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zeekay
b81715a57a
The legacy T-Chain conflated two orthogonal threshold primitives on one
ThresholdVM substrate. LP-134 decomplects them into two distinct
primary-network chains, both served by the shared ThresholdVM library:
F-Chain (F/fhe/fhevm) — threshold FHE, confidential compute / off-EVM
threshold DECRYPT. ThresholdVM in FHE mode.
M-Chain (M/mpc/mpcvm) — threshold MPC, CGGMP21/FROST bridge-custody
SIGNING. ThresholdVM in MPC mode. EVM verify
surface = 0x0800..02 (FROST) + 0x0800..03
(CGGMP21), verify-only, ceremony off-EVM.
Forward-only: tchain.json is retired on all 4 nets (T was never bootstrapped
with live state — a clean 404 forward-split, no state migration). F-Chain
occupies T's vacated shard slot (same VM, keeps Z/G/K byte-stable); M-Chain
is appended. Fresh non-colliding chainIds at the next free indices 9/10
(F: 97269/97268/97270/32327, M: 97369/97368/97370/32437); T's 96869-series
is not recycled.
K-Chain decomplect ("K stays keyvm" per LP-134): the M/mpc/mpcvm aliases and
MPC params were erroneously carried on the KeyVM shard (the "mpc->K backwards"
wiring). Moved them to M-Chain; kchain.json is now pure KMS key management.
Chain-level wiring (one way, data-driven by shard presence):
- pkg/genesis: ConfigOutput/Config gain FChainGenesis (T's slot) +
MChainGenesis; TChainGenesis removed.
- configs.go chainSet/primaryChainShardFiles/slots + config.go
optionalChainShards: tchain.json -> fchain.json, append mchain.json.
- builder: F and M both map to constants.ThresholdVMID (shared substrate)
and are disambiguated in Aliases() by CreateChainTx.BlockchainName.
- chain_mapping role taxonomy: RoleThreshold("T") retired -> RoleFHE("F")
+ RoleMPC("M"); RoleKMS unchanged. (Canonical native FChainID/MChainID
await a luxfi/ids change; the closed P/C/X/Q/A/B/T/Z/G/I/K/D set is
out of scope here. Active path pins EVM chainIds in the shards.)
Tests: chain_shards_test updated to 11 chains + new F/M chainIds; builder
emits 11 chains; new lp134_split_test asserts the decomplect invariants
(F is FHE-only, M is MPC-only, K is KMS-only, no alias collision across
{F,M,K}, tchain.json retired). go build/vet/test green (GOWORK=off).
22 lines
468 B
JSON
22 lines
468 B
JSON
{
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"aliases": [
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"F",
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"fhe",
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"fhevm"
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],
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"description": "Threshold FHE confidential compute — off-EVM threshold DECRYPT (TFHE, ring N=1024 q=12289)",
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"dkgParties": 10,
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"dkgThreshold": 7,
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"fhePrecompilePrefix": "0x07",
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"message": "Lux F-Chain Genesis",
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"mode": "fhe",
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"name": "F-Chain",
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"networkId": 3,
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"ringDegreeN": 1024,
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"ringModulusQ": 12289,
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"timestamp": 1730531602,
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"version": 1,
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"vm": "ThresholdVM",
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"chainId": 97270
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}
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