Avalanche Warp Messaging (AWM) is rolling out in AvalancheGo Banff 5, bringing fast, reliable native communications to all Avalanche Subnets
Soon, this capability will be rolled out to the subnet-evm, giving Subnet creators native, cross-chain communication capabilities out-of-the-box.
The next major ask for Subnets was native communication. Projects that wanted to transfer assets or data between Subnets had to deploy and manage their own bridges. This all ends today with the launch of Avalanche Warp Messaging (AWM) in Banff 5. Subnets will never be the same.
AWM enables Subnet Validators to collectively produce a BLS Multi-Signature that attests to the validity of an arbitrary message
that can be verified by any other Subnet.
Because all Subnet Validators must validate the Primary Network via the P-Chain, they can access the stake weights and registered BLS public keys of any other Subnet at any time.
This means that Subnets communicating with each other don’t need to periodically send each other information about changes in their respective validator sets to continue verifying messages, making any-to-any messaging practical
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