diff --git a/configs/mangata.yml b/configs/mangata.yml
new file mode 100644
index 00000000..bbfe4819
--- /dev/null
+++ b/configs/mangata.yml
@@ -0,0 +1,30 @@
+endpoint: wss://mangata-x.api.onfinality.io/public-ws
+mock-signature-host: true
+db: ./mangata.db.sqlite
+
+registered-types:
+    types:
+      ShufflingSeed:
+        seed: 'H256'
+        proof: 'H512'
+      Header:
+        parentHash: 'Hash'
+        number: 'Compact<BlockNumber>'
+        stateRoot: 'Hash'
+        extrinsicsRoot: 'Hash'
+        digest: 'Digest'
+        seed: 'ShufflingSeed'
+        count: 'BlockNumber'
+
+import-storage:
+  Sudo:
+    Key: 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY # Alice
+  Tokens:
+    Accounts:
+      -
+        -
+          - 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY
+          - token: 0
+        - free: '1000000000000000000000000' # 1M MG
+  Council:
+    Members: [5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY]
diff --git a/e2e/helper.ts b/e2e/helper.ts
index 76d84e48..06c7eeb6 100644
--- a/e2e/helper.ts
+++ b/e2e/helper.ts
@@ -76,6 +76,7 @@ export const setupAll = async ({
         },
         mockSignatureHost,
         allowUnresolvedImports,
+        registeredTypes: {},
       })
 
       const { port, close } = await createServer(handler({ chain }))
diff --git a/src/blockchain/block.ts b/src/blockchain/block.ts
index 43d4a8ca..33259a43 100644
--- a/src/blockchain/block.ts
+++ b/src/blockchain/block.ts
@@ -175,6 +175,7 @@ export class Block {
         this.runtimeVersion,
       ]).then(([data, properties, chain, version]) => {
         const registry = new TypeRegistry(this.hash)
+        registry.setKnownTypes(this.chain.registeredTypes)
         registry.setChainProperties(registry.createType('ChainProperties', properties) as ChainProperties)
         registry.register(getSpecTypes(registry, chain, version.specName, version.specVersion))
         registry.setHasher(getSpecHasher(registry, chain, version.specName))
diff --git a/src/blockchain/index.ts b/src/blockchain/index.ts
index 4f1096f9..d248583b 100644
--- a/src/blockchain/index.ts
+++ b/src/blockchain/index.ts
@@ -1,6 +1,7 @@
 import { ApplyExtrinsicResult } from '@polkadot/types/interfaces'
 import { DataSource } from 'typeorm'
 import { HexString } from '@polkadot/util/types'
+import { RegisteredTypes } from '@polkadot/types/types'
 import { blake2AsHex } from '@polkadot/util-crypto'
 import { u8aConcat, u8aToHex } from '@polkadot/util'
 import type { TransactionValidity } from '@polkadot/types/interfaces/txqueue'
@@ -23,6 +24,7 @@ export interface Options {
   header: { number: number; hash: HexString }
   mockSignatureHost?: boolean
   allowUnresolvedImports?: boolean
+  registeredTypes: RegisteredTypes
 }
 
 export class Blockchain {
@@ -31,6 +33,7 @@ export class Blockchain {
   readonly db: DataSource | undefined
   readonly mockSignatureHost: boolean
   readonly allowUnresolvedImports: boolean
+  readonly registeredTypes: RegisteredTypes
 
   readonly #txpool: TxPool
   readonly #inherentProvider: InherentProvider
@@ -50,11 +53,13 @@ export class Blockchain {
     header,
     mockSignatureHost = false,
     allowUnresolvedImports = false,
+    registeredTypes = {},
   }: Options) {
     this.api = api
     this.db = db
     this.mockSignatureHost = mockSignatureHost
     this.allowUnresolvedImports = allowUnresolvedImports
+    this.registeredTypes = registeredTypes
 
     this.#head = new Block(this, header.number, header.hash)
     this.#registerBlock(this.#head)
diff --git a/src/schema/index.ts b/src/schema/index.ts
index 7e7a7c51..f774d74c 100644
--- a/src/schema/index.ts
+++ b/src/schema/index.ts
@@ -26,6 +26,7 @@ export const configSchema = z
     'wasm-override': z.string().optional(),
     genesis: z.union([z.string(), genesisSchema]).optional(),
     timestamp: z.number().optional(),
+    'registered-types': z.any().optional(),
   })
   .strict()
 
diff --git a/src/setup.ts b/src/setup.ts
index f7570970..e66ac2b0 100644
--- a/src/setup.ts
+++ b/src/setup.ts
@@ -71,6 +71,7 @@ export const setup = async (argv: Config) => {
     },
     mockSignatureHost: argv['mock-signature-host'],
     allowUnresolvedImports: argv['allow-unresolved-imports'],
+    registeredTypes: argv['registered-types'],
   })
 
   if (argv.timestamp) await timeTravel(chain, argv.timestamp)