Rinkeby deprecation

Though Cloudflare’s Ethereum Gateway launched with support for the Rinkeby testnet, Rinkeby did not run through The Merge ↗ and - as a result - will no longer be a reliable staging environment for mainnet.

Cloudflare will be deprecating support for Rinkeby on January 30, 2023.

Migration

To avoid any issues with your Web3 development or debugging, you should switch over to the Sepolia testnet, which is fully supported with your Ethereum Gateway.

To migrate, you should update the endpoints you use when reading from or writing to the Ethereum network.

For example, you might have been using the previous endpoints to interact with your Ethereum Gateway.

Previous curl

curl https://web3-trial.cloudflare-eth.com/v1/rinkeby \
--header 'Content-Type: application/json' \
--data '{
  "jsonrpc": "2.0",
  "method": "eth_getBlockByNumber",
  "params": ["0x2244", true],
  "id": 1
}'

Previous JS Fetch API

await fetch(
  new Request('https://web3-trial.cloudflare-eth.com/v1/rinkeby', {
    method: 'POST',
    body: JSON.stringify({
      jsonrpc: '2.0',
      method: 'eth_getBlockByNumber',
      params: ['0x2244', true],
      id: 1,
    }),
    headers: {
      'Content-Type': 'application/json',
    },
  })
).then(resp => {
  return resp.json();
});

To migrate away from Rinkeby, change the end of your endpoint to use another testnet.

New curl

curl https://web3-trial.cloudflare-eth.com/v1/sepolia \
--header 'Content-Type: application/json' \
--data '{
  "jsonrpc": "2.0",
  "method": "eth_getBlockByNumber",
  "params": ["0x2244", true],
  "id": 1
}'

New JS Fetch API

await fetch(
  new Request('https://web3-trial.cloudflare-eth.com/v1/sepolia', {
    method: 'POST',
    body: JSON.stringify({
      jsonrpc: '2.0',
      method: 'eth_getBlockByNumber',
      params: ['0x2244', true],
      id: 1,
    }),
    headers: {
      'Content-Type': 'application/json',
    },
  })
).then(resp => {
  return resp.json();
});