The in-flight block set was written in exactly one place — BuildBlock — so a block arriving from a peer was never findable by id and its child failed Verify with "parent not found". That is the ordinary shape whenever more than one block is in flight, so a follower could not follow. Both paths now register through trackVerified: the block we build, and the block we verify from a peer. The read lock a Verify holds cannot be upgraded, so the checks finish under it and the registration takes the write lock on its own — pendingBlocks keeps one owner, which is the property this VM already has a test for. trackVerified also prunes, because nothing else would. The engine may drop a block it never accepts and never rejects, so a set that only ever grew would leak the way an unreleased mempool claim did; anything at or below the last accepted height is decided or orphaned, which bounds it to what is actually in flight. This fixes the parent lookup and not the layer under it: Verify reads nonces from committed state, so two blocks in flight from the SAME payer still cannot both verify. Doing that needs a per-block state overlay. keyvm has the same limit, and the test says so rather than implying otherwise.
Lux Chains
Independent VM plugin binaries for the Lux Network.
Each directory builds to a standalone binary that the Lux node loads as a plugin via --plugin-dir.
Build
make # build all VMs
make evm # build one VM
make test # test all
Install
lpm install evm
lpm install dexvm
Or copy binaries to ~/.lux/plugins/<vmid>.
VMs
make's target list is named in the Makefile, and every name in it is a
directory here that ships a plugin entrypoint (<vm>/cmd/plugin, or evm/main.go).
dexvm/ is the exception in the table below: it is a library the EVM plugin
embeds — it has no entrypoint of its own, so make builds no dexvm binary.
The other directories here (fee/, ownership/, internal/, cmd/) are
libraries and a tool, and are not VMs.
Live means the VM has a chain registered on Lux mainnet 96369
(platform.getBlockchains).
| VM | Chain | Live on 96369 | Purpose |
|---|---|---|---|
| evm | C-Chain | ✅ | EVM smart contracts |
| dexvm | D-Chain | ✅ | Decentralized exchange |
| aivm | A-Chain | ✅ | AI/ML inference |
| bridgevm | B-Chain | ✅ | Cross-chain bridge — also owns all cross-chain messaging / relay / teleport (LP-6000); there is no separate teleportvm |
| graphvm | G-Chain | ✅ | GraphQL data layer |
| keyvm | K-Chain | ✅ | Key management |
| quantumvm | Q-Chain | ✅ | Post-quantum consensus signing (Pulsar) |
| zkvm | Z-Chain | ✅ | Groth16 over BLS12-381 (rolls N × ML-DSA-65 sigs into 192-byte proof) |
| identityvm | I-Chain | ❌ built, not deployed | Decentralized identity |
| oraclevm | O-Chain | ❌ built, not deployed | Oracle/off-chain data |
| relayvm | R-Chain | ❌ built, not deployed | Cross-chain relay |
| mpcvm | M-Chain | ❌ built, not deployed | MPC ceremonies (CGGMP21, FROST, Pulsar-general) — bridge custody for external wallets (LP-7100) |
| fhevm | F-Chain | ❌ built, not deployed | Confidential compute (LP-8200): ciphertext handles, access permits, threshold decryption. Records the public coordinates of encrypted values and holds none of the encrypted part — no ciphertext body, no FHE key, no share. Wraps the FHE runtime at mpcvm/fhe/ |
| schain | S-Chain | ❌ built, not deployed | S3-style object storage (on-chain metadata / off-chain blob). Declares its own VMID = ids.ID{'s','c','h','a','i','n'} in schain/factory.go and is not in the canonical luxfi/constants VM-ID registry |
P-Chain (platformvm) and X-Chain (xvm) are in-process core VMs registered by
luxfi/node, not plugins built here. Together with the eight ✅ rows above they
are the ten chains live on 96369.
Not in this repo
| Name | Status |
|---|---|
teleportvm / T-Chain |
Removed. LP-134 dissolves T-Chain with zero remainder: threshold signing → M-Chain, FHE → F-Chain, cross-chain messaging/teleport → B-Chain (bridgevm). LP-5013 and LP-7330 are deprecated by LP-134; see LP-7050 for the migration map. No teleportvm VM ID exists in luxfi/constants. |
servicenodevm |
Never existed. The service-node registry was never built under this name; the S-Chain directory here is schain/ and is object storage, not a registry. |
Plugin filenames
luxd resolves a CreateChainTx's vmID to an implementation by looking for a file
of that name in --plugin-dir, so a plugin installed under any other name is
invisible and its chain silently never starts. The filename is the CB58 of the
vmID — n6sSsSfbpQBrU9sY4R29U6z8VrmnTo2CntW6da4rRS7qmnGdv for fhevm,
qCURact1n41FcoNBch8iMVBwc9AWie48D118ZNJ5tBdWrvryS for mpcvm. Each VM pins its
own in a test, because a vmID cannot change once a chain has been created with it.