This repository contains a list of Ceramic nodes that can be used as a bootstrap mechanism for peer discovery on the Ceramic Network. When you start up a new Ceramic node it will automatically query this repository to discover available peers and connect to them.

⚠️ If you are running a Ceramic node, you must add your node to this list. If your node is not on this list, other nodes on the network will be unable to read Ceramic streams or receive commits created on your node.

Submit a pull request to this repository adding the multiaddress of the IPFS node that your Ceramic node uses to the correct peerlist file. Peerlist files are organized by name of the Ceramic network. Currently, there are three peerlists:

• mainnet.json: A list of nodes that run the mainnet Ceramic network
• testnet-clay.json: A list of nodes that run the testnet-clay Ceramic network
• dev-unstable.json: A list of nodes that run the dev-unstable Ceramic network

It is recommended to first run your node on the Clay testnet to ensure it is set up correctly before running mainnet.

When you start the Ceramic daemon you will get an output that looks something like this:

$ ceramic daemon
# ...
Swarm listening on /ip4/127.0.0.1/tcp/4002/p2p/QmNZfs1Vevknvmykz3fWKTjhmEpckabhd2JyEGJuymZFsC
Swarm listening on /ip4/192.168.188.22/tcp/4002/p2p/QmNZfs1Vevknvmykz3fWKTjhmEpckabhd2JyEGJuymZFsC
Swarm listening on /ip4/10.70.198.64/tcp/4002/p2p/QmNZfs1Vevknvmykz3fWKTjhmEpckabhd2JyEGJuymZFsC
Swarm listening on /ip4/127.0.0.1/tcp/4003/ws/p2p/QmNZfs1Vevknvmykz3fWKTjhmEpckabhd2JyEGJuymZFsC

This is your IPFS multiaddress. It can also be viewed in the config file that the IPFS daemon creates which is located by default in a directory called ipfs. This directory gets created wherever IPFS runs. Of you are running IPFS out-of-process, you will see a similar log output on startup and you can simply get the multiaddress from there.

It is recommended that you use a websocket multiaddress and configure SSL (e.g. .../<port>/wss/p2p/<peerId>). Before adding your multiaddress to the peerlist, be sure to replace the local IP addresses (e.g. 127.0.0.1) with your external IP address or DNS name. Also ensure that the websocket port (4003 in the example above) is open to internet connections. For more information see multiaddress docs.

When a pull request is submitted, it triggers a connectivity test to make sure your node is successfully connected to the network. If this fails, the 3Box Labs team will reach out to you to triage the issue. Make sure there are no firewalls blocking your instance and that your port is properly exposed.

Once you are on the peerlist, you should monitor your IPFS node and alert our team on Discord in the case of any planned or unexpected downtime. Please make your best effort to come back online within 24 hours. If we can not connect to your IPFS node for over 24 hours, we will remove it from the peerlist and you can resubmit your multiaddress in a new PR once your node becomes stable again. If the connectivity test in your PR to the peerlist fails and it is due to a node other than your own, we will update the peerlist and re-run the tests for you.

Before submitting a PR, ensure that your setup has the following:

• Swarm port for IPFS node is open to the internet so that peers can make connections to your node
• API port for IPFS node is reachable by the Ceramic node (True by default)
• HTTP API port for Ceramic daemon is open to requests from your client applications
• Ceramic daemon CORS allowed origins regex matches the origin of your client applications (True by default)
• Data persistence is set up so that your multiaddress will not change

If you are submitting a pull request for mainnet, you must write a summary in the notes of the PR that describes how you are ensuring data persistence of your (1) multiaddress, (2) Ceramic State Store, and (3) IPFS Repo, and includes the static IP address of the machine your Ceramic daemon runs on so it can connect to the 3Box Labs hosted Ceramic Anchor Service (CAS).

### Team:
<!--Team name or your github handle if you are a team of one-->
### Use case:
<!--A few words about what how your node will be used so we can make recommendations for your setup-->

### Overview:
<!--How are you running your nodes? What cloud infrastructure? Are you running IPFS out-of-process?-->

*Multiaddress persistence:*
<!--What are you doing to ensure your multiaddress won't change?-->

*Ceramic State Store persistence:*
<!--What are you doing to ensure your Ceramic data doesn't get lost?-->

*IPFS Repo persistence:*
<!--What are you doing to ensure your IPFS data doesn't get lost?-->

*Static IP:*
<!--Static IP address of the machine your Ceramic daemon runs on.-->

Data persistence is a critical step. Remember that there are no guarantees that other nodes in the network are keeping copies of your streams so you must pin all streams that you care about and back up their data.

If your nodes restart for any reason and you do not have data persistence in place, the following will occur: (1) Your IPFS config file will be regenerated with a new multiaddress and you will lose your connection to the rest of the network. (2) The state data for streams pinned on your node will get deleted and likely become unrecoverable. (3) The IPFS data for streams your node has loaded will get deleted and likely become unrecoverable, corrupting your stream state.

Instructions on configuring your node for proper data persistence can be found in the Ceramic docs on the Hosting a node page.

Please add one of the maintainers below as a reviewer for your PR. They will do their best to merge PRs as soon as they come in. If you need more immediate assistance, reach out on Discord and include the URL of your PR.

Peerlist is a temporary solution for peer discovery in Ceramic that will be used up until DAG-JOSE becomes available in go-ipfs. Peerlist is needed because the current JavaScript implementation of the DHT in libp2p (a p2p networking library used in Ceramic) is not yet sufficient to deliver optimal performance for a live decentralized network.

• Val (@v-stickykeys)

Ceramic is fully open source and dual-licensed under MIT and Apache 2.