extension

Quill - easy, fast, and low-cost Ethereum transactions

Overview

Interaction with web3 applications can be slow, costly, and risky. Quill leverages BLS signature aggregation on Ethereum layer 2 solutions, easily bringing fast and low-cost Ethereum transactions to your browser.

Additional Benefits

• send multiple txs as one to ensure atomic execution
• pay even less gas by reducing on chain footprint of signatures

How to use it

1. install the plugin
2. create a contract wallet (uses bls keys)
3. transfer L2 erc20 tokens
4. use contract wallet with L2 dapps (coming soon)

Getting started

To run the dev server:

yarn run dev:chrome # or dev:firefox etc, see scripts in package.json

Reset the extension. This is useful for getting the wallet to a clean slate in development. You can achieve this in your browser by either:

• Removing the extension and then re-adding via "Load unpacked".
• Or run debug.reset(); twice in the background page console.

Feature Summary

MVP (uses Optimism)

• Chrome/Brave plugin
• Secure storage of BLS private-keys
• Sign tx data:
  • wallet creation
  • erc20 transfers
• Submit txs to hosted aggregator
• Basic feedback from aggregator for UI updates (tx received, tx mined. tx dropped?)

Upcoming

• Secure storage of EDDSA and ECDSA keys
• Social recovery
  • nominate guardians
  • recover contract wallet
• Receive tx data from existing L2 dapps on networks:
  • Optimism
  • Arbitrum (coming soon)
  • ...
• Receive and review multiple txs from dapps
  • sign all and submit to aggregator
• Wallet feedback (from L2 sequencer)
  • listening to wallet events
  • wallet tx history

Future

• Sign and submit multiple transactions as one (to L2 sequencer)
  • local signature aggregation
• Review and sign typed data (712)

Requirements

Secure storage

• Safe storage options for extension

BLS components

• signing transactions
• signature verification
• signature aggregation

Servers

• Aggregator
• Future: L2 Sequencer

User Interface Base

• Extension for Chrome/Brave and Firefox
  • Web Extensions? combined extensions standard
• storyboard
• Common:
  • Network name (hover chainId)
  • Current BLS Key (option to create)
  • Associated contract wallet address if any (option to create)
  • contract wallet balance (L2 ETH token)
  • Action to Transfer (starts tx data)
• tx edit section:
  • Method name "transfer" (show methodId)
  • Params as text fields
    • address with checks (length, checksum)
    • balance as decimal (*10^18)
• signed tx section:
  • signed txs per row
    • method name - nonce - (send)
  • (aggregate) - (send all)