DIFFERENT genesis blocks. v1.14.0
(e58e2a3) put the custody ledger into ComposeRoot, taking the keccak preimage
from 136 to 168 bytes, so the empty-state root moved. lux-mainnet and
lux-testnet run MuetnVSbs1UnPUDTH5q4kgbKcfRx97DjmzZXVxcCdQ52H9sES; lux-devnet
runs mpxP6xF3ahpjdwP6YgjtagSWQCZSR6pziEqDoDv573k2V3WJA. The fleets are split
and nothing said so.
* every network shared one genesis, because none of them reached the VM.
A wiped validator therefore adopted whatever its binary believed, looked healthy
alone, and was partitioned for good. Wiping chainData is the ordinary repair for
a stuck chain, so the ordinary repair was the thing that stranded the node.
Genesis now comes from block.Init.Genesis — the dchain.json recorded in the
P-Chain CreateChainTx, carried across the plugin boundary as
InitializeRequest.GenesisBytes and, until now, dropped on the floor. The document
is opaque: its digest occupies genesis's parent-root slot, which nothing used, so
the chain begins from its configuration and every later root descends from it. No
schema of the document enters consensus.
meta:genesis records the height-0 image in the batch that commits it. Every start
reconciles three views — the creation record, this binary, the database — and a
disagreement refuses to start naming all three. A chain born without the record
recovers it at height 0 from its own head block, which is durable data, not a
guess; past height 0 there is nothing honest to recover and it refuses.
Removed with it: loadHeadBlock's rebuild-genesis-from-code path, and readRoot's
silent zero for a missing root, which would have rebased the chain just as quietly.
genesis_test.go pins the images byte for byte, including both live fleet genesis
blocks read from luxd, so this cannot drift again unnoticed.
Co-authored-by: Hanzo Dev <[email protected]>