add support for educhain

[aeither]

Description

Add support for EDUCHAIN

https://educhain.xyz/

Tests

Checklist

• [x] I have formatted and linted my code
• [x] All new and existing tests pass
• [x] My commits are signed (required for merge) -- you may need to rebase if you initially pushed unsigned commits

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[vercel[bot]]

@aeither is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[aeither]

0x836d275563bAb5E93Fd6Ca62a95dB7065Da94342 is a proxy clone implementing 0x4bce17B535d5C1C84E8112Feff37720986dbd660, which does not seem to be an EIP-3009 token, and thus is incompatible with the evm mechanism implemented in v1

If you can swap that address for any stablecoin which is EIP-3009 compliant, I am happy to merge!

I replaced Arb usdc to 0x12a272A581feE5577A5dFa371afEB4b2F3a8C2F8 which is a stargate bridged USDC this one is implementing 0x0cEb237E109eE22374a567c6b09F373C73FA4cBb which has transferWithAuthorization and receiveWithAuthorization

[aeither]

Thank you for switching tokens @aeither, this looks good!

Final nit is the usdcName property. This refers to the name in the deployed contract, as it's part of the EIP-712 domain info required for signing.

I notice the contract's name is actually Bridged USDC (Stargate)

Please update the usdcName, resolve the merge conflict, and then ping me! It should be good to merge then :)

merge conflict should be fixed, and updated name to Bridged USDC (Stargate)