GitHub - microsponsors/test-contract-relay: Proof-of-Concept relay smart contract for Microsponsors federation

Test Contract: Federation Relay Bridge

This is a small proof-of-concept that will help Microsponsors federate and/or upgrade its own Registry smart contract in the future.

The basic concepts:

Each Microsponsors Federation member will have its own Registry contract that implements its own authorization rules (as well as its own account registration data).
Transfer restrictions are currently implemented on the Microsponsors ERC-721 contract by pointing directly at the (only) public Microsponsors registry() address for authorization checks (it contains a DeployedRegistry ABI to help it query the Registry).
To federate, we can simply deploy the contract in this repo and point the ERC-721 public registry() setting to it via updateRegistryAddress(). This contract resolves each federationId to the corresponding Registry address mapped for that member.
To add each new member to the Federation, the Microsponsors admin calls update(<federationId>, <newAddress>) on this contract.
NOTE: The original Microsponsors registry should always be set to federationId=1 1 so the ERC-721 tokens minted up to this point will resolve to the correct (original) registry!

Details about how to implement a Registry of your own to integrate with our Federation can be found in the Registry repo: https://github.com/microsponsors/registry-contract#path-to-federation

Run ganache-cli: $ ganache-cli -p 8545 In another terminal:

$ rm -rf build && truffle migrate --reset --compile-all

This stack seems to be sensitive to versioning, so capturing details here:

$ truffle console --network development
> Relay.deployed().then(inst => { r = inst})
> r.update(1, <address>)