AlchemyProvider does not yet support Polygon Amoy Testnet

[tazous]

Describe the Feature

Following Georli deprecation and replacement by Sepolia, Polygon Mumbai testnet will follow the same path and be replaced by Polygon Amoy test.

As announced by Alchemy, they released last week their Amoy provider and will stop support for Mumbai before the 17th of April.

As seen here https://docs.ethers.org/v6/api/providers/thirdparty/#AlchemyProvider, ethers AlchemyProvider does not yet support Amoy network. Is there a plan to upgrade the library in order to migrate smoothly? That would be perfect and a great help from you.

Code Example

No response

[bearsworth]

Please support this ethers. It is direly needed for some of us who are testing.

[link271]

I'm using StaticJsonRpcProvider with Alchemy url and it's working but it would be great if ethers adds support for amoy to AlchemyProvider and InfuraProvider.

[aboveStars]

Temporarily, "HTTPS URL" can be used with JsonRpcProvider in v6 like this:

const provider = new ethers.JsonRpcProvider("https://polygon-amoy.g.alchemy.com/v2/********");

[Sufiyan-dev]

amoy is still not supported it says

hardhat-verify found one or more errors during the verification process:

Etherscan:
Must be authenticated!

[Sufiyan-dev]

when using infura key it does work

[bearsworth]

Temporarily, "HTTPS URL" can be used with JsonRpcProvider in v6 like this:

const provider = new ethers.JsonRpcProvider("https://polygon-amoy.g.alchemy.com/v2/********");

Yeah this works, the reason is that for a specific use case, we have multiple endpoints. The URL one is easier for future proofing, but then it means every time there is a change we have to go back and change all the endpoints again to the URL scheme. I did upvote this though because this is the right answer for getting something working.

[ricmoo]

I’ve added it to the ethers default key last week for Infura and the network is available in the latest GitHub version.

It is possible that Etherscan doesn’t permit access to it without getting your own key?

I’ll be publishing to npm tomorrow.

[bearsworth]

I’ve added it to the ethers default key last week for Infura and the network is available in the latest GitHub version.

It is possible that Etherscan doesn’t permit access to it without getting your own key?

I’ll be publishing to npm tomorrow.

Thank you ricmoo! Appreciate all the work.

[ricmoo]

Added in v6.12.0. Let me know if there are any more issues or once additional providers have added the network.

Thanks! :)

[nativenolde]

Hi @ricmoo,

thanks a lot for introducing support of the amoy testnet!

would you please also support it with the EtherScan/PolygonScan provider?

ethers.js/lib.commonjs/providers/provider-etherscan.js

Line 104 in b553b1b

getBaseUrl() {

Thanks a lot for your effort!

[nativenolde]

Added Polygon Amoy Testnet Support for EtherScan #4711

[ricmoo]

Last time I looked there wasn’t an Etherscan Amoy endpoint, but if there is now, I can certainly add it. :)

[nativenolde]

@ricmoo In the meantime, they have documented the support for the Amoy testnet... i've added the url to the EtherScan provider with #4711... however, i am not sure if this is sufficent.