Certus One has released Wormhole, a bidirectional bridge ERC-20 and SPL Token bridge between Ethereum and Solana.
Surprisingly, the project doesn’t use any moon math and is a very simplistic implementation, details below.The use of Guardians to certify token lockups and burns on one chain in order to mint them on another chain. Wormhole is a proof-of-authority network, not a proof-of-stake network. This means the guardians are selected by Solana/Serum. Wormhole states it is leaderless, in that if all guardians observe the same event, then it is automatically considered valid. All guardians have equal weight since it is a PoA network. The project uses an M/N multisig scheme, no crazy cryptography. Consensus is established through a gossip network. Once a Validator Action Approval or VAA is observed, if ⅔’s of guardians observed it is is considered automatically valid. Also once a VAA has been signed by a sufficient number of nodes, it is posted to Solana for da