Technical Update 20

Fantom has continued to develop additional functionality and security to the network; for example, by extending our work to make Lachesis ABCI-compatible. This will allow Lachesis to have Tendermint-like functionality with the ability to plug into different services, thereby offering Lachesis as Consensus-as-a-service.

Go-Lachesis

• Upgraded nodes in public testnet to v0.6.0-rc.2.
• Expanded app.blockContext to call App.DeliverTxs() on each transaction separately: https://github.com/Fantom-foundation/go-lachesis/pull/456
• Removed the dependency of evmcore.NewStateProcessor() on stateReader from gossip: https://github.com/Fantom-foundation/go-lachesis/pull/470
• Completed the first stage of performance tweaking in preparation of launching a test environment to measure performance. The test environment will consist of the following modifications:

R1: Users can submit transactions into any node’s transaction pool.
R2: A node can pick txns from its own pool and generate new event block.
R3: A node can send its own event block to any peer node of the network.
R4: Removed the restrictions of event emission rate.
R7: Disabled the fork mechanics.
R9: Removed free gas parents (we won’t need gas and fees in a testing environment, as we are measuring tx performance).

All changes are merged to develop — https://github.com/Fantom-foundation/lachesis-ex/tree/develop.

• Implemented logic to check the node for latest Lachesis version: https://github.com/Fantom-foundation/go-lachesis/pull/471
• Improved test coverage to 82.5% for go-lachesis/ethapi package: https://github.com/Fantom-foundation/go-lachesis/pull/455
• Created new Private txpool:

Added new functionality to the existing evmcore. TxPool is a sheet, which has marks that this transaction is private. We need to not send marked transactions to gossip.ProtocolManager

Duplicated all methods of sending transactions by methods with the addition of this mark (ethapi and the console)

Make sure that emitter receives private transactions without timeout

https://github.com/Fantom-foundation/go-lachesis/pull/472

• Upgraded the public testnet (with 3 nodes) to v0.6.0-rc2 from v0.6.0-rc1, and upgraded the SFC as well

New Fantom Wallet

Our new official Fantom Wallet, which we’re building as a Progressive Web Application (PWA), is nearing completion. It will have built-in Ledger support. The application with be downloadable as a desktop or mobile wallet, and will also be available as a web wallet.

The repositories related to the PWA wallet are:

1. fantom-api-graphql: https://github.com/Fantom-foundation/fantom-api-graphql
2. Fantom_LedgerJS: https://github.com/Fantom-foundation/Fantom_LedgerJS
3. fantom-metamask: https://github.com/Fantom-foundation/fantom-metamask
4. fantom-ui: https://github.com/Fantom-foundation/fantom-ui

• Removed dependency on Web3js provider and default connection to Val1 full node, which should remove a bottleneck causing wallets to lag in times of high load: https://github.com/Fantom-foundation/fantom-metamask/commit/bc990d1ae9b143f710ec0c351f9b43ec09372e9
• Created new UI connected to Metamask and GraphQL, with commits such as the following:

Create FCopyButton component · Fantom-foundation/fantom-metamask@d13cc2c

Create transaction list in dashboard view · Fantom-foundation/fantom-metamask@b419a24

Add support for downloading keystore from account detail ·…

Create send transaction process (WIP) · Fantom-foundation/fantom-metamask@d5db9e1

Update balance of accounts in account list view · Fantom-foundation/fantom-metamask@37d262f

Create steps counter in heading of restoring wallet and creating wallet ·…

• Modified GraphQL API to be compatible with new PWA wallet:

Return empty transaction list on new account. · Fantom-foundation/fantom-api-graphql@4b72a98

Add raw transaction submit endpoint to the API. · Fantom-foundation/fantom-api-graphql@789be22

Add current gas price resolver to API server. · Fantom-foundation/fantom-api-graphql@a957028

• Completed Ledger App development. Currently in the process of connecting it to the PWA wallet.

Research

• Produced technical research paper on implementing governance contract as the owner of SFC, where Fantom token holders and validators can vote on changes to the SFC (details to be made public in time)
• Began development of general principals related to governance voting: https://github.com/devintegral4/fantom-sfc/tree/governance
• Published paper on arXiv “OV: Validity-based Optimistic Smart Contracts”; describes a programming language that may allow for the execution of smart contracts with increased speed and security: https://arxiv.org/abs/2004.04338

Official Links for Fantom

Official Email Address: contact@fantom.foundation

Official Website Link: https://www.fantom.foundation

Official Discord Discussion Group: https://discord.gg/6V42Gs8

Official Telegram Announcements Channel: https://t.me/fantomfoundation

Official Subreddit: https://www.reddit.com/r/FantomFoundation/

Official Twitter: https://twitter.com/FantomFDN

Official Medium: https://medium.com/fantomfoundation

Official Github: https://github.com/Fantom-foundation

Official YouTube Channel: https://www.youtube.com/c/fantomfoundation