Feat/remove relayer layer

Cargo.toml

@@ -23,8 +23,6 @@ members = [
 	"frame/evm-polkavm/uapi",
 	"frame/hotfix-sufficients",
 	"frame/ismp-messaging",
-	"frame/relayer/runtime-api",
-	"frame/relayer/rpc",
 	"frame/zk-verifier/runtime-api",
 	"frame/zk-verifier/rpc",
 	"client/api",
@@ -267,9 +265,6 @@ pallet-evm-precompile-shielded-pool = { path = "frame/evm/precompile/shielded-po
 pallet-evm-precompile-simple = { path = "frame/evm/precompile/simple", default-features = false }
 pallet-evm-test-vector-support = { path = "frame/evm/test-vector-support" }
 pallet-hotfix-sufficients = { path = "frame/hotfix-sufficients", default-features = false }
-pallet-relayer = { path = "frame/relayer", default-features = false }
-pallet-relayer-rpc = { path = "frame/relayer/rpc" }
-pallet-relayer-runtime-api = { path = "frame/relayer/runtime-api", default-features = false }
 pallet-shielded-pool = { path = "frame/shielded-pool", default-features = false }
 pallet-shielded-pool-runtime-api = { path = "frame/shielded-pool/runtime-api", default-features = false }
 pallet-validator-set = { path = "frame/validator-set", default-features = false }

README.md

@@ -28,7 +28,7 @@ Orbinum combines the transparency benefits of blockchain technology with advance
 
 Orbinum is built using Substrate's FRAME framework and implements Clean Architecture principles across all components:
 
-- **Pallets**: Modular runtime components (`pallet-shielded-pool`, `pallet-zk-verifier`, `pallet-relayer`)
+- **Pallets**: Modular runtime components (`pallet-shielded-pool`, `pallet-zk-verifier`, `pallet-validator-set`)
 - **Primitives**: Core cryptographic libraries (`zk-core`, `zk-verifier`)
 - **Client**: RPC layer and blockchain infrastructure
 - **Circuits**: Circom zero-knowledge circuits (`transfer`, `unshield`)

client/rpc-v2/src/README.md

@@ -45,7 +45,7 @@ io.merge(ChainRpc::new(client.clone()).into_rpc())?;
 
 Returns `true` if the given SS58-encoded account is an active Aura block author.
 
-Reads `pallet_aura::Authorities` directly from storage — no runtime API call is made. Intended for UIs that need to gate actions (e.g. relayer registration) on validator eligibility without waiting for an extrinsic to fail.
+Reads `pallet_aura::Authorities` directly from storage — no runtime API call is made. Intended for UIs that need to gate actions on validator eligibility without waiting for an extrinsic to fail.
 
 **Parameters**
 

client/rpc/CHANGELOG.md

@@ -2,13 +2,7 @@
 
 ## Unreleased
 
-* Relay: `orbinum_relayShieldedCall` records a relay commit (`commitRelay`, batched) and waits for it to land before submitting the spend, so the fee is credited to this relayer. Skipped on runtimes without `ShieldedPoolRuntimeApi` v3 and `RelayerRuntimeApi` v2.
-* Relay: an unregistered relay address fails fast instead of timing out, and a failed `commitRelay` submission is reported to every caller in its batch.
-* Relay: one relay per spend — a request whose nullifiers are already in flight is refused, so N copies no longer cost the relayer N× gas. The dry-run is repeated after the commit lands; a commit already on-chain is not sent again; a spend another relayer's commit outranks — earlier block, or same block and lower hash, checked before and after our commit lands — is refused (that commit takes the fee); commit batches are sent from a task a disconnecting caller cannot cancel, one chunk per block, each only after the previous one is recorded, since the quota applies to the block a chunk lands in.
-* Relay: a spend's claim holds while its request runs and lapses only once submitted; an error or a disconnecting caller releases it. Calldata is dry-run before claiming, so junk naming someone else's nullifier cannot block their relay. Waiting for a commit batch times out.
-* Relay: the nonce recovers from a submitted transaction that never lands (the confirmed nonce is reused after `NONCE_STALL_BLOCKS`), and the chain is read under the submit lock.
-* Relay: `orbinum_relayerStatus.enabled` requires registration (on runtimes with relay commits) and a balance for the worst case of a commit plus a spend.
-* Relay (internal): commit batching lives in `relay/rpc/commit.rs` and the request's nullifier claim (`ClaimGuard`) in `relay/guard.rs`.
+* Removed the node-native EVM relay: `orbinum_relayShieldedCall`, `orbinum_relayerStatus` and `EthValidatorSigner` are gone. Private spends are submitted unsigned.
 * `eth_getFilterChanges`: the first poll of a log filter scans its range, and every later poll skips journal logs the scan covered, so a block journaled late is not returned twice; a reorg entry is skipped on the first poll (the scan read the new chain) and passes through after it. A result over `max_past_logs`, from the scan or the journal, drops the filter instead of failing the same way on every poll.
 * Fix `estimate_gas`: ensure that provided gas limit it never larger than current block's gas limit
 * `EthPubSubApi::new` takes an additional `overrides` parameter.

client/rpc/Cargo.toml

@@ -24,7 +24,7 @@ rand = "0.9"
 rlp = { workspace = true }
 scale-codec = { workspace = true }
 schnellru = "0.2.4"
-serde = { workspace = true, features = ["derive"] }
+serde = { workspace = true, optional = true }
 thiserror = { workspace = true }
 tokio = { workspace = true, features = ["sync", "time"] }
 
@@ -61,9 +61,6 @@ fp-evm = { workspace = true, features = ["default"] }
 fp-rpc = { workspace = true, features = ["default"] }
 fp-storage = { workspace = true, features = ["default"] }
 pallet-evm = { workspace = true, features = ["default"] }
-pallet-evm-precompile-shielded-pool = { workspace = true, features = ["std"] }
-pallet-relayer-runtime-api = { workspace = true, features = ["std"] }
-pallet-shielded-pool-runtime-api = { workspace = true, features = ["std"] }
 
 [dev-dependencies]
 # Substrate
@@ -80,5 +77,5 @@ rocksdb = [
 	"sc-service/rocksdb",
 	"fc-mapping-sync/rocksdb",
 ]
-txpool = ["fc-rpc-core/txpool"]
+txpool = ["fc-rpc-core/txpool", "serde"]
 rpc-binary-search-estimate = []

client/rpc/src/lib.rs

@@ -32,7 +32,6 @@ mod eth;
 mod eth_pubsub;
 mod logs_journal;
 mod net;
-pub mod relay;
 mod signer;
 #[cfg(feature = "txpool")]
 mod txpool;
@@ -47,8 +46,7 @@ pub use self::{
 	eth_pubsub::{EthPubSub, EthereumSubIdProvider},
 	logs_journal::{LogsJournal, LogsJournalConfig, LogsJournalEntry, LogsJournalError},
 	net::Net,
-	relay::{OrbinumRelay, OrbinumRelayApiServer, RelayerStatus},
-	signer::{EthDevSigner, EthSigner, EthValidatorSigner},
+	signer::{EthDevSigner, EthSigner},
 	web3::Web3,
 };
 pub use ethereum::TransactionV3 as EthereumTransaction;