From 0a51ea8a7f8137603c09c04ed436dffea135745e Mon Sep 17 00:00:00 2001
From: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>
Date: Fri, 15 Dec 2023 14:53:41 +0100
Subject: [PATCH] rococo-runtime: presets added

---
 polkadot/node/service/src/chain_spec.rs       | 283 +---------
 polkadot/runtime/rococo/Cargo.toml            |   3 +-
 .../runtime/rococo/src/genesis_configs.rs     | 496 ++++++++++++++++++
 polkadot/runtime/rococo/src/lib.rs            |  23 +-
 4 files changed, 521 insertions(+), 284 deletions(-)
 create mode 100644 polkadot/runtime/rococo/src/genesis_configs.rs

diff --git a/polkadot/node/service/src/chain_spec.rs b/polkadot/node/service/src/chain_spec.rs
index fd35a4aaf6a..99a080648ad 100644
--- a/polkadot/node/service/src/chain_spec.rs
+++ b/polkadot/node/service/src/chain_spec.rs
@@ -372,265 +372,6 @@ fn westend_staging_testnet_config_genesis() -> serde_json::Value {
 	})
 }
 
-#[cfg(feature = "rococo-native")]
-fn rococo_staging_testnet_config_genesis() -> serde_json::Value {
-	use hex_literal::hex;
-	use sp_core::crypto::UncheckedInto;
-
-	// subkey inspect "$SECRET"
-	let endowed_accounts = vec![
-		// 5DwBmEFPXRESyEam5SsQF1zbWSCn2kCjyLW51hJHXe9vW4xs
-		hex!["52bc71c1eca5353749542dfdf0af97bf764f9c2f44e860cd485f1cd86400f649"].into(),
-	];
-
-	// ./scripts/prepare-test-net.sh 8
-	let initial_authorities: Vec<(
-		AccountId,
-		AccountId,
-		BabeId,
-		GrandpaId,
-		ValidatorId,
-		AssignmentId,
-		AuthorityDiscoveryId,
-		BeefyId,
-	)> = vec![
-		(
-			//5EHZkbp22djdbuMFH9qt1DVzSCvqi3zWpj6DAYfANa828oei
-			hex!["62475fe5406a7cb6a64c51d0af9d3ab5c2151bcae982fb812f7a76b706914d6a"].into(),
-			//5FeSEpi9UYYaWwXXb3tV88qtZkmSdB3mvgj3pXkxKyYLGhcd
-			hex!["9e6e781a76810fe93187af44c79272c290c2b9e2b8b92ee11466cd79d8023f50"].into(),
-			//5Fh6rDpMDhM363o1Z3Y9twtaCPfizGQWCi55BSykTQjGbP7H
-			hex!["a076ef1280d768051f21d060623da3ab5b56944d681d303ed2d4bf658c5bed35"]
-				.unchecked_into(),
-			//5CPd3zoV9Aaah4xWucuDivMHJ2nEEmpdi864nPTiyRZp4t87
-			hex!["0e6d7d1afbcc6547b92995a394ba0daed07a2420be08220a5a1336c6731f0bfa"]
-				.unchecked_into(),
-			//5CP6oGfwqbEfML8efqm1tCZsUgRsJztp9L8ZkEUxA16W8PPz
-			hex!["0e07a51d3213842f8e9363ce8e444255990a225f87e80a3d651db7841e1a0205"]
-				.unchecked_into(),
-			//5HQdwiDh8Qtd5dSNWajNYpwDvoyNWWA16Y43aEkCNactFc2b
-			hex!["ec60e71fe4a567ef9fef99d4bbf37ffae70564b41aa6f94ef0317c13e0a5477b"]
-				.unchecked_into(),
-			//5HbSgM72xVuscsopsdeG3sCSCYdAeM1Tay9p79N6ky6vwDGq
-			hex!["f49eae66a0ac9f610316906ec8f1a0928e20d7059d76a5ca53cbcb5a9b50dd3c"]
-				.unchecked_into(),
-			//5DPSWdgw38Spu315r6LSvYCggeeieBAJtP5A1qzuzKhqmjVu
-			hex!["034f68c5661a41930c82f26a662276bf89f33467e1c850f2fb8ef687fe43d62276"]
-				.unchecked_into(),
-		),
-		(
-			//5DvH8oEjQPYhzCoQVo7WDU91qmQfLZvxe9wJcrojmJKebCmG
-			hex!["520b48452969f6ddf263b664de0adb0c729d0e0ad3b0e5f3cb636c541bc9022a"].into(),
-			//5ENZvCRzyXJJYup8bM6yEzb2kQHEb1NDpY2ZEyVGBkCfRdj3
-			hex!["6618289af7ae8621981ffab34591e7a6486e12745dfa3fd3b0f7e6a3994c7b5b"].into(),
-			//5DLjSUfqZVNAADbwYLgRvHvdzXypiV1DAEaDMjcESKTcqMoM
-			hex!["38757d0de00a0c739e7d7984ef4bc01161bd61e198b7c01b618425c16bb5bd5f"]
-				.unchecked_into(),
-			//5HnDVBN9mD6mXyx8oryhDbJtezwNSj1VRXgLoYCBA6uEkiao
-			hex!["fcd5f87a6fd5707a25122a01b4dac0a8482259df7d42a9a096606df1320df08d"]
-				.unchecked_into(),
-			//5EPEWRecy2ApL5n18n3aHyU1956zXTRqaJpzDa9DoqiggNwF
-			hex!["669a10892119453e9feb4e3f1ee8e028916cc3240022920ad643846fbdbee816"]
-				.unchecked_into(),
-			//5ES3fw5X4bndSgLNmtPfSbM2J1kLqApVB2CCLS4CBpM1UxUZ
-			hex!["68bf52c482630a8d1511f2edd14f34127a7d7082219cccf7fd4c6ecdb535f80d"]
-				.unchecked_into(),
-			//5HeXbwb5PxtcRoopPZTp5CQun38atn2UudQ8p2AxR5BzoaXw
-			hex!["f6f8fe475130d21165446a02fb1dbce3a7bf36412e5d98f4f0473aed9252f349"]
-				.unchecked_into(),
-			//5F7nTtN8MyJV4UsXpjg7tHSnfANXZ5KRPJmkASc1ZSH2Xoa5
-			hex!["03a90c2bb6d3b7000020f6152fe2e5002fa970fd1f42aafb6c8edda8dacc2ea77e"]
-				.unchecked_into(),
-		),
-		(
-			//5FPMzsezo1PRxYbVpJMWK7HNbR2kUxidsAAxH4BosHa4wd6S
-			hex!["92ef83665b39d7a565e11bf8d18d41d45a8011601c339e57a8ea88c8ff7bba6f"].into(),
-			//5G6NQidFG7YiXsvV7hQTLGArir9tsYqD4JDxByhgxKvSKwRx
-			hex!["b235f57244230589523271c27b8a490922ffd7dccc83b044feaf22273c1dc735"].into(),
-			//5GpZhzAVg7SAtzLvaAC777pjquPEcNy1FbNUAG2nZvhmd6eY
-			hex!["d2644c1ab2c63a3ad8d40ad70d4b260969e3abfe6d7e6665f50dc9f6365c9d2a"]
-				.unchecked_into(),
-			//5HAes2RQYPbYKbLBfKb88f4zoXv6pPA6Ke8CjN7dob3GpmSP
-			hex!["e1b68fbd84333e31486c08e6153d9a1415b2e7e71b413702b7d64e9b631184a1"]
-				.unchecked_into(),
-			//5FtAGDZYJKXkhVhAxCQrXmaP7EE2mGbBMfmKDHjfYDgq2BiU
-			hex!["a8e61ffacafaf546283dc92d14d7cc70ea0151a5dd81fdf73ff5a2951f2b6037"]
-				.unchecked_into(),
-			//5CtK7JHv3h6UQZ44y54skxdwSVBRtuxwPE1FYm7UZVhg8rJV
-			hex!["244f3421b310c68646e99cdbf4963e02067601f57756b072a4b19431448c186e"]
-				.unchecked_into(),
-			//5D4r6YaB6F7A7nvMRHNFNF6zrR9g39bqDJFenrcaFmTCRwfa
-			hex!["2c57f81fd311c1ab53813c6817fe67f8947f8d39258252663b3384ab4195494d"]
-				.unchecked_into(),
-			//5EPoHj8uV4fFKQHYThc6Z9fDkU7B6ih2ncVzQuDdNFb8UyhF
-			hex!["039d065fe4f9234f0a4f13cc3ae585f2691e9c25afa469618abb6645111f607a53"]
-				.unchecked_into(),
-		),
-		(
-			//5DMNx7RoX6d7JQ38NEM7DWRcW2THu92LBYZEWvBRhJeqcWgR
-			hex!["38f3c2f38f6d47f161e98c697bbe3ca0e47c033460afda0dda314ab4222a0404"].into(),
-			//5GGdKNDr9P47dpVnmtq3m8Tvowwf1ot1abw6tPsTYYFoKm2v
-			hex!["ba0898c1964196474c0be08d364cdf4e9e1d47088287f5235f70b0590dfe1704"].into(),
-			//5EjkyPCzR2SjhDZq8f7ufsw6TfkvgNRepjCRQFc4TcdXdaB1
-			hex!["764186bc30fd5a02477f19948dc723d6d57ab174debd4f80ed6038ec960bfe21"]
-				.unchecked_into(),
-			//5DJV3zCBTJBLGNDCcdWrYxWDacSz84goGTa4pFeKVvehEBte
-			hex!["36be9069cdb4a8a07ecd51f257875150f0a8a1be44a10d9d98dabf10a030aef4"]
-				.unchecked_into(),
-			//5F9FsRjpecP9GonktmtFL3kjqNAMKjHVFjyjRdTPa4hbQRZA
-			hex!["882d72965e642677583b333b2d173ac94b5fd6c405c76184bb14293be748a13b"]
-				.unchecked_into(),
-			//5F1FZWZSj3JyTLs8sRBxU6QWyGLSL9BMRtmSKDmVEoiKFxSP
-			hex!["821271c99c958b9220f1771d9f5e29af969edfa865631dba31e1ab7bc0582b75"]
-				.unchecked_into(),
-			//5CtgRR74VypK4h154s369abs78hDUxZSJqcbWsfXvsjcHJNA
-			hex!["2496f28d887d84705c6dae98aee8bf90fc5ad10bb5545eca1de6b68425b70f7c"]
-				.unchecked_into(),
-			//5CPx6dsr11SCJHKFkcAQ9jpparS7FwXQBrrMznRo4Hqv1PXz
-			hex!["0307d29bbf6a5c4061c2157b44fda33b7bb4ec52a5a0305668c74688cedf288d58"]
-				.unchecked_into(),
-		),
-		(
-			//5C8AL1Zb4bVazgT3EgDxFgcow1L4SJjVu44XcLC9CrYqFN4N
-			hex!["02a2d8cfcf75dda85fafc04ace3bcb73160034ed1964c43098fb1fe831de1b16"].into(),
-			//5FLYy3YKsAnooqE4hCudttAsoGKbVG3hYYBtVzwMjJQrevPa
-			hex!["90cab33f0bb501727faa8319f0845faef7d31008f178b65054b6629fe531b772"].into(),
-			//5Et3tfbVf1ByFThNAuUq5pBssdaPPskip5yob5GNyUFojXC7
-			hex!["7c94715e5dd8ab54221b1b6b2bfa5666f593f28a92a18e28052531de1bd80813"]
-				.unchecked_into(),
-			//5EX1JBghGbQqWohTPU6msR9qZ2nYPhK9r3RTQ2oD1K8TCxaG
-			hex!["6c878e33b83c20324238d22240f735457b6fba544b383e70bb62a27b57380c81"]
-				.unchecked_into(),
-			//5EUNaBpX9mJgcmLQHyG5Pkms6tbDiKuLbeTEJS924Js9cA1N
-			hex!["6a8570b9c6408e54bacf123cc2bb1b0f087f9c149147d0005badba63a5a4ac01"]
-				.unchecked_into(),
-			//5CaZuueRVpMATZG4hkcrgDoF4WGixuz7zu83jeBdY3bgWGaG
-			hex!["16c69ea8d595e80b6736f44be1eaeeef2ac9c04a803cc4fd944364cb0d617a33"]
-				.unchecked_into(),
-			//5DABsdQCDUGuhzVGWe5xXzYQ9rtrVxRygW7RXf9Tsjsw1aGJ
-			hex!["306ac5c772fe858942f92b6e28bd82fb7dd8cdd25f9a4626c1b0eee075fcb531"]
-				.unchecked_into(),
-			//5H91T5mHhoCw9JJG4NjghDdQyhC6L7XcSuBWKD3q3TAhEVvQ
-			hex!["02fb0330356e63a35dd930bc74525edf28b3bf5eb44aab9e9e4962c8309aaba6a6"]
-				.unchecked_into(),
-		),
-		(
-			//5C8XbDXdMNKJrZSrQURwVCxdNdk8AzG6xgLggbzuA399bBBF
-			hex!["02ea6bfa8b23b92fe4b5db1063a1f9475e3acd0ab61e6b4f454ed6ba00b5f864"].into(),
-			//5GsyzFP8qtF8tXPSsjhjxAeU1v7D1PZofuQKN9TdCc7Dp1JM
-			hex!["d4ffc4c05b47d1115ad200f7f86e307b20b46c50e1b72a912ec4f6f7db46b616"].into(),
-			//5GHWB8ZDzegLcMW7Gdd1BS6WHVwDdStfkkE4G7KjPjZNJBtD
-			hex!["bab3cccdcc34401e9b3971b96a662686cf755aa869a5c4b762199ce531b12c5b"]
-				.unchecked_into(),
-			//5GzDPGbUM9uH52ZEwydasTj8edokGUJ7vEpoFWp9FE1YNuFB
-			hex!["d9c056c98ca0e6b4eb7f5c58c007c1db7be0fe1f3776108f797dd4990d1ccc33"]
-				.unchecked_into(),
-			//5CmLCFeSurRXXtwMmLcVo7sdJ9EqDguvJbuCYDcHkr3cpqyE
-			hex!["1efc23c0b51ad609ab670ecf45807e31acbd8e7e5cb7c07cf49ee42992d2867c"]
-				.unchecked_into(),
-			//5DnsSy8a8pfE2aFjKBDtKw7WM1V4nfE5sLzP15MNTka53GqS
-			hex!["4c64d3f06d28adeb36a892fdaccecace150bec891f04694448a60b74fa469c22"]
-				.unchecked_into(),
-			//5CZdFnyzZvKetZTeUwj5APAYskVJe4QFiTezo5dQNsrnehGd
-			hex!["160ea09c5717270e958a3da42673fa011613a9539b2e4ebcad8626bc117ca04a"]
-				.unchecked_into(),
-			//5HgoR9JJkdBusxKrrs3zgd3ToppgNoGj1rDyAJp4e7eZiYyT
-			hex!["020019a8bb188f8145d02fa855e9c36e9914457d37c500e03634b5223aa5702474"]
-				.unchecked_into(),
-		),
-		(
-			//5HinEonzr8MywkqedcpsmwpxKje2jqr9miEwuzyFXEBCvVXM
-			hex!["fa373e25a1c4fe19c7148acde13bc3db1811cf656dc086820f3dda736b9c4a00"].into(),
-			//5EHJbj6Td6ks5HDnyfN4ttTSi57osxcQsQexm7XpazdeqtV7
-			hex!["62145d721967bd88622d08625f0f5681463c0f1b8bcd97eb3c2c53f7660fd513"].into(),
-			//5EeCsC58XgJ1DFaoYA1WktEpP27jvwGpKdxPMFjicpLeYu96
-			hex!["720537e2c1c554654d73b3889c3ef4c3c2f95a65dd3f7c185ebe4afebed78372"]
-				.unchecked_into(),
-			//5DnEySxbnppWEyN8cCLqvGjAorGdLRg2VmkY96dbJ1LHFK8N
-			hex!["4bea0b37e0cce9bddd80835fa2bfd5606f5dcfb8388bbb10b10c483f0856cf14"]
-				.unchecked_into(),
-			//5CAC278tFCHAeHYqE51FTWYxHmeLcENSS1RG77EFRTvPZMJT
-			hex!["042f07fc5268f13c026bbe199d63e6ac77a0c2a780f71cda05cee5a6f1b3f11f"]
-				.unchecked_into(),
-			//5HjRTLWcQjZzN3JDvaj1UzjNSayg5ZD9ZGWMstaL7Ab2jjAa
-			hex!["fab485e87ed1537d089df521edf983a777c57065a702d7ed2b6a2926f31da74f"]
-				.unchecked_into(),
-			//5ELv74v7QcsS6FdzvG4vL2NnYDGWmRnJUSMKYwdyJD7Xcdi7
-			hex!["64d59feddb3d00316a55906953fb3db8985797472bd2e6c7ea1ab730cc339d7f"]
-				.unchecked_into(),
-			//5FaUcPt4fPz93vBhcrCJqmDkjYZ7jCbzAF56QJoCmvPaKrmx
-			hex!["033f1a6d47fe86f88934e4b83b9fae903b92b5dcf4fec97d5e3e8bf4f39df03685"]
-				.unchecked_into(),
-		),
-		(
-			//5Ey3NQ3dfabaDc16NUv7wRLsFCMDFJSqZFzKVycAsWuUC6Di
-			hex!["8062e9c21f1d92926103119f7e8153cebdb1e5ab3e52d6f395be80bb193eab47"].into(),
-			//5HiWsuSBqt8nS9pnggexXuHageUifVPKPHDE2arTKqhTp1dV
-			hex!["fa0388fa88f3f0cb43d583e2571fbc0edad57dff3a6fd89775451dd2c2b8ea00"].into(),
-			//5H168nKX2Yrfo3bxj7rkcg25326Uv3CCCnKUGK6uHdKMdPt8
-			hex!["da6b2df18f0f9001a6dcf1d301b92534fe9b1f3ccfa10c49449fee93adaa8349"]
-				.unchecked_into(),
-			//5DrA2fZdzmNqT5j6DXNwVxPBjDV9jhkAqvjt6Us3bQHKy3cF
-			hex!["4ee66173993dd0db5d628c4c9cb61a27b76611ad3c3925947f0d0011ee2c5dcc"]
-				.unchecked_into(),
-			//5Gx6YeNhynqn8qkda9QKpc9S7oDr4sBrfAu516d3sPpEt26F
-			hex!["d822d4088b20dca29a580a577a97d6f024bb24c9550bebdfd7d2d18e946a1c7d"]
-				.unchecked_into(),
-			//5DhDcHqwxoes5s89AyudGMjtZXx1nEgrk5P45X88oSTR3iyx
-			hex!["481538f8c2c011a76d7d57db11c2789a5e83b0f9680dc6d26211d2f9c021ae4c"]
-				.unchecked_into(),
-			//5DqAvikdpfRdk5rR35ZobZhqaC5bJXZcEuvzGtexAZP1hU3T
-			hex!["4e262811acdfe94528bfc3c65036080426a0e1301b9ada8d687a70ffcae99c26"]
-				.unchecked_into(),
-			//5E41Znrr2YtZu8bZp3nvRuLVHg3jFksfQ3tXuviLku4wsao7
-			hex!["025e84e95ed043e387ddb8668176b42f8e2773ddd84f7f58a6d9bf436a4b527986"]
-				.unchecked_into(),
-		),
-	];
-
-	const ENDOWMENT: u128 = 1_000_000 * ROC;
-	const STASH: u128 = 100 * ROC;
-
-	serde_json::json!({
-		"balances": {
-			"balances": endowed_accounts
-				.iter()
-				.map(|k: &AccountId| (k.clone(), ENDOWMENT))
-				.chain(initial_authorities.iter().map(|x| (x.0.clone(), STASH)))
-				.collect::<Vec<_>>(),
-		},
-		"session": {
-			"keys": initial_authorities
-				.iter()
-				.map(|x| {
-					(
-						x.0.clone(),
-						x.0.clone(),
-						rococo_session_keys(
-							x.2.clone(),
-							x.3.clone(),
-							x.4.clone(),
-							x.5.clone(),
-							x.6.clone(),
-							x.7.clone(),
-						),
-					)
-				})
-				.collect::<Vec<_>>(),
-		},
-		"babe": {
-			"epochConfig": Some(rococo_runtime::BABE_GENESIS_EPOCH_CONFIG),
-		},
-		"sudo": { "key": Some(endowed_accounts[0].clone()) },
-		"configuration": {
-			"config": default_parachains_host_configuration(),
-		},
-		"registrar": {
-			"nextFreeParaId": polkadot_primitives::LOWEST_PUBLIC_ID,
-		},
-	})
-}
-
 /// Westend staging testnet config.
 #[cfg(feature = "westend-native")]
 pub fn westend_staging_testnet_config() -> Result<WestendChainSpec, String> {
@@ -660,7 +401,7 @@ pub fn rococo_staging_testnet_config() -> Result<RococoChainSpec, String> {
 	.with_name("Rococo Staging Testnet")
 	.with_id("rococo_staging_testnet")
 	.with_chain_type(ChainType::Live)
-	.with_genesis_config_patch(rococo_staging_testnet_config_genesis())
+	.with_genesis_config_patch_name("staging_testnet")
 	.with_telemetry_endpoints(
 		TelemetryEndpoints::new(vec![(ROCOCO_STAGING_TELEMETRY_URL.to_string(), 0)])
 			.expect("Rococo Staging telemetry url is valid; qed"),
@@ -901,15 +642,6 @@ fn westend_development_config_genesis() -> serde_json::Value {
 	)
 }
 
-#[cfg(feature = "rococo-native")]
-fn rococo_development_config_genesis() -> serde_json::Value {
-	rococo_testnet_genesis(
-		vec![get_authority_keys_from_seed("Alice")],
-		get_account_id_from_seed::<sr25519::Public>("Alice"),
-		None,
-	)
-}
-
 /// Westend development config (single validator Alice)
 #[cfg(feature = "westend-native")]
 pub fn westend_development_config() -> Result<WestendChainSpec, String> {
@@ -935,7 +667,7 @@ pub fn rococo_development_config() -> Result<RococoChainSpec, String> {
 	.with_name("Development")
 	.with_id("rococo_dev")
 	.with_chain_type(ChainType::Development)
-	.with_genesis_config_patch(rococo_development_config_genesis())
+	.with_genesis_config_patch_name("development")
 	.with_protocol_id(DEFAULT_PROTOCOL_ID)
 	.build())
 }
@@ -995,15 +727,6 @@ pub fn westend_local_testnet_config() -> Result<WestendChainSpec, String> {
 	.build())
 }
 
-#[cfg(feature = "rococo-native")]
-fn rococo_local_testnet_genesis() -> serde_json::Value {
-	rococo_testnet_genesis(
-		vec![get_authority_keys_from_seed("Alice"), get_authority_keys_from_seed("Bob")],
-		get_account_id_from_seed::<sr25519::Public>("Alice"),
-		None,
-	)
-}
-
 /// Rococo local testnet config (multivalidator Alice + Bob)
 #[cfg(feature = "rococo-native")]
 pub fn rococo_local_testnet_config() -> Result<RococoChainSpec, String> {
@@ -1014,7 +737,7 @@ pub fn rococo_local_testnet_config() -> Result<RococoChainSpec, String> {
 	.with_name("Rococo Local Testnet")
 	.with_id("rococo_local_testnet")
 	.with_chain_type(ChainType::Local)
-	.with_genesis_config_patch(rococo_local_testnet_genesis())
+	.with_genesis_config_patch_name("local_testnet")
 	.with_protocol_id(DEFAULT_PROTOCOL_ID)
 	.build())
 }
diff --git a/polkadot/runtime/rococo/Cargo.toml b/polkadot/runtime/rococo/Cargo.toml
index c7236572ed7..d3d40af3206 100644
--- a/polkadot/runtime/rococo/Cargo.toml
+++ b/polkadot/runtime/rococo/Cargo.toml
@@ -16,12 +16,14 @@ scale-info = { version = "2.10.0", default-features = false, features = ["derive
 log = { version = "0.4.17", default-features = false }
 serde = { version = "1.0.193", default-features = false }
 serde_derive = { version = "1.0.117", optional = true }
+serde_json = { version = "1.0.108", default-features = false, features = ["alloc"] }
 static_assertions = "1.1.0"
 smallvec = "1.8.0"
 
 authority-discovery-primitives = { package = "sp-authority-discovery", path = "../../../substrate/primitives/authority-discovery", default-features = false }
 babe-primitives = { package = "sp-consensus-babe", path = "../../../substrate/primitives/consensus/babe", default-features = false }
 beefy-primitives = { package = "sp-consensus-beefy", path = "../../../substrate/primitives/consensus/beefy", default-features = false }
+grandpa_primitives = { package = "sp-consensus-grandpa", path = "../../../substrate/primitives/consensus/grandpa" , default-features = false }
 binary-merkle-tree = { path = "../../../substrate/utils/binary-merkle-tree", default-features = false }
 rococo-runtime-constants = { package = "rococo-runtime-constants", path = "constants", default-features = false }
 sp-api = { path = "../../../substrate/primitives/api", default-features = false }
@@ -111,7 +113,6 @@ keyring = { package = "sp-keyring", path = "../../../substrate/primitives/keyrin
 remote-externalities = { package = "frame-remote-externalities", path = "../../../substrate/utils/frame/remote-externalities" }
 sp-trie = { path = "../../../substrate/primitives/trie" }
 separator = "0.4.1"
-serde_json = "1.0.108"
 sp-tracing = { path = "../../../substrate/primitives/tracing", default-features = false }
 tokio = { version = "1.24.2", features = ["macros"] }
 
diff --git a/polkadot/runtime/rococo/src/genesis_configs.rs b/polkadot/runtime/rococo/src/genesis_configs.rs
new file mode 100644
index 00000000000..376d860d80f
--- /dev/null
+++ b/polkadot/runtime/rococo/src/genesis_configs.rs
@@ -0,0 +1,496 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Polkadot is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Genesis configs presets for the Rococo runtime
+
+use crate::{SessionKeys, BABE_GENESIS_EPOCH_CONFIG};
+use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
+use babe_primitives::AuthorityId as BabeId;
+use beefy_primitives::ecdsa_crypto::AuthorityId as BeefyId;
+use grandpa_primitives::AuthorityId as GrandpaId;
+use primitives::{AccountId, AccountPublic, AssignmentId, ValidatorId};
+use rococo_runtime_constants::currency::UNITS as ROC;
+use sp_core::{sr25519, Pair, Public};
+use sp_runtime::traits::IdentifyAccount;
+#[cfg(not(feature = "std"))]
+use sp_std::alloc::format;
+use sp_std::vec::Vec;
+
+/// Helper function to generate a crypto pair from seed
+pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
+	TPublic::Pair::from_string(&format!("//{}", seed), None)
+		.expect("static values are valid; qed")
+		.public()
+}
+
+/// Helper function to generate an account ID from seed
+pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
+where
+	AccountPublic: From<<TPublic::Pair as Pair>::Public>,
+{
+	AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
+}
+
+/// Helper function to generate stash, controller and session key from seed
+pub fn get_authority_keys_from_seed(
+	seed: &str,
+) -> (
+	AccountId,
+	AccountId,
+	BabeId,
+	GrandpaId,
+	ValidatorId,
+	AssignmentId,
+	AuthorityDiscoveryId,
+	BeefyId,
+) {
+	let keys = get_authority_keys_from_seed_no_beefy(seed);
+	(keys.0, keys.1, keys.2, keys.3, keys.4, keys.5, keys.6, get_from_seed::<BeefyId>(seed))
+}
+
+/// Helper function to generate stash, controller and session key from seed
+pub fn get_authority_keys_from_seed_no_beefy(
+	seed: &str,
+) -> (AccountId, AccountId, BabeId, GrandpaId, ValidatorId, AssignmentId, AuthorityDiscoveryId) {
+	(
+		get_account_id_from_seed::<sr25519::Public>(&format!("{}//stash", seed)),
+		get_account_id_from_seed::<sr25519::Public>(seed),
+		get_from_seed::<BabeId>(seed),
+		get_from_seed::<GrandpaId>(seed),
+		get_from_seed::<ValidatorId>(seed),
+		get_from_seed::<AssignmentId>(seed),
+		get_from_seed::<AuthorityDiscoveryId>(seed),
+	)
+}
+
+fn testnet_accounts() -> Vec<AccountId> {
+	Vec::from([
+		get_account_id_from_seed::<sr25519::Public>("Alice"),
+		get_account_id_from_seed::<sr25519::Public>("Bob"),
+		get_account_id_from_seed::<sr25519::Public>("Charlie"),
+		get_account_id_from_seed::<sr25519::Public>("Dave"),
+		get_account_id_from_seed::<sr25519::Public>("Eve"),
+		get_account_id_from_seed::<sr25519::Public>("Ferdie"),
+		get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
+		get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
+		get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
+		get_account_id_from_seed::<sr25519::Public>("Dave//stash"),
+		get_account_id_from_seed::<sr25519::Public>("Eve//stash"),
+		get_account_id_from_seed::<sr25519::Public>("Ferdie//stash"),
+	])
+}
+
+fn rococo_session_keys(
+	babe: BabeId,
+	grandpa: GrandpaId,
+	para_validator: ValidatorId,
+	para_assignment: AssignmentId,
+	authority_discovery: AuthorityDiscoveryId,
+	beefy: BeefyId,
+) -> SessionKeys {
+	SessionKeys { babe, grandpa, para_validator, para_assignment, authority_discovery, beefy }
+}
+
+fn default_parachains_host_configuration(
+) -> runtime_parachains::configuration::HostConfiguration<primitives::BlockNumber> {
+	use primitives::{MAX_CODE_SIZE, MAX_POV_SIZE};
+
+	runtime_parachains::configuration::HostConfiguration {
+		validation_upgrade_cooldown: 2u32,
+		validation_upgrade_delay: 2,
+		code_retention_period: 1200,
+		max_code_size: MAX_CODE_SIZE,
+		max_pov_size: MAX_POV_SIZE,
+		max_head_data_size: 32 * 1024,
+		group_rotation_frequency: 20,
+		paras_availability_period: 4,
+		max_upward_queue_count: 8,
+		max_upward_queue_size: 1024 * 1024,
+		max_downward_message_size: 1024 * 1024,
+		max_upward_message_size: 50 * 1024,
+		max_upward_message_num_per_candidate: 5,
+		hrmp_sender_deposit: 0,
+		hrmp_recipient_deposit: 0,
+		hrmp_channel_max_capacity: 8,
+		hrmp_channel_max_total_size: 8 * 1024,
+		hrmp_max_parachain_inbound_channels: 4,
+		hrmp_channel_max_message_size: 1024 * 1024,
+		hrmp_max_parachain_outbound_channels: 4,
+		hrmp_max_message_num_per_candidate: 5,
+		dispute_period: 6,
+		no_show_slots: 2,
+		n_delay_tranches: 25,
+		needed_approvals: 2,
+		relay_vrf_modulo_samples: 2,
+		zeroth_delay_tranche_width: 0,
+		minimum_validation_upgrade_delay: 5,
+		..Default::default()
+	}
+}
+
+#[test]
+fn default_parachains_host_configuration_is_consistent() {
+	default_parachains_host_configuration().panic_if_not_consistent();
+}
+
+fn rococo_testnet_genesis(
+	initial_authorities: Vec<(
+		AccountId,
+		AccountId,
+		BabeId,
+		GrandpaId,
+		ValidatorId,
+		AssignmentId,
+		AuthorityDiscoveryId,
+		BeefyId,
+	)>,
+	root_key: AccountId,
+	endowed_accounts: Option<Vec<AccountId>>,
+) -> serde_json::Value {
+	let endowed_accounts: Vec<AccountId> = endowed_accounts.unwrap_or_else(testnet_accounts);
+
+	const ENDOWMENT: u128 = 1_000_000 * ROC;
+
+	serde_json::json!({
+		"balances": {
+			"balances": endowed_accounts.iter().map(|k| (k.clone(), ENDOWMENT)).collect::<Vec<_>>(),
+		},
+		"session": {
+			"keys": initial_authorities
+				.iter()
+				.map(|x| {
+					(
+						x.0.clone(),
+						x.0.clone(),
+						rococo_session_keys(
+							x.2.clone(),
+							x.3.clone(),
+							x.4.clone(),
+							x.5.clone(),
+							x.6.clone(),
+							x.7.clone(),
+						),
+					)
+				})
+				.collect::<Vec<_>>(),
+		},
+		"babe": {
+			"epochConfig": Some(BABE_GENESIS_EPOCH_CONFIG),
+		},
+		"sudo": { "key": Some(root_key.clone()) },
+		"configuration": {
+			"config": runtime_parachains::configuration::HostConfiguration {
+				max_validators_per_core: Some(1),
+				..default_parachains_host_configuration()
+			},
+		},
+		"registrar": {
+			"nextFreeParaId": primitives::LOWEST_PUBLIC_ID,
+		}
+	})
+}
+
+// staging_testnet
+fn rococo_staging_testnet_config_genesis() -> serde_json::Value {
+	use hex_literal::hex;
+	use sp_core::crypto::UncheckedInto;
+
+	// subkey inspect "$SECRET"
+	let endowed_accounts = Vec::from([
+		// 5DwBmEFPXRESyEam5SsQF1zbWSCn2kCjyLW51hJHXe9vW4xs
+		hex!["52bc71c1eca5353749542dfdf0af97bf764f9c2f44e860cd485f1cd86400f649"].into(),
+	]);
+
+	// ./scripts/prepare-test-net.sh 8
+	let initial_authorities: Vec<(
+		AccountId,
+		AccountId,
+		BabeId,
+		GrandpaId,
+		ValidatorId,
+		AssignmentId,
+		AuthorityDiscoveryId,
+		BeefyId,
+	)> = Vec::from([
+		(
+			//5EHZkbp22djdbuMFH9qt1DVzSCvqi3zWpj6DAYfANa828oei
+			hex!["62475fe5406a7cb6a64c51d0af9d3ab5c2151bcae982fb812f7a76b706914d6a"].into(),
+			//5FeSEpi9UYYaWwXXb3tV88qtZkmSdB3mvgj3pXkxKyYLGhcd
+			hex!["9e6e781a76810fe93187af44c79272c290c2b9e2b8b92ee11466cd79d8023f50"].into(),
+			//5Fh6rDpMDhM363o1Z3Y9twtaCPfizGQWCi55BSykTQjGbP7H
+			hex!["a076ef1280d768051f21d060623da3ab5b56944d681d303ed2d4bf658c5bed35"]
+				.unchecked_into(),
+			//5CPd3zoV9Aaah4xWucuDivMHJ2nEEmpdi864nPTiyRZp4t87
+			hex!["0e6d7d1afbcc6547b92995a394ba0daed07a2420be08220a5a1336c6731f0bfa"]
+				.unchecked_into(),
+			//5CP6oGfwqbEfML8efqm1tCZsUgRsJztp9L8ZkEUxA16W8PPz
+			hex!["0e07a51d3213842f8e9363ce8e444255990a225f87e80a3d651db7841e1a0205"]
+				.unchecked_into(),
+			//5HQdwiDh8Qtd5dSNWajNYpwDvoyNWWA16Y43aEkCNactFc2b
+			hex!["ec60e71fe4a567ef9fef99d4bbf37ffae70564b41aa6f94ef0317c13e0a5477b"]
+				.unchecked_into(),
+			//5HbSgM72xVuscsopsdeG3sCSCYdAeM1Tay9p79N6ky6vwDGq
+			hex!["f49eae66a0ac9f610316906ec8f1a0928e20d7059d76a5ca53cbcb5a9b50dd3c"]
+				.unchecked_into(),
+			//5DPSWdgw38Spu315r6LSvYCggeeieBAJtP5A1qzuzKhqmjVu
+			hex!["034f68c5661a41930c82f26a662276bf89f33467e1c850f2fb8ef687fe43d62276"]
+				.unchecked_into(),
+		),
+		(
+			//5DvH8oEjQPYhzCoQVo7WDU91qmQfLZvxe9wJcrojmJKebCmG
+			hex!["520b48452969f6ddf263b664de0adb0c729d0e0ad3b0e5f3cb636c541bc9022a"].into(),
+			//5ENZvCRzyXJJYup8bM6yEzb2kQHEb1NDpY2ZEyVGBkCfRdj3
+			hex!["6618289af7ae8621981ffab34591e7a6486e12745dfa3fd3b0f7e6a3994c7b5b"].into(),
+			//5DLjSUfqZVNAADbwYLgRvHvdzXypiV1DAEaDMjcESKTcqMoM
+			hex!["38757d0de00a0c739e7d7984ef4bc01161bd61e198b7c01b618425c16bb5bd5f"]
+				.unchecked_into(),
+			//5HnDVBN9mD6mXyx8oryhDbJtezwNSj1VRXgLoYCBA6uEkiao
+			hex!["fcd5f87a6fd5707a25122a01b4dac0a8482259df7d42a9a096606df1320df08d"]
+				.unchecked_into(),
+			//5EPEWRecy2ApL5n18n3aHyU1956zXTRqaJpzDa9DoqiggNwF
+			hex!["669a10892119453e9feb4e3f1ee8e028916cc3240022920ad643846fbdbee816"]
+				.unchecked_into(),
+			//5ES3fw5X4bndSgLNmtPfSbM2J1kLqApVB2CCLS4CBpM1UxUZ
+			hex!["68bf52c482630a8d1511f2edd14f34127a7d7082219cccf7fd4c6ecdb535f80d"]
+				.unchecked_into(),
+			//5HeXbwb5PxtcRoopPZTp5CQun38atn2UudQ8p2AxR5BzoaXw
+			hex!["f6f8fe475130d21165446a02fb1dbce3a7bf36412e5d98f4f0473aed9252f349"]
+				.unchecked_into(),
+			//5F7nTtN8MyJV4UsXpjg7tHSnfANXZ5KRPJmkASc1ZSH2Xoa5
+			hex!["03a90c2bb6d3b7000020f6152fe2e5002fa970fd1f42aafb6c8edda8dacc2ea77e"]
+				.unchecked_into(),
+		),
+		(
+			//5FPMzsezo1PRxYbVpJMWK7HNbR2kUxidsAAxH4BosHa4wd6S
+			hex!["92ef83665b39d7a565e11bf8d18d41d45a8011601c339e57a8ea88c8ff7bba6f"].into(),
+			//5G6NQidFG7YiXsvV7hQTLGArir9tsYqD4JDxByhgxKvSKwRx
+			hex!["b235f57244230589523271c27b8a490922ffd7dccc83b044feaf22273c1dc735"].into(),
+			//5GpZhzAVg7SAtzLvaAC777pjquPEcNy1FbNUAG2nZvhmd6eY
+			hex!["d2644c1ab2c63a3ad8d40ad70d4b260969e3abfe6d7e6665f50dc9f6365c9d2a"]
+				.unchecked_into(),
+			//5HAes2RQYPbYKbLBfKb88f4zoXv6pPA6Ke8CjN7dob3GpmSP
+			hex!["e1b68fbd84333e31486c08e6153d9a1415b2e7e71b413702b7d64e9b631184a1"]
+				.unchecked_into(),
+			//5FtAGDZYJKXkhVhAxCQrXmaP7EE2mGbBMfmKDHjfYDgq2BiU
+			hex!["a8e61ffacafaf546283dc92d14d7cc70ea0151a5dd81fdf73ff5a2951f2b6037"]
+				.unchecked_into(),
+			//5CtK7JHv3h6UQZ44y54skxdwSVBRtuxwPE1FYm7UZVhg8rJV
+			hex!["244f3421b310c68646e99cdbf4963e02067601f57756b072a4b19431448c186e"]
+				.unchecked_into(),
+			//5D4r6YaB6F7A7nvMRHNFNF6zrR9g39bqDJFenrcaFmTCRwfa
+			hex!["2c57f81fd311c1ab53813c6817fe67f8947f8d39258252663b3384ab4195494d"]
+				.unchecked_into(),
+			//5EPoHj8uV4fFKQHYThc6Z9fDkU7B6ih2ncVzQuDdNFb8UyhF
+			hex!["039d065fe4f9234f0a4f13cc3ae585f2691e9c25afa469618abb6645111f607a53"]
+				.unchecked_into(),
+		),
+		(
+			//5DMNx7RoX6d7JQ38NEM7DWRcW2THu92LBYZEWvBRhJeqcWgR
+			hex!["38f3c2f38f6d47f161e98c697bbe3ca0e47c033460afda0dda314ab4222a0404"].into(),
+			//5GGdKNDr9P47dpVnmtq3m8Tvowwf1ot1abw6tPsTYYFoKm2v
+			hex!["ba0898c1964196474c0be08d364cdf4e9e1d47088287f5235f70b0590dfe1704"].into(),
+			//5EjkyPCzR2SjhDZq8f7ufsw6TfkvgNRepjCRQFc4TcdXdaB1
+			hex!["764186bc30fd5a02477f19948dc723d6d57ab174debd4f80ed6038ec960bfe21"]
+				.unchecked_into(),
+			//5DJV3zCBTJBLGNDCcdWrYxWDacSz84goGTa4pFeKVvehEBte
+			hex!["36be9069cdb4a8a07ecd51f257875150f0a8a1be44a10d9d98dabf10a030aef4"]
+				.unchecked_into(),
+			//5F9FsRjpecP9GonktmtFL3kjqNAMKjHVFjyjRdTPa4hbQRZA
+			hex!["882d72965e642677583b333b2d173ac94b5fd6c405c76184bb14293be748a13b"]
+				.unchecked_into(),
+			//5F1FZWZSj3JyTLs8sRBxU6QWyGLSL9BMRtmSKDmVEoiKFxSP
+			hex!["821271c99c958b9220f1771d9f5e29af969edfa865631dba31e1ab7bc0582b75"]
+				.unchecked_into(),
+			//5CtgRR74VypK4h154s369abs78hDUxZSJqcbWsfXvsjcHJNA
+			hex!["2496f28d887d84705c6dae98aee8bf90fc5ad10bb5545eca1de6b68425b70f7c"]
+				.unchecked_into(),
+			//5CPx6dsr11SCJHKFkcAQ9jpparS7FwXQBrrMznRo4Hqv1PXz
+			hex!["0307d29bbf6a5c4061c2157b44fda33b7bb4ec52a5a0305668c74688cedf288d58"]
+				.unchecked_into(),
+		),
+		(
+			//5C8AL1Zb4bVazgT3EgDxFgcow1L4SJjVu44XcLC9CrYqFN4N
+			hex!["02a2d8cfcf75dda85fafc04ace3bcb73160034ed1964c43098fb1fe831de1b16"].into(),
+			//5FLYy3YKsAnooqE4hCudttAsoGKbVG3hYYBtVzwMjJQrevPa
+			hex!["90cab33f0bb501727faa8319f0845faef7d31008f178b65054b6629fe531b772"].into(),
+			//5Et3tfbVf1ByFThNAuUq5pBssdaPPskip5yob5GNyUFojXC7
+			hex!["7c94715e5dd8ab54221b1b6b2bfa5666f593f28a92a18e28052531de1bd80813"]
+				.unchecked_into(),
+			//5EX1JBghGbQqWohTPU6msR9qZ2nYPhK9r3RTQ2oD1K8TCxaG
+			hex!["6c878e33b83c20324238d22240f735457b6fba544b383e70bb62a27b57380c81"]
+				.unchecked_into(),
+			//5EUNaBpX9mJgcmLQHyG5Pkms6tbDiKuLbeTEJS924Js9cA1N
+			hex!["6a8570b9c6408e54bacf123cc2bb1b0f087f9c149147d0005badba63a5a4ac01"]
+				.unchecked_into(),
+			//5CaZuueRVpMATZG4hkcrgDoF4WGixuz7zu83jeBdY3bgWGaG
+			hex!["16c69ea8d595e80b6736f44be1eaeeef2ac9c04a803cc4fd944364cb0d617a33"]
+				.unchecked_into(),
+			//5DABsdQCDUGuhzVGWe5xXzYQ9rtrVxRygW7RXf9Tsjsw1aGJ
+			hex!["306ac5c772fe858942f92b6e28bd82fb7dd8cdd25f9a4626c1b0eee075fcb531"]
+				.unchecked_into(),
+			//5H91T5mHhoCw9JJG4NjghDdQyhC6L7XcSuBWKD3q3TAhEVvQ
+			hex!["02fb0330356e63a35dd930bc74525edf28b3bf5eb44aab9e9e4962c8309aaba6a6"]
+				.unchecked_into(),
+		),
+		(
+			//5C8XbDXdMNKJrZSrQURwVCxdNdk8AzG6xgLggbzuA399bBBF
+			hex!["02ea6bfa8b23b92fe4b5db1063a1f9475e3acd0ab61e6b4f454ed6ba00b5f864"].into(),
+			//5GsyzFP8qtF8tXPSsjhjxAeU1v7D1PZofuQKN9TdCc7Dp1JM
+			hex!["d4ffc4c05b47d1115ad200f7f86e307b20b46c50e1b72a912ec4f6f7db46b616"].into(),
+			//5GHWB8ZDzegLcMW7Gdd1BS6WHVwDdStfkkE4G7KjPjZNJBtD
+			hex!["bab3cccdcc34401e9b3971b96a662686cf755aa869a5c4b762199ce531b12c5b"]
+				.unchecked_into(),
+			//5GzDPGbUM9uH52ZEwydasTj8edokGUJ7vEpoFWp9FE1YNuFB
+			hex!["d9c056c98ca0e6b4eb7f5c58c007c1db7be0fe1f3776108f797dd4990d1ccc33"]
+				.unchecked_into(),
+			//5CmLCFeSurRXXtwMmLcVo7sdJ9EqDguvJbuCYDcHkr3cpqyE
+			hex!["1efc23c0b51ad609ab670ecf45807e31acbd8e7e5cb7c07cf49ee42992d2867c"]
+				.unchecked_into(),
+			//5DnsSy8a8pfE2aFjKBDtKw7WM1V4nfE5sLzP15MNTka53GqS
+			hex!["4c64d3f06d28adeb36a892fdaccecace150bec891f04694448a60b74fa469c22"]
+				.unchecked_into(),
+			//5CZdFnyzZvKetZTeUwj5APAYskVJe4QFiTezo5dQNsrnehGd
+			hex!["160ea09c5717270e958a3da42673fa011613a9539b2e4ebcad8626bc117ca04a"]
+				.unchecked_into(),
+			//5HgoR9JJkdBusxKrrs3zgd3ToppgNoGj1rDyAJp4e7eZiYyT
+			hex!["020019a8bb188f8145d02fa855e9c36e9914457d37c500e03634b5223aa5702474"]
+				.unchecked_into(),
+		),
+		(
+			//5HinEonzr8MywkqedcpsmwpxKje2jqr9miEwuzyFXEBCvVXM
+			hex!["fa373e25a1c4fe19c7148acde13bc3db1811cf656dc086820f3dda736b9c4a00"].into(),
+			//5EHJbj6Td6ks5HDnyfN4ttTSi57osxcQsQexm7XpazdeqtV7
+			hex!["62145d721967bd88622d08625f0f5681463c0f1b8bcd97eb3c2c53f7660fd513"].into(),
+			//5EeCsC58XgJ1DFaoYA1WktEpP27jvwGpKdxPMFjicpLeYu96
+			hex!["720537e2c1c554654d73b3889c3ef4c3c2f95a65dd3f7c185ebe4afebed78372"]
+				.unchecked_into(),
+			//5DnEySxbnppWEyN8cCLqvGjAorGdLRg2VmkY96dbJ1LHFK8N
+			hex!["4bea0b37e0cce9bddd80835fa2bfd5606f5dcfb8388bbb10b10c483f0856cf14"]
+				.unchecked_into(),
+			//5CAC278tFCHAeHYqE51FTWYxHmeLcENSS1RG77EFRTvPZMJT
+			hex!["042f07fc5268f13c026bbe199d63e6ac77a0c2a780f71cda05cee5a6f1b3f11f"]
+				.unchecked_into(),
+			//5HjRTLWcQjZzN3JDvaj1UzjNSayg5ZD9ZGWMstaL7Ab2jjAa
+			hex!["fab485e87ed1537d089df521edf983a777c57065a702d7ed2b6a2926f31da74f"]
+				.unchecked_into(),
+			//5ELv74v7QcsS6FdzvG4vL2NnYDGWmRnJUSMKYwdyJD7Xcdi7
+			hex!["64d59feddb3d00316a55906953fb3db8985797472bd2e6c7ea1ab730cc339d7f"]
+				.unchecked_into(),
+			//5FaUcPt4fPz93vBhcrCJqmDkjYZ7jCbzAF56QJoCmvPaKrmx
+			hex!["033f1a6d47fe86f88934e4b83b9fae903b92b5dcf4fec97d5e3e8bf4f39df03685"]
+				.unchecked_into(),
+		),
+		(
+			//5Ey3NQ3dfabaDc16NUv7wRLsFCMDFJSqZFzKVycAsWuUC6Di
+			hex!["8062e9c21f1d92926103119f7e8153cebdb1e5ab3e52d6f395be80bb193eab47"].into(),
+			//5HiWsuSBqt8nS9pnggexXuHageUifVPKPHDE2arTKqhTp1dV
+			hex!["fa0388fa88f3f0cb43d583e2571fbc0edad57dff3a6fd89775451dd2c2b8ea00"].into(),
+			//5H168nKX2Yrfo3bxj7rkcg25326Uv3CCCnKUGK6uHdKMdPt8
+			hex!["da6b2df18f0f9001a6dcf1d301b92534fe9b1f3ccfa10c49449fee93adaa8349"]
+				.unchecked_into(),
+			//5DrA2fZdzmNqT5j6DXNwVxPBjDV9jhkAqvjt6Us3bQHKy3cF
+			hex!["4ee66173993dd0db5d628c4c9cb61a27b76611ad3c3925947f0d0011ee2c5dcc"]
+				.unchecked_into(),
+			//5Gx6YeNhynqn8qkda9QKpc9S7oDr4sBrfAu516d3sPpEt26F
+			hex!["d822d4088b20dca29a580a577a97d6f024bb24c9550bebdfd7d2d18e946a1c7d"]
+				.unchecked_into(),
+			//5DhDcHqwxoes5s89AyudGMjtZXx1nEgrk5P45X88oSTR3iyx
+			hex!["481538f8c2c011a76d7d57db11c2789a5e83b0f9680dc6d26211d2f9c021ae4c"]
+				.unchecked_into(),
+			//5DqAvikdpfRdk5rR35ZobZhqaC5bJXZcEuvzGtexAZP1hU3T
+			hex!["4e262811acdfe94528bfc3c65036080426a0e1301b9ada8d687a70ffcae99c26"]
+				.unchecked_into(),
+			//5E41Znrr2YtZu8bZp3nvRuLVHg3jFksfQ3tXuviLku4wsao7
+			hex!["025e84e95ed043e387ddb8668176b42f8e2773ddd84f7f58a6d9bf436a4b527986"]
+				.unchecked_into(),
+		),
+	]);
+
+	const ENDOWMENT: u128 = 1_000_000 * ROC;
+	const STASH: u128 = 100 * ROC;
+
+	serde_json::json!({
+		"balances": {
+			"balances": endowed_accounts
+				.iter()
+				.map(|k: &AccountId| (k.clone(), ENDOWMENT))
+				.chain(initial_authorities.iter().map(|x| (x.0.clone(), STASH)))
+				.collect::<Vec<_>>(),
+		},
+		"session": {
+			"keys": initial_authorities
+				.iter()
+				.map(|x| {
+					(
+						x.0.clone(),
+						x.0.clone(),
+						rococo_session_keys(
+							x.2.clone(),
+							x.3.clone(),
+							x.4.clone(),
+							x.5.clone(),
+							x.6.clone(),
+							x.7.clone(),
+						),
+					)
+				})
+				.collect::<Vec<_>>(),
+		},
+		"babe": {
+			"epochConfig": Some(BABE_GENESIS_EPOCH_CONFIG),
+		},
+		"sudo": { "key": Some(endowed_accounts[0].clone()) },
+		"configuration": {
+			"config": default_parachains_host_configuration(),
+		},
+		"registrar": {
+			"nextFreeParaId": primitives::LOWEST_PUBLIC_ID,
+		},
+	})
+}
+
+//development
+fn rococo_development_config_genesis() -> serde_json::Value {
+	rococo_testnet_genesis(
+		Vec::from([get_authority_keys_from_seed("Alice")]),
+		get_account_id_from_seed::<sr25519::Public>("Alice"),
+		None,
+	)
+}
+
+//local_testnet
+fn rococo_local_testnet_genesis() -> serde_json::Value {
+	rococo_testnet_genesis(
+		Vec::from([get_authority_keys_from_seed("Alice"), get_authority_keys_from_seed("Bob")]),
+		get_account_id_from_seed::<sr25519::Public>("Alice"),
+		None,
+	)
+}
+
+/// Provides the JSON representation of predefined genesis config for given `id`.
+pub fn get_preset(id: sp_std::vec::Vec<u8>) -> Option<sp_std::vec::Vec<u8>> {
+	let patch = match id {
+		s if s == "local_testnet".as_bytes() => rococo_local_testnet_genesis(),
+		s if s == "development".as_bytes() => rococo_development_config_genesis(),
+		s if s == "staging_testnet".as_bytes() => rococo_staging_testnet_config_genesis(),
+		_ => return None,
+	};
+	Some(
+		serde_json::to_string(&patch)
+			.expect("serialization to json is expected to work. qed.")
+			.into_bytes(),
+	)
+}
diff --git a/polkadot/runtime/rococo/src/lib.rs b/polkadot/runtime/rococo/src/lib.rs
index 11c1cdaaed9..f13144a5acb 100644
--- a/polkadot/runtime/rococo/src/lib.rs
+++ b/polkadot/runtime/rococo/src/lib.rs
@@ -39,9 +39,6 @@ use runtime_common::{
 	paras_registrar, paras_sudo_wrapper, prod_or_fast, slots, BlockHashCount, BlockLength,
 	SlowAdjustingFeeUpdate,
 };
-use scale_info::TypeInfo;
-use sp_std::{cmp::Ordering, collections::btree_map::BTreeMap, prelude::*};
-
 use runtime_parachains::{
 	assigner as parachains_assigner, assigner_on_demand as parachains_assigner_on_demand,
 	assigner_parachains as parachains_assigner_parachains,
@@ -57,6 +54,9 @@ use runtime_parachains::{
 	scheduler as parachains_scheduler, session_info as parachains_session_info,
 	shared as parachains_shared,
 };
+use scale_info::TypeInfo;
+use sp_runtime::RuntimeString;
+use sp_std::{cmp::Ordering, collections::btree_map::BTreeMap, prelude::*};
 
 use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
 use beefy_primitives::{
@@ -128,6 +128,7 @@ use governance::{
 #[cfg(test)]
 mod tests;
 
+mod genesis_configs;
 mod validator_manager;
 
 impl_runtime_weights!(rococo_runtime_constants);
@@ -2398,6 +2399,22 @@ sp_api::impl_runtime_apis! {
 		fn build_state(config: Vec<u8>) -> sp_genesis_builder::Result {
 			build_state::<RuntimeGenesisConfig>(config)
 		}
+
+		fn get_preset(id: Option<Vec<u8>>) -> Option<Vec<u8>> {
+			if let Some(id) = id {
+				genesis_configs::get_preset(id)
+			} else {
+				Some(create_default_config::<RuntimeGenesisConfig>())
+			}
+		}
+
+		fn preset_names() -> Vec<sp_runtime::RuntimeString> {
+			vec![
+				RuntimeString::from("local_testnet"),
+				RuntimeString::from("development"),
+				RuntimeString::from("staging_testnet"),
+			]
+		}
 	}
 }
 
-- 
GitLab