Questions tagged [rococo]

Questions about the Rococo test network.

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I was trying to deploy my contract on rococo testnest and I was experiencing some problem

I was having this error when I was trying to deploy my ink smart contract in rococo: StorageDepositLimitExhausted More storage was created than allowed by the storage deposit limit. What might be the ...
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23 views

How to fix slow parachain block time on rococo-local?

Hello valuable Substrate community, I started two rococo-local relaychain validators and one custom parachain. The target block time of the parachain is 12 seconds, but the actual block time is 24 ...
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2 votes
1 answer
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Solochain to Parachain Block Production Problem - "Discarding slot xxx, block production took too long"

The following is a current issue when migrating from a Solochain to a Parachain (presently as a test on the Rococo relay chain): On the Rococo chain, we are unable to produce new blocks - it is ...
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1 vote
1 answer
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"Contracts on Rococo" down?

gm, tried setting up my boilerplate https://inkathon.xyz with contracts on rococo as suggested in the docs: https://use.ink/testnet. unfortunately, neither i'm able to receive funds from the faucet (...
1 vote
0 answers
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Dali parachain is not in Rococo anymore?

I’m working on an SDK for XCM and I made some examples using Rockmine and Dali. I noticed today the Dali rpc isn't working and isn’t in parachains list in Rococo. I tried to transfer ROC from Rockmine ...
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50 views

revert option is not working

We are facing a returning "Too many sibling blocks inserted" error then all 4 collator nodes would stop block production. I did some research into the issue and one of the possible solution ...
2 votes
1 answer
33 views

How to launch substrate chain on server?

Currently i am running my Parachain on rococo-local and it is working as expected. Now i need to host my parachain on server so that my app can use it. Is there any guide/process how can i do it?
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Is there any documentation/tutorial for bidding process?

We are planning to integrate our parachain on Polkadot. We do not want to go for crowd loan and want to apply for direct bidding. Is there any tutorial/guidelines? Would it be possible to test bidding ...
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2 answers
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Should we generate chain spec only on corresponding servers?

This might be a weird question. We are preparing our parachain for Polkadot. We have deployed our parachain on testnet, which we have connected with Rococo. We have generated chain specs for testnet ...
  • 105
1 vote
3 answers
48 views

What should be ideal hardware specifications for a Parachain?

We are working on a parachain and planning to integrate with Polkadot relay chain. When we deployed our parachain on testnet and tried to integrate with Rococo, we realised that less than 500 GB and 8 ...
  • 105
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1 answer
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Getting canonicalize elem error on Rococo fork [closed]

We are getting the error message below on Astar's custom relay chain, forked from Rococo, runtime is rococo/9310. Could not canonicalize elem at pos 1549631 using key [12, 109, 109, 114, 63, 165, 23, ...
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Problem in syncing with Rococo: Getting Database Block import error [duplicate]

I have been trying to connect my parachain with rococo. Initially it works fine after starting the node but after few hours, it stops syncing and gives below error 2022-12-17 15:29:54 [Relaychain] ...
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1 vote
1 answer
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How to get DB snapshot for Rococo

Polkadot and Kusama snapshots are available here https://polkashots.io/ but I couldn't find for Rococo. Can somebody please guide me to find DB snapshot for Rococo?
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1 answer
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whats the difference between the two different sovereign account addresses?

There are different sovereign account addresses here, what are the differences?
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1 answer
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FailedToTransactAsset when trying to establish HRMP when using XCM

Getting error: FailedToTransactAsset Sender: 2113 Receiver: 2000 Sovereign account of 2113: 5Dt6dpkWPwLaH4BBCKJwjiWrFVAGyYk3tLUabvyn4v7KtESG (contains ~5 ROC) This is the call made to make the HRMP ...
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1 vote
1 answer
28 views

Is the Westend deployment process same as Rococo?

Rococo is testnet for Kusama and Westend is testnet for Polkadot. To prepare parachain for Kusama, we have to test our application on Rococo. Likewise, we should test our parachain on Westend before ...
  • 105
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0 answers
17 views

Having both long term and short term slots on Rococo

Is it possible to have both a long term slot and also a short term slot on the Rococo test relay chain? We currently have a long term slot but would like the possibility of having a short term slot ...
6 votes
1 answer
319 views

How to open HRMP channels between parachains?

I can see that many parachains have opened HRMP channels on Rococo and are beginning to experiment with XCM: Source: https://dotsama-channels.vercel.app I would like to open HRMP channels between ...
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1 answer
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Rococo Parathread / Parachain -> Slot Rotation still working?

i am proud owner of a rococo Parathread with the ID 3025 - once there was the slot rotation and from time to time ( 3 days interval ) the parathread became a parachain. I am wondering if there is a ...
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1 answer
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Rococo reset schedule

I apologize for the vague intro in advance :) Some time ago, I was told by someone or read somewhere that Rococo testnet will reset every so often. By this I mean a complete DB wipe, starting from ...
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1 answer
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When there is a new Chain Spec version how do we know where to add things?

We're updating our relay chain test and its time to create a chain spec. When i generate a plain chain spec (from polkadot repo) it seems i still get some raw output: ./target/release/polkadot build-...
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2 votes
1 answer
60 views

Can you register parachains with custom code on Rococo?

I can see this phrase, while I am building 3 parachains on rococo testnet. Are there any ways to use the different runtime codes customized for each parachain?
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2 votes
1 answer
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Finality 502 blocks behind production on our relay testnet

After fixing stalled finality which was due to 5 of 13 valdidators broken, finality is now 502 blocks behind, but it is not catching up to production. We get this error: 2022-09-29 20:13:03 Safeguard ...
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5 votes
2 answers
163 views

Barrier error during initiating HRMP channel with Rockmine on Rococo

I want to open HRMP channel with Rockmine on rococo. But I got the Barrier error and can't understand what is wrong with my request. This is my encoded call data ...
1 vote
1 answer
35 views

Migrating from short-term to long-term slot on Rococo

We had a temporary slot with para_id 3026 previously and wanted to request for long-term slot (now that we have launched on Kusama) with the matching 2119. We thought the procedure is to: generate ...
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2 votes
2 answers
57 views

Polkadot vs Rococo runtimes

I noticed various projects having multiple runtimes for Kusama, Polkadot and maybe a local-testnet. This makes sense as they can have different set of features. In my case I only want to test on ...
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What are some common reasons that a blockchain stops producing blocks? [duplicate]

I am trying to familiarize myself with common reasons why a parachain could stop producing blocks. What some common reasons that a parachain stops producing blocks?
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1 answer
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Do I need the chain specification file of Rococco testnet to run my local parachain node?

I followed Connect a local parachain tutorial and successfully run my local parachain node with this command: ./target/release/parachain-collator \ --alice \ --collator \ --force-authoring \ --chain ...
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1 answer
109 views

How to start a Parachain on Rococo Testnet

I would like have a step by step process to get block production started with a parachain on Rococo testnet.
2 votes
1 answer
137 views

Error with block built on XXX: Import failed: Unexpected epoch change

I'm trying to prepare a local parachain testnet. However, when I run two nodes at the same time, although the two nodes recognise each other no new blocks are added and I get this error: Error with ...
1 vote
2 answers
116 views

automating the launch of bootnodes

We want to automate the launch of our bootnodes for our parachain. We generated a spec file with an IP address as well as an identity that are repeatable. We used the --node-key to get a repeatable ...
0 votes
1 answer
29 views

Error requesting Rococo Parachain Slot

When I going to Request your parachain slot but every time I want to press sign transaction the button, it shows me this error system.ExtrinsicFailed BadOrigin . whats the problem ? how can i solve ...
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1 answer
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While running collator with our paraId having error

We were trying to run collator with our paraID registered on polkadot. We are able to connect with the same process on rococo test network. But while we are connecting with polkadot. It's throwing ...
0 votes
0 answers
33 views

GrandpaJustification signature verification is failing with Rococo

a couple of days ago I realized that the logic I used for verifying a GrandpaJustification was not working anymore on Rococo (on Polkadot it does). Specifically, the signature of all precommits is ...
1 vote
0 answers
36 views

On which public testnet can I deploy an ink! smart contract for testing [duplicate]

In the deprecated Canvas repo the Rococo Canvas testnet is mentioned, however, I can't find any working rpc url. I can't connect to the RPC linked there, so I'd assume it's deprecated as well. On ...
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1 vote
0 answers
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Has anyone made a barebones rococo relay chain?

I am curious if anyone made a rococo relay chain using node-template? Similar to this (https://github.com/buraktabn/relay-chain) but using rococo instead of kusama.
4 votes
2 answers
243 views

Sudo option is missing

I just clone the Polkadot repo v0.9.20 and build. When I run the chain sudo option is not showing in developer section. Running chain on 127.0.0.1:9944. Can anyone please tell why this thing happen? ...
1 vote
0 answers
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Rococo Status & Issues

lately Rococo has been producing blocks very slowly. Not sure if this is the best place to ask, but where can we find more information about this? Or where to ask about this if this isn't the correct ...
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0 votes
1 answer
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Possibility of Deploying Substrate Kitties to Testnet

I've just completed the Substrate Kitties tutorial. Since I've created my own chain in my own local environment, I was wondering if it's possible for me to deploy my Substrate Kitties chain on to the ...
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2 answers
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How do I access my parathread?

I have created a parathread on Rococo here, it is number 3020. It doesn't have a link or name to click to the right of it like the ones at the top do. Clicking those brings me to the page where I can ...
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3 votes
1 answer
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Wider Parachain Testing: Westend or Rococo?

I'm planning out next tier of testing a parachain after local testing. There is both Westend and Rococo testnets, but I'm not 100% sure what the differences are between the two of them. Which one (or ...
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3 votes
1 answer
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Is there a link or guide on how to get a Sovereign Account Address?

I'm currently working on opening an HRMP Channel on Rococo with another parachain. In order to do this, I need to send an XCM to the relay chain. One of the items within this message requires a ...
4 votes
1 answer
119 views

Database corruption on syncing parachain to rococo [closed]

Syncing parachain to rococo generates the following error: 2022-04-20 16:47:13 [Relaychain] DB corrupted: Corruption: Corrupted compressed block contents: Snappy. Repair will be triggered on next ...
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2 votes
1 answer
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Bootnodes for Rococo

After completing the cumulus tutorial, I'm trying to connect the parachain to Rococo. I have two questions Do we need to run our own validator nodes for Rococo? (my understanding is that its not ...
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2 answers
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Parachain config for Rococo public test network

How to config a locally tested parachain to connect it to the Rococo public test-network? I mean on the startup phase (before the Rococo Slot Request Form), following the Cumulus tutorial: after ...
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1 vote
1 answer
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How to test parachain + Slot Auction + Crowdloan in Rococo chain?

My parachain's unit tests can run no problem. I am aware of "Rococo Slot Request" from https://docs.substrate.io/tutorials/v3/cumulus/rococo/#request-your-parachain-slot and in this section ...
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Do I need to bump the versions of a new release manually before making a runtime upgrade from a Polkadot release-v0.9.xx?

I am running a rococo fork and used Polkadot [release-v0.9.18][1] to make a runtime upgrade. I upgraded the chain initially, but didn’t see a difference in the chain. So then I realised I need to bump ...
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0 votes
1 answer
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Upgrade Rococo fork, error would exhaust block limits (no pallet_scheduler)

We're trying to upload a Rococo fork, it seems that Rococo doesn't have pallet_scheduler out the box, so we don't have that option. sudo.sudo 1010: Invalid transaction: Transaction would exhaust the ...
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2 votes
2 answers
38 views

Can we use same WASM and State files for registering parathread on Kusama, which we used for Rococo?

We generated WASM and State files to submit on Rococo. It went fine and we get successfully registered as parachain on Rococo. Can we use the same WASM and State files for registering parathread on ...
4 votes
1 answer
48 views

Provided next available para id is already registered

Background - I have relay chain setup that is able to connect to local rococo testnet, and I am trying to obtain and register unique para_id on Rococo testnet via the polkadotjs app. I have provided ...