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+## Spawn new parachain
+
+This guide describes starting a new parachain from scratch in an environment where you control your own relay chain.
+
+### Caladan chain spec
+
+In [ownership node](../ownership-chain/) there is a chain [spec](../ownership-chain/specs/caladan-spec.json) that defines the genesis of the chain. This chain spec was generated from the latest binary of the Ownership parachain.
+
+It currently contains some keys and values that are from the development environment. For example, `Aura`, `Session` pallets are using `Alice` accounts.
+
+Generate new key for your node, any mnemonic seed would work. You can use [subkey tool](https://docs.substrate.io/reference/command-line-tools/subkey/) to generate a new key.
+
+```bash
+> subkey generate
+Secret phrase `budget detail feel rebel trash visit appear royal erode two tent catch` is account:
+  Secret seed:       0xcb99c315d136e1f5d051c1d151731eac6f9e9a79ec2c4293abde7c4de856b9ae
+  Public key (hex):  0x035bedaef6290169b23e66bcef33d27bcd9e91b07d443e517842c7245b5735faf0
+  Public key (SS58): KWAnqxtpneH94rTf2prSKPYyf531enezcj6z9VpE2Rmt1aL1e
+  Account ID:        0x6997754397fc72ce678d3a32ab4e378b64b03bd5c39ee747cce2502b4d5ce2a6
+  SS58 Address:      5ET9sr9q7TEAj6srZyRbe8jqi8kek5o6g7ynVpCAmgk7xkBB
+```
+
+Here, we will use `SS58 Address` as `AuraId` in the chain spec.
+
+Use `Polkadot.js` to get `AccountId20` from the above mnemonic seed.
+
+![AccountId20](https://github.com/freeverseio/laos/assets/137785454/c832f9ab-065a-4189-8754-fddb749d83ba)
+
+
+And now replace all mentions of the following `AccountId20` in the `caladan-spec.json` file `0xf24ff3a9cf04c71dbc94d0b566f7a27b94566cac` with the new `AccountId20` that you generated.
+
+The resulting json would look like this, if we used the account generated above.
+
+```json
+      "collatorSelection": {
+        "invulnerables": ["0x2F59d178522380955F3b9EA1204F4fB242432Ef4"],
+        "candidacyBond": 16000000000,
+        "desiredCandidates": 0
+      },
+      "session": {
+        "keys": [
+          [
+            "0x2F59d178522380955F3b9EA1204F4fB242432Ef4",
+            "0x2F59d178522380955F3b9EA1204F4fB242432Ef4",
+            {
+              "aura": "5ET9sr9q7TEAj6srZyRbe8jqi8kek5o6g7ynVpCAmgk7xkBB"
+            }
+          ]
+        ]
+      },
+```
+
+#### Convert chain spec to raw format
+
+```bash
+./target/release/laos-ownership build-spec --chain=specs/caladan-spec.json --raw --disable-default-bootnode > specs/caladan-raw.json
+```
+
+### Prepare genesis artifacts
+
+IMPORTANT: Make sure to use `--chain` flag and point to the `caladan-raw.json` file that you generated in the previous step.
+
+#### Generate genesis state
+
+```bash
+./target/release/laos-ownership export-genesis-state --chain=specs/caladan-raw.json > genesis-state
+```
+
+#### Extract genesis wasm
+
+```bash
+./target/release/laos-ownership export-genesis-wasm --chain=specs/caladan-raw.json > genesis-wasm
+```
+
+### Start the parachain
+
+```bash
+./target/release/laos-ownership --chain specs/caladan-raw.json --rpc-port 9999 --base-path test-chain --unsafe-rpc-external -- --chain specs/rococo-freeverse-chainspec.json
+```
+
+This will start the new parachain but it won't produce blocks yet. You will first need to register the parachain on the relay chain and insert your Aura keys.
+
+### Insert Aura keys
+
+Once the parachain is started, you will need to insert the Aura keys. You can do this by connecting to the parachain in `Polkadot.js` and in the `RPC` tab.
+
+![Insert aura keys](https://github.com/freeverseio/laos/assets/137785454/b029ddbd-217c-4d9e-95bf-f963ef0b95aa)
+
+## Register parachain on relay chain
+
+There are two ways to register a parachain on the relay chain. Both require you to dispatch sudo extrinsic.
+
+### 1.Register as parathread and upgrade to parachain
+
+This creates a `para_id`. Since the parachain above uses `para_id: 2001`, we need to generate `ParaId` twice to get the `2001` id of the parachain.
+
+![Reserve ParaId](https://github.com/freeverseio/laos/assets/137785454/fe4cd39c-d50d-495e-84e7-83dca1a28f34)
+
+After this, you need to create the parathread:
+
+![Create parathread](https://github.com/freeverseio/laos/assets/137785454/e2ef14a0-59a2-445b-b3e9-22b848043ba5)
+
+Once this extrinsic is included in a block, you will see that parathread is onboarding.
+
+And when the parathread is onboarded, you will need to dispatch this sudo call with the genesis artifacts that you generated above:
+
+![Schedule upgrade](https://github.com/freeverseio/laos/assets/137785454/bc5ca670-29d4-451f-b9d8-2ce72196a432)
+
+### 2. Use `paraSudoWrapper.sudoScheduleParaInitialize` to register parachain
+
+This one is more straightforward and you only need one sudo extrinsic to register the parachain.
+
+![SudoScheduleParaInitialize](https://github.com/freeverseio/laos/assets/137785454/52814c9e-4754-4ef3-8084-1c667a381a54)