[Feat] ETH Bridge - Gravity (prev. Peggy)

[jim380]

Summary

1. Bring CertikShield and other security focused products CertiK offers to Ethereum
2. Bring ETH and ERC-20 tokens on Ethereum to the CertiK chain, and vice versa

Architecture Overview

⚠️ [WIP] Proceed with caution ⚠️

Compatibility with BSC

1. Take some tokens on the BSC and send them to Ethereum
2. Send the tokens from Ethereum to the Cosmos chain

Readiness

Governance proposal later this year

Quick Bites

• Peggy is now Gravity, and the pegzone concept has been left behind

• Same security guarantee as the Cosmos Hub (billions of dollars of staked ATOMs)

• ATOM and every other asset in Cosmos ecosystem can be traded on Uniswap and other DeFi products on Ethereum

• IBC vs Bridges

  • IBC is designed to connect heterogeneous blockchains. For the IBC module to work, it has to be accompanied with customized bridge modules like Peggy
  • IBC could potentially work with probabilistic chains like Ethereum but it's not a feature on the current research roadmap
  • Peggy enables IBC chains to allow funds to be moved from Ethereum to any other cosmos chain connected to a chain running Peggy via IBC. Ethereum 1.0 itself isn't capable of supporting IBC

• A bridge Operator has to maintain 3 processes:

  • Validator
  • Eth Full Node (or a light client peered with shared full nodes)
  • Eth Signer

  They might possibly want to run the Relayers also, which submit batched txs and pay the gas

• A validator for the Gravity bridge is identical to a validator for the cosmos chain that has the bridge deployed. If you are already a validator in a cosmos chain, having a Gravity bridge in that chain only adds workload to your existing ones

Deploy

$ git clone https://github.com/althea-net/peggy
$ cd solidity
$ npm install
$ npm run typechain
$ npx ts-node \
$ contract-deployer.ts \
$ --cosmos-node="http://localhost:26657" \
$ --eth-node="http://localhost:8545" \
$ --eth-privkey="<needs some eth to pay for the deploy>" \
$ --contract=artifacts/Peggy.json \

Learn More

• althea-net/cosmos-gravity-bridge

• Gas Estimates

• TestNet #1 agenda

• Aneka - Block Explorer